Monitoring method, system and related device

Abstract

The invention discloses a monitoring method and system and a related device, which are applied to first electronic equipment, the first electronic equipment is provided with a first circuit, and the first circuit comprises a first electrode, a second electrode, a third electrode, a fourth electrode, an excitation current generation unit and a voltage measurement unit; receiving and responding to a first instruction, and determining that the first electrode and the second electrode are in good contact with skin through a first circuit; first information is determined through the first circuit, the first electrode makes contact with a first position of the user skin, the second electrode makes contact with a second position of the user skin, and the first position and the second position are located at the two ends of the thoracic cavity tissue respectively; and outputting first information, wherein the first information comprises one or more of the following items: cardiac output, stroke output, heart rate, ejection fraction and cardiac function judgment result. Therefore, the heart function condition of the user can be monitored in real time, and the user can conveniently monitor anytime and anywhere.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and in particular, to a monitoring method, system, and related devices. Background Art

[0002] With the continuous development of electronic technology, the connection between electronic devices and daily life has become increasingly close, and more and more electronic devices have health monitoring functions. Cardiac function monitoring is an important branch of health monitoring.

[0003] When cardiac function monitoring is required, a hospital can monitor a user's cardiac function through medical devices such as echocardiograms or impedance cardiodynamic monitors, and judge the user's cardiac function based on the monitoring results.

[0004] However, medical devices are not convenient for users to carry around, and it is impossible to obtain the results of cardiac function monitoring in real time using the above method. Summary of the Invention

[0005] This application provides a monitoring method, system, and related devices, which realizes real-time acquisition of the results of a user's cardiac function monitoring and facilitates the user to timely understand their own health status.

[0006] In a first aspect, this application provides a monitoring method, which is applied to a first electronic device. The first electronic device is provided with a first circuit, and the first circuit includes a first electrode, a second electrode, a third electrode, a fourth electrode, an excitation current generation unit, and a voltage measurement unit. The method includes: receiving a first instruction for instructing the first electronic device to start cardiac function monitoring; in response to the first instruction, determining that the first electrode is in good contact with the skin through a first loop, where the first loop includes the first electrode, the excitation current generation unit, and the third electrode; determining that the second electrode is in good contact with the skin through a second loop, where the second loop includes the second electrode, the excitation current generation unit, and the fourth electrode; determining first information through a third loop, where the third loop includes the first electrode, the excitation current generation unit, the voltage measurement unit, and the second electrode; the first electrode contacts a first position on the user's skin, and the second electrode contacts a second position on the user's skin, and the first position and the second position are respectively located at both ends of the thoracic tissue; outputting the first information, where the first information includes one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction, comprehensive result, first result, second result, third result, and fourth result, the comprehensive result is used to indicate whether the user's cardiac function is normal, the first result is used to indicate whether the cardiac output is normal, the second result is used to indicate whether the stroke volume is normal, the third result is used to indicate whether the heart rate is normal, and the fourth result is used to indicate whether the ejection fraction is normal.

[0007] The first circuit may be the monitoring circuit in any one of the following second aspects.

[0008] In this way, the first electronic device can obtain the user's heart function monitoring results in real time, facilitating the user to timely understand their own health status. Moreover, the first electronic device can also determine whether the electrodes are in good contact with the user's skin.

[0009] In one possible implementation, receiving the first instruction specifically includes: receiving the first instruction sent by the second electronic device; or, receiving the first operation of the user on the first electronic device and generating the first instruction.

[0010] In this way, the first electronic device can start heart function monitoring in response to the user's operation or in response to an instruction sent by another electronic device.

[0011] In one possible implementation, the method further includes: in response to the first instruction, outputting a first prompt, where the first prompt is used to prompt the user to start monitoring heart function.

[0012] In this way, the first electronic device can remind the user whether heart function monitoring is started through the first prompt.

[0013] In one possible implementation, before determining the first information through the third loop, the method further includes: determining that the user state is the first state; determining the first information through the third loop specifically includes: determining heart function indicators through the third loop, where the heart function indicators include any one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction; and determining the first information based on the first state and the heart function indicators.

[0014] In this way, the first electronic device can obtain the user state in real time and determine whether the user's heart function indicators are normal based on the user state.

[0015] In one possible implementation, the first state is a motion state, a resting state, or a sleeping state.

[0016] In another possible implementation, the first state may further include, but is not limited to, any one or more of the following: a startled state, a hypoxic state, a diving state, a meditation state, etc.

[0017] In one possible implementation, determining that the user state is the first state specifically includes: detecting that the user state is the first state; or, receiving and responding to the user's operation of setting the state and determining that the user state is the first state; or, receiving the second information sent by the second electronic device and determining that the user state is the first state based on the second information.

[0018] In this way, the first electronic device can determine the user state based on the user's operation of setting the state, and can also determine the user state based on the information sent by other electronic devices. The first electronic device can also detect the user state through devices such as sensors.

[0019] In a possible implementation, when the first state is a motion state, the first information further includes a first graph, and the first graph is used to indicate the relationship between the stroke volume and the exercise heart rate.

[0020] In this way, when the user is in a motion state, the first electronic device can output the first graph to prompt the user about the relationship between the stroke volume and the exercise heart rate.

[0021] In a possible implementation, outputting the first information specifically includes: sending a second instruction to a second electronic device, and the second instruction is used to instruct the first electronic device to output the first information.

[0022] In this way, the first electronic device can also output the first information through the second electronic device.

[0023] In a possible implementation, the first electronic device is an earphone, and the method further includes: before receiving the first instruction, the earphone plays a first audio; when receiving the first instruction, the playback of the first audio is paused.

[0024] In a possible implementation, the first electronic device is an earphone, and playing the first audio specifically includes: playing the first audio at a first volume; outputting the first information specifically includes: if the user wears the left earphone or the right earphone, playing the first information at the first volume.

[0025] In a possible implementation, the first electronic device is an earphone, and the method further includes: if the user does not wear the left earphone and does not wear the right earphone, playing the first information at a second volume, and the second volume is greater than the first volume.

[0026] In this way, when the first electronic device is an earphone, the first electronic device can determine the output volume of the first information based on whether the user wears the earphone.

[0027] In a possible implementation, the first electronic device is an earphone, and outputting the first information specifically includes: if the user does not wear the left earphone and does not wear the right earphone, sending a second instruction to a second electronic device, and the second instruction is used to instruct the first electronic device to output the first information.

[0028] In this way, when the first electronic device is an earphone, the first electronic device can determine whether to output the first information through the second electronic device based on whether the user wears the earphone.

[0029] In a possible implementation, the first electronic device is an earphone, and the earphone includes a left earphone and a right earphone. There is a wired connection between the left earphone and the right earphone, and a first electrode and a third electrode are provided on the left earphone, and a second electrode and a fourth electrode are provided on the right earphone.

[0030] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a watch band. The first electrode and the third electrode are located at one end of the watch band, and the second electrode and the fourth electrode are located at the other end of the watch band. The length of the watch band is greater than the first length.

[0031] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a watch band. The movement includes a first button and a second button. The first electrode and the third electrode are located on the back of the movement, the second electrode is located on the first button, and the fourth electrode is located on the second button.

[0032] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a watch band. The movement includes a first button and a second button. The first electrode and the third electrode are located on the watch band, the second electrode is located on the first button, and the fourth electrode is located on the second button.

[0033] In a possible implementation, the first electronic device is a mobile phone, which includes one or more buttons. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons, and the first electrode, the second electrode, the third electrode, and the fourth electrode do not contact each other.

[0034] In a possible implementation, one or more buttons of the mobile phone include a volume button and a fingerprint button. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons. Specifically, the first electrode and the third electrode are disposed on the volume button, and the second electrode and the fourth electrode are disposed on the fingerprint button.

[0035] In a possible implementation, one or more buttons of the mobile phone include a first volume button, a second volume button, and a fingerprint button. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons. Specifically, the first electrode is disposed on the first volume button, the third electrode is disposed on the second volume button, and the second electrode and the fourth electrode are disposed on the fingerprint button.

[0036] In this way, when the device form of the first electronic device is different, each electrode can be disposed at a different position.

[0037] In a second aspect, the present application provides a monitoring circuit, including: a first electrode, a second electrode, a third electrode, a fourth electrode, a first analog switch, a second analog switch, an excitation current generation unit, and a voltage measurement unit; the first analog switch includes a first port and a second port, and the second analog switch includes a third port and a fourth port; the first electrode is connected to the second electrode through the first port of the first analog switch, the excitation current generation unit, and the third port of the second analog switch; the third electrode is connected to the fourth electrode through the fourth port of the second analog switch, the excitation current generation unit, and the second port of the first analog switch; the voltage measurement unit is connected to the third electrode and the fourth electrode, or the voltage measurement unit is connected to the first electrode and the second electrode; when the first electrode contacts a first position of the user's skin, the second electrode contacts a second position of the user's skin, and the first position and the second position are respectively located at two ends of the thoracic tissue, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart.

[0038] In this way, the voltage across the user's heart and the current flowing through the user's heart can be obtained in real time through this monitoring circuit, so as to determine the user's cardiac impedance and obtain the monitoring result of the user's cardiac function.

[0039] In a possible implementation manner, the connection of the first electrode to the second electrode through the first port of the first analog switch, the excitation current generation unit, and the third port of the second analog switch specifically includes: the first electrode, the first analog switch, the excitation current generation unit, the second analog switch, and the second electrode are connected in sequence, and the first electrode is connected to the first port of the first analog switch, and the second electrode is connected to the third port of the second analog switch; the connection of the third electrode to the fourth electrode through the fourth port of the second analog switch, the excitation current generation unit, and the second port of the first analog switch specifically includes: the third electrode, the second analog switch, the excitation current generation unit, the first analog switch, and the fourth electrode are connected in sequence, and the third electrode is connected to the fourth port of the second analog switch, and the fourth electrode is connected to the second port of the first analog switch.

[0040] In a possible implementation manner, the excitation current generation unit is connected to the first analog switch and the second analog switch.

[0041] In a possible implementation manner, the first analog switch is configured to connect the first port or the second port; the second analog switch is configured to connect the third port or the fourth port.

[0042] It should be noted that the first analog switch and the second analog switch may also not connect any port.

[0043] In a possible implementation, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart. Specifically, when the first analog switch is connected to the first port and the second analog switch is connected to the third port, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart; or, when the first analog switch is connected to the second port and the second analog switch is connected to the fourth port, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart.

[0044] In a possible implementation, when the first analog switch is connected to the first port and the second analog switch is connected to the fourth port, the monitoring circuit is configured to determine whether the first electrode and the third electrode are in good contact with the skin.

[0045] In a possible implementation, when the first analog switch is connected to the second port and the second analog switch is connected to the third port, the monitoring circuit is configured to determine whether the second electrode and the fourth electrode are in good contact with the skin.

[0046] In a possible implementation, when the first analog switch is connected to the first port and the second analog switch is connected to the fourth port, or when the first analog switch is connected to the second port and the second analog switch is connected to the third port, the current frequency generated by the excitation current generation unit is less than the first frequency.

[0047] In a possible implementation, the current frequency generated by the excitation current generation unit is greater than the first frequency.

[0048] In a possible implementation, the first frequency may be 1 kilohertz (kHz).

[0049] In a third aspect, the present application provides an electronic device, which is a first electronic device. The first electronic device includes the circuit according to any one of the second aspect.

[0050] In a possible implementation, the first electronic device is an earphone. The earphone includes a left earphone and a right earphone. The left earphone and the right earphone are connected by a wire, and the first electrode and the third electrode are disposed on the left earphone, and the second electrode and the fourth electrode are disposed on the right earphone.

[0051] In a possible implementation, the first electronic device is a wearable device. The wearable device includes a movement and a watch band. The first electrode and the third electrode are located at one end of the watch band, and the second electrode and the fourth electrode are located at the other end of the watch band. The length of the watch band is greater than the first length.

[0052] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a strap. The movement includes a first button and a second button. The first electrode and the third electrode are located on the back of the movement, the second electrode is located on the first button, and the fourth electrode is located on the second button.

[0053] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a strap. The first electrode and the third electrode are located on the strap, the second electrode is located on the first button, and the fourth electrode is located on the second button.

[0054] In a possible implementation, the first electronic device is a mobile phone, which includes one or more buttons. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons, and the first electrode, the second electrode, the third electrode, and the fourth electrode do not contact each other.

[0055] In a possible implementation, one or more buttons of the mobile phone include a volume button and a fingerprint button. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons. Specifically, the first electrode and the third electrode are disposed on the volume button, and the second electrode and the fourth electrode are disposed on the fingerprint button.

[0056] In a possible implementation, one or more buttons of the mobile phone include a first volume button, a second volume button, and a fingerprint button. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons. Specifically, the first electrode is disposed on the first volume button, the third electrode is disposed on the second volume button, and the second electrode and the fourth electrode are disposed on the fingerprint button.

[0057] In a fourth aspect, the present application provides a monitoring system, which includes a first electronic device and a second electronic device. There is a wired connection between the first electronic device and the second electronic device, and the monitoring system includes the circuit in any one of the second aspect.

[0058] In this way, a monitoring circuit can be formed by multiple electronic devices to collaboratively monitor the heart function of the user.

[0059] In a possible implementation, the first electrode and the third electrode are located on the first electronic device, and the second electrode and the fourth electrode are located on the second electronic device.

[0060] In a possible implementation, the first electronic device is an earphone and the second electronic device is a mobile phone, or the first electronic device is a mobile phone and the second electronic device is an earphone.

[0061] Fifth aspect, the present application provides an electronic device, which is a first electronic device, including one or more processors, one or more memories, and a first circuit; the first circuit includes a first electrode, a second electrode, a third electrode, a fourth electrode, a first analog switch, a second analog switch, an excitation current generation unit, and a voltage measurement unit. The one or more memories are coupled to the one or more processors, and the one or more memories are used to store computer program code, and the computer program code includes computer instructions. When the one or more processors execute the computer instructions, the communication device is caused to execute the monitoring method in any possible implementation manner of any of the above aspects.

[0062] Sixth aspect, the present application provides a chip system, which is applied to the first electronic device. The chip system includes: a processing circuit and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processing circuit, and the processing circuit is used to run the code instructions so that the chip system executes the monitoring method in any possible implementation manner of any of the above aspects.

[0063] Seventh aspect, an embodiment of the present application provides a readable storage medium, including instructions. When the instructions run on the first electronic device, the first electronic device is caused to execute the monitoring method in any possible implementation manner of any of the above aspects.

[0064] Eighth aspect, an embodiment of the present application provides a computer program product. When the computer program product runs on a computer, the computer is caused to execute the monitoring method in any possible implementation manner of any of the above aspects.

[0065] The beneficial effects of the third aspect to the eighth aspect can refer to the beneficial effects of the first aspect to the second aspect above. Description of the Drawings

[0066] Figure 1 It is a schematic diagram of the system architecture of a health monitoring system 1000 provided by an embodiment of the present application;

[0067] Figures 2A - 2C It is a schematic diagram of the device forms of three earphones 10 provided by an embodiment of the present application;

[0068] Figures 3A - 3E It is a schematic diagram of the device forms of three watches 20 provided by an embodiment of the present application;

[0069] Figures 4A - 4B It is a schematic diagram of the device forms of two mobile phones 30 provided by an embodiment of the present application;

[0070] Figure 5A It is a schematic diagram of the hardware structure of an electronic device 100 provided by an embodiment of the present application;

[0071] Figure 5BSchematic diagram of a monitoring circuit provided by an embodiment of the present application;

[0072] Figure 5C Schematic diagram of a current signal generated by an excitation current generation unit provided by an embodiment of the present application;

[0073] Figure 5D Another schematic diagram of a monitoring circuit provided by an embodiment of the present application;

[0074] Figure 5E Schematic diagram of the circuit connection of a monitoring circuit provided by an embodiment of the present application;

[0075] Figures 5F - 5H Schematic diagram of the circuit connection when the analog switch is connected to different ports provided by an embodiment of the present application;

[0076] Figure 6A Schematic diagram of the positional relationship between thoracic tissue and the human body provided by an embodiment of the present application;

[0077] Figures 6B - 6F Schematic diagram of the distribution of multiple electrode contact points with the skin provided by an embodiment of the present application;

[0078] Figure 7 Schematic diagram of the process of a monitoring method provided by an embodiment of the present application;

[0079] Figure 8A Schematic diagram of the process of determining cardiac function indexes based on the cardiac impedance curve provided by an embodiment of the present application;

[0080] Figure 8B Schematic diagram of the cardiac impedance curve in a two-dimensional coordinate system provided by an embodiment of the present application;

[0081] Figure 8C Schematic diagram of the first derivative curve of the cardiac impedance curve in a two-dimensional coordinate system provided by an embodiment of the present application;

[0082] Figures 9A - 9C Schematic diagram of an interface for outputting a set of cardiac function indexes provided by an embodiment of the present application;

[0083] Figures 10A - 10C Schematic diagram of another interface for outputting cardiac function indexes provided by an embodiment of the present application;

[0084] Figure 11 Schematic diagram of the process of the output method for the earphone 10 to determine the cardiac function indexes provided by an embodiment of the present application;

[0085] Figure 12A Schematic diagram of the process of another monitoring method provided by an embodiment of the present application;

[0086] Figures 12B - 12D An interface for a set of mobile phones 30 to output prompts provided by an embodiment of the present application;

[0087] Figure 13 A schematic diagram of the functional modules of an electronic device 100 provided by an embodiment of the present application;

[0088] Figure 14 A schematic diagram of the functional modules of a health monitoring system 1000 provided by an embodiment of the present application;

[0089] Figure 15 A schematic diagram of the physical entity device of an electronic device 100 provided by an embodiment of the present application;

[0090] Figure 16 A schematic diagram of the process of a monitoring method provided by an embodiment of the present application. Detailed implementation manners

[0091] Next, the technical solutions in the embodiments of the present application will be clearly and elaborately described with reference to the accompanying drawings. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may represent A or B; "and / or" in the text is only a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0092] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as implying or suggesting relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0093] In the following embodiments of this application, the term "user interface (UI)" refers to the media interface for interaction and information exchange between an application or an operating system and a user. It realizes the conversion between the internal form of information and the form acceptable to the user. The user interface is the source code written in specific computer languages such as Java and Extensible Markup Language (XML). The interface source code is parsed and rendered on an electronic device and finally presented as content recognizable by the user. The common manifestation form of the user interface is the graphical user interface (GUI), which refers to the user interface related to computer operations presented in a graphical way. It can be visual interface elements such as text, icons, buttons, menus, tabs, text boxes, dialog boxes, status bars, navigation bars, and Widgets displayed on the display screen of an electronic device.

[0094] The following introduces some professional terms involved in the embodiments of this application.

[0095] Heart rate (HR): The heart rate refers to the number of times the heart beats per minute. Each time the heart beats, it can complete one contraction and one relaxation.

[0096] Cardiac output (CO): Cardiac output refers to the total volume of blood pumped out by one ventricle (left ventricle or right ventricle) per minute, also known as the minute output. The outputs of the left and right ventricles are basically equal.

[0097] Stroke volume (SV): Stroke volume refers to the volume of blood ejected by one ventricle (left ventricle or right ventricle) of the heart in a single pump. The product of stroke volume and heart rate is cardiac output.

[0098] Ejection fraction: Ejection fraction refers to the ratio of stroke volume to the total volume of blood in the heart.

[0099] Safe current for human body: The safe current for human body refers to the lowest safe current passing through the human body. When the current passing through the human body is less than or equal to the safe current for human body, this current will not cause damage to the human body.

[0100] Thoracic tissue: Thoracic tissue is a cavity surrounded by the sternum, thoracic vertebrae and ribs. It is connected to the neck at the upper part and separated from the abdominal cavity by the diaphragm at the lower part. Organs such as the heart and lungs are within the thoracic tissue.

[0101] Cardiac impedance curve: The cardiac impedance curve is a curve used to characterize the relationship between cardiac impedance and time. Among them, cardiac impedance is the ratio of the voltage across the heart to the current flowing through the heart. The heart is located in the thoracic tissue, which is a conductor, and the impedance of the thoracic tissue can also be regarded as the cardiac impedance (also known as the heart impedance). Therefore, by placing electrodes on the skin at both ends of the thoracic tissue (such as the left and right ends, or the upper and lower ends), and inputting a low-amplitude constant current into the thoracic tissue through the electrodes, the user's cardiac impedance curve can be determined based on the current flowing through the thoracic tissue and the voltage across the thoracic tissue. The cardiac impedance curve can be used to determine cardiac function indicators such as cardiac output and stroke volume.

[0102] Dermal resistance: The skin can conduct electricity, and dermal resistance is the resistance of the stratum corneum on the skin surface. In the embodiments of the present application, two electrodes can be in contact with the skin to conduct current through the skin. If the distance between the two electrodes is less than a preset distance (such as 5 cm, 3 cm, etc.), the resistance provided by the skin located between the two electrodes can be called dermal resistance.

[0103] Body resistance: In the embodiments of the present application, two electrodes can be in contact with the skin. If the line connecting the two contact points of the two electrodes with the skin can span both ends of the thoracic tissue (such as the upper and lower ends or the left and right ends), the resistance provided by the human body located between the two electrodes can be called body resistance. Since this part of the body includes the heart, in the embodiments of the present application, body resistance can also be called cardiac impedance.

[0104] Electrocardiogram (ECG): The heart pumps blood rhythmically, and its contraction and relaxation rhythms are controlled by electrocardiographic activity. Under normal circumstances, the sinoatrial node regularly emits impulses, which cause all myocardial cells to generate electrical impulses through the special conduction system. The electric field generated by this electrical impulse spreads throughout the body, and the tiny current generated passes through the body tissues and conducts to the body surface, causing different potentials at different parts of the body surface.

[0105] Principle of electrocardiogram measurement: Electrocardiogram measurement refers to measuring the potential difference at different parts of the body surface through electrodes in contact with the skin, and determining the user's electrocardiogram based on the relationship between the potential difference at different parts and time. According to the above explanation of the electrocardiogram terms, the potential difference at different parts of the user's body surface is caused by the regular impulses emitted by the sinoatrial node in the heart. Therefore, when measuring the potential difference at different parts, multiple electrodes can be in contact with the skin at different parts of the human body, and the potential difference between different parts can be measured through a voltage measurement unit.

[0106] The following introduces the system architecture of a health monitoring system 1000 provided by the embodiments of the present application.

[0107] As Figure 1As shown, the health monitoring system 1000 may include an electronic device 100 and an electronic device 200. Among them, a monitoring circuit may be provided in the electronic device 100. The monitoring circuit may include a plurality of electrodes. When the plurality of electrodes are in contact with a specified position of the user's skin, the electronic device 100 may determine the user's cardiac impedance curve through the monitoring circuit. The cardiac impedance curve can be used to determine the user's cardiac function indicators, which may include cardiac output and stroke volume. Optionally, the cardiac function indicators may also include heart rate.

[0108] In some embodiments, after the electronic device 100 determines the user's cardiac impedance curve, it may determine and output the user's cardiac function indicators based on the user's cardiac impedance curve. After determining the cardiac function indicators, the electronic device 100 may output the cardiac function indicators. In some embodiments, the electronic device 100 may establish a communication connection with the electronic device 200, and this communication connection may be a wired communication connection or a wireless communication connection. The wireless communication connection may be a wireless communication connection established by the electronic device 100 and the electronic device 200 using any one of wireless communication technologies such as wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), NearLink, etc. In this case, when the electronic device 100 outputs the cardiac function indicators, it may be to send an output instruction 1 to the electronic device 200. The output instruction 1 may include the cardiac function indicators, and the output instruction 1 is used to instruct the electronic device 200 to output the cardiac function indicators.

[0109] In some other embodiments, when the electronic device 100 and the electronic device 200 establish a communication connection, after the electronic device 100 determines the user's cardiac impedance curve, it may also send the cardiac impedance curve to the electronic device 200. The electronic device 200 may determine the user's cardiac function indicators based on the cardiac impedance curve sent by the electronic device 100. After that, the electronic device 200 may output the cardiac function indicators or send an output instruction 2 to the electronic device 100. The output instruction 2 may include the cardiac function indicators, and the output instruction 2 can be used to instruct the electronic device 100 to display the cardiac function indicators.

[0110] In the health monitoring system 1000, the electronic device 100 may be Figure 1The earphone shown can also be a wearable device such as a watch or a bracelet, or an electronic device such as a mobile phone or a tablet computer. The electronic device 200 can be Figure 1 the mobile phone shown, or a wearable device such as a watch or a bracelet, or an electronic device such as a tablet computer. This application does not make any limitation here.

[0111] It can be understood that Figure 1 the health monitoring system 1000 shown is only an example. In the embodiments of this application, the health monitoring system 1000 may further include more, fewer or different electronic devices from those in the above embodiments. This application does not make any limitation here.

[0112] Next, the schematic diagrams of the device forms of various electronic devices 100 provided in the embodiments of this application are introduced.

[0113] In some application scenarios, the electronic device 100 can be an earphone 10. Figures 2A to 2C The schematic diagrams of the device forms of three earphones 10 provided in the embodiments of this application are shown.

[0114] Exemplarily, the earphone 10 can be the Figure 2A Bluetooth earphone shown below.

[0115] As Figure 2A shown, the earphone 10 may include a left earphone 11 and a right earphone 12. There is a wired connection between the left earphone 11 and the right earphone 12, and this wired connection can be achieved through the Figure 2A connection line shown (such as an electrical connection line, etc.). It should be noted that the connection line between the left earphone 11 and the right earphone 12 can be used to conduct current.

[0116] One or more electrodes, such as electrode 1, can be provided on the surface of the left earphone 11. When the user wears the left earphone 11 on the left ear, electrode 1 can contact the user's skin. Similarly, one or more electrodes, such as electrode 2, can also be provided on the surface of the right earphone 12, and when the user wears the right earphone 12 on the right ear, electrode 2 can contact the user's skin. In some embodiments, electrode 3 can also be provided on the surface of the left earphone 11, and electrode 4 can also be provided on the surface of the right earphone 12. Among them, on the left earphone 11, electrode 3 and electrode 1 do not contact each other, and when the user wears the left earphone 11 on the left ear, electrode 3 can also contact the user's skin; on the right earphone 12, electrode 4 and electrode 2 do not contact each other, and when the user wears the right earphone 12 on the right ear, electrode 4 can also contact the user's skin.

[0117] The earphone 10 may further include an excitation current generation unit, a voltage measurement unit, and one or more analog switches (such as analog switch S1, analog switch S2), etc. Among them, the excitation current generation unit and the voltage measurement unit may be provided inside the earphone 10, and the one or more analog switches may also be provided inside the earphone 10, or may be provided as mechanical switches visible outside the earphone 10. For example, in Figure 2A In the illustrated embodiment, an excitation current generation unit and an analog switch S1 may be provided inside the left earphone 11, and a voltage measurement unit and an analog switch S2 may be provided inside the right earphone 12.

[0118] It can be understood that Figure 2A The illustrated embodiment is only an example. In the embodiments of the present application, circuit components such as the excitation current generation unit, the voltage measurement unit, and the analog switch may also be provided at other positions inside the earphone 10, or the analog switch may be provided as a mechanical switch on the surface of the earphone 10, etc. The present application does not make any limitations here.

[0119] Exemplarily again, the earphone 10 may also be the following Figure 2B illustrated Bluetooth earphone.

[0120] As Figure 2B shown, the earphone 10 may include a left earphone 11 and a right earphone 12, and there is a wired connection between the left earphone 11 and the right earphone 12, and this wired connection may be realized through the Figure 2B shown connection bracket. It should be noted that the connection bracket between the left earphone 11 and the right earphone 12 can be used to conduct current. Compared with the Figure 2A shown connecting wire, the connection bracket has a certain supporting ability, and the supporting ability of the connection bracket can enable the connection bracket to maintain a specific shape (such as an arc shape). In some embodiments, the connection bracket may also have a certain deformation ability, such as unfolding the connection bracket into a straight line shape, etc.

[0121] In Figure 2B the shown earphone 10, one or more electrodes (such as electrode 1, electrode 2, electrode 3, and electrode 4, etc.) may be respectively provided on the surfaces of the left earphone 11 and the right earphone 12, and the distribution positions of the electrodes may refer to the relevant descriptions in the above Figure 2A shown embodiment. In addition, Figure 2B in the shown earphone 10, it may also include circuit components such as an excitation current generation unit, a voltage measurement unit, and one or more analog switches (such as analog switch S1 and analog switch S2), etc., and the positions of these multiple circuit components may also refer to the relevant descriptions in the above Figure 2A shown embodiment.

[0122] Exemplarily again, the earphone 10 may also be the following Figure 2C shown wired earphone.

[0123] As Figure 2C shown, the earphone 10 may include a left earphone 11, a right earphone 12, and a connecting wire 13. Among them, the connecting wire 13 is a multi-terminal connecting wire. The connecting wire 13 may include three ports, two of which may be respectively connected to the left earphone 11 and the right earphone 12, and the remaining one port may be vacant or connected to other electronic devices (such as a mobile phone, a tablet computer, etc.). It should be noted that the connecting wire 13 can be used to conduct current.

[0124] In Figure 2C the earphone 10 shown, one or more electrodes (such as electrode 1, electrode 2, electrode 3, and electrode 4, etc.) may also be respectively arranged on the surfaces of the left earphone 11 and the right earphone 12, and the distribution positions of the electrodes may refer to the relevant descriptions in the above Figure 2A shown embodiments. In addition, Figure 2C in the earphone 10 shown, circuit components such as an exciting current generating unit, a voltage measuring unit, and one or more analog switches (such as analog switch S1 and analog switch S2) may also be included, and the positions of the multiple circuit components may also refer to the relevant descriptions in the above Figure 2A shown embodiments.

[0125] It can be understood that Figures 2A to 2C the shown embodiments are only some examples. In the embodiments of the present application, the earphone 10 may also be an over-ear headphone or other device forms different from the above embodiments, and the present application does not make any limitations here.

[0126] It should be noted that in the earphone 10 shown above Figures 2A to 2C the connecting wire or the connecting bracket between the left earphone 11 and the right earphone 12 is deformable. Therefore, the distance between the left earphone 11 and the right earphone 12 can be adjusted, and the distance between the electrodes on the left earphone 11 and the electrodes on the right earphone 12 can also be adjusted. In this way, during the measurement process, the user can adjust the distance between the left earphone 11 and the right earphone 12 according to the actual measurement scenario, so as to adjust the distance between the electrodes on the left earphone 11 and the electrodes on the right earphone 12, and measure a more accurate result.

[0127] In some application scenarios, the electronic device 100 may be a watch 20. The watch 20 may include a movement and a watch band. The multiple electrodes of the watch 20 may all be arranged on the watch band, or all be arranged on the movement, or may be respectively arranged on the movement and the watch band. Figures 3A to 3E Shows schematic diagrams of three device forms of the watch 20 provided by the embodiments of the present application.

[0128] Exemplarily, as Figure 3AAs shown, the watch 20 may include a movement 21 and a watch band 22. The movement 21 may include a display screen, which can be used to display monitoring results and can also be used for information such as time. The watch 20 may include a plurality of electrodes, such as electrode 1 and electrode 2. Optionally, it may also include electrode 3 and electrode 4. The plurality of electrodes may be provided on the watch band 22.

[0129] The watch band 22 may include a front side and a back side. When the watch 20 is placed on a tabletop (or other horizontal plane) with the display screen facing up, the side of the watch band 22 facing up is the front side of the watch band 22, and the side of the watch band 22 in contact with the tabletop (or other horizontal plane) is the back side of the watch band 22. A plurality of electrodes may be provided on the watch band 22, and the plurality of electrodes may be provided on the same side of the watch band 22. For example, the plurality of electrodes may all be provided on the front side of the watch band 22, or may all be provided on the back side of the watch band 22. In addition, the watch band 22 may include two ends, namely Figure 3A the A end and the B end shown. Electrode 1 and electrode 2 may be respectively provided at different ends of the watch band 22. For example, in Figure 3A the embodiment shown, electrode 1 and electrode 3 may be provided at the A end of the watch band 22, electrode 2 and electrode 4 may be provided at the B end of the watch band 22, and the above-mentioned plurality of electrodes are all provided on the front side of the watch band 22. In addition, the plurality of electrodes provided on the watch band 22 do not contact each other.

[0130] It should be noted that in the above case, the distance between electrode 1 and electrode 2 needs to be greater than the minimum length, and the minimum length may be the preset average length of the human heart. In this way, when measuring, electrode 1 and electrode 2 can span both ends of the heart to determine the cardiac impedance. In some other embodiments, the distance between electrode 1 and electrode 2 also needs to be less than or equal to the maximum length, and the maximum length may be the length of the watch band 22 or a preset length value. On the premise of ensuring that electrode 1 and electrode 2 can span both ends of the heart, the closer the distance between electrode 1 and electrode 2 is to the heart, the more accurate the measurement result is. In this way, the accuracy of the measurement result can be improved.

[0131] It can be understood that Figure 3A the watch 20 shown is just an example. In some embodiments, one or more buttons (such as a crown, etc.) may also be provided on the movement 21, which is not limited in this application. In addition, this application does not limit the shapes of the movement 21 and the display screen, the shape and length of the watch band 22, etc.

[0132] In some other embodiments, multiple electrodes in the watch 20 can also be disposed on the movement 21, for example, respectively on the back of the movement 21 and on the buttons of the movement 21. The movement 21 can include a front side and a back side. When the user wears the watch 20, the side in contact with the user's skin is the back side of the movement 21, and the side opposite to the back side is the front side of the movement 21. Exemplarily, the electrode distribution on the buttons of the movement 21 can refer to the following Figure 3B illustrated embodiment, and the electrode distribution on the back of the movement 21 can refer to the following Figure 3C illustrated embodiment.

[0133] As Figure 3B illustrated, in the watch 20, one or more buttons (including the crown, etc.) can be disposed on the movement 21, and one or more of the one or more buttons can be provided with electrodes. For example, one of the buttons can be provided with electrode 2. Optionally, another button can also be provided with electrode 4, and electrode 2 and electrode 4 do not contact each other. At the same time, electrode 1 can be disposed on the back of the movement 21. Optionally, electrode 3 can also be disposed, and electrode 1 and electrode 3 do not contact each other.

[0134] As Figure 3C illustrated, in the watch 20, electrode 1 can be disposed on the back of the movement 21. Optionally, electrode 3 can also be disposed. When electrode 1 and electrode 3 are disposed on the back of the movement 21, electrode 1 and electrode 3 do not contact each other. At the same time, one or more buttons (including the crown, etc.) can be disposed on the movement 21, and one or more of the one or more buttons can be provided with electrodes. For example, one of the buttons can be provided with electrode 2. Optionally, another button can also be provided with electrode 4, and electrode 2 and electrode 4 do not contact each other.

[0135] In some other embodiments, multiple electrodes in the watch 20 can also be respectively disposed on the movement 21 and the watch band 22. Exemplarily, the electrode distribution on the movement 21 can refer to the following Figure 3D illustrated embodiment, and the electrode distribution on the watch band 22 can refer to the following Figure 3E illustrated embodiment.

[0136] As Figure 3DAs shown, in the watch 20, one or more buttons (including the crown, etc.) can be provided on the movement 21. One or more of the one or more buttons can be provided with electrodes. For example, electrode 2 can be provided on one of the buttons. Optionally, electrode 4 can also be provided on another button, and electrode 2 and electrode 4 do not contact each other. At the same time, electrode 1 can be provided on the watch band 22. Optionally, electrode 3 can also be provided on the watch band 22, and electrode 1 and electrode 3 do not contact each other. It should be noted that the electrodes on the watch band 22 are provided on the back of the watch band 22. The back of the watch band 22 refers to the side of the watch band 22 that contacts the user's wrist when the user wears the watch 20. Moreover, when the user wears the watch 20, electrode 1 and electrode 3 can contact the user's wrist.

[0137] As Figure 3E shown, in the watch 20, electrode 1 can be provided on the back of the watch band 22. Optionally, electrode 3 can also be provided on the back of the watch band 22. The positional relationship between electrode 1 and electrode 3 relative to the movement 21 can be the same. For example, both are located on the left side (or right side) of the movement 21. The positional relationship between electrode 1 and electrode 3 relative to the movement 21 can also be different. For example, electrode 1 is located on the left side of the movement 21, and electrode 3 is located on the right side of the movement 21. When electrode 1 and electrode 3 are provided on the back of the watch band 22, electrode 1 and electrode 3 do not contact each other. At the same time, one or more buttons (including the crown, etc.) can be provided on the movement 21. One or more of the one or more buttons can be provided with electrodes. For example, electrode 2 can be provided on one of the buttons. Optionally, electrode 4 can also be provided on another button, and electrode 2 and electrode 4 do not contact each other.

[0138] In some other embodiments, electrode 1 and electrode 3 can also be provided on the front of the watch band 22. The front of the watch band 22 is the side opposite to the back of the watch band 22. In this case, electrode 2 and electrode 4 can be provided on the back of the movement 21, or on the side of the button that contacts the user's wrist. This application does not make a limitation here.

[0139] It can be understood that Figures 3A to 3E these are just three examples. In the embodiments of this application, the electrodes can also be provided at other positions of the watch 20. In addition, the watch 20 in the above embodiments can also be replaced with wearable devices such as smart bracelets. This application does not make a limitation here.

[0140] Figure 4A Fig. shows a schematic diagram of the device form of a mobile phone 30 provided by the embodiments of this application.

[0141] As Figure 4BAs shown, the mobile phone 30 may include one or more keys and a plurality of electrodes. One or more of the plurality of electrodes may be disposed on the one or more keys. Exemplarily, the one or more keys may include a volume key 31, a volume key 32, a fingerprint key 33, etc. The plurality of electrodes may include an electrode 1 and an electrode 2. Optionally, the plurality of electrodes may further include an electrode 3 and an electrode 4. The plurality of electrodes may be respectively disposed on different keys, or respectively disposed in different regions of the same key. For example, the electrode 1 may be disposed on the volume key 31, and the electrode 3 may be disposed on the volume key 32. The electrode 2 may be disposed in the upper half region of the fingerprint key 33, and the electrode 4 may be disposed in the lower half region of the fingerprint key 33. It should be noted that the electrode 1 and the electrode 3 do not contact each other, and the electrode 2 and the electrode 4 do not contact each other.

[0142] Figure 4B FIG. shows a schematic diagram of another device form of the mobile phone 30 provided by an embodiment of the present application.

[0143] As Figure 4B shown, the mobile phone 30 may include a plurality of electrodes, a front camera, a microphone, etc. The plurality of electrodes may include an electrode 1 and an electrode 2. Optionally, it may further include an electrode 3 and an electrode 4. The mobile phone 30 may have four sides, an upper side, a lower side, a left side, and a right side. Among them, the upper side is the side closest to the front camera and / or the microphone, the lower side is the side parallel to the upper side, the left side and the right side are two parallel sides, and both the left side and the right side are perpendicular to the upper side. The plurality of electrodes of the mobile phone 30 may be respectively disposed on the left side and the right side of the mobile phone 30. For example, the electrode 1 and the electrode 3 are disposed on the left side of the mobile phone 30, and the electrode 2 and the electrode 4 are disposed on the right side of the mobile phone 30. It should be noted that the electrode 1 and the electrode 3 do not contact each other, and the electrode 2 and the electrode 4 do not contact each other.

[0144] It can be understood that Figure 4A and Figure 4B are only two examples. In some embodiments, the mobile phone 30 may also be a mobile phone with a folding screen, or include more, fewer, or different keys than those shown in the above Figure 4A embodiment, and may also be other mobile phones with different forms from those shown in the above embodiment. Moreover, the electrodes in the mobile phone 30 may also be disposed at positions different from those in the above embodiment (for example, respectively disposed on the upper side and the lower side of the mobile phone 30, or disposed on the back of the mobile phone 30, etc.). The present application does not make any limitations here. In other embodiments, the mobile phone 30 may also be replaced with an electronic device such as a tablet computer, and the present application does not make any limitations here either.

[0145] Figure 5A FIG. shows a schematic diagram of the hardware structure of an electronic device 100 provided by an embodiment of the present application.

[0146] The electronic device 100 may be the aboveFigures 2A to 2C The earphone 10 in the illustrated embodiment may also be Figures 3A to 3C the watch 20 (or other wearable devices such as a bracelet) in the illustrated embodiment, or may also be Figures 4A to 4B the illustrated mobile phone, etc. In some embodiments, the electronic device 100 may also be a tablet computer, a handheld computer, a cellular phone, a personal digital assistant (PDA), an augmented reality (AR) device, a virtual reality (VR) device, an artificial intelligence (AI) device, a vehicle-mounted device, a smart home device, and / or a smart city device. The specific type of the electronic device is not particularly limited in the embodiments of the present application.

[0147] As Figure 5A shown, the electronic device 100 may include a processor 110, an internal memory 121, a charging management module 140, a power management module 141, a battery 142, a wireless communication module 160, an audio module 170, and a sensor module 180. In some embodiments, the electronic device 100 may further include any one or more of the following: a button 190, a motor 191, an indicator 192, a display screen 194, etc. The sensor module 180 may include an electrode sensor 180E and a touch sensor 180K. In some embodiments, the sensor module 180 may further include any one or more of the following: a pressure sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint sensor, a temperature sensor, an ambient light sensor, a bone conduction sensor, an airbag sensor, etc.

[0148] It can be understood that the structure schematically shown in the embodiments of the present invention does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than those shown in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0149] The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated in one or more processors.

[0150] The controller may generate operation control signals according to the instruction operation code and timing signals to complete the control of fetching and executing instructions.

[0151] A memory may also be provided in the processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. This memory may save the instructions or data that the processor 110 has just used or recycled. If the processor 110 needs to use the instruction or data again, it can directly call it from the memory. This avoids repeated accesses, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0152] In some embodiments, the processor 110 may include one or more interfaces. The interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface, etc.

[0153] The charging management module 140 is used to receive charging input from a charger. Herein, the charger can be a wireless charger or a wired charger. In some embodiments of wired charging, the charging management module 140 can receive the charging input from a wired charger. In some embodiments of wireless charging, the charging management module 140 can receive wireless charging input through the wireless charging coil of the electronic device 100. While charging the battery 142, the charging management module 140 can also supply power to the electronic device through the power management module 141.

[0154] The power management module 141 is used to connect the battery 142, the charging management module 140, and the processor 110. The power management module 141 receives inputs from the battery 142 and / or the charging management module 140 and supplies power to the processor 110, the internal memory 121, the display screen 194, the wireless communication module 160, etc. The power management module 141 can also be used to monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage, impedance). In some other embodiments, the power management module 141 can also be provided in the processor 110. In some other embodiments, the power management module 141 and the charging management module 140 can also be provided in the same device.

[0155] The wireless communication module 160 can provide solutions for wireless communications applied to the electronic device 100, including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), NearLink, etc. The wireless communication module 160 can be one or more devices integrating at least one communication processing module.

[0156] The electronic device 100 realizes the display function through the GPU, the display screen 194, and the application processor, etc. The GPU is a microprocessor for image processing, connecting the display screen 194 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs, which execute program instructions to generate or change display information.

[0157] The display screen 194 is used to display images, videos, etc. The display screen 194 includes a display panel. The display panel can be a liquid crystal display (LCD), and the display panel can also be an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a MiniLED, a MicroLED, a Micro-oLED, a quantum dot light-emitting diode (QLED), etc. In some embodiments, the electronic device 100 may include one or N display screens 194, where N is a positive integer greater than 1.

[0158] The internal memory 121 may include one or more random access memories (RAMs) and one or more non-volatile memories (NVMs). The random access memory can be directly read and written by the processor 110, and can be used to store the operating system or executable programs of other running programs (such as machine instructions), and can also be used to store user and application program data, etc. The non-volatile memory can also store executable programs and store user and application program data, etc., and can be pre-loaded into the random access memory for the processor 110 to directly read and write.

[0159] The electronic device 100 can implement audio functions through the audio module 170 and the application processor, etc. For example, music playback, recording, etc. The audio module 170 may include any one or more of the following: a speaker 170A, a receiver 170B, and a microphone 170C.

[0160] The audio module 170 is used to convert digital audio information into an analog audio signal for output, and is also used to convert analog audio input into a digital audio signal. The audio module 170 can also be used to encode and decode audio signals. In some embodiments, the audio module 170 can be disposed in the processor 110, or some functional modules of the audio module 170 can be disposed in the processor 110.

[0161] The speaker 170A, also known as the "horn", is used to convert an audio electrical signal into a sound signal. The electronic device 100 can listen to music or hands-free calls through the speaker 170A.

[0162] The receiver 170B, also known as the "earpiece", is used to convert an audio electrical signal into a sound signal. When the electronic device 100 answers a call or a voice message, the voice can be received by bringing the receiver 170B close to the human ear.

[0163] The microphone 170C, also known as the "microphone" or "transmitter", is used to convert a sound signal into an electrical signal. When making a call or sending a voice message, the user can speak close to the microphone 170C with the mouth to input the sound signal into the microphone 170C. The electronic device 100 can be provided with at least one microphone 170C. In some other embodiments, the electronic device 100 can be provided with two microphones 170C, which can not only collect sound signals but also implement a noise reduction function. In some other embodiments, the electronic device 100 can also be provided with three, four or more microphones 170C to collect sound signals, reduce noise, identify the sound source, and implement functions such as directional recording.

[0164] In some embodiments, the audio module 170 may further include a headphone jack for connecting a wired headphone. The headphone jack can be a USB jack or a 3.5 mm open mobile terminal platform (OMTP) standard jack, or a cellular telecommunications industry association of the USA (CTIA) standard jack.

[0165] The electrode sensor 180E may refer to multiple electrodes in a monitoring circuit, such as the electrode 1, electrode 2, electrode 3, and electrode 4 in the above Figure 2A illustrated embodiments. For the specific content of the monitoring circuit, reference can be made to the relevant descriptions in the following Figures 5D to 5H illustrated embodiments, which will not be elaborated here for the time being.

[0166] The touch sensor 180K, also known as the "touch control device". The touch sensor 180K can be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, also known as the "touch control screen". The touch sensor 180K is used to detect a touch operation applied thereto or nearby. The touch sensor can transmit the detected touch operation to the application processor to determine the type of touch event. Visual output related to the touch operation can be provided through the display screen 194. In some other embodiments, the touch sensor 180K can also be disposed on the surface of the electronic device 100 at a position different from that of the display screen 194.

[0167] Optionally, the sensor module 180 may further include, but is not limited to, any one or more of the following: a pressure sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, an ambient light sensor, a fingerprint sensor, a temperature sensor, a bone conduction sensor, a barometric pressure sensor, etc.

[0168] The pressure sensor is used to sense pressure signals and can convert pressure signals into electrical signals. In some embodiments, the pressure sensor may be disposed on the display screen 194. When a touch operation acts on the display screen 194, the electronic device 100 detects the intensity of the touch operation according to the pressure sensor. The electronic device 100 can also calculate the position of the touch according to the detection signal of the pressure sensor. In some embodiments, touch operations acting on the same touch position but with different touch operation intensities may correspond to different operation instructions.

[0169] The gyroscope sensor can be used to determine the motion posture of the electronic device 100. In some embodiments, the angular velocity of the electronic device 100 around three axes (i.e., the x, y, and z axes) can be determined by the gyroscope sensor.

[0170] The barometric pressure sensor is used to measure barometric pressure. In some embodiments, the electronic device 100 calculates the altitude according to the barometric pressure value measured by the barometric pressure sensor to assist in positioning and navigation.

[0171] The magnetic sensor includes a Hall sensor. In some embodiments, the electronic device 100 can utilize the magnetic sensor to implement functions such as a compass.

[0172] The acceleration sensor can detect the magnitude of the acceleration of the electronic device 100 in various directions (generally three axes). When the electronic device 100 is stationary, the magnitude and direction of gravity can be detected. It can also be used to identify the posture of the electronic device and is applied to applications such as horizontal and vertical screen switching and pedometers.

[0173] The distance sensor is used to measure distance. The electronic device 100 can measure distance through infrared or laser.

[0174] The proximity light sensor may include, for example, a light-emitting diode (LED) and a light detector, such as a photodiode. The light-emitting diode may be an infrared light-emitting diode. The electronic device 100 emits infrared light outward through the light-emitting diode. The electronic device 100 uses the photodiode to detect the infrared reflected light from nearby objects. When sufficient reflected light is detected, it can be determined that there is an object near the electronic device 100. When insufficient reflected light is detected, the electronic device 100 can determine that there is no object near the electronic device 100.

[0175] The ambient light sensor is used to sense the ambient light brightness.

[0176] The fingerprint sensor is used to collect fingerprints. The electronic device 100 can use the collected fingerprint characteristics to achieve fingerprint unlocking, access to application locks, fingerprint photography, fingerprint answering of incoming calls, etc.

[0177] The temperature sensor is used to detect temperature. In some embodiments, the electronic device 100 uses the temperature detected by the temperature sensor to execute a temperature processing strategy. In some embodiments, the temperature sensor can be used to detect the temperature of the electronic device 100. In some embodiments, the temperature sensor can also be used to detect the body temperature of the user. In other embodiments, the temperature sensor can also be used to detect the temperature of the environment where the electronic device 100 is located.

[0178] The bone conduction sensor can obtain vibration signals. In some embodiments, the bone conduction sensor can also contact the human pulse to receive blood pressure pulsation signals. In some embodiments, the application processor can analyze the heart rate information based on the blood pressure pulsation signals obtained by the bone conduction sensor 180M to achieve the heart rate detection function.

[0179] The airbag sensor can be used to detect the blood pressure of the user.

[0180] The button 190 includes a power-on button, a volume button, etc. The button 190 can be a mechanical button or a touch button. The electronic device 100 can receive button inputs and generate key signal inputs related to the user settings and function controls of the electronic device 100.

[0181] The motor 191 can generate vibration prompts. The motor 191 can be used for incoming call vibration prompts and also for touch vibration feedback. For example, touch operations on different applications (such as photography, audio playback, etc.) can correspond to different vibration feedback effects. Touch operations on different regions of the display screen 194 can also correspond to different vibration feedback effects for the motor 191. Different application scenarios (such as time reminder, receiving information, alarm clock, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

[0182] The indicator 192 can be an indicator light and can be used to indicate the charging status, power change, and can also be used to indicate messages, missed calls, notifications, etc.

[0183] It should be noted that in the embodiments of the present application, the hardware structure of the electronic device 200 can refer to the hardware structure of the electronic device 100 shown above. Figure 5A This application will not elaborate here.

[0184] An embodiment of the present application provides a monitoring method. The electronic device 100 may include a monitoring circuit, and the monitoring circuit may include electrode 1 and electrode 2, and electrode 1 and electrode 2 are respectively arranged at different positions on the surface of the electronic device 100. The electronic device 100 may receive and respond to the operation of the user to turn on the heart function monitoring, or receive and respond to the start instruction sent by the electronic device 200, and determine and output the heart function index of the user through electrode 1 and electrode 2. The heart function index may include cardiac output and stroke volume. When the electronic device 100 performs heart function monitoring, electrode 1 contacts the contact point 1 on the skin, electrode 2 contacts the contact point 2 on the skin, and the contact point 1 and the contact point 2 are respectively located at both ends of the thoracic tissue (such as the upper end and the lower end, or the left end and the right end). Among them, the electronic device 100 may be a portable device such as an earphone, a watch, a bracelet or a mobile phone.

[0185] In this way, the user can perform heart function monitoring through the electronic device 100. Moreover, since the electronic device 100 is a device frequently used in daily life and is easy to carry, the user can obtain the heart function monitoring results in real time.

[0186] Next, a monitoring circuit in an electronic device 100 provided by an embodiment of the present application is introduced.

[0187] Figure 5B A schematic structural diagram of a monitoring circuit provided by an embodiment of the present application is shown.

[0188] As Figure 5B shown, the monitoring circuit may include an excitation current generation unit, a voltage measurement unit, electrode 1, electrode 2, and an analog switch S0.

[0189] Among them, both ends of the analog switch S0 may be respectively connected to the excitation current generation unit and electrode 1.

[0190] The excitation current generation unit may include a positive electrode and a negative electrode. The positive electrode and the negative electrode may be respectively connected to the analog switch S0 and electrode 2. The excitation current generation unit may generate a constant current. The current signal generated by the excitation current generation unit may refer to the relevant description in the following Figure 5D shown embodiment, and will not be elaborated here for the time being.

[0191] The voltage measurement unit may be connected to the excitation current generation unit in a parallel manner. For example, the voltage measurement unit may include a positive electrode and a negative electrode. One end may be connected to electrode 2 and the negative electrode of the excitation current generation unit, and the other end may be connected to the positive electrode of the excitation current generation unit. The voltage measurement unit may measure the voltage across electrode 1 and electrode 2.

[0192] When both electrode 1 and electrode 2 are in good contact with the user's skin, and the contact positions of electrode 1 and electrode 2 with the skin are respectively at both ends of the thoracic tissue, due to the resistance of the human body, electrode 1 can be regarded as being connected to electrode 2 through the body resistance. In this case, if the analog switch S0 is closed, a loop can be formed between electrode 1 and electrode 2. By measuring the current flowing through the body resistance and the voltage across the body resistance in this loop, the user's cardiac impedance can be determined. The user's cardiac impedance is the ratio of the voltage across the body resistance to the current flowing through the body resistance.

[0193] It should be noted that measuring cardiac function requires determining the user's cardiac impedance, so it is necessary to determine the current flowing through the user's heart and the voltage across the user's heart. Compared with the principle of electrocardiogram measurement, measuring cardiac function requires an excitation current generation unit to generate the current flowing through the user's heart. Therefore, the monitoring circuit for measuring the user's cardiac impedance needs to include an excitation current generation unit, while the circuit for measuring electrocardiogram does not require an excitation current generation unit.

[0194] It can be understood that Figure 5B only an exemplary introduction of a monitoring circuit capable of measuring the user's cardiac impedance is given. In the embodiments of the present application, the monitoring circuit may also include Figure 5B more circuit components (such as electrodes, etc.) than the illustrated embodiments, or include circuit components different from the above embodiments, which are not limited herein.

[0195] Figure 5C shows a schematic diagram of a current signal generated by an excitation current generation unit provided in an embodiment of the present application.

[0196] As Figure 5C shown, in a two-dimensional coordinate system, the horizontal axis can represent time, and the vertical axis can represent the current value. The current signal generated by the excitation current generation unit can be Figure 5C the current signal I shown. The current signal I can be a sinusoidal signal with a constant frequency, and the frequency of the current signal I can be f1 kilohertz (kHz). In some embodiments, f1 can be greater than or equal to 1.

[0197] It can be understood that Figure 5C the current signal shown is only an example. In other embodiments, the current signal can also be a cosine signal, or a square wave signal, etc., which are not limited herein.

[0198] In some embodiments, the monitoring circuit in the electronic device 100 can not only measure the user's cardiac impedance, but also determine whether the electrodes are in good contact with the user's skin.

[0199] Exemplarily, Figure 5D shows a schematic structural diagram of another monitoring circuit provided in an embodiment of the present application.

[0200] As shown Figure 5D in the figure, the monitoring circuit may include an excitation current generation unit, a voltage measurement unit, one or more analog switches, and a plurality of electrodes. Among them, the one or more analog switches may include analog switch S1 and analog switch S2, and the plurality of electrodes may include electrode 1, electrode 2, electrode 3, and electrode 4.

[0201] In the monitoring circuit, the excitation current generation unit may include a positive terminal and a negative terminal. The positive terminal and the negative terminal may be connected to analog switch S2 and analog switch S1 respectively. For example, the positive terminal may be connected to analog switch S2, and the negative terminal may be connected to analog switch S1. The excitation current generation unit may generate current. It should be noted that the waveform schematic diagram of the current signal generated by the excitation current generation unit may refer to the relevant description in the above Figure 5C illustrated embodiment. In some embodiments, in different scenarios, the frequency of the current signal generated by the excitation current generation unit may be different. For example, when the monitoring circuit measures the cardiac impedance of a user, the frequency of the current signal generated by the excitation current generation unit may be greater than or equal to 1 kHz; when the monitoring circuit determines whether the electrode is in good contact with the user's skin, the frequency of the current signal may be less than 1 kHz. In some other embodiments, the excitation current generation unit may also generate the same current signal in different scenarios. For example, it generates a current signal with a frequency greater than or equal to 1 kHz, etc. This application does not make a limitation here.

[0202] One end of the voltage measurement unit may be connected to electrode 4, and the other end may be connected to electrode 3. The voltage measurement unit may measure the voltage across electrode 3 and electrode 4. In some other embodiments, the two ends of the voltage measurement unit may also be connected to electrode 1 and electrode 2 respectively. At this time, the voltage measurement unit may measure the voltage across electrode 1 and electrode 2.

[0203] Analog switch S1 may include two ports, port A1 and port A2. Among them, port A1 may be connected to electrode 1, and port A2 may be connected to electrode 4. Analog switch S1 may select to connect port A1 or port A2, or may also select not to connect either port.

[0204] Analog switch S2 may include two ports, port B1 and port B2. Among them, port B1 may be connected to electrode 2, and port B2 may be connected to electrode 3. Analog switch S2 may select to connect port B1 or port B2, or may also select not to connect either port.

[0205] When none of the electrodes in the monitoring circuit are in contact with the user's skin (or the contact is poor), any two electrodes in the monitoring circuit are not connected to each other because they do not touch each other. When multiple electrodes in the monitoring circuit are in good contact with the user's skin, due to the existence of resistance in the human body (such as skin resistance, body resistance, etc.), the electrodes in the monitoring circuit can be connected to another electrode through the skin, body, etc.

[0206] In the embodiment of the present application, the contact point between electrode 1 and the user's skin can be called contact point 1, the contact point between electrode 2 and the user's skin can be called contact point 2, the contact point between electrode 3 and the user's skin can be called contact point 3, and the contact point between electrode 4 and the user's skin can be called contact point 4. When all the electrodes in the monitoring circuit are in contact with the user's skin, since the distance between electrode 1 and electrode 3 is relatively close, and the distance between electrode 2 and electrode 4 is relatively close, electrode 1 and electrode 3 can be regarded as connected through skin resistance 1, and this skin resistance 1 is the resistance of the skin located between electrode 1 and electrode 3. Electrode 2 and electrode 4 can be regarded as connected through skin resistance 2, and this skin resistance 2 is the resistance of the skin located between electrode 2 and electrode 4. Similarly, electrode 1 and electrode 2, and electrode 3 and electrode 4 can also be regarded as connected through skin resistance. If contact point 1 and contact point 2 are respectively located at both ends of the thoracic tissue, the resistance between contact point 1 and contact point 2 can be equivalent to the body resistance of the user (also called cardiac resistance). At this time, electrode 1 and electrode 2 can be regarded as connected through this body resistance, and electrode 3 and electrode 4 can also be regarded as connected through this body resistance. In this case, the monitoring circuit can determine the cardiac impedance of the user, thereby determining the cardiac output and stroke volume of the user.

[0207] Figure 5E The circuit connection schematic diagram of a monitoring circuit provided by the embodiment of the present application is shown.

[0208] As Figure 5E shown, the monitoring circuit may include the following circuit components: electrode 1, electrode 2, electrode 3, electrode 4, analog switch S1, analog switch S2, excitation current generation unit AC, voltage measurement unit V, etc.

[0209] Among them, the positive pole of the voltage measurement unit V can be connected to electrode 4, and the negative pole can be connected to electrode 3. The voltage measurement unit V can be used to measure the voltage across electrode 3 and electrode 4. In some other embodiments, the positive pole of the voltage measurement unit can also be connected to electrode 3, and the negative pole is connected to electrode 4.

[0210] The positive electrode of the excitation current generation unit AC can be connected to the analog switch S2, and the negative electrode of the excitation current generation unit AC can be connected to the analog switch S1. The analog switch S1 can include two ports, port A1 and port A2. Among them, port A1 can be connected to electrode 1, and port A2 can be connected to electrode 4. The analog switch S1 can receive and respond to an instruction sent by the electronic device 100 (or other electronic devices), and select to connect port A1 or port A2, or not connect either port. Similarly, the analog switch S2 can also include two ports, port B1 and port B2. Among them, port B1 can be connected to electrode 2, and port B2 can be connected to electrode 3. The analog switch S1 can receive and respond to an instruction sent by the electronic device 100 (or other electronic devices), and select to connect port B1 or port B2, or not connect either port.

[0211] The excitation current generation unit AC can be used to generate a current with a constant magnitude, and this current is less than or equal to the human safety current and is harmless to the human body. When the excitation current generation unit AC is in the loop, the excitation current generation unit AC can output current through the positive electrode and adjust the magnitude of the output current based on the current flowing into the negative electrode, so as to maintain the stability of the current magnitude in the loop. Therefore, the excitation current generation unit AC can also judge whether the excitation current generation unit AC is in the loop based on whether current flows into the negative electrode, so as to judge whether the electrode is in good contact with the skin.

[0212] When all the electrodes in the monitoring circuit are in contact with the user's skin, that is, when electrode 1 is in contact with contact point 1, electrode 2 is in contact with contact point 2, electrode 3 is in contact with contact point 3, and electrode 4 is in contact with contact point 4, the monitoring circuit can also include the contact resistance generated by each electrode. These contact resistances can include the contact resistance R1 corresponding to electrode 1, the contact resistance R2 corresponding to electrode 2, the contact resistance R3 corresponding to electrode 3, and the contact resistance 4 corresponding to electrode 4. Moreover, between electrode 1 and electrode 3, between electrode 2 and electrode 4, between electrode 1 and electrode 2, and between electrode 3 and electrode 4 can be connected through the skin. The skin resistance between electrode 1 and electrode 3 can be called R 皮肤1 ; the skin resistance between electrode 2 and electrode 4 can be called R 皮肤2 . If contact point 1 and contact point 2 are respectively located at both ends of the thoracic tissue, then electrode 1 and electrode 2 can also be connected through the user's body. The resistance between electrode 1 and electrode 2 can be regarded as the body resistance R of the user 躯体 , at this time, the resistance between electrode 3 and electrode 4 can also be regarded as the body resistance R of the user 躯体 .

[0213] In addition, when the contact point 1 and the contact point 2 are respectively located at both ends of the thoracic tissue, and both the electrode 3 and the electrode 4 are in contact with the skin, the electrode 3 can be connected to the electrode 4 through the user's body. That is, the resistance between the electrode 3 and the electrode 4 can also be regarded as the body resistance R 躯体 . Therefore, as Figure 5E shown, the electrode 3 can be connected to the electrode 4 through the dotted line 1, the body resistance R 躯体 and the dotted line 2. It should be noted that the dotted lines (dotted line 1 and dotted line 2) here do not refer to the physical circuit connection lines, but are used to assist in explaining that the electrode 3 can be connected to the electrode 4 through the user's body. That is, the user's body can be equivalent to Figure 5E the dotted line 1, the body resistance R 躯体 and the dotted line 2 shown. Similarly, when the electrode 1 is connected to the electrode 2 through the user's body, the user's body can also be equivalent to Figure 5E the dotted line 3, the body resistance R 躯体 and the dotted line 4 shown. Similarly, when the electrode 1 is connected to the electrode 3 through the user's local skin, the skin between the electrode 1 and the electrode 3 can also be equivalent to Figure 5E the dotted line 5, R 皮肤1 and the dotted line 6 shown; when the electrode 2 is connected to the electrode 4 through the user's local skin, the skin between the electrode 2 and the electrode 4 can also be equivalent to Figure 5E the dotted line 7, R 皮肤2 and the dotted line 8 shown. It can be understood that when a circuit can be formed between two electrodes through the user's body or the user's skin, the dotted lines at both ends of the skin resistance or other resistances can be regarded as conductive, otherwise, the dotted lines can be regarded as disconnected (i.e., non-conductive).

[0214] When all the electrodes in the monitoring circuit are in contact with the user's skin, the analog switches S1 and S2 can be selected to connect to different ports, so as to form a circuit among different electrodes.

[0215] Figures 5F to 5H Shows the schematic diagram of the circuit connection when the analog switch connects to different ports when all the electrodes in the monitoring circuit are in contact with the user's skin.

[0216] Exemplarily, when all the electrodes in the monitoring circuit are in contact with the user's skin, when the analog switch S1 connects to the port A1 and the analog switch S2 connects to the port B2, a circuit can be formed between the electrode 1 and the electrode 3. Therefore,[[]] Figure 5E the dotted line 5 and the dotted line 6 shown can be regarded as conductive. At this time, the monitoring circuit can form a loop 1 as Figure 5F shown between the electrode 1 and the electrode 3.

[0217] As Figure 5FAs shown, loop 1 may include an excitation current generation unit AC, electrode 1, and electrode 3. Since electrode 1 and electrode 3 are in good contact with the user's skin, electrode 1 and electrode 3 can be connected through the skin resistance R 皮肤1 and loop 1 may also include the contact resistance R1 of electrode 1 and the contact resistance R3 of electrode 3. That is, the excitation current generation unit AC, the contact resistance R1, the contact resistance R3, and the skin resistance R 皮肤1 can be connected in series to form loop 1. In loop 1, the excitation current generation unit AC can generate current, and the excitation current generation unit AC can also determine the magnitude of the current in loop 1 and adjust the magnitude of the current generated by the excitation current generation unit AC in real time.

[0218] When the analog switch S1 is connected to port A1 and the analog switch S2 is connected to port B2, if the excitation current generation unit AC determines that there is current between electrode 1 and electrode 3 (or determines that the current between electrode 1 and electrode 3 is greater than or equal to the preset current threshold), it indicates that loop 1 can be formed in the monitoring circuit, that is, both electrode 1 and electrode 3 are in good contact with the user's skin; if the excitation current generation unit AC determines that there is no current between electrode 1 and electrode 3 (or determines that the current between electrode 1 and electrode 3 is less than the preset current threshold), it indicates that loop 1 cannot be formed in the monitoring circuit, that is, at least one of electrode 1 and electrode 3 is not in good contact with the user's skin.

[0219] Therefore, the monitoring circuit can determine whether there is an electrode with poor skin contact between electrode 1 and electrode 3 by controlling the analog switch S1 to connect to port A1 and the analog switch S2 to connect to port B2.

[0220] Exemplarily, when all electrodes in the monitoring circuit are in contact with the user's skin, when the analog switch S1 is connected to port A2 and the analog switch S2 is connected to port B1, a loop can be formed between electrode 2 and electrode 4. Therefore, Figure 5E the dotted lines 7 and 8 shown can be regarded as conductive. At this time, the monitoring circuit can form loop 2 as shown Figure 5F between electrode 2 and electrode 4.

[0221] As Figure 5G shown, loop 2 may include an excitation current generation unit AC, electrode 2, and electrode 4. Since electrode 2 and electrode 4 are in good contact with the user's skin, electrode 2 and electrode 4 can be connected through the skin resistance R 皮肤2 and loop 2 may also include the contact resistance R2 of electrode 2 and the contact resistance R4 of electrode 4. That is, the excitation current generation unit AC, the contact resistance R2, the contact resistance R4, and the skin resistance R 皮肤2They can be connected in series to form loop 2. In loop 2, the excitation current generating unit AC can generate current, and the excitation current generating unit AC can also determine the magnitude of the current in loop 2 and adjust the magnitude of the current generated by the excitation current generating unit AC in real time.

[0222] When the analog switch S1 is connected to port A2 and the analog switch S2 is connected to port B1, if the excitation current generating unit AC determines that there is a current between electrode 2 and electrode 4 (or determines that the current between electrode 2 and electrode 4 is greater than or equal to a preset current threshold), it indicates that loop 2 can be formed in the monitoring circuit, that is, both electrode 2 and electrode 4 are in good contact with the user's skin; if the excitation current generating unit AC determines that there is no current between electrode 2 and electrode 4 (or determines that the current between electrode 2 and electrode 4 is less than a preset current threshold), it indicates that loop 2 cannot be formed in the monitoring circuit, that is, at least one of electrode 2 and electrode 4 is in poor contact with the user's skin.

[0223] Therefore, the monitoring circuit can determine whether there is poor contact between the electrode 2 and the electrode 4 and the skin by controlling the analog switch S1 to connect to the port A2 and the analog switch S2 to connect to the port B1.

[0224] As another example, when all electrodes in the monitoring circuit are in contact with the user's skin, and contact point 1 and contact point 2 are located at two ends of the chest tissue, respectively, when analog switch S1 connects to port A1 and analog switch S2 connects to port B1 (or when analog switch S1 connects to port A2 and analog switch S2 connects to port B1), a loop can be formed between electrode 1 and electrode 2, and between electrode 3 and electrode 4. Therefore, Figure 5E The dashed lines 1, 2, 3 and 4 shown in FIG. 1 can all be regarded as conductive. Figure 5H As shown, the monitoring circuit can form a loop 3 between electrode 1 and electrode 2, and a loop 4 between electrode 2 and electrode 4.

[0225] like Figure 5H As shown, the loop 3 between the electrode 1 and the electrode 2 may include an excitation current generating unit AC, the electrode 1 and the electrode 2 , and the loop 4 between the electrode 3 and the electrode 4 may include the electrode 3 , the electrode 4 and a voltage measuring unit V.

[0226] In loop 3, since electrodes 1 and 2 are in good contact with the user's skin, and the line between contact point 1 and contact point 2 can cross the two ends of the user's heart, electrodes 1 and 2 can be connected through the body resistance R 躯体 The circuit 3 may also include the contact resistance R1 of the electrode 1 and the contact resistance R2 of the electrode 2. That is, the excitation current generating unit AC, the contact resistance R1, the contact resistance R2 and the body resistance R 躯体They can be connected in series to form Loop 3. In Loop 3, the excitation current generating unit AC can generate current, and the excitation current generating unit AC can also determine the magnitude of the current in Loop 3 and adjust the magnitude of the current generated by the excitation current generating unit AC in real time, so that the magnitude of the current flowing through the body resistance R 躯体 remains stable.

[0227] In Loop 4, since Electrode 3 and Electrode 4 are in good contact with the user's skin, and the distance between Electrode 1 and Electrode 3 is small, and the distance between Electrode 2 and Electrode 4 is small, therefore, Electrode 3 and Electrode 4 can also be connected through the body resistance R 躯体 Moreover, Loop 4 can also include the contact resistance R3 of Electrode 3 and the contact resistance R4 of Electrode 4. That is, the contact resistance R3, the voltage measurement unit V, the contact resistance R4, and the body resistance R 躯体 can be connected in series to form Loop 4. Since the body resistance R 躯体 is also a part of Loop 3, the current generated by the excitation current generating unit AC will flow through the body resistance R 躯体 , and a voltage will be formed across the body resistance R 躯体 . In Loop 4, the voltage measurement unit V can measure the voltage between Electrode 3 and Electrode 4, that is, the voltage across the body resistance R 躯体 .

[0228] Therefore, when the analog switch S1 is connected to port A1 and the analog switch S2 is connected to port B1, the monitoring circuit 3 can determine the current flowing through the body resistance R 躯体 through the excitation current generating unit AC, and can also determine the voltage across the body resistance R 躯体 through the voltage measurement unit V, so as to determine the user's cardiac impedance. Exemplarily, the cardiac impedance can be the ratio of the voltage across the body resistance R 躯体 to the current flowing through the body resistance R 躯体 .

[0229] It can be understood that Figures 5D to 5H this is just an example. In the embodiments of the present application, the monitoring circuit may also include more, fewer, or different circuit components than the above embodiments, or adopt a circuit structure different from the above embodiments, and the present application does not make any limitations here.

[0230] Next, the positional relationship between the contact points of Electrode 1 and Electrode 2 with the skin provided by the embodiments of the present application will be introduced.

[0231] Figure 6A shows a schematic diagram of the positional relationship of a human chest tissue provided by the embodiments of the present application.

[0232] As Figure 6AAs shown, the heart can be located within the thoracic tissue, and the cardiac impedance can be equivalent to the impedance of the thoracic tissue, which can also be referred to as the body impedance of the user. In the human body, above the thoracic tissue is the user's neck, below the thoracic tissue is the user's abdomen, to the left of the thoracic tissue is the user's left hand, and to the right of the thoracic tissue is the user's right hand. It should be noted that in the embodiments of the present application, above, below, to the left, and to the right of the thoracic tissue are determined based on the blood flow direction of the human body, rather than the actual spatial position of the human body parts. That is, the user's left hand is always to the left of the thoracic tissue; the user's right hand is always to the right of the thoracic tissue; the user's head is always above the thoracic tissue; the user's abdomen is always below the thoracic tissue.

[0233] In the embodiments of the present application, the contact point between electrode 1 and the skin can be referred to as contact point 1, and the contact point between electrode 2 and the skin can be referred to as contact point 2. When contact point 1 and contact point 2 are respectively located at both ends of the thoracic tissue (such as above and below, or left and right), the impedance between electrode 1 and electrode 2 can be considered as the cardiac impedance. Therefore, during the process of the electronic device 100 performing cardiac function monitoring, electrode 1 and electrode 2 need to meet the following monitoring conditions: electrode 1 and electrode 2 are respectively located at both ends of the thoracic tissue.

[0234] The following introduces the position distributions of various contact points provided by the embodiments of the present application in combination with specific scenarios.

[0235] In some application scenarios, the electronic device 100 can be the earphone 10. Figure 6B The schematic diagram shows the distribution of the contact points between the electrodes on the earphone 10 and the skin during the cardiac function monitoring process.

[0236] As Figure 6B shown, when the user performs cardiac function monitoring using the earphone 10 shown above, Figure 2A the user can wear the right earphone 12 on the right ear and attach the left earphone 11 to the abdomen, so that the electrodes (such as electrode 1 and electrode 3) on the left earphone 11 can contact the abdominal skin, and the electrodes (such as electrode 2 and electrode 4) on the right earphone 12 can contact the skin of the right ear part. In this case, the contact point 1 between the electrode 1 on the left earphone 11 and the skin is located on the abdomen, and the contact point 2 between the electrode 2 on the right earphone 12 and the skin is located on the right ear. Since the abdomen is below the thoracic tissue and the right ear is above the thoracic tissue, contact point 1 and contact point 2 are respectively located above and below the thoracic tissue, meeting the Figure 6A monitoring conditions in the embodiments shown. At this time, the impedance between electrode 1 and electrode 2 can be regarded as the cardiac impedance, and measuring the voltage and current between electrode 1 and electrode 2 can determine the cardiac impedance of the user.

[0237] It can be understood that Figure 6BThe illustrated embodiments are merely examples. In the embodiments of the present application, the user may also adopt the above-mentioned Figure 2B , Figure 2C to measure the cardiac function with the earphone 10 shown. Moreover, the user may also measure the cardiac function of the user through other measurement methods. For example, wear the left earphone 11 on the left ear, and the electrode on the right earphone 12 contacts the abdominal skin, or the left hand contacts the electrode of the left earphone 11 and the right hand contacts the electrode of the right earphone 12, etc. The present application does not make any limitations here.

[0238] In some application scenarios, the electronic device 100 may be a watch 20. Figure 6C shows a schematic diagram of the distribution of the contact points between the electrodes on the watch 20 and the skin during a cardiac function monitoring process.

[0239] As Figure 6C shown, when the user measures the cardiac function with the Figure 3A shown watch 20, the user may respectively contact the two ends of the watch band 22 with the user's chest and the user's abdomen, so that the electrodes at one end of the watch band 22 (such as electrode 1 and electrode 3) can contact the skin of the user's chest, and the electrodes at the other end of the watch band 22 (such as electrode 2 and electrode 4) can contact the skin of the user's abdomen. In this case, the contact point 1 of electrode 1 with the skin is located on the chest, and the contact point 2 of electrode 2 with the skin is located on the abdomen. Since the abdomen is below the thoracic tissue and the chest belongs to above the thoracic tissue, the contact point 1 and the contact point 2 are respectively above and below the thoracic tissue, meeting the Figure 6A monitoring conditions in the illustrated embodiments. At this time, the impedance between electrode 1 and electrode 2 can be regarded as the cardiac impedance, and measuring the voltage and current between electrode 1 and electrode 2 can determine the cardiac impedance of the user. It should be noted that in the Figure 6C shown scenario, the length of the watch band 22 should be at least able to span the upper and lower ends (or left and right ends) of the thoracic tissue, so as to ensure that electrode 1 and electrode 2 can detect the cardiac impedance of the user. In addition, on the premise of ensuring that the distance between electrode 1 and electrode 2 is greater than the two ends of the thoracic tissue, the distance between electrode 1 and electrode 2 should be small enough, so as to ensure that the contact point 1 and the contact point 2 are close enough to the heart, so as to obtain a more accurate measurement result. It can be understood that compared with the Figure 3A shown watch 20, the connection line between the left earphone 11 and the right earphone 12 in the above-mentioned embodiment is longer, and it is easier to ensure that electrode 1 and electrode 3 span the two ends of the thoracic tissue.

[0240] Figure 6D shows another schematic diagram of the distribution of the contact points between the electrodes on the watch 20 and the skin during a cardiac function monitoring process.

[0241] As Figure 6D shown, when the user adopts the Figure 3B andFigure 3C When the watch 20 shown measures heart function, the user can wear the watch 20 on the wrist (for example, the left wrist) so that the electrodes on the back of the movement 21 (such as electrode 1 and electrode 3) can contact the user's wrist. At the same time, the user can touch the electrodes on the button (such as electrode 2 and electrode 4) with the fingers of the other hand (that is, the right hand). In this case, the contact point 1 between electrode 1 and the skin is located on the user's left wrist, and the contact point 2 between electrode 2 and the user is located on the user's right finger. Since the left hand is on the left side of the thoracic tissue and the right hand is on the right side of the thoracic tissue, the contact points 1 and 2 are respectively located on the left and right sides of the thoracic tissue, meeting Figure 6A the monitoring conditions in the shown embodiment. At this time, the impedance between electrode 1 and electrode 2 can be regarded as the cardiac impedance, and measuring the voltage and current between electrode 1 and electrode 2 can determine the user's cardiac impedance.

[0242] It should be noted that the above Figures 3D to 3E The watch 20 in the shown embodiment can also measure the user's cardiac impedance in a similar manner to the Figure 6D shown embodiment. In this case, the wrist of the user wearing the watch 20 can contact one or more electrodes on the watch band 22, and the user's other hand (that is, the hand not wearing the watch 20) can contact the electrodes on the button. In this way, the contact points between electrode 1, electrode 2 and the user's skin are respectively located on the user's left and right hands. Therefore, the contact points 1 and 2 are respectively located on the left and right sides of the thoracic tissue, meeting Figure 6A the monitoring conditions in the shown embodiment. At this time, the impedance between electrode 1 and electrode 2 can be regarded as the cardiac impedance, and measuring the voltage and current between electrode 1 and electrode 2 can determine the user's cardiac impedance.

[0243] It can be understood that Figures 6C to 6D the shown embodiments are only two examples. In the embodiments of the present application, the user can also measure heart function in the manner shown in the above embodiments through wearable devices such as bracelets. The present application does not limit the specific form of the wearable device here. Moreover, the user can also measure the user's heart function through other measurement methods, such as touching the electrodes at both ends of the watch band 22 with both hands, etc. The present application does not limit this here.

[0244] In some application scenarios, the electronic device 100 can be a mobile phone 30, Figure 6E which shows a schematic diagram of the distribution of the contact points between the electrodes on the mobile phone 30 and the skin during a heart function monitoring process.

[0245] Exemplarily, as Figure 6E shown, when the user adopts Figure 4AWhen the mobile phone 30 shown measures cardiac function, the user can hold the mobile phone 30 with the left hand, so that the left hand touches one or more electrodes (such as electrode 1 and electrode 3). At the same time, the user can touch the right hand fingers to one or more other electrodes of the mobile phone 30 (such as electrode 2 and electrode 4). In this case, the contact point 1 between electrode 1 and the skin is on the left hand, and the contact point between electrode 2 and the skin is on the right hand. Since the left hand is on the left side of the thoracic tissue and the right hand is on the right side of the thoracic tissue, therefore, the contact point 1 and the contact point 2 are respectively on the left and right sides of the thoracic tissue, meeting Figure 6A the monitoring conditions in the illustrated embodiment. At this time, the impedance between electrode 1 and electrode 2 can be regarded as the cardiac impedance, and measuring the voltage and current between electrode 1 and electrode 2 can determine the cardiac impedance of the user.

[0246] It can be understood that Figure 6E the illustrated embodiment is only an example. In the embodiments of the present application, the user can also use an electronic device such as a tablet computer to measure cardiac function in the manner shown in the above embodiment, or use the mobile phone 30 shown above Figure 4B to measure cardiac function, and the present application does not make any limitations here.

[0247] In some application scenarios, the electronic device 100 can be Figure 2C the earphone 10 shown, and the electronic device 200 can be a mobile phone provided with electrodes (such as Figure 4A or Figure 4B the mobile phone 30 shown). Figure 6F shows a schematic diagram of the contact point distribution between the electrodes and the skin in the health monitoring system 1000 during a monitoring process.

[0248] As Figure 6F shown, the user can wear Figure 2C the earphone 10 shown. At the same time, the user can hold the mobile phone 30 with one hand. The earphone 10 is a wired earphone, and the other port of the connection line of the earphone 10 is connected to the mobile phone 30. When the user wears the left earphone 11 and the right earphone 12, the user can hold the mobile phone 30 with the left hand (or the right hand). In this case, the electrode on the user's right earphone 12 can touch the right ear, and the electrode on the mobile phone 30 can touch the user's left hand. Since the right ear is on the right side of the thoracic tissue and the left hand is on the left side of the thoracic tissue, at this time, the electrode on the right earphone 12 and the electrode on the mobile phone 30 are respectively on the left and right sides of the thoracic tissue, meeting Figure 6A the monitoring conditions in the illustrated embodiment. At this time, the impedance between the electrode on the right earphone 12 and the electrode on the mobile phone 30 can be regarded as the cardiac impedance, and measuring the voltage and current between these two electrodes can determine the cardiac impedance of the user.

[0249] It should be noted that in Figure 6FIn the application scenario shown, the electrodes on the earphone 10, the electrodes on the mobile phone 30, and the connecting line between the earphone 10 and the mobile phone 30 can be constructed into the monitoring circuit shown above Figure 5B or Figure 5D The other circuit components in the monitoring circuit can be located in the earphone 10 or the mobile phone 30, which is not limited in this application.

[0250] It can be understood that Figure 6F the embodiments shown are only exemplary illustrations that the user's cardiac impedance can be determined through multiple devices. In the embodiments of this application, the user can also use different wearing and holding methods from the above embodiments. For example, the user can wear the left earphone 11 and hold the mobile phone 30 with the right hand at the same time, and determine the user's cardiac impedance based on the electrodes on the left earphone 11 and the electrodes on the mobile phone 30, which is not limited in this application. The specific process of the earphone 10 and the mobile phone 30 executing the monitoring method provided in the embodiments of this application can refer to the relevant descriptions in the following Figure 12A shown embodiments and will not be elaborated here.

[0251] Next, the process of a monitoring method provided in the embodiments of this application will be introduced.

[0252] Figure 7 The figure shows a schematic flowchart of a monitoring method provided in the embodiments of this application.

[0253] As Figure 7 shown, the specific process of the electronic device 100 executing the monitoring method may include the following steps:

[0254] S701, the electronic device 100 enables cardiac function monitoring.

[0255] In some embodiments, the electronic device 100 can receive and respond to the operation 1 of the user on the electronic device 100 to enable cardiac function monitoring. The operation 1 can be a preset operation, and when the device form of the electronic device 100 is different, the operation 1 can also be different. Exemplarily, if the electronic device 100 is an earphone (such as the earphone 10), the operation 1 can be a double-click operation of the user on the earphone 10 (the left earphone 11 or the right earphone 12), or a pressing operation on a specified button on the earphone 10, etc. If the electronic device 100 is a wearable device such as the watch 20, the operation 1 can be an operation of the user on the button on the watch 20, or an operation on a specified control (such as the cardiac function measurement control in the health application, etc.) displayed on the display screen of the watch 20, etc. If the electronic device 100 is a mobile phone 30, the operation 1 can also be an operation on a specified control (such as the cardiac function measurement control in the health application, etc.) displayed on the display screen 31 of the mobile phone 30, etc.

[0256] In some other embodiments, the electronic device 100 can also receive and respond to the startup instruction sent by the electronic device 200 to turn on the heart function monitoring. It should be noted that in this case, the electronic device 100 can establish a communication connection with the electronic device 200, and this communication connection can be a wired communication connection or a wireless communication connection. Exemplarily, if the electronic device 100 is the earphone 10 in the above Figure 2A or Figure 2B shown embodiment, the communication connection between the electronic device 100 and the electronic device 200 can be a wireless communication connection such as a Bluetooth connection or a XingFlash connection; if the electronic device 100 is the earphone 10 shown in the above Figure 2C the communication connection between the electronic device 100 and the electronic device 200 can be a wired connection; if the electronic device 100 is the mobile phone 30 in the above Figure 4B shown embodiment, the communication connection between the electronic device 100 and the electronic device 200 can be a Bluetooth connection or a local area network connection, etc. It can be understood that the embodiments here are just some examples. In the embodiments of the present application, the communication connection between the electronic device 100 and the electronic device 200 can also be a communication connection different from the above embodiments, and the present application does not make any limitation here.

[0257] In some embodiments, after receiving the operation 1 of the user or the startup instruction sent by the electronic device 200, the electronic device 100 can output an operation prompt, and the operation prompt is used to prompt the user about the positional relationship between the electrodes on the electronic device 100 and the user during the heart function monitoring. The electronic device 100 can use any one or more of text, pictures, animations, voices, indicator light flashes, vibrations, etc. to prompt the user about the positional relationship between the electrodes and the user, so that the electronic device 100 can determine the cardiac impedance of the user.

[0258] Exemplarily, if the electronic device 100 is the Figure 2A shown earphone 10, the operation prompt can be a voice broadcast: "Please wear one earphone and stick the other earphone on the abdominal skin"; if the electronic device 100 is the Figure 3B and Figure 3C shown watch 20, the operation prompt can be the text "Please wear the watch and place the fingers of the other hand on the electrodes" displayed on the display screen, etc. It can be understood that the multiple embodiments here are only exemplary explanations that there can be multiple ways to output the operation prompt. In the embodiments of the present application, the output method of the operation prompt can also be a method different from the above embodiments, and the specific content of the operation prompt can also be different from the above embodiments, and the present application does not make any limitation here.

[0259] In other embodiments, the electronic device 100 may also start cardiac function monitoring when it detects that the monitoring conditions are met. Optionally, when it detects that the monitoring conditions are met, an operation prompt may be output, and the operation prompt is used to remind the user of the positional relationship between the electrodes on the electronic device 100 and the user during cardiac function monitoring. The monitoring conditions may include, but are not limited to, any one or more of the following: detecting that the user's physiological state is abnormal (for example, the heart rate does not belong to the preset heart rate range, etc.), detecting that the user's psychological state is abnormal (for example, frightened), detecting that the user is in motion, detecting that the user has insomnia, detecting that the user's body posture is abnormal (for example, falling down), detecting that the user's sports equipment is abnormal, detecting that the user's position is within a preset area (for example, the user is at a high altitude), etc.

[0260] The following describes a specific method in which the electronic device 100 determines whether the monitoring condition is met.

[0261] In some embodiments, the electronic device 100 can obtain user information and determine whether the electronic device 100 meets the monitoring conditions based on the user information. User information may include, but is not limited to, any one or more of the following: physiological information, psychological information, motion information, sports equipment information, posture information, location information, and interaction information. Among them, physiological information can be used to characterize the user's physiological state, and the physiological information may include, but is not limited to, any one or more of the following: blood oxygen concentration, heart rate, blood sugar, body temperature, blood pressure, disease information, etc.; psychological information can be used to characterize the user's psychological state, and the psychological information may include, but is not limited to, any one or more of the following: stress value, low mood, stable mood, high mood, being frightened, etc.; motion information can be used to characterize the user's motion state, and the motion information may include, but is not limited to, any one or more of the following: swimming, diving, cycling, running, climbing, skipping rope, yoga, etc.; sports equipment information can be used to characterize the state of sports equipment, and the sports equipment information may include, but is not limited to, any one or more of the following: the remaining oxygen in the oxygen cylinder, the weight of the smart backpack , the resistance of the bicycle, etc.; the posture information can be used to characterize the user's body posture, and the posture information may include but is not limited to any one or more of the following: falling, stepping on empty air, standing still, etc.; the location information can be used to characterize the user's location, and the location information may include but is not limited to any one or more of the following: the user's geographic location, the latitude and longitude information of the user's location, the altitude information of the user's location, the depth information of the user's location, etc.; the interaction information may include the interaction operations between the user and the electronic device 100 (or electronic device 200), such as receiving the user's operation to turn on monitoring, etc. The interaction information may also include the communication interaction between the electronic device 100 and the electronic device 200, such as the start-up instruction sent by the electronic device 200 to the electronic device 100, etc.

[0262] It should be noted that in the embodiments of the present application, the ways for the electronic device 100 to obtain user information may include but are not limited to the following: the electronic device 100 detects user information, the electronic device 100 receives the user information sent by the electronic device 200, and the electronic device 100 receives and responds to the operation of the user entering user information (such as disease information) to obtain user information.

[0263] The following introduces some ways for the electronic device 100 provided in the embodiments of the present application to detect user information.

[0264] Exemplarily, the electronic device 100 can detect the user's motion information and posture information through devices such as a gyroscope sensor (also known as a gyroscope) and an acceleration sensor; the electronic device 100 can detect the user's physiological information such as heart rate, blood oxygen concentration, and blood pressure through devices such as a photoplethysmography (PPG) module; the electronic device 100 can also collect the user's facial expressions through a camera and determine the user's emotional state through algorithm models such as image analysis and facial expression analysis; the electronic device 100 can also determine the user's psychological information such as stress value based on physiological information; the electronic device 100 can also detect the user's interaction information through a touch sensor; the electronic device 100 can detect the user's location information through a location sensor (such as a global positioning chip, etc.); the electronic device 100 can also detect the air pressure of the environment where the user is located based on a barometric pressure sensor and determine location information such as the altitude of the location where the user is located based on the air pressure value, and so on.

[0265] It can be understood that the embodiments here are just some examples. In the embodiments of the present application, the electronic device 100 may include more, fewer, or different devices than those in the above embodiments. Moreover, the electronic device 100 may also collect user information through sensors or other devices different from those in the above embodiments, and the present application does not make any limitations here.

[0266] The following introduces some ways for the electronic device 100 provided in the embodiments of the present application to determine whether the monitoring conditions are met based on user information.

[0267] Again exemplarily, the electronic device 100 can determine whether the physiological information meets any of the following: the heart rate does not belong to the preset heart rate range, the blood pressure does not belong to the preset blood pressure range, the blood oxygen concentration does not belong to the preset blood oxygen concentration range, the body temperature does not belong to the preset body temperature range, etc.; if the physiological information meets any of the above, the electronic device 100 can determine that the user's physiological state is abnormal, that is, it is determined that the monitoring conditions are met.

[0268] Exemplarily, the electronic device 100 may determine whether the user has insomnia based on motion information, posture information, and a preset sleep period (such as 23:00-06:00). Alternatively, the electronic device 100 may determine whether the user has insomnia based on the user's interaction information during the sleep period. If the user has insomnia, the electronic device 100 may determine that the monitoring condition is met.

[0269] Exemplarily, the electronic device 100 may determine whether the user's motion state meets any of the following based on motion information: diving state, mountain climbing state, cycling state, yoga state, swimming state, running state, etc.; if the motion state meets any of the above, the electronic device 100 may determine that the monitoring condition is met.

[0270] Exemplarily, the electronic device 100 may determine whether the psychological information meets any of the following: the user is frightened, the user is in a low mood, the user is in a high mood, etc.; if the psychological information meets any of the above, the electronic device 100 may determine that the user's psychological state is abnormal, that is, determine that the monitoring condition is met.

[0271] Exemplarily, the electronic device 100 may determine whether any of the following is met based on location information: the user is in a high altitude area, the user is in a deep water area, etc.; if the location information meets any of the above, the electronic device 100 may determine that the user's location is within the preset area range, that is, determine that the monitoring condition is met.

[0272] Exemplarily, the electronic device 100 may determine whether the posture information meets any of the following: the user falls, the user steps on empty, etc.; if the posture information meets any of the above, the electronic device 100 may determine that the user's body posture is abnormal, that is, meet the monitoring condition.

[0273] Exemplarily, the electronic device 100 may determine whether the sports equipment information meets any of the following: the oxygen remaining in the oxygen cylinder is lower than the preset oxygen amount, the resistance of the bicycle during travel is greater than the preset resistance, the weight of the smart backpack is greater than the preset weight, etc.; if the sports equipment information meets any of the above, the electronic device 100 may determine that the user's sports equipment is abnormal, that is, meet the monitoring condition.

[0274] It can be understood that the above embodiments only exemplarily illustrate various ways to determine whether the monitoring condition is met based on user information. In the embodiments of the present application, the electronic device 100 may also determine whether the monitoring condition is met based on various types of user information. The electronic device 100 may also determine whether the monitoring condition is met based on other information in the user information, and the monitoring condition may also include more, less, or different conditions than the above embodiments. The present application does not make any limitations here.

[0275] In some application scenarios, if the electronic device 100 is a headset 10 and the headset 10 is playing audio before the heart function monitoring is turned on, then after the heart function monitoring is turned on, the headset 10 can pause the playback of the audio.

[0276] S702. The electronic device 100 outputs a prompt 1, and the prompt 1 is used to prompt the user to start monitoring the heart function.

[0277] Step S702 is an optional step.

[0278] The electronic device 100 can output the prompt 1 in any one or more of the ways such as display on a display screen, voice, vibration, and indicator light flashing.

[0279] Exemplarily, if the electronic device 100 is a headset 10, the headset 10 can output the prompt 1 in a voice manner, such as playing the voice "The heart function monitoring starts. Please ensure good contact between the electrode and the skin!"; Again exemplarily, if the electronic device 100 is a watch 20, the watch 20 can output the prompt 1 by displaying on a display screen, such as displaying the text "The heart function monitoring starts!" on the display screen; Again exemplarily, if the electronic device 100 is a mobile phone 30, the mobile phone 30 can output the prompt 1 in two ways of display on a display screen and vibration. For example, while displaying the text "The heart function monitoring starts!", it vibrates through a motor to remind the user to view the prompt 1. It can be understood that multiple embodiments here only exemplarily illustrate that there can be multiple ways to output the prompt 1. In the embodiments of the present application, the way to output the prompt 1 can also be a way different from the above embodiments, and the specific content of the prompt 1 can also be different from the above embodiments. The present application does not make any limitations here.

[0280] S703. The electronic device 100 determines whether the electrode in the monitoring circuit is in good contact with the skin.

[0281] Steps S703 to S704 are optional steps.

[0282] In some embodiments, the monitoring circuit in the electronic device 100 can be the monitoring circuit shown above Figure 5B In this case, after the heart function monitoring is turned on, the electronic device 100 can control the analog switch S0 in the monitoring circuit to close and determine whether there is current in the current monitoring circuit. If it is determined that there is current in the monitoring circuit, it is determined that the electrode is in good contact with the skin. At this time, the electronic device 100 can execute the following step S705; if it is determined that there is no current in the monitoring circuit, it is determined that the electrode is in poor contact with the skin. At this time, the electronic device 100 can execute the following step S704.

[0283] In some embodiments, the electronic device 100 may also preset a current threshold, and determine whether the electrode is in good contact with the skin based on whether the current magnitude in the monitoring circuit reaches the current threshold. This application does not make any limitations here.

[0284] In some other embodiments, the monitoring circuit in the electronic device 100 may also be the above-mentioned Figures 5D to 5E shown monitoring circuit. In this case, the specific process for the electronic device 100 to determine whether the electrode is in good contact with the skin may include the following steps:

[0285] 1. The electronic device 100 controls the analog switch 1 to connect to port A1.

[0286] 2. The electronic device 100 controls the analog switch 2 to connect to port B2.

[0287] After the electronic device 100 starts the heart function monitoring, it can send instruction 1 to the analog switch 1, and this instruction 1 is used to instruct the analog switch 1 to connect to port A1. And, the electronic device 100 can also send instruction 2 to the analog switch 2, and instruction 2 is used to instruct the analog switch 2 to connect to port B2.

[0288] 3. The electronic device 100 determines whether there is a current between electrode 1 and electrode 3.

[0289] When the analog switch 1 is connected to port A1 and the analog switch 2 is connected to port B2, if electrode 1 and electrode 3 are in good contact with the user's skin, the monitoring circuit can form the above-mentioned Figure 5F shown loop between electrode 1 and electrode 3. When a loop is formed between electrode 1 and electrode 3, the electronic device 100 can determine that there is a current between electrode 1 and electrode 3. When a loop is not formed between electrode 1 and electrode 3, there is no current between electrode 1 and electrode 3.

[0290] Therefore, the electronic device 100 can determine whether electrode 1 and electrode 3 are in good contact with the skin based on whether there is a current between electrode 1 and electrode 3 (or based on whether the current between electrode 1 and electrode 3 is greater than a preset threshold).

[0291] If the electronic device 100 determines that there is a current between electrode 1 and electrode 3, the electronic device 100 can execute the following step 5 to determine that both electrode 1 and electrode 3 are in good contact with the skin.

[0292] If the electronic device 100 determines that there is no current between electrode 1 and electrode 3, the electronic device 100 can execute the following step 4 to determine that at least one of electrode 1 and electrode 3 is in poor contact with the user's skin.

[0293] 4. At least one of electrode 1 and electrode 3 is in poor contact with the skin.

[0294] 5. Both electrode 1 and electrode 3 are in good contact with the skin.

[0295] When it is determined that both electrode 1 and electrode 3 are in good contact with the skin, the electronic device 100 can execute the following step 6.

[0296] 6. The electronic device 100 controls the analog switch 1 to connect to port A2.

[0297] 7. The electronic device 100 controls the analog switch 2 to connect to port B1.

[0298] After the electronic device 100 determines that electrode 1 and electrode 3 are in good contact with the skin, it can send instruction 3 to the analog switch 1. This instruction 3 is used to indicate that the analog switch 1 connects to port A2. At the same time, the electronic device 100 can also send instruction 4 to the analog switch 2. Instruction 4 is used to indicate that the analog switch 2 connects to port B1.

[0299] 8. The electronic device 100 determines whether there is a current between electrode 2 and electrode 4.

[0300] When the analog switch 1 connects to port A2 and the analog switch 2 connects to port B1, if electrode 2 and electrode 4 are in good contact with the user's skin, the monitoring circuit can form the loop shown above between electrode 2 and electrode 4. Figure 5G When a loop is formed between electrode 2 and electrode 4, the electronic device 100 can determine that there is a current between electrode 2 and electrode 4. When no loop is formed between electrode 2 and electrode 4, there is no current between electrode 2 and electrode 4.

[0301] Therefore, the electronic device 100 can determine whether electrode 2 and electrode 4 are in good contact with the skin based on whether there is a current between electrode 2 and electrode 4 (or based on whether the current between electrode 2 and electrode 4 is greater than a preset threshold).

[0302] If the electronic device 100 determines that there is a current between electrode 2 and electrode 4, the electronic device 100 can execute the following step 10 to determine that both electrode 2 and electrode 4 are in good contact with the skin.

[0303] If the electronic device 100 determines that there is no current between electrode 2 and electrode 4, the electronic device 100 can execute the following step 9 to determine that at least one of electrode 2 and electrode 4 is in poor contact with the user's skin.

[0304] 9. At least one of electrode 2 and electrode 4 is in poor contact with the skin.

[0305] 10. Both electrode 2 and electrode 4 are in good contact with the skin.

[0306] It can be understood that the above two embodiments only exemplarily introduce two ways to determine whether the electrode is in good contact with the skin. In the embodiments of the present application, the monitoring circuit can also adopt a circuit structure or circuit components different from those in the above embodiments, and the determination method of whether the electrode is in good contact with the skin can also be changed accordingly according to the change of the monitoring circuit. The present application does not make any limitations here.

[0307] When it is determined that there is poor electrode contact, the electronic device 100 can perform the following step S704.

[0308] When it is determined that all electrodes are in good contact, the electronic device 100 can perform the following step S705.

[0309] S704, the electronic device 100 outputs a prompt 2, and the prompt 2 is used to prompt the user that the electrode is not in good contact with the skin.

[0310] If the electronic device 100 determines that there is at least one electrode not in good contact with the skin, the electronic device 100 can output a prompt 2, and the prompt 2 can be used to prompt the user that the electrode in the monitoring circuit is not in good contact with the skin.

[0311] In some embodiments, the prompt 2 can also prompt the user about the positional relationship between the electrode not in good contact with the skin and the electronic device 100. For example, if the electronic device 100 determines that there is a poorly contacting electrode among electrode 1 and electrode 3, and the electronic device 100 is the Figure 2A headphone 10 shown above, the prompt 2 can be "The left headphone is not in good contact with the skin. Please adjust the position of the left headphone"; for another example, if the electronic device 100 determines that there is a poorly contacting electrode among electrode 2 and electrode 4, and the electronic device 100 is the Figures 3B to 3C watch 20 shown above, the prompt 2 can be "The finger is not in good contact with the electrode. Please adjust the position of the finger", etc.

[0312] The electronic device 100 can also output the prompt 2 in any one or more of the ways such as display on the display screen, voice, vibration, and indicator light flashing.

[0313] S705, the electronic device 100 determines a cardiac impedance curve through the monitoring circuit, and the cardiac impedance curve is used to characterize the relationship between the user's cardiac impedance and time.

[0314] In some embodiments, after the electronic device 100 turns on the cardiac function monitoring, it can determine the user's cardiac impedance curve through the monitoring circuit.

[0315] In other embodiments, the electronic device 100 can also, after performing the above step S703 and then determining that all electrodes in the monitoring circuit are in good contact with the skin, determine the user's cardiac impedance curve through the monitoring circuit.

[0316] Taking the monitoring circuit as the monitoring circuit in the above Figure 5B illustrated embodiment as an example, when all electrodes in the monitoring circuit are in good contact with the skin, the electronic device 100 can control the analog switch S0 to close, obtain a current curve through the excitation current generation unit, where the current curve is used to characterize the relationship curve between the current flowing through the user's body and time, and obtain a voltage curve through the voltage measurement unit, where the voltage curve is used to characterize the relationship curve between the voltage across the user's body and time, and determine the user's cardiac impedance curve based on the current curve and the voltage curve. Among them, the user's cardiac impedance is equal to the ratio of the voltage across the user's body to the current flowing through the user's body.

[0317] Taking the monitoring circuit as the monitoring circuit in the above Figures 5D to 5E illustrated embodiment as an example, when all electrodes in the monitoring circuit are in good contact with the skin, the electronic device 100 can control the analog switch S1 to connect to port A1, and at the same time, control the analog switch S2 to connect to port B1. At this time, the monitoring circuit can form a loop between electrode 1 and electrode 2, measure the current flowing through the user's body, and obtain a current curve. At the same time, the monitoring circuit can also form a loop between electrode 3 and electrode 4, measure the voltage across the user's body, and obtain a voltage curve. Then, the electronic device 100 can determine the current curve and the voltage curve based on the monitoring circuit, and determine the user's cardiac impedance curve based on the current curve and the voltage curve.

[0318] It can be understood that the above embodiments are only examples. In the embodiments of the present application, the monitoring circuit can also adopt a monitoring circuit different from the above Figure 5B 、 Figures 5D to 5E illustrated embodiment, and the present application does not make any limitations here.

[0319] S706, the electronic device 100 determines a cardiac function index based on the cardiac impedance curve.

[0320] The cardiac impedance curve can be used to determine cardiac function indexes, and the cardiac function indexes can include but are not limited to any one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction.

[0321] The specific process for the electronic device 100 to determine the cardiac output and the stroke volume based on the cardiac impedance curve can refer to the following Figure 8AFor the relevant descriptions in the embodiments shown, they will not be elaborated here for the time being. In addition, since the ejection fraction refers to the ratio of the stroke volume to the total volume of blood in the heart, the ejection fraction can be obtained based on the stroke volume and the total volume of blood in the heart. In some embodiments, the total volume of blood in the heart can be obtained through an estimation algorithm built into the electronic device 100. In other embodiments, the total volume of blood in the heart can also be a preset value, which can be estimated through algorithms such as deep learning based on the data of the total volume of blood in the heart of multiple testers.

[0322] S707, the electronic device 100 outputs the cardiac function index.

[0323] In some embodiments, the electronic device 100 can output the cardiac function index in one or more ways such as display on a display screen, voice, vibration, and indicator light flashing. Exemplarily, when the electronic device 100 outputs the cardiac function index by means of display on a display screen, the interface displayed by the electronic device 100 can refer to the relevant descriptions in the following Figures 9A to 9C 、 Figures 10A to 10C shown embodiments.

[0324] In other embodiments, the electronic device 100 outputs the cardiac function index, which can also mean that the electronic device 100 sends an output instruction 1 to the electronic device 200. The output instruction 1 can include the cardiac function index, and the output instruction 1 can be used to instruct the electronic device 200 to output the cardiac function index.

[0325] In some embodiments, if the electronic device 100 is the earphone 10, before the electronic device 100 outputs the cardiac function index, it can determine the output mode of the cardiac function index based on factors such as whether the user is wearing it and whether the electronic device 100 is connected to the electronic device 200. The specific judgment process can refer to the relevant descriptions in the following Figure 11 shown embodiments, which will not be elaborated here for the time being.

[0326] In some embodiments, the electronic device 100 can store the value ranges of different cardiac function indexes. Exemplarily, Table 1 shows the value ranges of the cardiac function indexes stored by the electronic device 100 provided in the embodiments of the present application.

[0327] Table 1

[0328] Cardiac function index Value range Cardiac output 4.5 - 6 liters (L) Stroke volume 60 - 80 milliliters (mL) Heart rate 60 - 100 beats per minute (min)

[0329] As shown in Table 1, the electronic device 100 can store the value ranges of multiple cardiac function indexes. For example, the value range of the cardiac output can be 4.5 - 6 liters, the value range of the stroke volume can be 60 - 80 milliliters, and the value range of the heart rate can be 60 - 100 beats per minute.

[0330] It can be understood that the embodiments shown in Table 1 are just examples. In the embodiments of the present application, the cardiac function indicators may also include more, fewer, or different cardiac function indicators than those described above, and the value ranges of the cardiac function indicators may also be different from those in the above embodiments. The present application does not make any limitations here.

[0331] In some embodiments, after determining the cardiac function indicators, the electronic device 100 may determine the determination result of each cardiac function indicator based on the relationship between the actual value of the cardiac function indicator and the preset value range. For example, the determination result of cardiac output, the determination result of stroke volume, etc. The determination result may include two types: normal and abnormal. Optionally, when the determination result is abnormal, the determination result may be further divided into multiple situations, such as on the high side, on the low side, too high, too low, etc.

[0332] Exemplarily, if the actual value of the cardiac output is 7 liters, and the value range of the cardiac output stored in the electronic device 100 is 4.5 - 6 liters, then the electronic device 100 may determine that the user's cardiac output is on the high side; if the actual value of the stroke volume is 80 milliliters, and the value range of the stroke volume stored in the electronic device 100 is 60 - 80 milliliters, then the electronic device 100 may determine that the user's stroke volume is normal. It can be understood that the embodiments here are just two examples. In the embodiments of the present application, the actual value of the cardiac function indicator and the preset value range may also be different from those in the above embodiments. The present application does not make any limitations here.

[0333] After determining the determination result of each cardiac function indicator, the electronic device 100 may output the determination result of each cardiac function indicator while outputting the cardiac function indicator.

[0334] In some embodiments, the electronic device 100 may also determine the comprehensive determination result of the user's cardiac function based on the relationship between the actual value of the cardiac function indicator and the preset value range. The comprehensive determination result is used to indicate the user's cardiac function status, such as whether the user's cardiac function is normal, etc. In other embodiments, the electronic device 100 may also determine the comprehensive determination result of the user's cardiac function based on the determination result of each cardiac function indicator. The comprehensive determination result may include normal and abnormal. Optionally, the abnormal may also include, but is not limited to, any one or more of the following: sub - health, disease risk, high - risk, etc. Exemplarily, if the determination result of each cardiac function indicator of the user is normal, then the comprehensive determination result may be normal; if there is at least one determination result of the cardiac function indicator of the user that is abnormal, then the comprehensive determination result may be abnormal.

[0335] After determining the comprehensive determination result, the electronic device 100 may output the comprehensive determination result while outputting the cardiac function indicator.

[0336] In some embodiments, the electronic device 100 may store the value ranges of cardiac function indicators in different states. The user's state may include a resting state and an exercise state. Optionally, it may further include, but is not limited to, any one or more of the following: sleep state, high altitude state, fright state, hypoxia state, diving state, meditation state, etc. The electronic device 100 may determine the user's state based on user information. The specific content and acquisition method of the user information may refer to the relevant description in step S701 above, which will not be elaborated here.

[0337] Exemplarily, Table 2 shows the value ranges of cardiac function indicators stored by the electronic device 100 provided in the embodiments of the present application in different states.

[0338] Table 2

[0339] Cardiac function index Value range at rest Value range during exercise Cardiac output 4.5 - 6 liters (L) 9 - 18 liters Stroke volume 60 - 80 milliliters (mL) 90 - 120 milliliters Heart rate 60 - 100 beats per minute (min) 100 - 150 beats per minute

[0340] As shown in Table 2, the electronic device 100 may store the value ranges of multiple cardiac function indicators in different states. For example, in the resting state, the value range of cardiac output may be 4.5 - 6 liters, the value range of stroke volume may be 60 - 80 milliliters, and the value range of heart rate may be 60 - 100 beats per minute; in the exercise state, the value range of cardiac output may be 9 - 18 liters, the value range of stroke volume may be 90 - 120 milliliters, and the value range of heart rate may be 100 - 150 beats per minute.

[0341] It can be understood that the embodiment shown in Table 2 is only an example. In the embodiments of the present application, the electronic device 100 may also store more, fewer, or different user states and cardiac function indicators than those described above, and the value ranges of the cardiac function indicators may also be different from those in the above embodiments. The present application does not make any limitations here.

[0342] In this case, after the electronic device 100 turns on cardiac function monitoring (i.e., after step S701), it may determine the user's state. For example, it may determine whether it is in an exercise state based on devices such as an accelerometer and a gyroscope, or determine whether the user is in a sleep state based on a sleep monitoring module, or determine the user's current state based on the user's operation of setting the state. The present application does not limit the specific manner in which the electronic device 100 determines the user's state.

[0343] After determining the current user state and determining the user's cardiac function indicators, the electronic device 100 may determine the determination results of each cardiac function indicator and / or the comprehensive determination result based on the relationship between the actual value of the cardiac function indicator and the value range of the cardiac function indicator in the current user state. After that, the electronic device 100 may output the determination results of each cardiac function indicator and / or the comprehensive determination result while outputting the cardiac function indicators.

[0344] In some other embodiments, while outputting the cardiac function indexes, the electronic device 100 may also output a status prompt, which is used to prompt the user's current status and health suggestions in the current status. Among them, the user status may be determined based on user information. Exemplarily, if the electronic device 100 determines that the user is in a high altitude state based on the user's location information, the status prompt may be "You are currently in a high altitude area. It is recommended to reduce exercise"; again exemplarily, if the electronic device 100 determines that the user is in a sub-healthy state based on the user's physiological information, the status prompt may be "Your current physical condition is not good. It is recommended that you avoid high-intensity exercise", etc. It can be understood that the embodiments here are only some examples. In the embodiments of the present application, the user status may also include more states than the above embodiments, or different states from the above embodiments, and the status prompt may include more, fewer or different status prompts from the above embodiments. The present application does not make any limitations here.

[0345] By using the monitoring method provided in the embodiments of the present application, the cardiac function of the user can be monitored at any time in the user's daily life, and cardiac function indexes such as the user's cardiac output and stroke volume can be obtained in real time.

[0346] In some embodiments, the electronic device 100 may also send the cardiac impedance curve to the electronic device 200, and the electronic device 200 determines the cardiac function indexes based on the cardiac impedance curve. After determining the cardiac function indexes, the electronic device 200 may output the cardiac function indexes. In some other embodiments, after determining the cardiac function indexes, the electronic device 200 may also send an output instruction 2 to the electronic device 100. The output instruction 2 may include the cardiac function indexes. The output instruction 2 can be used to instruct the electronic device 100 to output the cardiac function indexes. Optionally, the electronic device 200 may also determine a determination result based on the cardiac impedance curve. The specific content of the determination result may refer to the relevant description in step S707 shown above. Figure 7 In this case, the electronic device 200 may also output the determination result, or the output instruction 2 may also include the determination result.

[0347] In this way, when the computing power of the electronic device 100 is limited, the electronic device 100 may determine the cardiac impedance curve, and the electronic device 200 calculates the cardiac function indexes.

[0348] It can be understood that the embodiments here are only exemplary descriptions. Figure 7 Some steps in the shown method flow may be executed by the electronic device 200. In the embodiments of the present application, the electronic device 200 may also execute more, fewer or different steps than the above embodiments. The present application does not make any limitations here.

[0349] In some embodiments, the electronic device 100 can also determine a current curve and a voltage curve, and send the current curve and the voltage curve to the electronic device 200. The electronic device 200 determines a cardiac impedance curve based on the current curve and the voltage curve, and determines a cardiac function index based on the cardiac impedance curve. Among them, the current curve represents the relationship between the current flowing through the user's heart and time, and the voltage curve represents the relationship between the voltage across the user's heart and time.

[0350] The following introduces a specific process for determining a cardiac function index based on a cardiac impedance curve provided by an embodiment of the present application.

[0351] Figure 8A FIG. shows a schematic flow chart of a process for determining a cardiac function index based on a cardiac impedance curve provided by an embodiment of the present application.

[0352] As Figure 8A shown, the specific process for the electronic device 100 to determine the cardiac function index based on the cardiac impedance curve may include the following steps:

[0353] S801, the electronic device 100 obtains the characteristic points of the cardiac impedance curve.

[0354] The characteristic points of the cardiac impedance curve may include peak points and valley points. Among them, the peak point is the local highest point of the curve, and the valley point is the local lowest point of the curve. The peak points and valley points of the cardiac impedance curve can characterize the systolic period, diastolic period, and pumping moment of the heart. When the heart performs periodic activities of contraction and relaxation, the blood flow in the thoracic tissue also changes periodically with the contraction and relaxation of the heart, which causes the impedance of the thoracic tissue to change periodically. When the heart contracts, blood is ejected into the aorta, expanding the aortic lumen, increasing the cross-sectional area of the aortic lumen, and increasing the blood volume in the aortic lumen. Since blood is a good conductor, the resistance of the thoracic tissue decreases and the cardiac impedance decreases; when the heart relaxes, blood returns to the heart, the aortic lumen retracts, the cross-sectional area of the aortic lumen decreases, the blood volume decreases, the resistance of the thoracic tissue increases, and the cardiac impedance increases. Therefore, when the heart contracts, the cardiac impedance decreases, and when the heart relaxes, the cardiac impedance increases.

[0355] According to the above analysis, from one peak point to the next trough point of the cardiac impedance curve, the user's cardiac impedance gradually decreases, and the heart completes one contraction; from one trough point to the next peak point of the cardiac impedance curve, the user's cardiac impedance gradually increases, and the heart completes one relaxation. Therefore, the electronic device 100 can determine the systolic phase, diastolic phase, and cardiac pumping moment of the user's heart based on the moments corresponding to the peak points and trough points in the cardiac impedance curve. Among them, the cardiac pumping moment is the moment when the heart begins to contract at the end of the diastolic phase. In some embodiments, parameters such as the systolic phase, diastolic phase, and cardiac pumping moment of the heart can be used to calculate the user's heart rate, and can also be used to calculate cardiac output and stroke volume.

[0356] Exemplarily, Figure 8B FIG. 5 shows a schematic diagram of a cardiac impedance curve in a two-dimensional coordinate system provided by an embodiment of the present application.

[0357] As Figure 8B shown, the two-dimensional coordinate system may include a horizontal axis and a vertical axis. The horizontal axis may represent time, and the vertical axis may represent the magnitude of cardiac impedance. The cardiac impedance curve may be curve Q in this two-dimensional coordinate system. In curve Q, there may be multiple peak points, such as peak point P1 and peak point P2. Curve Q may also include multiple trough points, such as trough point G1 and trough point G2. Among them, the two peak points adjacent to trough point G1 are peak point P1 and peak point P2, and the two trough points adjacent to peak point P2 are trough point G1 and trough point G2. In addition, the coordinates of the above-mentioned multiple feature points in this two-dimensional coordinate system are successively peak point P1(x1, y1), trough point G1(x2, y2), peak point P2(x3, y3), trough point G2(x4, y4), and x1 < x2 < x3 < x4.

[0358] When the cardiac impedance curve is Figure 8B the curve Q shown, the systolic phase of the user's heart may be the time difference (x2 - x1) between peak point P1 and trough point G1, or the time difference (x4 - x3) between peak point P2 and trough point G2, or the average value of the above two time differences, that is, (x2 - x1 + x4 - x3) / 2. The diastolic phase of the user's heart may be the time difference between trough point G1 and peak point P2, which is (x3 - x2). The moments corresponding to peak point P1 and peak point P2 can be regarded as the cardiac pumping moments.

[0359] It can be understood that Figure 8BThe illustrated embodiments are merely exemplary to illustrate how to determine the systolic phase, diastolic phase, and the cardiac pumping moment of the heart based on the characteristic points of the impedance cardiogram. In the embodiments of the present application, the impedance cardiogram may also be an impedance cardiogram different from the above embodiments, and the electronic device 100 may also determine the systolic phase, diastolic phase, and the cardiac pumping moment of the heart based on more, fewer, or different characteristic points from the above embodiments. The present application does not make any limitations here.

[0360] S802. The electronic device 100 determines the user's heart rate based on the impedance cardiogram.

[0361] Each time the heart beats, it can complete one contraction and one relaxation. In some embodiments, the electronic device 100 may determine the user's heart rate based on the sampling time length of the impedance cardiogram and the number of peak points and valley points within the sampling interval.

[0362] Exemplarily, taking the impedance cardiogram as the above Figure 8B illustrated curve Q as an example, if the sampling time interval is [x1, x3], then within this sampling interval, the curve Q includes two peak points P1 and P2 and one valley point G1. Then the time required for the user's heart to beat once can be (x3 - x1). After that, the electronic device 100 can calculate the number of heartbeats per minute based on the time required for a single heart beat.

[0363] In some embodiments, the electronic device 100 may also determine the time required for a single heart beat based on the diastolic phase and systolic phase of the heart, and calculate the number of heartbeats per minute to obtain the user's heart rate.

[0364] In other embodiments, the electronic device 100 may also determine the user's heart rate based on the time length of the sampling interval and the number of cardiac pumpings within the sampling interval.

[0365] S803. The electronic device 100 obtains the first derivative curve of the impedance cardiogram.

[0366] The electronic device 100 may take the derivative of the impedance cardiogram to obtain the first derivative curve of the impedance cardiogram (hereinafter referred to as the first derivative curve).

[0367] S804. The electronic device 100 obtains the characteristic points of the first derivative curve.

[0368] The characteristic points of the first derivative curve may include peak points, valley points, and may also include points where the value in the first derivative is zero (also referred to as zero points). The characteristic points of the first derivative curve can characterize the change rate and change trend of the cardiac impedance.

[0369] Exemplarily, Figure 8C shows a schematic diagram of the first derivative curve of the impedance cardiogram in a two-dimensional coordinate system provided by an embodiment of the present application.

[0370] As shown Figure 8C in the figure, the two-dimensional coordinate system may include a horizontal axis and a vertical axis. The horizontal axis may represent time, and the vertical axis may represent the first derivative of the cardiac impedance. The first derivative curve may be curve L in the two-dimensional coordinate system. In curve L, multiple characteristic points may be included. For example, peak point P3, zero point Z, and trough point G3. The coordinates of the above characteristic points are peak point P3(m1, n1), zero point Z(m2, 0), trough point G3(m3, n3), and m1 < m2 < m3, n1 > 0 > n2.

[0371] According to the characteristics of the first derivative, it can be known that within the time period [m1, m2] corresponding to peak point P3 to zero point Z, the cardiac impedance gradually increases, and the growth rate becomes slower and slower; within the time period [m2, m3] corresponding to zero point Z to trough point G3, the cardiac impedance gradually decreases, and the decrease becomes faster and faster.

[0372] S805, the electronic device 100 determines the cardiac output and stroke volume of the user based on the user's heart rate, the characteristic points of the cardiac impedance curve, and the characteristic points of the first derivative curve through the cardiac function evaluation model.

[0373] The electronic device 100 may store one or more cardiac function evaluation models. The cardiac function evaluation model may be trained using algorithm models such as XGBoost and CNN convolutional neural network. The electronic device 100 may input the heart rate, the characteristic points of the cardiac impedance curve, and the characteristic points of the first derivative curve into the cardiac function evaluation model. The cardiac function evaluation model may determine the cardiac output and stroke volume based on the above inputs. In some other embodiments, the electronic device 100 may also use parameters such as the diastolic period, systolic period, and blood pumping moment of the heart as inputs to the cardiac function evaluation model to calculate the cardiac output and stroke volume.

[0374] Exemplarily, the cardiac function evaluation model may calculate the cardiac output and stroke volume based on the heart rate, the characteristic points of the cardiac impedance curve, the characteristic points of the first derivative curve, etc., using the Kubicek formula.

[0375] It can be understood that Figure 8A the embodiments shown are just examples. In the embodiments of the present application, the electronic device 100 may also determine the cardiac output and stroke volume based on the cardiac impedance curve in a manner different from the above embodiments, and the present application does not make any limitations here.

[0376] In some embodiments, the electronic device 100 may also send the cardiac impedance curve to the electronic device 200, and the electronic device 200 may pass it through the above Figure 8AUsing the same or similar processes as shown, the cardiac function indicators of the user are determined. After the cardiac function indicators are determined, the electronic device 200 can output the cardiac function indicators or send the cardiac function indicators to the electronic device 100.

[0377] The following introduces two schematic diagrams of interfaces for outputting cardiac function indicators provided by the embodiments of the present application.

[0378] In some application scenarios, the electronic device 100 (or the electronic device 200) for outputting cardiac function indicators can be an electronic device such as a mobile phone, a tablet computer, or a computer.

[0379] Exemplarily, if the electronic device 100 is the mobile phone 30 in the above Figure 4A shown embodiment, after determining the cardiac function indicators, the electronic device 100 can display an output interface 900 as Figure 9A shown.

[0380] As Figure 9A shown, the output interface 900 can include multiple cardiac function indicators. For example, the stroke volume is 75 ml, the cardiac output is 4.5 L / min, and the heart rate is 60 beats / min. Optionally, the electronic device 100 can also display the determination result of the cardiac function indicator near the cardiac function indicator, such as determination results 901, 902, and 903. Among them, the determination result 901 is displayed near the stroke volume to indicate whether the stroke volume is normal; the determination result 902 is displayed near the cardiac output to indicate whether the cardiac output is normal; the determination result 903 is displayed near the heart rate to indicate whether the heart rate is normal. In the Figure 9A shown embodiment, the determination results of the user's cardiac output, stroke volume, and heart rate are all normal. Optionally, the output interface 900 can also display an evaluation result 904, and the evaluation result 904 can be the text "Your heart ejection function is normal. Exercise regularly and stay healthy."

[0381] Another exemplarily, if the electronic device 100 is the mobile phone 30, after determining the cardiac function indicators, the electronic device 100 can also display an output interface 910 as Figure 9B shown.

[0382] As Figure 9B shown, the output interface 900 can include multiple cardiac function indicators. For example, the stroke volume is 50 ml, the cardiac output is 3.0 L / min, and the heart rate is 60 beats / min. Optionally, the electronic device 100 can also display the determination result of the cardiac function indicator near the cardiac function indicator, such as determination results 911, 912, and 913, and each of the above determination results can be used to indicate whether the corresponding cardiac function indicator is normal. In the Figure 9BIn the illustrated embodiment, the user's cardiac output and stroke volume are both low, which is abnormal, and the determination result of the heart rate is normal. Optionally, the output interface 900 may further display an evaluation result 914, and the evaluation result 914 may be the text "Your heart's ejection function is weak. It is recommended to pay more attention and consult a professional doctor if necessary." Further optionally, the output interface 910 may further display a data sharing control 915, and the data sharing control 915 can be used to trigger the electronic device 100 to send the cardiac function indicators and the determination results of the cardiac function indicators to another electronic device (such as the electronic device selected by the user in the address book of the electronic device 100, or the electronic device preset by the user).

[0383] Exemplarily, if the electronic device 100 is a mobile phone 30 and the user is in a motion state during the execution of cardiac function monitoring by the electronic device 100, after the electronic device 100 determines the cardiac function indicators, it may also display as Figure 9C the output interface 920 shown.

[0384] As Figure 9C shown, the output interface 920 may include a schematic diagram 921 of cardiac function indicators and an evaluation result 922. Among them, the schematic diagram 921 of cardiac function indicators can be used to represent the relationship between the user's stroke volume (or cardiac output) and the exercise heart rate. The evaluation result 922 can be used to indicate whether the user's cardiac function is normal. Optionally, the evaluation result 922 can also be used to indicate the exercise intensity and exercise time supported by the user's heart, etc. For example, the evaluation result 922 may be the text "You easily completed 40 minutes of high-intensity exercise, your heart function is normal, and it is recommended to continue to maintain the exercise habit."

[0385] In some other embodiments, if the electronic device 100 is a mobile phone 30 and the user is in a motion state during the execution of cardiac function monitoring by the electronic device 100, the electronic device 100 may also first display the above Figure 9A shown output interface 900. After that, the electronic device 100 can receive and respond to the user's upward sliding operation on the output interface 900, and display the content in the output interface 920 shown Figure 9C in the output interface 900.

[0386] It can be understood that the above Figures 9A to 9C shown embodiments are only three examples. In the embodiments of the present application, the output interface of the electronic device 100 for outputting cardiac function indicators may further include more, less, or different content from the above embodiments, and the present application does not make any limitations here.

[0387] In some application scenarios, the electronic device 100 (or electronic device 200) for outputting cardiac function indicators may be a wearable device such as a watch or a bracelet.

[0388] Exemplarily, if the electronic device 100 is a watch 20, after determining the cardiac function index, the electronic device 100 may display an output interface 1010 as shown in Figure 10A shown.

[0389] As Figure 10A shown, the output interface 1010 may include multiple cardiac function indexes. For example, the stroke volume is 75 ml, the cardiac output is 4.5 L / min, and the heart rate is 60 beats / min. Optionally, the electronic device 100 may also display the determination result of the cardiac function index near the cardiac function index, such as determination result 1011, determination result 1012, and determination result 1013. Each of the above determination results can be used to indicate whether the corresponding cardiac function index is normal. The determination result can be represented by a horizontal line, an upward arrow, and a downward arrow. When the determination result is a horizontal line, it indicates that the cardiac function index is normal; when the determination result is an upward arrow, it indicates that the cardiac function index is on the high side; when the determination result is a downward arrow, it indicates that the cardiac function index is on the low side. In the Figure 10A shown embodiment, the determination results of the user's cardiac output, stroke volume, and heart rate are all horizontal lines, indicating that the determination results of these three cardiac function indexes are all normal.

[0390] In some embodiments, if the user is in a motion state during the process of the electronic device 100 performing cardiac function monitoring, the electronic device 100 may also receive and respond to the user's upward sliding operation on the Figure 10A shown output interface 1010, and display a cardiac function index schematic diagram 1014 as shown in Figure 10B shown in the output interface 1010. In other embodiments, if the user is in a motion state during the process of the electronic device 100 performing cardiac function monitoring, the electronic device 100 may also directly display the output interface 1010 as shown in Figure 10B shown after determining the cardiac function index.

[0391] As Figure 10B shown, the cardiac function index schematic diagram 1014 can be used to characterize the relationship between the user's stroke volume (or cardiac output) and the exercise heart rate. Optionally, at this time, a data sharing control 1015 may also be displayed in the output interface 1010. The data sharing control 1015 can be used to trigger the electronic device 100 to send the cardiac function index and the determination result of the cardiac function index, etc. to another electronic device (such as the electronic device selected by the user in the address book of the electronic device 100, or the electronic device preset by the user).

[0392] Another exemplarily, Figure 10C shows an output interface 1020 when the determination result is abnormal provided by the embodiment of the present application.

[0393] As Figure 10CAs shown, the output interface 1020 may include multiple cardiac function indicators. For example, the stroke volume is 50 ml, the cardiac output is 3.0 L / min, and the heart rate is 60 beats / min. The electronic device 100 may also display the determination results of these cardiac function indicators near the indicators, such as determination result 1021, determination result 1022, and determination result 1023. The functional description and form description of the determination results may refer to the relevant descriptions in the Figure 10A embodiments shown above. In Figure 10B the embodiments shown, the determination results 1021 of the user's cardiac output and 1022 of the stroke volume are both downward arrows, indicating that the user's cardiac output and stroke volume are low. In addition, the determination result of the heart rate is a horizontal line, indicating that the user's heart rate is normal. It can be understood that in other embodiments, the electronic device 100 may also use symbols different from the above arrows, or use identification of different colors to output the determination results of each cardiac function indicator. For example, a red identification is used to prompt the user that the cardiac function indicator is high, a yellow identification is used to prompt the user that the cardiac function indicator is low, and a green identification is used to prompt the user that the cardiac function indicator is normal, etc. The present application does not limit the output form of the determination results.

[0394] It can be understood that the Figures 10A to 10C embodiments shown above are only examples. In the embodiments of the present application, the output interface of the electronic device 100 for outputting cardiac function indicators may also include more, fewer, or different content from the above embodiments. The present application does not limit this here.

[0395] In some application scenarios, if the electronic device 100 for outputting cardiac function indicators is the earphone 10, before outputting the cardiac function indicators, the electronic device 100 may determine the output mode of the cardiac function indicators based on factors such as whether the user is wearing the earphone and whether the electronic device 100 is connected to the electronic device 200.

[0396] The following introduces a process for determining the output mode of cardiac function indicators provided by the embodiments of the present application when the electronic device 100 is the earphone 10.

[0397] As Figure 11 shown, when the electronic device 100 is the earphone 10, the specific process for the earphone 10 to determine the output mode of the cardiac function indicators may include the following steps:

[0398] S1101, the earphone 10 determines whether the earphone 10 is worn by the user.

[0399] The earphone 10 may respectively determine whether the left earphone 11 and the right earphone 12 are worn by the user.

[0400] In some embodiments, the detection of headphone wearing can be achieved by connecting a pull-up resistor to the pins of the headphones 10. For example, when the left headphone 11 is inserted, the front end of the left headphone 11 (i.e., the contact of the left channel) will connect the detection pin to the left channel. At this time, since the left channel is connected to the ground and the resistance is very small, it is equivalent to the detection pin being grounded, so the detection pin changes from a high level to a low level. After the detection pin detects the change from a high level to a low level, it can send an interrupt signal to the processor (such as a CPU) of the headphones 10, and the processor can determine whether the left headphone 11 is worn based on whether it receives the interrupt signal. It can be understood that the right headphone 12 can also be determined whether it is worn by the user in a similar manner.

[0401] In other embodiments, the monitoring of headphone wearing can also be achieved by devices such as a gyroscope sensor and an acceleration sensor inside the headphones 10.

[0402] It can be understood that the above two are only examples of the wearing detection method. In the embodiments of the present application, the headphones 10 can also use other methods to determine whether they are worn by the user, and the present application does not make any limitations here.

[0403] If it is detected that the left headphone 11 and / or the right headphone 12 is worn by the user, the headphones 10 can perform the following step S1102.

[0404] If it is detected that neither the left headphone 11 nor the right headphone 12 is worn by the user, the headphones 10 can perform the following step S1103 or can also perform the following step S1105.

[0405] S1102, the headphones 10 play the cardiac function index at volume 1.

[0406] In some embodiments, if the headphones 10 have played audio before performing cardiac function monitoring, volume 1 can be the volume at which the headphones 10 previously played the audio.

[0407] The cardiac function index can include cardiac output and stroke volume. Optionally, it can also include indicators such as heart rate.

[0408] In some embodiments, when the headphones 10 play the cardiac function index, they can also play the determination result. For the specific content of the determination result, reference can be made to the relevant description in step S707 shown above Figure 7 and will not be elaborated here.

[0409] S1103, the headphones 10 determine whether the headphones 10 have established a communication connection with the electronic device 200.

[0410] When the user is not wearing the earphone 10, the earphone 10 can further determine whether a communication connection is established with another electronic device (referred to as the electronic device 200 here). The communication connection can be a wired communication connection or a wireless communication connection.

[0411] If the earphone 10 has established a communication connection with the electronic device 200, the earphone 10 can perform the following step S1104.

[0412] If the earphone 10 has not established a communication connection with any electronic device, the earphone 10 can perform the following step S1105.

[0413] S1104. The earphone 10 sends an output instruction 1 to the electronic device 200, and the output instruction 1 includes a cardiac function index.

[0414] S1105. The earphone 10 plays the cardiac function index at volume 2, and volume 2 is greater than volume 1.

[0415] When the user is not wearing the earphone 10, the earphone 10 can play the cardiac function index at volume 2. Volume 2 is greater than volume 1.

[0416] In this way, when the user is not wearing the earphone 10, the earphone 10 can increase the volume of playing the cardiac function index so that the user can hear the playing content.

[0417] It can be understood that Figure 11 The illustrated embodiments are only illustrative. Factors such as whether the earphone 10 is worn and whether the earphone 10 has established a communication connection with another electronic device will affect the way the earphone 10 outputs the cardiac function index. In the embodiments of the present application, the earphone 10 can also adopt Figure 11 a way different from the illustrated embodiments to determine the way the earphone 10 outputs the cardiac function index. For example, receiving and responding to the user's operation on a specified button on the earphone 10 and playing the cardiac function index, etc. The present application does not make any limitation here.

[0418] In some embodiments, for example, in the Figure 6F illustrated application scenario above, the earphone 10 and the mobile phone 30 can cooperate to monitor the cardiac function of the user. The following introduces a monitoring method for multi-device cooperation provided by the embodiments of the present application.

[0419] Figure 12A The flowchart of another monitoring method provided by the embodiments of the present application is shown.

[0420] Exemplarily, as Figure 12A shown, the specific process of the monitoring method can include the following steps:

[0421] S1201. The earphone 10 turns on cardiac function monitoring.

[0422] For the specific content of step S1201, reference can be made to the relevant description in step S701 as described above, which will not be elaborated here. Figure 7 Shown in the relevant description in step S701, which will not be elaborated here.

[0423] S1202, the earphone 10 sends a start notification to the mobile phone 30. The start notification is used to notify the mobile phone 30 to start monitoring the cardiac function.

[0424] The earphone 10 can send a start notification to the mobile phone 30 through the communication connection between the earphone 10 and the mobile phone 30. In some embodiments, the communication connection between the earphone 10 and the mobile phone 30 can be a wired communication connection. In other embodiments, the communication connection between the earphone 10 and the mobile phone 30 can also be a wireless communication connection such as a Bluetooth connection.

[0425] S1203, the earphone 10 obtains the wearing status of the earphone 10. The wearing status is used to indicate whether the left earphone 11 and the right earphone 12 are worn by the user.

[0426] The earphone 10 can perform a wearing detection, determine whether the left earphone 11 is worn by the user, and determine whether the right earphone 12 is worn by the user, and determine the wearing status of the earphone 10 based on the result of the wearing detection.

[0427] S1204, the earphone 10 determines the working electrode based on the wearing status of the earphone 10. The working electrode is the electrode used during the monitoring process.

[0428] When it is determined that the user wears the left earphone 11 and does not wear the right earphone 12, the earphone 10 can determine the electrodes on the left earphone 11 (such as electrode 1 and electrode 3) as the working electrodes.

[0429] When it is determined that the user does not wear the left earphone 11 and wears the right earphone 12, the earphone 10 can determine the electrodes on the right earphone 12 (such as electrode 2 and electrode 4) as the working electrodes.

[0430] When it is determined that the user wears the left earphone 11 and wears the right earphone 12, the earphone 10 can determine the electrodes on the left earphone 11 as the working electrodes, or determine the electrodes on the right earphone 12 as the working electrodes.

[0431] S1205, the earphone 10 outputs a prompt 3 based on the working electrode of the earphone 10. The prompt 3 is used to prompt the user about the hand holding the mobile phone 30 and the holding posture.

[0432] When it is determined that the electrodes on the left earphone 11 are the working electrodes, the prompt 3 can prompt the user to hold the mobile phone 30 with the right hand, and when holding, the right hand touches at least one electrode on the mobile phone 30.

[0433] When it is determined that the electrodes on the right earphone 12 are the working electrodes, the prompt 3 can prompt the user to hold the mobile phone 30 with the left hand, and when holding, the left hand touches at least one electrode on the mobile phone 30.

[0434] In this way, it can be ensured that the contact points between the working electrodes of the earphone 10 and the user's skin, and the contact points between the working electrodes of the mobile phone 30 and the user's skin are respectively located at both ends of the thoracic tissue, and the resistance between the working electrodes of the two devices is determined as the body resistance of the user.

[0435] S1206. The mobile phone 30 determines the working electrode in the mobile phone 30 based on the posture of the user holding the mobile phone 30.

[0436] After receiving the start notification sent by the earphone 10, the mobile phone 30 can determine the posture of the user holding the mobile phone 30 and determine the working electrode of the mobile phone 30.

[0437] In some embodiments, since the mobile phone 30 can determine the positions of the respective electrodes on the mobile phone 30 relative to the mobile phone 30, therefore, the mobile phone 30 can determine the electrodes that the user's skin can contact in this holding posture based on the posture of the user holding the mobile phone 30. It should be noted that in some embodiments, the mobile phone 30 can obtain the posture of the user holding the mobile phone 30 through sensors such as gyroscopes. In other embodiments, the mobile phone 30 can also determine the posture of the user holding the mobile phone 30 based on other methods, which are not limited in this application.

[0438] Exemplarily, if the mobile phone 30 is the mobile phone 30 as shown in Figure 4B and the user's holding posture is to hold the left and right sides of the mobile phone 30 with one hand, then the mobile phone 30 can determine that the user can contact all the electrodes on the mobile phone 30. Therefore, the mobile phone 30 can select any one (or two) of the electrodes as the working electrode of the mobile phone 30.

[0439] S1207. The earphone 10 determines whether the working electrode of the earphone 10 is in good contact with the skin.

[0440] Steps S1207 to S1210 are all optional steps. In some embodiments, if there are more than one working electrode of the earphone 10, the earphone 10 can execute steps S1207 to S1208; if there are more than one working electrode of the mobile phone 30, the mobile phone 30 can execute the following steps S1209 to S1210. Moreover, steps S1207 and S1209 can be executed simultaneously, or only one of the steps can be executed, or they can be executed in sequence, and the execution order of steps S1207 and S1209 is not limited in the embodiments of this application.

[0441] If the working electrodes of the earphone 10 include at least two, and the working electrodes of the mobile phone 30 also include at least two, then the two working electrodes of the earphone 10 and the two working electrodes of the mobile phone 30 can form a new monitoring circuit, and the circuit components in this monitoring circuit can be arranged in the earphone 10 and / or the mobile phone 30. In some embodiments, the connection manner of each circuit component in this monitoring circuit can refer to the relevant description in the above Figure 5E illustrated embodiment, wherein, the two working electrodes of the earphone 10 can correspond to Figure 5E the illustrated electrode 1 and electrode 3, and the two working electrodes of the mobile phone 30 can correspond to Figure 5E the illustrated electrode 2 and electrode 4. In other embodiments, the monitoring circuit formed by the working electrodes in the earphone 10 and the mobile phone 30 can also be a monitoring circuit different from the above embodiments, and the present application does not make any limitation here.

[0442] The manner in which the earphone 10 determines whether the working electrodes of the earphone 10 are in good contact with the skin can refer to the relevant description in the above Figure 7 illustrated step S703, and details are not described herein again.

[0443] When the earphone 10 determines that the working electrodes of the earphone 10 are in good contact with the skin, the earphone 10 can execute the following step S1211. Optionally, the earphone 10 can also send a contact notification to the mobile phone 30 to notify the mobile phone 30 that the working electrodes of the earphone 10 are in good contact.

[0444] When the earphone 10 determines that the working electrodes of the earphone 10 are in poor contact with the skin, the earphone 10 can execute the following step S1208.

[0445] S1208, the earphone 10 outputs a prompt 4, and the prompt 4 is used to prompt the user that the working electrodes of the earphone 10 are in poor contact with the skin.

[0446] In some embodiments, the earphone 10 can output the prompt 4 in one or more ways such as voice playback, indicator light flashing, vibration, etc. In other embodiments, if the earphone 10 includes a display screen, the earphone 10 can also output the prompt 4 in the way of display on the display screen. In other embodiments, the earphone 10 can also send a reminder instruction 11 to the mobile phone 30, and this reminder instruction 1 is used to instruct the mobile phone 30 to output the prompt 4 to prompt the user that the working electrodes of the earphone 10 are in poor contact with the user's skin.

[0447] S1209, the mobile phone 30 determines whether the working electrodes of the mobile phone 30 are in good contact with the skin.

[0448] The manner in which the mobile phone 30 determines whether the working electrodes of the mobile phone 30 are in good contact with the skin can refer to the relevant description in the above Figure 7 illustrated step S703, and details are not described herein again.

[0449] When the mobile phone 30 determines that the working electrode of the mobile phone 30 is in good contact with the skin, the mobile phone 30 may execute the following step S1211. Optionally, the mobile phone 30 may also send a contact notification to the earphone 10 to notify the earphone 10 that the working electrode of the mobile phone 30 is in good contact.

[0450] When the mobile phone 30 determines that the working electrode of the mobile phone 30 is in poor contact with the skin, the mobile phone 30 may execute the following step S1209.

[0451] S1210, the mobile phone 30 outputs a prompt 5, and the prompt 5 is used to prompt the user that the working electrode of the mobile phone 30 is in poor contact with the skin.

[0452] In some embodiments, the mobile phone 30 may output the prompt 5 in one or more ways such as display on the display screen, voice playback, indicator light flashing, vibration, etc. In other embodiments, the mobile phone 30 may also send a reminder instruction 2 to the earphone 10, and the reminder instruction 2 is used to instruct the earphone 10 to output the prompt 5 to prompt the user that the working electrode of the mobile phone 30 is in poor contact with the user's skin.

[0453] S1211, the earphone 10 and the mobile phone 30 determine a cardiac impedance curve through the working electrode, and the cardiac impedance curve is used to characterize the relationship between the user's cardiac impedance and time.

[0454] In some embodiments, if the earphone 10 and the mobile phone 30 execute the above steps S1207 to S1210, then the earphone 10 and the mobile phone 30, after determining that the working electrodes are all in good contact, execute step S1211.

[0455] S1212, the earphone 10 determines a cardiac function index based on the cardiac impedance curve.

[0456] S1213, the earphone 10 outputs the cardiac function index.

[0457] The specific content of steps S1211 to S1213 may refer to the relevant descriptions in the above Figure 7 shown steps S705 to S707, and will not be elaborated here.

[0458] By using the monitoring method provided in the embodiments of the present application, the cardiac function of the user can be monitored through the earphone 10 and the mobile phone 30 (or other multiple electronic devices).

[0459] It should be noted that Figure 12A the shown embodiments are only exemplary illustrations that the cardiac function of the user can be monitored through the cooperation of multiple devices. In the embodiments of the present application, when executing the above Figure 12AThe electronic device implementing the monitoring method described above can also be an electronic device different from the earphone 10 and the mobile phone 30, such as a combination of the earphone 10 and a tablet computer, the earphone 10 and a watch, etc. This application does not make any limitation in this regard.

[0460] In some other embodiments, Figure 12A The step S1201 shown above, and any one or more of the steps from step S1212 to step S1213 can also be executed by the mobile phone 30. This embodiment of the application does not make any limitation on the execution entity of step S1201, and steps S1212 to S1213.

[0461] In some application scenarios, when the mobile phone 30 and the earphone 10 cooperate to perform heart function monitoring, the mobile phone 30 can also output a prompt to guide the user on how to hold the mobile phone, or to prompt whether the electrodes are in good contact with the skin.

[0462] Exemplarily, when the left earphone is worn, the mobile phone 30 can display a guidance interface 1200 as shown Figure 12B below based on the wearing detection result sent by the earphone 10.

[0463] As shown Figure 12B below, the guidance interface 1200 includes operation guidance, which may include an animation 1201 and text 1202. The operation guidance can be used to guide the user on the posture of holding the mobile phone and / or the way of wearing the earphone. For example, when the left earphone is worn, the animation 1201 can be a dynamic diagram of holding the mobile phone with the right hand, and the text 1202 may include "The left earphone is detected to be worn. It is recommended to hold the mobile phone with the right hand".

[0464] Another example is that when it is detected that the left earphone 11 is not in good contact with the user's skin, the mobile phone 30 can display a prompt interface 1210 as shown Figure 12C below.

[0465] As shown Figure 12C below, the prompt interface 1210 may include a poor contact prompt, which may include an animation 1211 and text 1212. The poor contact prompt can be used to prompt the user that there is currently a poor contact between the electrode and the user's skin. For example, when the left earphone is not in good contact with the skin, the animation 1211 can be a dynamic diagram of the user wearing the left earphone, and the text 1212 may include "It is detected that the left earphone is not in good contact with the skin. Please adjust the wearing method".

[0466] Another example is that when it is detected that the electrode on the mobile phone 30 is not in good contact with the skin, the mobile phone 30 can display a prompt interface 1220 as shown Figure 12D below.

[0467] As shown Figure 12DAs shown, the prompt interface 1220 may include a poor contact prompt, and the poor contact prompt may include an animation 1221 and text 1222. The poor contact prompt can be used to prompt the user that there is currently poor contact between the electrode and the user's skin. For example, in the case of poor contact between the electrode of the mobile phone and the skin, the animation 1221 can be a dynamic picture of the user's finger touching the electrode, and the text 1222 may include "Poor contact between the mobile phone electrode and the skin is detected. Please touch the fingerprint key."

[0468] It can be understood that Figures 12B to 12D These are just some examples. In the embodiments of the present application, the mobile phone 30 may also output more, fewer, or different prompts than the above embodiments, and the present application does not make any limitations here.

[0469] The following introduces the functional modules of an electronic device 100 provided by the embodiments of the present application.

[0470] Figure 13 The schematic diagram of the functional modules of an electronic device 100 provided by the embodiments of the present application is shown.

[0471] As Figure 13 shown, the electronic device 100 may include an interaction module 1301, a data monitoring module 1302, a data processing module 1303, and an output module 1304. Optionally, the electronic device 100 may further include any one or more of the following: a contact detection module 1305 and a state detection module 1306.

[0472] Among them, the interaction module 1301 can receive the operations of the user. For example, the operation of the user to turn on the heart function monitoring, the operation of the user to view the heart function indicators, etc. In some embodiments, the interaction module 1301 can receive and respond to the operation of the user to turn on the heart function monitoring, and send a start instruction to the data monitoring module 1302. The start instruction is used to instruct the data monitoring module 1302 to start monitoring the current flowing through the user's body and the voltage across the user's chest tissue. In some other embodiments, the interaction module 1301 can receive and respond to the operation of the user to turn on the heart function monitoring, and send a contact detection instruction to the contact detection module 1305. The contact detection instruction is used to instruct the contact detection module 1305 to determine the contact situation between the electrode in the monitoring circuit and the skin. In some embodiments, the interaction module 1301 can also receive and respond to the operation of the user to turn on the heart function monitoring, and send a detection instruction to the state detection module 1306. The detection instruction is used to instruct the state detection module 1306 to determine the current state of the user. In some other embodiments, the interaction module 1301 can also receive and respond to the operation of the user to set the current state (such as resting state, sleeping state, exercise state, etc.), determine the user state, and send the user state to the data processing module 1303.

[0473] The data monitoring module 1302 can receive and respond to a start instruction to start monitoring the current flowing through the user's body and the voltage across the user's thoracic tissue. It should be noted that the start instruction can be sent by the interaction module 1301 or the electronic device 200. In some embodiments, the data monitoring module 1302 can also determine the user's cardiac impedance curve based on the current flowing through the user's body and the voltage across the user's thoracic tissue. After determining the cardiac impedance curve, the data monitoring module 1302 can send the cardiac impedance curve to the data processing module 1303. It should be noted that the start instruction received by the data monitoring module 1302 can be sent by the interaction module 1301 or the contact detection module 1305.

[0474] The data processing module 1303 can determine multiple cardiac function indexes of the user based on the cardiac impedance curve. The cardiac function indexes can include cardiac output and stroke volume. Optionally, it can also include the user's heart rate. The data processing module 1303 can also send the cardiac function indexes to the output module 1304. In some embodiments, multiple value ranges of the cardiac function indexes can be stored in the data processing module 1303. The data processing module 1303 can also determine a determination result based on the actual value of the cardiac function index and the preset value range. The determination result can be used to indicate whether a single cardiac function index is normal and / or whether the user's cardiac function is normal, etc. Optionally, different value ranges of multiple cardiac function indexes in different states can also be stored in the data processing module 1303. At this time, the data processing module 1303 can also determine a determination result based on the user state sent by the state detection module 1306, the actual value of the cardiac function index, and the preset value range in the current user state. After determining the determination result, the data processing module 1303 can also send the determination result to the output module 1304.

[0475] The output module 1304 can output the cardiac function indexes sent by the data processing module 1303. Optionally, it can also output the determination result sent by the data processing module, etc. In some embodiments, the output module 1304 can also receive and respond to the contact detection result sent by the contact detection module 1305 to output a prompt 2, and the prompt 2 is used to prompt the user that the electrode is not in good contact with the skin. In some embodiments, the output module 1304 can also determine the output mode or output volume, etc. In some embodiments, when the output module 1304 outputs the cardiac function indexes, it can also send an output instruction 1 to the electronic device 200. The output instruction 1 includes the cardiac function indexes, and the output instruction 1 is used to instruct the electronic device 200 to output the cardiac function indexes.

[0476] The contact detection module 1305 can receive and respond to the contact detection instruction sent by the interaction module 1301, and determine whether the electrodes in the monitoring circuit are in good contact with the skin. When it is determined that all the electrodes are in good contact with the skin, the contact detection module 1305 can send a start instruction to the data monitoring module 1302, and the start instruction is used to instruct the data monitoring module 1302 to start monitoring the current flowing through the user's body and the voltage across the user's chest tissue. When it is determined that there is an electrode with poor contact with the skin, the contact detection module 1305 can send the contact detection result to the output module 1304, and the contact detection result is used to indicate that there is an electrode with poor contact with the skin in the monitoring circuit, or is used to indicate the electrode with poor contact with the skin in the monitoring circuit.

[0477] The status detection module 1306 can determine the current status of the user. The status of the user can include a resting state and a moving state, and optionally, can also include a sleeping state. In some embodiments, the status detection module 1306 can monitor the status of the user in real time. In other embodiments, the status detection module 1306 can also receive and respond to the detection instruction sent by the interaction module 1301 to determine the current status of the user. After determining the status of the user, the status detection module 1306 can send the status of the user to the data processing module 1303.

[0478] It can be understood that Figure 13 The illustrated embodiment is only an example. In the embodiments of the present application, the electronic device 100 may further include more, fewer or different functional modules than those in the above Figure 13 illustrated embodiment. In addition, multiple functional modules in the above embodiments may be combined into one functional module, or one functional module in the above embodiments may be split into multiple functional modules, and the present application does not make any limitations here.

[0479] Next, a functional module of a health monitoring system 1000 provided by an embodiment of the present application will be introduced.

[0480] Figure 14 A schematic diagram of a functional module of a health monitoring system 1000 provided by an embodiment of the present application is shown.

[0481] As Figure 14 shown, the health monitoring system 1000 may include an electronic device 100 and an electronic device 200. The electronic device 100 may include a data monitoring module 1302 and a communication module 1307, and the electronic device 200 may include a communication module 1401, an interaction module 1402, a data processing module 1403, an output module 1404, etc. Among them:

[0482] The data monitoring module 1302 can receive and respond to the start instruction sent by the communication module 1307, and start monitoring the current flowing through the user's body and the voltage across the user's thoracic tissue. In some embodiments, the data monitoring module 1302 can also determine the user's cardiac impedance curve based on the current flowing through the user's body and the voltage across the user's thoracic tissue. After determining the cardiac impedance curve, the data monitoring module 1302 can send the cardiac impedance curve to the communication module 1307.

[0483] The communication module 1307 can receive the start instruction sent by the communication module 1401 in the electronic device 200, and send the start instruction to the data monitoring module 1302. The communication module 1307 can also receive the cardiac impedance curve sent by the data monitoring module 1302, and send the cardiac impedance curve to the communication module 1401.

[0484] The communication module 1401 can receive the start instruction sent by the interaction module 1402, and send the start instruction to the communication module 1307. The communication module 1401 can also receive the cardiac impedance curve sent by the communication module 1307, and send the cardiac impedance curve to the data processing module 1403.

[0485] The interaction module 1402 can receive and respond to the user's operation of enabling cardiac function monitoring, and send a start instruction to the communication module 1401.

[0486] The data processing module 1403 can determine multiple cardiac function indicators based on the cardiac impedance curve sent by the communication module 1401, such as cardiac output and stroke volume, etc. The data processing module 1403 can send the cardiac function indicators to the output module 1404. Optionally, the data processing module 1403 can also determine a determination result, and the specific content of the determination result can refer to the description in the above embodiments, which will not be elaborated here. The data processing module 1403 can also send the determination result to the output module 1404.

[0487] The output module 1404 can output the cardiac function indicators sent by the data processing module 1403. Optionally, it can also output the determination result sent by the data processing module 1403.

[0488] It can be understood that Figure 14 The illustrated embodiment is just an example. In the embodiments of the present application, the health monitoring system 1000 may further include more, fewer, or the same as Figure 14 the illustrated embodiment Figure 14For different functional modules in the illustrated embodiments, some functional modules in the electronic device 200 (such as any one or more of the interaction module, data processing module, output module, etc.) may also be provided in the electronic device 100, and some functional modules may be combined into one functional module, and one functional module may also be split into multiple functional modules. This application does not make any limitations in this regard. Among them, for the specific function descriptions of the contact detection module and the status detection module, reference may be made to the relevant descriptions in the above Figure 13 illustrated embodiments.

[0489] In some other embodiments, the electronic device 100 may further include any one or more of the following: an interaction module 1301, a data processing module 1303, an output module 1304, a contact detection module 1305, a status detection module 1306, etc. For the specific functions of the above respective modules, reference may be made to the relevant descriptions in the above Figure 13 illustrated embodiments. In addition, it should be noted that the interaction module, the data processing module, and the output module may be provided in the same electronic device (such as the electronic device 100 or the electronic device 200) at the same time, or may be separately provided in the electronic device 100 and the electronic device 200, or the same functional modules may be provided in the electronic device 100 and the electronic device 200. For example, an output module 1304 is provided in the electronic device 100, and an output module 1404 is provided in the electronic device 200, etc. This application does not make any limitations in this regard.

[0490] For ease of subsequent description, the above-mentioned electronic device 100 and electronic device 200 may be collectively referred to as a device. It should be understood that the division of each unit in the device is only a logical function division. In actual implementation, it may be fully or partially integrated into a physical entity, or physically separated. In addition, the units in the device may be implemented in the form of a processor invoking software. For example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor invokes the instructions stored in the memory to implement any of the above methods or the functions of each unit of the device. The processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside or outside the device. Alternatively, the units in the device may be implemented in the form of a hardware circuit, and the functions of some or all of the units may be implemented through the design of the hardware circuit. The hardware circuit may be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units are implemented through the design of the logical relationship of the components in the circuit. Again, in another implementation, the hardware circuit may be implemented by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured through a configuration file to implement the functions of some or all of the above units. All the units of the above device may be all implemented in the form of a processor invoking software, or all implemented in the form of a hardware circuit, or some implemented in the form of a processor invoking software and the remaining part implemented in the form of a hardware circuit.

[0491] In the embodiments of the present application, a processor is a circuit with data processing capabilities. In one implementation, the processor can be a circuit with instruction reading and running capabilities, such as a CPU, a microprocessor, a graphics processing unit (GPU) (which can be understood as a type of microprocessor), or a digital signal processor (DSP), etc.; in another implementation, the processor can achieve certain functions through the logical relationship of a hardware circuit, and the logical relationship of this hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an ASIC or a PLD, such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the configuration of the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as a type of ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0492] It can be seen that each unit in the above device can be one or more processors (or processing circuits) configured to implement the above method, such as: CPU, GPU, NPU, TPU, DPU, microprocessor, DSP, ASIC, FPGA, or a combination of at least two of these processor forms.

[0493] In addition, each unit in the above device can be integrated in whole or in part, or can be independently implemented. In one implementation, these units are integrated together and implemented in the form of a system-on-a-chip (SOC). The SOC can include at least one processor for implementing any of the above methods or implementing the functions of each unit of the device. The types of the at least one processor can be different, such as including a CPU and an FPGA, a CPU and an artificial intelligence processor, a CPU and a GPU, etc.

[0494] Next, a possible physical entity structure of the electronic device 100 provided in the embodiments of the present application will be introduced.

[0495] Exemplarily, Figure 15 FIG. shows a schematic diagram of the physical entity structure of an electronic device 100 provided in the embodiments of the present application.

[0496] As Figure 15As shown, the electronic device 100 may be the electronic device 100 in the above embodiments. The electronic device 100 may include: a processor 1501 and a memory 1502. Optionally, the electronic device 100 may further include a transmitter 1503 and a receiver 1504. Among them, the processor 1501, the memory 1502, the transmitter 1503 and the receiver 1504 may be connected to each other or connected to each other through a bus 1505.

[0497] Exemplarily, the memory 1502 is used to store computer programs and data of the electronic device 100. The memory 1502 may include, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM), etc.

[0498] The software or program code required for all or part of the functions of the electronic device 100 in the above method embodiments is stored in the memory 1502.

[0499] In a possible implementation manner, if the software or program code required for part of the functions is stored in the memory 1502, then in addition to calling the program code in the memory 1502 to implement part of the functions, the processor 1501 may also cooperate with other components (such as the transmitter 1503 and the receiver 1504, etc.) to jointly complete other functions described in the method embodiments (such as the functions of receiving or sending data).

[0500] The transmitter 1503 and the receiver 1504 are used to support the electronic device 100 to communicate, such as receiving or sending data or signals, etc.

[0501] In some embodiments, the transmitter 1503 may send the impedance cardiogram curve monitored by the electronic device 100 to the electronic device 200. In other embodiments, the transmitter 1503 may also send the current curve and voltage curve collected by the electronic device 100 to the electronic device 200.

[0502] In some embodiments, the transmitter 1503 may further send an output instruction 1 to the electronic device 200. The output instruction 1 may include cardiac function indicators. The output instruction 1 is used to instruct the electronic device 200 to output cardiac function indicators. Optionally, the output instruction 1 may further include a determination result.

[0503] In some embodiments, the receiver 1504 may receive a startup instruction sent by the electronic device 200 to the electronic device 100, and the startup instruction can be used to trigger the electronic device 100 to start cardiac function monitoring.

[0504] In some embodiments, the receiver 1504 may receive user information sent by the electronic device 200 to the electronic device 100.

[0505] In some embodiments, the receiver 1504 may receive cardiac function indexes and / or determination results sent by the electronic device 200 to the electronic device 100.

[0506] Exemplarily, the processor 1501 may be the CPU, GPU, NPU, TPU, DPU, microprocessor, DSP, ASIC, FPGA introduced above, or a combination of at least two of these processor forms, etc. The processor 1501 may be used to read the program stored in the above-mentioned memory 1502 and execute the operations performed by the electronic device 100 in any of the above embodiments.

[0507] Figure 15 For the specific operations and beneficial effects of each unit in the illustrated electronic device 100, reference may be made to the corresponding descriptions in the above method embodiments, which will not be elaborated here.

[0508] It can be understood that Figure 15 the illustrated embodiment is only an example. In the embodiments of the present application, the electronic device 100 may further include more, fewer, or different devices than those in the Figure 15 illustrated embodiment, and the present application does not make any limitations here. Figure 15 shown embodiment, and the present application does not make any limitations here.

[0509] Next, a chip system provided by the embodiments of the present application will be introduced.

[0510] The present application also provides a chip system, which includes at least one processor for implementing the functions involved on the side of the electronic device 100 in any of the above embodiments.

[0511] In a possible design, the chip system further includes a memory for storing program instructions and data, and the memory is located inside or outside the processor.

[0512] This chip system may be composed of chips or may include chips and other discrete devices.

[0513] Optionally, there may be one or more processors in the chip system. The processor may be implemented by hardware or by software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc. When implemented by software, the processor may be a general-purpose processor that implements its functions by reading software code stored in a memory.

[0514] Optionally, there may also be one or more memories in the chip system. The memory may be integrated with the processor or may be separately provided from the processor, which is not limited in the embodiments of the present application. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory (ROM). It may be integrated with the processor on the same chip or may be separately provided on different chips. The embodiments of the present application do not specifically limit the type of the memory and the setting manner of the memory and the processor.

[0515] Exemplarily, the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processing circuit (DSP), a micro controller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0516] It can be understood that the above chip system is only an example. In the embodiments of the present application, the chip system may also include more, fewer, or different devices from those in the above embodiments, which is not limited herein.

[0517] The following introduces the specific process of a monitoring method provided by the embodiments of the present application.

[0518] As Figure 16 shown, the specific process for the first electronic device to execute the monitoring method may include the following steps:

[0519] S1601. The first electronic device receives a first instruction, where the first instruction is used to instruct the first electronic device to start cardiac function monitoring.

[0520] The first electronic device may be the electronic device 100 in the above embodiments, such as the earphone 10, the watch 20, the mobile phone 30, etc.

[0521] The first electronic device is provided with a first circuit, and the first circuit includes a first electrode, a second electrode, a third electrode, a fourth electrode, an excitation current generation unit, and a voltage measurement unit. In the embodiments of the present application, the first circuit may be the monitoring circuit in the above embodiments, such as Figure 5D the monitoring circuit in the illustrated embodiment. The first electrode may be electrode 1, the second electrode may be electrode 2, the third electrode may be electrode 3, and the fourth electrode may be electrode 4.

[0522] In a possible implementation manner, receiving the first instruction specifically includes: receiving the first instruction sent by the second electronic device; or, receiving the first operation of the user on the first electronic device and generating the first instruction. The second electronic device may be the electronic device 200 in the above embodiments.

[0523] In another possible implementation manner, receiving the first instruction specifically includes: detecting that the monitoring condition is satisfied and generating the first instruction. Among them, the specific content of the monitoring condition may refer to the relevant description in step S701 shown above Figure 7 and will not be elaborated here.

[0524] S1602. In response to the first instruction, the first electronic device determines that the first electrode is in good contact with the skin through the first loop. The first loop includes the first electrode, the excitation current generation unit, and the third electrode.

[0525] After receiving the first instruction, the first electronic device may execute step S1602 and step S1603. It should be noted that the first electronic device may execute step S1602 first and then step S1603; the first electronic device may also execute step S1603 first and then step S1602.

[0526] In addition, during the process of the first electronic device executing steps S1602 to S1604, the first electrode contacts the first position of the user's skin, and the second electrode contacts the second position of the user's skin. The first position and the second position are respectively located at both ends of the thoracic tissue. Moreover, the third electrode contacts the third position of the user's skin, and the fourth electrode contacts the fourth position of the user's skin. The distance between the third position and the first position is a fixed value (i.e., equal to the distance between the first electrode and the third electrode), and the distance between the fourth position and the second position is a fixed value (i.e., equal to the distance between the second electrode and the fourth electrode). The third position and the first position are on the same side of the thoracic tissue, and the fourth position and the second position are on the same side of the thoracic tissue. In the embodiments of the present application, the first position may also be the contact point 1 in the above embodiments, the second position may also be the contact point 2 in the above embodiments, the third position may also be the contact point 3 in the above embodiments, and the fourth position may also be the contact point 4 in the above embodiments.

[0527] The first loop may be loop 1 shown above Figure 5F as shown.

[0528] The specific manner for the first electronic device to determine that the first electrode is in good contact with the skin may refer to the relevant description in step S703 shown above Figure 7 and will not be elaborated here.

[0529] S1603. The first electronic device determines that the second electrode is in good contact with the skin through a second loop. The second loop includes the second electrode, an excitation current generation unit, and the fourth electrode.

[0530] The second loop may be loop 2 shown above Figure 5G as shown.

[0531] The specific manner for the first electronic device to determine that the second electrode is in good contact with the skin may refer to the relevant description in step S703 shown above Figure 7 and will not be elaborated here.

[0532] S1604. The first electronic device determines the first information through a third loop. The third loop includes the first electrode, an excitation current generation unit, a voltage measurement unit, and the second electrode. The first electrode contacts the first position of the user's skin, and the second electrode contacts the second position of the user's skin. The first position and the second position are respectively located at both ends of the thoracic tissue.

[0533] In some embodiments, the third loop may include loop 3 and loop 4 shown above Figure 5H as shown.

[0534] In some other embodiments, when both the first electrode and the second electrode are in good contact with the user's skin, the first electrode, the excitation current generation unit, and the second electrode can form a loop, the first electrode, the voltage measurement unit, and the second electrode can form another loop, and the third loop can include the above two loops.

[0535] S1605. The first electronic device outputs first information, where the first information includes one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction, comprehensive result, first result, second result, third result, and fourth result. The comprehensive result is used to indicate whether the user's cardiac function is normal, the first result is used to indicate whether the cardiac output is normal, the second result is used to indicate whether the stroke volume is normal, the third result is used to indicate whether the heart rate is normal, and the fourth result is used to indicate whether the ejection fraction is normal.

[0536] Cardiac output, stroke volume, heart rate, ejection fraction, etc. belong to the cardiac function indicators in step S707 as described above. Figure 7 For the determination methods and function descriptions of the first result, the second result, the third result, and the fourth result, reference can be made to the relevant descriptions of the determination results of each cardiac function indicator in step S707 as described above. The comprehensive result can be the comprehensive determination result in step S707 as described above. Figure 7 For the comprehensive result, reference can be made to the relevant descriptions of the comprehensive determination results in step S707 as described above. Figure 7 The specific manner in which the first electronic device outputs the first information can be referred to the relevant descriptions in step S707 as described above, and can also be referred to the relevant descriptions in the embodiments as shown above.

[0537] For the specific manner in which the first electronic device outputs the first information, reference can be made to the relevant descriptions in step S707 as described above, and can also be referred to the relevant descriptions in the embodiments as shown above. Figure 7 For the specific manner in which the first electronic device outputs the first information, reference can be made to the relevant descriptions in step S707 as described above, and can also be referred to the relevant descriptions in the embodiments as shown above. Figures 9A - 9C , Figures 10A - 10C For the specific manner in which the first electronic device outputs the first information, reference can be made to the relevant descriptions in the embodiments as shown above, and can also be referred to the relevant content in the embodiments as shown above. Details are not described herein again. Figure 11 For the specific manner in which the first electronic device outputs the first information, reference can be made to the relevant content in the embodiments as shown above. Details are not described herein again.

[0538] In this way, the first electronic device can obtain the cardiac function monitoring results of the user in real time, facilitating the user to timely understand their own health status. Moreover, the first electronic device can also determine whether the electrodes are in good contact with the user's skin.

[0539] In a possible implementation manner, the method further includes: in response to a first instruction, outputting a first prompt, where the first prompt is used to prompt the user to start monitoring the cardiac function.

[0540] The first prompt can be the prompt 1 in step S702 as described above. Figure 7 For the first prompt, reference can be made to the prompt 1 in step S702 as described above.

[0541] In this way, the first electronic device can remind the user whether to start the cardiac function monitoring through the first prompt.

[0542] In a possible implementation, before determining the first information through the third loop, the method further includes: determining that the user state is the first state; determining the first information through the third loop, specifically including: determining a cardiac function index through the third loop, where the cardiac function index includes any one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction; determining the first information based on the first state and the cardiac function index.

[0543] In this way, the first electronic device can obtain the user state in real time and determine whether the user's cardiac function index is normal based on the user state.

[0544] In a possible implementation, the first state is a motion state, a resting state, or a sleep state.

[0545] In another possible implementation, the first state may further include, but is not limited to, any one or more of the following: a startled state, an oxygen-deficient state, a diving state, a meditation state, etc.

[0546] In a possible implementation, determining that the user state is the first state specifically includes: detecting that the user state is the first state; or, receiving and responding to an operation of the user to set the state, and determining that the user state is the first state; or, receiving second information sent by a second electronic device and determining that the user state is the first state based on the second information.

[0547] The second information may be the user information in the above Figure 7 shown in step S701 and step S707.

[0548] In this way, the first electronic device can determine the user state based on the operation of the user to set the state, and can also determine the user state based on the information sent by other electronic devices. The first electronic device can also detect the user state through devices such as sensors.

[0549] In a possible implementation, when the first state is a motion state, the first information further includes a first graph, and the first graph is used to indicate the relationship between the stroke volume and the exercise heart rate.

[0550] Exemplarily, the first graph may be Figure 9C the schematic diagram 921 of the cardiac function index in the shown output interface 920.

[0551] In this way, when the user is in a motion state, the first electronic device can output the first graph to prompt the user of the relationship between the stroke volume and the exercise heart rate.

[0552] In a possible implementation, outputting the first information specifically includes: sending a second instruction to a second electronic device, and the second instruction is used to instruct the first electronic device to output the first information.

[0553] In some embodiments, the second instruction may be the above-mentioned Figure 7 output instruction 1 in step S707 shown above.

[0554] In this way, the first electronic device can also output the first information through the second electronic device.

[0555] In a possible implementation, the first electronic device is a headset, and the method further includes: before receiving the first instruction, the headset plays the first audio; when receiving the first instruction, the playback of the first audio is paused.

[0556] In a possible implementation, the first electronic device is a headset. Playing the first audio specifically includes: playing the first audio at a first volume; outputting the first information specifically includes: if the user wears the left headset or the right headset, playing the first information at the first volume.

[0557] In a possible implementation, the first electronic device is a headset, and the method further includes: if the user does not wear the left headset and does not wear the right headset, playing the first information at a second volume, where the second volume is greater than the first volume.

[0558] The first volume may also be volume 1 in the above-mentioned Figure 11 embodiment shown, and the second volume may be volume 2 in the above-mentioned Figure 11 embodiment shown.

[0559] In this way, when the first electronic device is a headset, the first electronic device can determine the output volume of the first information based on whether the user wears the headset.

[0560] In a possible implementation, the first electronic device is a headset. Outputting the first information specifically includes: if the user does not wear the left headset and does not wear the right headset, sending a second instruction to the second electronic device, where the second instruction is used to instruct the first electronic device to output the first information.

[0561] In some embodiments, the second instruction may be the above-mentioned Figure 11 output instruction 1 in step S1104 shown above.

[0562] In this way, when the first electronic device is a headset, the first electronic device can determine whether to output the first information through the second electronic device based on whether the user wears the headset.

[0563] In a possible implementation, the first electronic device is a headset. The headset includes a left headset and a right headset. There is a wired connection between the left headset and the right headset, and a first electrode and a third electrode are provided on the left headset, and a second electrode and a fourth electrode are provided on the right headset.

[0564] When the first electronic device is a headset, the specific form description and electrode distribution of the headset can refer to the above-mentionedFigures 2A - 2C Description of the earphone 10 in the illustrated embodiment.

[0565] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a watch band. The first electrode and the third electrode are located at one end of the watch band, and the second electrode and the fourth electrode are located at the other end of the watch band. The length of the watch band is greater than the first length. The first length may be the shortest length that can span both ends of the chest tissue (such as the upper and lower ends or the left and right ends).

[0566] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a watch band. The movement includes a first button and a second button. The first electrode and the third electrode are located on the back of the movement, the second electrode is located on the first button, and the fourth electrode is located on the second button.

[0567] In a possible implementation, the first electronic device is a wearable device, which includes a movement and a watch band. The movement includes a first button and a second button. The first electrode and the third electrode are located on the watch band, the second electrode is located on the first button, and the fourth electrode is located on the second button.

[0568] When the first electronic device is a wearable device, the specific form description and electrode distribution of the wearable device can refer to the relevant description of the watch 20 in the above Figures 3A - 3E illustrated embodiment.

[0569] In a possible implementation, the first electronic device is a mobile phone, which includes one or more buttons. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons, and the first electrode, the second electrode, the third electrode, and the fourth electrode do not contact each other.

[0570] In a possible implementation, one or more buttons of the mobile phone include a volume button and a fingerprint button. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons. Specifically, the first electrode and the third electrode are disposed on the volume button, and the second electrode and the fourth electrode are disposed on the fingerprint button.

[0571] In a possible implementation, one or more buttons of the mobile phone include a first volume button, a second volume button, and a fingerprint button. One or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are disposed on one or more buttons. Specifically, the first electrode is disposed on the first volume button, the third electrode is disposed on the second volume button, and the second electrode and the fourth electrode are disposed on the fingerprint button.

[0572] When the first electronic device is a mobile phone, the specific form description and electrode distribution of the mobile phone can refer to the relevant description of the mobile phone 30 in the above Figures 4A - 4B illustrated embodiment.

[0573] In this way, when the device form of the first electronic device is different, each electrode can be arranged at different positions.

[0574] The various embodiments of the present application can be combined arbitrarily to achieve different technical effects.

[0575] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another, for example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center by wire (such as coaxial cable, optical fiber, digital subscriber line) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more integrated available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid-state disk (SSD)), etc.

[0576] Those of ordinary skill in the art can understand all or part of the processes in the above method embodiments. These processes can be completed by relevant hardware instructed by a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the above method embodiments. The foregoing storage medium includes: various media such as ROM or random access memory RAM, magnetic disk, or optical disc that can store program codes.

[0577] In summary, the above are only embodiments of the technical solutions of the present invention, and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made according to the disclosure of the present invention should be included in the protection scope of the present invention.

Claims

1. A monitoring circuit, characterized in that, Comprising: A first electrode, a second electrode, a third electrode, a fourth electrode, a first analog switch, a second analog switch, an excitation current generation unit, and a voltage measurement unit; The first analog switch includes a first port and a second port, and the second analog switch includes a third port and a fourth port; The first electrode is connected to the second electrode through the first port of the first analog switch, the excitation current generation unit, and the third port of the second analog switch; The third electrode is connected to the fourth electrode through the fourth port of the second analog switch, the excitation current generation unit, and the second port of the first analog switch; The voltage measurement unit is connected to the third electrode and the fourth electrode, or the voltage measurement unit is connected to the first electrode and the second electrode; When the first electrode contacts a first position of the user's skin, the second electrode contacts a second position of the user's skin, and the first position and the second position are respectively located at both ends of the thoracic tissue, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart.

2. The circuit according to claim 1, characterized in that, The connection of the first electrode to the second electrode through the first port of the first analog switch, the excitation current generation unit, and the third port of the second analog switch specifically includes: The first electrode, the first analog switch, the excitation current generation unit, the second analog switch, and the second electrode are connected in sequence, and the first electrode is connected to the first port of the first analog switch, and the second electrode is connected to the third port of the second analog switch; The connection of the third electrode to the fourth electrode through the fourth port of the second analog switch, the excitation current generation unit, and the second port of the first analog switch specifically includes: The third electrode, the second analog switch, the excitation current generation unit, the first analog switch, and the fourth electrode are connected in sequence, and the third electrode is connected to the fourth port of the second analog switch, and the fourth electrode is connected to the second port of the first analog switch.

3. The circuit according to claim 1 or 2, characterized in that, The excitation current generation unit is connected to the first analog switch and the second analog switch.

4. The circuit according to any one of claims 1 - 3, characterized in that, The first analog switch is configured to connect the first port or the second port; the second analog switch is configured to connect the third port or the fourth port.

5. The circuit according to claim 4, characterized in that, The excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart, specifically including: When the first analog switch connects the first port and the second analog switch connects the third port, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart; Or, When the first analog switch connects the second port and the second analog switch connects the fourth port, the excitation current generation unit is configured to generate a current flowing through the user's heart, and the voltage measurement unit is configured to measure the voltage across the user's heart.

6. The circuit according to claim 4 or 5, characterized in that, When the first analog switch connects to the first port and the second analog switch connects to the fourth port, the monitoring circuit is configured to determine whether the first electrode and the third electrode are in good contact with the skin.

7. The circuit according to any one of claims 4 - 6, characterized in that, When the first analog switch connects to the second port and the second analog switch connects to the third port, the monitoring circuit is configured to determine whether the second electrode and the fourth electrode are in good contact with the skin.

8. The circuit according to claim 6 or 7, characterized in that, When the first analog switch connects to the first port and the second analog switch connects to the fourth port, or when the first analog switch connects to the second port and the second analog switch connects to the third port, the current frequency generated by the excitation current generating unit is less than the first frequency.

9. The circuit according to any one of claims 1 - 7, characterized in that, The current frequency generated by the excitation current generating unit is greater than the first frequency.

10. An electronic device, being the first electronic device, characterized in that, The first electronic device includes the circuit according to any one of claims 1-9.

11. The electronic device according to claim 10, characterized in that, The first electronic device is an earphone, the earphone includes a left earphone and a right earphone, there is a wired connection between the left earphone and the right earphone, and the first electrode and the third electrode are provided on the left earphone, and the second electrode and the fourth electrode are provided on the right earphone.

12. The electronic device according to claim 10, characterized in that, The first electronic device is a wearable device, the wearable device includes a movement and a watchband, the first electrode and the third electrode are located at one end of the watchband, the second electrode and the fourth electrode are located at the other end of the watchband, and the length of the watchband is greater than the first length.

13. The electronic device according to claim 10, characterized in that, The first electronic device is a wearable device, the wearable device includes a movement and a watchband, the movement includes a first button and a second button, the first electrode and the third electrode are located on the back of the movement, the second electrode is located on the first button, and the fourth electrode is located on the second button.

14. The electronic device according to claim 10, characterized in that, The first electronic device is a wearable device, the wearable device includes a movement and a watchband, the movement includes a first button and a second button, the first electrode and the third electrode are located on the watchband, the second electrode is located on the first button, and the fourth electrode is located on the second button.

15. The electronic device according to claim 10, wherein, The first electronic device is a mobile phone, the mobile phone includes one or more buttons, one or more of the first electrode, the second electrode, the third electrode, and the fourth electrode are provided on the one or more buttons, and the first electrode, the second electrode, the third electrode, and the fourth electrode do not contact each other.

16. A monitoring system, wherein, Including a first electronic device and a second electronic device, there is a wired connection between the first electronic device and the second electronic device, and the monitoring system includes the circuit according to any one of claims 1-9.

17. The system according to claim 16, wherein, The first electrode and the third electrode are located on the first electronic device, and the second electrode and the fourth electrode are located on the second electronic device.

18. The system according to claim 16 or 17, wherein, The first electronic device is an earphone, and the second electronic device is a mobile phone.

19. A monitoring method, wherein, Applied to a first electronic device, the first electronic device is provided with a first circuit, the first circuit includes a first electrode, a second electrode, a third electrode, a fourth electrode, an excitation current generating unit, and a voltage measuring unit; the method includes: Receive a first instruction for instructing the first electronic device to start cardiac function monitoring; In response to the first instruction, determine that the first electrode is in good contact with the skin through a first loop, where the first loop includes the first electrode, the excitation current generation unit, and the third electrode; Determine that the second electrode is in good contact with the skin through a second loop, where the second loop includes the second electrode, the excitation current generation unit, and the fourth electrode; Determine first information through a third loop, where the third loop includes the first electrode, the excitation current generation unit, the voltage measurement unit, and the second electrode; the first electrode contacts a first position on the user's skin, the second electrode contacts a second position on the user's skin, and the first position and the second position are respectively located at both ends of the thoracic tissue; Output the first information, where the first information includes one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction, comprehensive result, first result, second result, third result, and fourth result, the comprehensive result is used to indicate whether the user's cardiac function is normal, the first result is used to indicate whether the cardiac output is normal, the second result is used to indicate whether the stroke volume is normal, the third result is used to indicate whether the heart rate is normal, and the fourth result is used to indicate whether the ejection fraction is normal.

20. The method according to claim 19, wherein, The receiving of the first instruction specifically includes: Receiving the first instruction sent by a second electronic device; Or, Receiving a first operation by the user on the first electronic device and generating the first instruction.

21. The method according to claim 19 or 20, wherein, The method further includes: In response to the first instruction, output a first prompt for prompting the user to start monitoring cardiac function.

22. The method according to any one of claims 19 - 21, wherein, Before determining the first information through the third loop, the method further includes: Determining that the user state is a first state; The determining of the first information through the third loop specifically includes: Determining cardiac function indicators through the third loop, where the cardiac function indicators include any one or more of the following: cardiac output, stroke volume, heart rate, ejection fraction; Determining the first information based on the first state and the cardiac function indicators.

23. The method according to claim 22, wherein, The first state is a motion state, a resting state, or a sleeping state.

24. The method according to claim 22 or 23, wherein, The determining that the user state is the first state specifically includes: Detecting that the user state is the first state; Or, Receiving and responding to an operation by the user to set the state and determining that the user state is the first state; Or, Receiving second information sent by a second electronic device and determining that the user state is the first state based on the second information.

25. The method according to any one of claims 22 - 24, wherein,When the first state is a motion state, the first information further includes a first graph for indicating the relationship between the stroke volume and the exercise heart rate.

26. The method according to any one of claims 19 - 25, characterized in that, The outputting of the first information specifically includes: Sending a second instruction to a second electronic device, where the second instruction is used to instruct the first electronic device to output the first information.

27. The method according to any one of claims 19 - 26, characterized in that, When the first electronic device is an earphone, the method further includes: Before receiving the first instruction, the earphone plays a first audio; When receiving the first instruction, pausing the playback of the first audio.

28. The method according to claim 27, characterized in that, The playing of the first audio specifically includes: Play the first audio at a first volume; The output of the first information specifically includes: If the user wears the left earphone or the right earphone, play the first information at the first volume.

29. The method according to claim 28, characterized in that, The method further includes: If the user does not wear the left earphone and does not wear the right earphone, play the first information at a second volume, and the second volume is greater than the first volume.

30. An electronic device, being a first electronic device, characterized in that, Comprising one or more memories, one or more processors and a first circuit; the first circuit includes a first electrode, a second electrode, a third electrode, a fourth electrode, a first analog switch, a second analog switch, an excitation current generation unit and a voltage measurement unit; the one or more memories are coupled to the one or more processors, the one or more memories are used to store computer program codes, the computer program codes include computer instructions, and when the one or more processors execute the computer instructions, the electronic device executes the method according to any one of claims 19-29 above.

31. A chip system, characterized in that, Applied to a first electronic device, the chip system includes: a processing circuit and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processing circuit, and the processing circuit is used to run the code instructions so that the chip system executes the method according to any one of claims 19-29 above.

32. A readable storage medium, comprising instructions, characterized in that, When the instruction runs on the first electronic device, the first electronic device is caused to execute the method according to any one of claims 19-29 above.

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