Parameter detection device, parameter detection method and wearable device

Abstract

The embodiment of the invention discloses a parameter detection device, a parameter detection method and wearable equipment, the parameter detection device comprises a detection unit, an impedance detection circuit, an electrocardio detection circuit and a control unit, the detection unit is connected with the impedance detection circuit and the electrocardio detection circuit, and the control unit is connected with the impedance detection circuit and the electrocardio detection circuit. The control unit is respectively connected with the impedance detection circuit and the electrocardiogram detection circuit, and the detection unit is used for detecting an electric signal of a target object; the control unit is used for controlling the on-off states of the impedance detection circuit and the electrocardiogram detection circuit; when the impedance detection circuit is in the conducting state, the electrical signal is processed through the impedance detection circuit to determine the wearing state of the parameter detection device; when the electrocardio detection circuit is in the conducting state, the electrocardio detection circuit is used for processing the electric signal to obtain an electrocardio signal. The multiplexing degree of the circuit can be improved, and the material cost of equipment is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to device detection technology, and relate to but are not limited to a parameter detection device, a parameter detection method, and a wearable device. Background Art

[0002] In actual use, wearable devices can usually realize multiple functions such as wearing detection and electrocardiogram detection.

[0003] However, in the prior art, wearing detection and ECG detection are usually implemented based on two different circuit structures. Since wearable devices are usually smaller devices, such as bracelets and watches, using two completely independent circuit structures will reduce the available space for wearable devices.

[0004] That is to say, the solution adopted in the prior art will result in a low degree of circuit reuse, thereby increasing the material cost of the wearable device. Summary of the invention

[0005] In view of this, the parameter detection device, parameter detection method and wearable device provided in the embodiments of the present application can improve the reuse degree of the circuit and reduce the material cost of the device. The parameter detection device, parameter detection method and wearable device provided in the embodiments of the present application are implemented as follows:

[0006] The embodiment of the present application provides a parameter detection device, including: a detection unit, an impedance detection circuit, an electrocardiogram detection circuit, and a control unit, wherein the detection unit is connected to the impedance detection circuit and the electrocardiogram detection circuit respectively, and the control unit is connected to the impedance detection circuit and the electrocardiogram detection circuit respectively, wherein:

[0007] A detection unit, used to detect an electrical signal of a target object;

[0008] A control unit, used to control the on / off status of the impedance detection circuit and the electrocardiogram detection circuit;

[0009] When the impedance detection circuit is in the on state, the electrical signal is processed by the impedance detection circuit to determine the wearing state of the parameter detection device; when the electrocardiogram detection circuit is in the on state, the electrical signal is processed by the electrocardiogram detection circuit to obtain an electrocardiogram signal.

[0010] In some embodiments, the apparatus further comprises: a switching unit;

[0011] The switching unit is respectively connected to the detection unit, the control unit, the impedance detection circuit and the electrocardiogram detection circuit;

[0012] The control unit controls the on / off states of the impedance detection circuit and the electrocardiogram detection circuit by controlling the state of the switching unit.

[0013] In some embodiments, the switching unit includes: a switching control chip and a switching adjustment switch;

[0014] The switching control chip is connected to the switching adjustment switch and the control unit respectively, and the switching adjustment switch is connected to the detection unit, the impedance detection circuit and the electrocardiogram detection circuit respectively;

[0015] The switching control chip is used to receive the switching signal sent by the control unit, and adjust the working state of the switching adjustment switch based on the switching signal. The working state of the switching adjustment switch includes: connecting the impedance detection circuit or connecting the electrocardiogram detection circuit.

[0016] In some embodiments, the detection unit includes at least two ECG electrodes.

[0017] In some embodiments, the toggle adjustment switch includes a double-pole double-throw switch.

[0018] In some embodiments, the parameter detection device further includes a data processing unit, and the data processing unit is connected to the impedance detection circuit and the electrocardiogram detection circuit respectively;

[0019] The data processing unit is used to determine the wearing state of the parameter detection device according to the output signal of the impedance detection circuit, and to determine the electrocardiogram signal according to the output signal of the electrocardiogram detection circuit.

[0020] In some embodiments, the data processing unit includes: a wearing determination module; the device also includes: a photoelectric sensing unit;

[0021] The photoelectric sensing unit is connected to the wearing determination module;

[0022] The wearing determination module is used to determine the wearing state of the parameter detection device according to the electrical signal when the impedance detection circuit is turned on, and the wearing state includes: normal wearing and abnormal wearing;

[0023] The photoelectric sensing unit is used to collect the photoplethysmography signal when the wearing state is normal, and determine whether the parameter detection device is worn by a living body based on the photoplethysmography signal.

[0024] In some embodiments, the impedance detection circuit includes: a voltage follower;

[0025] The impedance detection circuit outputs a signal to the data processing unit through a voltage follower.

[0026] In some embodiments, the ECG detection circuit includes: a bidirectional two-wire synchronous serial bus;

[0027] The electrocardiogram detection circuit outputs signals to the data processing unit through a bidirectional two-wire synchronous serial bus.

[0028] In another aspect of the embodiment of the present application, a parameter detection method is provided, which is applied to a parameter detection device, wherein the parameter detection device includes a detection unit, an impedance detection circuit, an electrocardiogram detection circuit, and a control unit. The method includes:

[0029] The on / off state of the impedance detection circuit and the electrocardiogram detection circuit is controlled by the control unit;

[0030] When the impedance detection circuit is in the on state, the electrical signal of the target object detected by the detection unit is processed by the impedance detection circuit to determine the wearing state of the parameter detection device;

[0031] When the ECG detection circuit is in the on state, the electrical signal is processed by the ECG detection circuit to obtain an ECG signal.

[0032] In some embodiments, after the electrical signal of the target object detected by the detection unit is processed by the impedance detection circuit to determine the wearing state of the parameter detection device, the method further includes:

[0033] If the wearing state is normal, the photoplethysmography signal is collected through the impedance detection circuit, and it is determined based on the photoplethysmography signal whether the parameter detection device is worn by a living body.

[0034] In some embodiments, the device further includes: a switching unit, which controls the on and off states of the impedance detection circuit and the electrocardiogram detection circuit through the control unit, including:

[0035] Controlling the state of the switching unit by the control unit;

[0036] The on / off states of the impedance detection circuit and the electrocardiogram detection circuit are controlled based on the state of the switching unit.

[0037] In another aspect of an embodiment of the present application, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the above-mentioned parameter detection method is implemented when the processor executes the program.

[0038] In another aspect of the embodiments of the present application, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, a parameter detection method is implemented.

[0039] According to another aspect of an embodiment of the present application, a wearable device is provided, comprising a parameter detection device.

[0040] The parameter detection device, parameter detection method and wearable device provided in the embodiments of the present application can detect the electrical signal of the target object through the detection unit; control the on / off state of the impedance detection circuit and the electrocardiogram detection circuit through the control unit; when the impedance detection circuit is in the on state, the electrical signal is processed by the impedance detection circuit to determine the wearing state of the parameter detection device; when the electrocardiogram detection circuit is in the on state, the electrical signal is processed by the electrocardiogram detection circuit to obtain the electrocardiogram signal. Among them, the switching of the impedance detection circuit and the electrocardiogram detection circuit can be realized through the control unit, so that the impedance detection circuit can be turned on when the skin impedance needs to be detected, and the electrocardiogram detection circuit can be turned on when the electrocardiogram signal needs to be detected. The two circuits share the detection unit and the control unit, which can improve the reuse degree of the circuit and reduce the material cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solution of the present application.

[0042] Figure 1 A schematic diagram of the structure of a parameter detection device provided in an embodiment of the present application;

[0043] Figure 2 Another structural schematic diagram of the parameter detection device provided in an embodiment of the present application;

[0044] Figure 3 Another structural schematic diagram of the parameter detection device provided in an embodiment of the present application;

[0045] Figure 4 Another structural schematic diagram of the parameter detection device provided in an embodiment of the present application;

[0046] Figure 5 Another structural schematic diagram of the parameter detection device provided in an embodiment of the present application;

[0047] Figure 6 Another structural schematic diagram of the parameter detection device provided in an embodiment of the present application;

[0048] Figure 7 Another structural schematic diagram of the parameter detection device provided in an embodiment of the present application;

[0049] Figure 8 A schematic diagram of the overall structure of a parameter detection device provided in an embodiment of the present application;

[0050] Fig. 9 A flow chart of a parameter detection method provided in an embodiment of the present application;

[0051] Fig.10A flowchart of a computer device provided in an embodiment of the present application;

[0052] Fig.11 A schematic diagram of the structure of a wearable device provided in an embodiment of the present application.

[0053] Icons: 110-control unit; 120-impedance detection circuit; 121-voltage follower; 130-ECG detection circuit; 131-bidirectional two-wire synchronous serial bus; 140-control unit; 150-switching unit; 151-switching control chip; 152-switching adjustment switch; 160-data processing unit; 161-wearing determination module; 170-photoelectric sensor unit; 210-memory; 220-processor; 230-network interface; 240-system bus; 10-wearable device. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0056] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0057] It should be pointed out that the terms "first\second\third" involved in the embodiments of the present application are used to distinguish similar or different objects, and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0058] The specific connection relationship of the parameter detection device provided in the embodiment of the present application and the specific function of each structure are explained in detail below.

[0059] Figure 1 For a schematic diagram of the structure of the parameter detection device provided in the embodiment of the present application, please refer to Figure 1, a parameter detection device, comprising: a detection unit 110, an impedance detection circuit 120, an electrocardiogram detection circuit 130 and a control unit 140, wherein the detection unit 110 is connected to the impedance detection circuit 120 and the electrocardiogram detection circuit 130 respectively, and the control unit 140 is connected to the impedance detection circuit 120 and the electrocardiogram detection circuit 130 respectively, wherein:

[0060] The detection unit 110 is used to detect the electrical signal of the target object; the control unit 140 is used to control the on and off states of the impedance detection circuit 120 and the electrocardiogram detection circuit 130; when the impedance detection circuit 120 is in the on state, the electrical signal is processed by the impedance detection circuit 120 to determine the wearing state of the parameter detection device; when the electrocardiogram detection circuit 130 is in the on state, the electrical signal is processed by the electrocardiogram detection circuit 130 to obtain an electrocardiogram signal.

[0061] In some embodiments, the detection unit includes at least two ECG electrodes.

[0062] The ECG electrode may specifically be an electrode sheet, such as an ECG (electrocardiogram) electrode.

[0063] Each electrode sheet may be semi-annular, and at least two electrode sheets may be used to form an annular electrode, thereby realizing the detection of electrical signals. The target object may specifically be human skin or other detectable objects, and no specific limitation is made here.

[0064] Optionally, when the parameter detection device is actually working, it can specifically detect at least two parameters, wherein the first one can be an electrical signal parameter of skin impedance, and the other one can be a parameter of an electrocardiogram signal.

[0065] Specifically, the detection unit 110 may be in contact with a target object during actual use, so that an electrical signal of the target object may be detected.

[0066] During actual operation, only one of the impedance detection circuit 120 and the ECG detection circuit 130 may be in an on state. For example, when the impedance detection circuit 120 is on, the ECG detection circuit 130 is in an off state; correspondingly, when the ECG detection circuit 130 is on, the impedance detection circuit 120 is in an off state.

[0067] When the impedance detection circuit 120 is turned on, the impedance detection circuit 120 can process the electrical signal detected by the detection unit 110, so as to directly or indirectly determine the electrical signal parameters of the skin impedance to determine the wearing state of the parameter detection device.

[0068] The impedance detection circuit 120 may include a voltage-dividing resistor, and the voltage can be divided by the resistor and the skin impedance to obtain the skin impedance value.

[0069] When the ECG detection circuit 130 is turned on, the ECG detection circuit 130 can process the electrical signal detected by the detection unit 110, so as to directly or indirectly determine the parameters of the ECG signal to obtain the ECG signal.

[0070] The control unit 140 can be specifically used to control the on and off of the impedance detection circuit 120 and the electrocardiogram detection circuit 130. The on and off switching can be performed directly by sending electrical signals, or by setting hardware such as a switch structure. There is no specific limitation here, and corresponding settings can be made according to actual needs.

[0071] When the parameter detection device is actually used, a default conduction state can be set. For example, the skin impedance detection can be set as the default detection state, that is, the impedance detection circuit 120 is turned on and the electrocardiogram detection circuit 130 is turned off. When it is necessary to switch to another state for electrocardiogram measurement, the impedance detection circuit 120 can be turned off and the electrocardiogram detection circuit 130 can be turned on through the control unit 140.

[0072] During the operation of the entire parameter detection device, the detection unit 110 can detect the electrical signal of the target object, and then transmit the electrical signal to the subsequent conductive circuit. If the conductive circuit is the impedance detection circuit 120, the electrical signal can be transmitted to the impedance detection circuit 120, and then the electrical signal is processed by the impedance detection circuit 120 to determine the wearing state of the parameter detection device; if the conductive circuit is the electrocardiogram detection circuit 130, the electrical signal can be transmitted to the electrocardiogram detection circuit 130, and then the electrical signal is processed by the electrocardiogram detection circuit 130 to obtain an electrocardiogram signal.

[0073] In the parameter detection device provided in the embodiment of the present application, the electrical signal of the target object can be detected by the detection unit; the on / off state of the impedance detection circuit and the electrocardiogram detection circuit can be controlled by the control unit; when the impedance detection circuit is in the on state, the electrical signal is processed by the impedance detection circuit to determine the wearing state of the parameter detection device; when the electrocardiogram detection circuit is in the on state, the electrical signal is processed by the electrocardiogram detection circuit to obtain the electrocardiogram signal. Among them, the switching of the impedance detection circuit and the electrocardiogram detection circuit can be realized by the control unit, so that the impedance detection circuit can be turned on when the skin impedance needs to be detected, and the electrocardiogram detection circuit can be turned on when the electrocardiogram signal needs to be detected. The two circuits share the detection unit and the control unit, which can improve the reuse degree of the circuit and reduce the material cost of the equipment.

[0074] Another specific structural connection relationship and function of the parameter detection device provided in the embodiment of the present application are explained in detail below.

[0075] Figure 2 For another structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 2 , the device also includes: a switching unit 150.

[0076] The switching unit 150 is respectively connected to the detection unit 110 , the control unit 140 , the impedance detection circuit 120 and the ECG detection circuit 130 ; the control unit 140 controls the on / off state of the impedance detection circuit 120 and the ECG detection circuit 130 by controlling the state of the switching unit 150 .

[0077] Optionally, the switching unit 150 may specifically be a switch component, which can adjust the on / off state of the impedance detection circuit 120 and the electrocardiogram detection circuit 130 when the control unit 140 gives a relevant control signal.

[0078] Among them, the control unit 140 can specifically generate a switching signal in response to the user's operation. For example, if the parameter detection device is applied to devices such as smart bracelets or watches, the user's triggering of the buttons of the device or the interactive controls on the interactive screen can be regarded as the user's operation. A switching signal can be generated based on the user's operation, and then the switching signal can be sent to the switching unit.

[0079] It should be noted that the switching signal can specifically be a signal for adjusting the on / off state of the impedance detection circuit 120 and the electrocardiograph detection circuit 130; for example: if there is a default on-state, the switching signal can be a signal for switching from the default on-state to another state; if there is no default on-state, the switching signal can specifically indicate turning on the impedance detection circuit 120 or turning on the electrocardiograph detection circuit 130.

[0080] After receiving the switching signal, the switching unit 150 may perform a corresponding change in the on / off state based on the instruction of the switching signal.

[0081] In a parameter detection device provided in an embodiment of the present application, the control unit can control the on / off state of the impedance detection circuit and the electrocardiogram detection circuit by controlling the state of the switching unit. By setting the switching unit, the on / off state conversion of the two circuits in the device can be realized more quickly and accurately, thereby improving the detection efficiency of the entire parameter detection device.

[0082] The specific structural relationship and related functions of the switching unit in the parameter detection device provided in the embodiment of the present application are explained in detail below.

[0083] Figure 3 For another structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 3 The switching unit 150 includes: a switching control chip 151 and a switching adjustment switch 152 .

[0084] The switching control chip 151 is respectively connected to the switching adjustment switch 152 and the control unit 140, and the switching adjustment switch 152 is respectively connected to the detection unit 110, the impedance detection circuit 120 and the electrocardiogram detection circuit 130; the switching control chip 151 is used to receive the switching signal sent by the control unit 140, and adjust the working state of the switching adjustment switch 152 based on the switching signal. The working state of the switching adjustment switch 152 includes: connecting the impedance detection circuit or connecting the electrocardiogram detection circuit.

[0085] The switching control chip 151 may include an input / output control port, and may receive a switching signal sent by the control unit 140 through the input / output control port.

[0086] The switching control chip 151 can directly control the switching of the switching adjustment switch 152, wherein the switching adjustment switch 152 can include the above-mentioned two working states. When the switching adjustment switch 152 is in the working state of connecting to the impedance detection circuit, the impedance detection circuit 120 can be connected to the detection unit 110 through the switching adjustment switch 152, thereby receiving the electrical signal of the target object detected by the detection unit 110; when the switching adjustment switch 152 is in the working state of connecting to the electrocardiogram detection circuit, the electrocardiogram detection circuit 130 can be connected to the detection unit 110 through the switching adjustment switch 152, thereby receiving the electrical signal of the target object detected by the detection unit 110.

[0087] Specifically, the switching adjustment switch 152 includes a double-pole double-throw switch.

[0088] Among them, the impedance detection circuit 120 and the ECG detection circuit 130 can both have two circuits connected to the switching adjustment switch 152, and can be controlled based on a double-pole double-throw switch. When the impedance detection circuit needs to be connected, both poles of the double-pole double-throw switch can be controlled to connect to the impedance detection circuit 120; accordingly, when the ECG detection circuit needs to be connected, both poles of the double-pole double-throw switch can be controlled to connect to the ECG detection circuit 130.

[0089] In a parameter detection device provided in an embodiment of the present application, a switching control chip can receive a switching signal sent by a control unit, and adjust the working state of the switching adjustment switch based on the switching signal. Based on the switching control chip and the switching adjustment switch, the on-off state conversion of the two circuits in the device can be realized more quickly and accurately, thereby improving the detection efficiency of the entire parameter detection device.

[0090] Another optional structural setting of the parameter detection device provided in the embodiment of the present application is explained in detail below.

[0091] Figure 4 For another structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 4 The parameter detection device also includes a data processing unit 160, which is connected to the impedance detection circuit 120 and the electrocardiogram detection circuit 130 respectively; the data processing unit 160 is used to determine the wearing state of the parameter detection device according to the output signal of the impedance detection circuit 120, and to determine the electrocardiogram signal according to the output signal of the electrocardiogram detection circuit 130.

[0092] It should be noted that the data processing unit 160 can specifically be a processor, such as: MUC (Microcontroller Unit) or other types of processors. In the actual structure, it can be set independently or integrated with the aforementioned control unit 140, and no specific limitation is made here.

[0093] The data processing unit 160 can receive the output electrical signals of the impedance detection circuit 120 and the electrocardiogram detection circuit 130 respectively, wherein the impedance detection circuit 120 and the electrocardiogram detection circuit 130 can both process the electrical signal of the target object detected by the detection unit 110 after inputting the electrical signal and obtain corresponding output. The specific implementation of determining the wearing state of the parameter detection device and determining the electrocardiogram signal can be achieved by the data processing unit 160.

[0094] In the parameter detection device provided in the embodiment of the present application, the data processing unit can be used to determine the wearing state of the parameter detection device according to the output signal of the impedance detection circuit, and to determine the electrocardiogram signal according to the output signal of the electrocardiogram detection circuit. The data processing unit can more accurately and quickly process the outputs of the impedance detection circuit and the electrocardiogram detection circuit, thereby obtaining the wearing state of the parameter detection device and the electrocardiogram signal, and the data processing unit can be used for processing, which can also improve the reuse degree of the parameter detection device.

[0095] Another specific structural relationship in the parameter detection device provided in the embodiment of the present application is explained in detail below.

[0096] Figure 5 For another structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 5 The data processing unit includes: a wearing determination module 161; the device also includes: a photoelectric sensing unit 170; the photoelectric sensing unit 170 is connected to the wearing determination module 161.

[0097] The wearing determination module 161 is used to determine the wearing state of the parameter detection device according to the electrical signal when the impedance detection circuit 120 is turned on, and the wearing state includes: normal wearing and abnormal wearing; the photoelectric sensing unit 170 is used to collect the photoplethysmography signal when the wearing state is normal wearing, and determine whether the parameter detection device is worn by a living body based on the photoplethysmography signal.

[0098] It should be noted that the wearing determination module 161 can be integrated with the control unit 140 in actual use, or can be separately provided, and no specific limitation is made here.

[0099] The photoelectric sensing unit 170 may be a photoelectric sensor, such as a PPG (Photoplethysmography) sensor, which can collect photoplethysmography signals, and can record changes in blood vessel volume during the cardiac cycle based on the intensity of reflected light absorbed by human blood and tissue, and calculate the heart rate from the obtained pulse waveform. The photoelectric sensing unit 170 can be used to determine whether the parameter detection device is worn by a living person by obtaining a photoplethysmography signal.

[0100] The wearing determination module 161 can specifically be a logic determination unit, which can determine the wearing status of the parameter detection device according to the received electrical signal. For example, it can determine whether the parameter detection device is worn normally or abnormally according to the size of the electrical signal. Since the human body resistance is usually within a fixed range, on this basis, the voltage value of the electrical signal will also be within the corresponding range. When the detected electrical signal is within the range, it can be determined that the parameter detection device is worn normally. Conversely, when the detected electrical signal is not within the range, it can be determined that the parameter detection device is worn abnormally.

[0101] In the actual working process, the wearing determination module 161 can first make a determination to determine the wearing state of the parameter detection device. When the parameter detection device is in a normal wearing state, the photoelectric sensing unit 170 can start working to collect the photoplethysmography signal to determine whether the parameter detection device is worn by a living body.

[0102] It should be noted that in order to further determine whether the parameter detection device is worn normally, a liveness determination may be performed when it is determined that the parameter detection device is worn normally to further determine the working condition of the parameter detection device.

[0103] If it is worn by a living body, it can be determined that the parameter detection device is worn and is in a normal wearing state; if it is not worn by a living body, it can be determined that the parameter detection device is not worn.

[0104] Among them, when the parameter detection device is worn and the wearing is abnormal, the wearing determination module can output prompt information to prompt the user that the parameter detection device is worn abnormally.

[0105] In addition, after acquiring the photoplethysmographic signal through the photoelectric sensing unit 170, the wearing status of the parameter detection device can also be determined again. If the wearing is abnormal, the photoplethysmographic signal needs to be acquired again; if the wearing is normal, the acquired photoplethysmographic signal can be recorded, and subsequent living wearing detection can be performed based on the photoplethysmographic signal.

[0106] The specific working process is as follows:

[0107] During the skin impedance detection process, the impedance detection circuit 120 can receive the electrical signal of the target object detected by the detection unit 110, and then the impedance detection circuit 120 can process the electrical signal to obtain an output impedance value, and the output impedance value can be transmitted to the data processing unit 160. The data processing unit 160 determines the specific skin impedance based on the output impedance value, and then can perform a wearing determination through the photoelectric sensor unit 170 and the wearing determination module 161, so as to determine whether the parameter detection device is worn normally and whether the target object is a living body.

[0108] During the ECG detection process, the ECG detection circuit 130 can receive the electrical signal of the target object detected by the detection unit 110, and then process the electrical signal to obtain an output voltage value, and transmit the output voltage value to the data processing unit 160. The data processing unit 160 determines the specific ECG signal based on the output voltage, and can output it in the form of an ECG or ECG data.

[0109] In a parameter detection device provided in an embodiment of the present application, when the impedance detection circuit is turned on, the wearing state of the parameter detection device can be determined according to the electrical signal by the wearing determination module, and the wearing state includes: normal wearing and abnormal wearing; when the wearing state is normal wearing, the photoelectric sensing unit collects the photoplethysmography signal, and determines whether the parameter detection device is worn by a living body based on the photoplethysmography signal. Among them, the wearing state of the parameter detection device can be determined more accurately by the wearing determination module and the photoelectric sensing unit, and corresponding prompt information can be issued when the wearing state is abnormal, so that the user can timely understand the working state of the parameter detection device during the use of the parameter detection device.

[0110] Another specific structural relationship of the impedance detection circuit in the parameter detection device provided in the embodiment of the present application is explained in detail below.

[0111] Figure 6 For another structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 6 The impedance detection circuit includes: a voltage follower 121; the impedance detection circuit outputs a signal to the data processing unit 160 through the voltage follower 121.

[0112] Optionally, the impedance detection circuit can specifically provide an output impedance value to the interface of the data processing unit 160 through the voltage follower 121, wherein, since the resistance in the entire circuit is relatively large, the impedance that can be input to the data processing unit 160 is limited, and an operational amplifier can be used to reduce the input impedance. Specifically, the output impedance value can be signal conditioned by the above-mentioned voltage follower 121 to reduce the output impedance of the impedance detection circuit, thereby performing corresponding protection on the circuit.

[0113] The specific structural relationship of the central electrostatic detection circuit in the parameter detection device provided in the embodiment of the present application is explained in detail below.

[0114] Figure 7 For another structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 7 The ECG detection circuit includes: a bidirectional two-wire synchronous serial bus 131; the ECG detection circuit outputs a signal to the data processing unit 160 through the bidirectional two-wire synchronous serial bus 131.

[0115] Optionally, the ECG detection circuit can specifically provide an output voltage value to the interface of the data processing unit 160 through the bidirectional two-wire synchronous serial bus 131, and before the output voltage, the differential signal can be internally filtered and amplified to output an amplified output signal, so that the data processing unit 160 determines the ECG signal based on the output signal.

[0116] It should be noted that the ECG signal may specifically be the ECG signal of the target object. If the target object is a user, the ECG signal of the user may be determined based on this method, and the ECG signal may be output in the form of an ECG or ECG data.

[0117] The bidirectional two-wire synchronous serial bus 131 may include a data line and a clock line, and may implement serial transmission of data.

[0118] In a parameter detection device provided in an embodiment of the present application, an impedance detection circuit can output a signal to a data processing unit through a voltage follower; an electrical detection circuit can output a signal to a data processing unit through a bidirectional two-wire synchronous serial bus. Outputting a signal to a data processing unit through a voltage follower or a bidirectional two-wire synchronous serial bus can make the output signal more meet the actual input requirements of the data processing unit, thereby realizing data processing more efficiently and quickly.

[0119] The overall structure of the parameter detection device provided in the embodiment of the present application is explained below.

[0120] Figure 8 For the overall structural diagram of the parameter detection device provided in the embodiment of the present application, please refer to Figure 8 , wherein the parameter detection device can be specifically applied to various wearable devices, such as smart bracelets, smart watches, etc.

[0121] Figure 8 The control unit 140 and the data processing unit 160 are shown as two different structures. In an actual product structure, the two can also be set as the same structure, and no specific limitation is made here.

[0122] Figure 8 The figure shows the structural relationship of the entire parameter detection device when all the above feasible schemes are included. The specific implementation process of performing impedance detection and electrocardiogram detection based on this structure is explained in detail below.

[0123] During the electrocardiogram detection process, the parameter detection device needs to form a circuit with the heart, and the other hand needs to touch the detection unit 110 while wearing the device to form a circuit with the heart.

[0124] Under normal circumstances, skin impedance can be detected by default, and only when electrocardiogram signals need to be detected can the control unit 140 perform corresponding switching.

[0125] In the process of detecting skin impedance, it can be measured by the resistance voltage divider in the impedance detection circuit. Since skin resistance is a dynamically changing process, a threshold value needs to be set. For example, if it is less than 1KΩ, it can be considered to be in contact with metal, etc., and if it is greater than 10MΩ, it is also considered that there is a problem with the contact, that is, the impedance between 1KΩ and 10MΩ can be used as the impedance when worn normally, and other impedance values ​​can be considered to be abnormal. In addition, because the resistance of the detection loop is too large, the input impedance of the data processing unit 160 is limited, and an operational amplifier is required for signal conditioning. The output impedance can be reduced by the voltage follower 121. When there is an object with an impedance close to that of human skin contacting the detection unit 110, it may be accidentally touched. Liveness detection can be performed based on the wearing determination module 161 and the photoelectric sensor unit 170 to further confirm whether it is worn normally.

[0126] The collected photoplethysmography signals are considered valid only when they are worn normally, thereby improving the accuracy and robustness of signal collection.

[0127] In addition, compared with capacitance detection, the capacitance is more susceptible to interference factors when the impedance of the resistor is used for detection. In the embodiment of the present application, the impedance detection is performed by using resistor voltage division, which is less affected by environmental factors.

[0128] The specific implementation process of the application method based on the parameter detection device provided in the embodiment of the present application is explained in detail below.

[0129] Fig. 9 For a flow chart of the parameter detection method provided in the embodiment of the present application, please refer to Fig. 9 , a parameter detection method is applied to a parameter detection device, the parameter detection device includes a detection unit, an impedance detection circuit, an electrocardiogram detection circuit and a control unit, the method includes:

[0130] S910: Controlling the on / off status of the impedance detection circuit and the electrocardiogram detection circuit through the control unit.

[0131] It should be noted that when controlling the on / off state of the impedance detection circuit and the electrocardiogram detection circuit, it can be in response to the user's trigger operation to achieve the on / off state of the corresponding circuit; in addition, it can also be based on a pre-configuration, in a certain working mode, working time or after receiving a certain type of signal, to achieve the control of the on / off state of the impedance detection circuit and the electrocardiogram detection circuit, and the specific settings can be made according to the actual form of the control unit.

[0132] S920: When the impedance detection circuit is in the on state, the electrical signal of the target object detected by the detection unit is processed by the impedance detection circuit to determine the wearing state of the parameter detection device.

[0133] Optionally, when the impedance detection circuit is in an on state, the ECG detection circuit is in an off state, and the electrical signal of the target object detected by the detection unit can be processed by the impedance detection circuit to determine the wearing state of the parameter detection device.

[0134] S930: When the ECG detection circuit is in the on state, the electrical signal is processed by the ECG detection circuit to obtain an ECG signal.

[0135] When the ECG detection circuit is in the on state, the impedance detection circuit is in the off state, and the electrical signal of the target object detected by the detection unit can be processed by the ECG detection circuit to obtain an ECG signal.

[0136] In the parameter detection method provided in the embodiment of the present application, the electrical signal of the target object can be detected by the detection unit; the on / off state of the impedance detection circuit and the electrocardiogram detection circuit can be controlled by the control unit; when the impedance detection circuit is in the on state, the electrical signal is processed by the impedance detection circuit to determine the wearing state of the parameter detection device; when the electrocardiogram detection circuit is in the on state, the electrical signal is processed by the electrocardiogram detection circuit to obtain the electrocardiogram signal. Among them, the switching of the impedance detection circuit and the electrocardiogram detection circuit can be realized by the control unit, so that the impedance detection circuit can be turned on when the skin impedance needs to be detected, and the electrocardiogram detection circuit can be turned on when the electrocardiogram signal needs to be detected. The two circuits share the detection unit and the control unit, which can improve the reuse degree of the circuit and reduce the material cost of the equipment.

[0137] In some embodiments, after processing the electrical signal of the target object detected by the detection unit through the impedance detection circuit to determine the wearing state of the parameter detection device, the method also includes: if the wearing state is normal, collecting the photoplethysmography signal through the impedance detection circuit, and determining whether the parameter detection device is worn by a living body based on the photoplethysmography signal.

[0138] In some embodiments, the device also includes: a switching unit, which controls the on and off states of the impedance detection circuit and the electrocardiogram detection circuit through a control unit, including: controlling the state of the switching unit through the control unit; and controlling the on and off states of the impedance detection circuit and the electrocardiogram detection circuit based on the state of the switching unit.

[0139] It should be understood that, although the steps in the above-mentioned flowcharts are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a part of the steps in the above-mentioned flowcharts may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0140] It should be noted that in the embodiment of the present application, if the above method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiment of the present application can be essentially or partly embodied in the form of a software product that contributes to the relevant technology. The computer software product is stored in a storage medium, including several instructions to enable an electronic device to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiment of the present application is not limited to any specific combination of hardware and software.

[0141] Fig.10 For a flow chart of the computer device provided in the embodiment of the present application, please refer to Fig.10 In another aspect of an embodiment of the present application, a computer device is provided, including a memory 210 and a processor 220, wherein the memory 210 stores a computer program that can be run on the processor 220, and the processor 220 implements the above-mentioned parameter detection method when executing the program.

[0142] The embodiment of the present application provides a computer device, which may be a server, and its internal structure diagram may be as follows: Fig.10As shown. The computer device includes a processor 220, a memory 210 and a network interface 230 connected via a system bus 240. Among them, the processor 220 of the computer device is used to provide computing and control capabilities. The memory 210 of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data. The network interface 230 of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, the above method is implemented.

[0143] An embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps in the method provided in the above embodiment are implemented.

[0144] An embodiment of the present application provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the steps of the method provided in the above method embodiment.

[0145] Those skilled in the art will understand that Fig.10 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0146] It should be noted here that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium, storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0147] Fig.11 For a schematic diagram of the structure of the wearable device provided in the embodiment of the present application, please refer to Fig.11 According to another aspect of the embodiment of the present application, a wearable device 10 is provided, which includes a parameter detection device.

[0148] Among them, the wearable device 10 can specifically be a smart bracelet or watch and other devices. The detection unit of the parameter detection device can be set on the side of the wearable device that contacts the human skin, such as the bottom of the smart bracelet. In addition, the wearable device can also be provided with a display, such as an interactive touch screen. The user can switch between impedance detection and electrocardiogram detection by interacting with relevant controls in the touch screen, and the results obtained by the impedance detection and the results obtained by the electrocardiogram detection can also be displayed through the display.

[0149] In addition, when prompt information and other content need to be output, it can also be displayed through the display.

[0150] It should be noted that the wearable device 10 can also be connected to other terminal devices for communication, such as mobile phones, computers, etc.; the results of impedance detection and the results of electrocardiogram detection can be sent to the terminal device; or, switching between impedance detection and electrocardiogram detection can be implemented based on the terminal device.

[0151] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in one embodiment" or "in some embodiments" appearing throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above description of each embodiment tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other. For the sake of brevity, this article will not repeat them.

[0152] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0153] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0154] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as: multiple modules or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or modules can be electrical, mechanical or other forms.

[0155] The modules described above as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules; they may be located in one place or distributed on multiple network units; some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0156] In addition, all functional modules in the embodiments of the present application may be integrated into one processing unit, or each module may be a separate unit, or two or more modules may be integrated into one unit; the above-mentioned integrated modules may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0157] A person skilled in the art can understand that all or part of the steps of implementing the above method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, etc., various media that can store program codes.

[0158] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application can essentially or in other words, the part that contributes to the relevant technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling an electronic device to execute all or part of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0159] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0160] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0161] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0162] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A parameter detection device, characterized in that: include: A detection unit, an impedance detection circuit, an ECG detection circuit and a control unit, wherein the detection unit is connected to the impedance detection circuit and the ECG detection circuit respectively, and the control unit is connected to the impedance detection circuit and the ECG detection circuit respectively, wherein: The detection unit is used to detect the electrical signal of the target object; The control unit is used to control the on / off state of the impedance detection circuit and the electrocardiogram detection circuit; When the impedance detection circuit is in the on state, the electrical signal is processed by the impedance detection circuit to determine the wearing state of the parameter detection device; when the electrocardiogram detection circuit is in the on state, the electrical signal is processed by the electrocardiogram detection circuit to obtain an electrocardiogram signal.

2. The parameter detection device according to claim 1, characterized in that: The device further comprises: a switching unit; The switching unit is respectively connected to the detection unit, the control unit, the impedance detection circuit and the electrocardiogram detection circuit; The control unit controls the on / off states of the impedance detection circuit and the electrocardiogram detection circuit by controlling the state of the switching unit.

3. The parameter detection device according to claim 2, characterized in that: The switching unit includes: a switching control chip and a switching adjustment switch; The switching control chip is connected to the switching adjustment switch and the control unit respectively, and the switching adjustment switch is connected to the detection unit, the impedance detection circuit and the electrocardiogram detection circuit respectively; The switching control chip is used to receive the switching signal sent by the control unit, and adjust the working state of the switching adjustment switch based on the switching signal. The working state of the switching adjustment switch includes: connecting the impedance detection circuit or connecting the electrocardiogram detection circuit.

4. The parameter detection device according to claim 1, characterized in that: The detection unit includes at least two ECG electrodes.

5. The parameter detection device according to claim 3, characterized in that: The switching adjustment switch includes a double-pole double-throw switch.

6. The parameter detection device according to any one of claims 1 to 5, characterized in that: The parameter detection device further comprises a data processing unit, and the data processing unit is respectively connected to the impedance detection circuit and the electrocardiogram detection circuit; The data processing unit is used to determine the wearing state of the parameter detection device according to the output signal of the impedance detection circuit, and to determine the electrocardiogram signal according to the output signal of the electrocardiogram detection circuit.

7. The parameter detection device according to claim 6, characterized in that: The data processing unit includes: a wearing determination module; the device also includes: a photoelectric sensing unit; The photoelectric sensing unit is connected to the wearing determination module; The wearing determination module is used to determine the wearing state of the parameter detection device according to the electrical signal when the impedance detection circuit is turned on, and the wearing state includes: normal wearing and abnormal wearing; The photoelectric sensing unit is used to collect a photoplethysmographic signal when the wearing state is normal wearing, and determine whether the parameter detection device is worn by a living body based on the photoplethysmographic signal.

8. The parameter detection device according to claim 6, characterized in that: The impedance detection circuit comprises: a voltage follower; The impedance detection circuit outputs a signal to the data processing unit through the voltage follower.

9. The parameter detection device according to claim 6, characterized in that: The electrocardiogram detection circuit comprises: a bidirectional two-wire synchronous serial bus; The electrocardiogram detection circuit outputs a signal to the data processing unit via the bidirectional two-wire synchronous serial bus.

10. A parameter detection method, characterized in that: Applied to a parameter detection device, the parameter detection device includes a detection unit, an impedance detection circuit, an electrocardiogram detection circuit and a control unit, and the method includes: Controlling the on / off states of the impedance detection circuit and the electrocardiogram detection circuit by the control unit; When the impedance detection circuit is in a conducting state, the electrical signal of the target object detected by the detection unit is processed by the impedance detection circuit to determine the wearing state of the parameter detection device; When the electrocardiogram detection circuit is in a conducting state, the electrical signal is processed by the electrocardiogram detection circuit to obtain an electrocardiogram signal.

11. The parameter detection method according to claim 10, characterized in that: After the electrical signal of the target object detected by the detection unit is processed by the impedance detection circuit to determine the wearing state of the parameter detection device, the method further includes: If the wearing state is normal wearing, a photoplethysmography signal is collected by the impedance detection circuit, and based on the photoplethysmography signal, it is determined whether the parameter detection device is worn by a living body.

12. The parameter detection method according to claim 10, characterized in that: The device further includes: a switching unit, wherein the control unit controls the on / off state of the impedance detection circuit and the electrocardiogram detection circuit, including: Controlling the state of the switching unit by the control unit; The on / off states of the impedance detection circuit and the electrocardiogram detection circuit are controlled based on the state of the switching unit.

13. A computer device comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, wherein: When the processor executes the program, the steps of the method according to any one of claims 10 to 12 are implemented.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 10 to 12 is implemented.

15. A wearable device, characterized in that: It comprises a parameter detection device as described in any one of claims 1 to 9.

Images