Electronic device and control method

Abstract

The present application discloses an electronic device and a control method, belonging to the field of electronics. The electronic device includes: a first contact electrode, a second contact electrode, a third contact electrode, a charging circuit, a capacitor bank, an electrocardiogram measurement circuit, and a control module; when the first contact electrode and the second contact electrode are connected to an external power supply, the control module controls the charging circuit to conduct, and the electronic device is in a charging state; when there is a voltage on the third contact electrode, the control module controls the electrocardiogram measurement circuit to conduct and controls the charging circuit to turn off, and the electronic device obtains the electrocardiogram of the user through the first contact electrode and the third contact electrode. By directly using the charging electrode as the ECG measurement electrode and separating the power DC signal required by the charging circuit and the human AC signal required by the ECG measurement through the capacitor bank without mutual interference, the implementation of the solution is simple, and the hardware and software costs are relatively low. By reusing the charging electrode, the complexity of the structural design and the waterproof design is reduced.

Description

Technical Field

[0001] This application belongs to the field of electronics, and particularly relates to an electronic device and a control method. Background Art

[0002] With the continuous improvement of people's living conditions and the deepening of health awareness, more and more people pay attention to physical monitoring. Currently, smart products featuring health monitoring functions are becoming increasingly popular. Common examples include smart bracelets / watches, etc., which are equipped with heart rate and blood oxygen detection capabilities. However, the heart rate and blood oxygen measurement functions cannot directly reflect the heart health condition. Electrocardiogram (ECG), on the other hand, can directly reflect heart health by detecting the polarization processes of atrial and ventricular contractions and relaxations. Therefore, the demand for electronic devices with ECG functions is increasing day by day.

[0003] Current smart watches have four openings on the side opposite to the display screen, two metal contacts for charging and two conductive electrodes for ECG measurement. Having four openings has a certain impact on the waterproof performance of the device, affects the appearance of the device, and the four contacts occupy a relatively large space, increasing the cost of the device. Summary of the Invention

[0004] Embodiments of this application provide an electronic device and a control method, which can solve the problems in the prior art that opening four holes on the electronic device affects the waterproof performance, occupies a relatively large space, and increases the cost.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an electronic device is provided, including: a first contact electrode, a second contact electrode, a third contact electrode, a charging circuit, a capacitor bank, an electrocardiogram measurement circuit, and a control module;

[0007] Both the first contact electrode and the second contact electrode are connected to the first end of the charging circuit, and the second end of the charging circuit is connected to the control module;

[0008] The capacitor bank includes a first capacitor connected to the first contact electrode, a second capacitor connected to the second contact electrode, and a third capacitor connected to the third contact electrode;

[0009] The first contact electrode, the second contact electrode, and the third contact electrode are respectively connected to the input end of the electrocardiogram measurement circuit through the first capacitor, the second capacitor, and the third capacitor, and the output end of the electrocardiogram measurement circuit is connected to the control module;

[0010] When the first contact electrode and the second contact electrode are connected to an external power supply, the control module controls the charging circuit to conduct, and the electronic device is in a charging state;

[0011] When there is a voltage on the third contact electrode, the control module controls the electrocardiogram measurement circuit to conduct and controls the charging circuit to turn off, and the electronic device obtains the electrocardiogram of the user through the first contact electrode and the third contact electrode.

[0012] In a second aspect, a control method is provided, which is applied to the electronic device described in the first aspect. The method includes:

[0013] When the first contact electrode and the second contact electrode are connected to an external power supply, control the charging circuit to conduct, and charge the electronic device through the first contact electrode and the second contact electrode;

[0014] When there is a voltage on the third contact electrode, control the charging circuit to turn off and control the electrocardiogram measurement circuit to conduct, and obtain the electrocardiogram of the user through the first contact electrode and the third contact electrode.

[0015] In a third aspect, an electronic device is provided. The electronic device includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0016] In a fourth aspect, a readable storage medium is provided. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the second aspect are implemented.

[0017] In an embodiment of the present application, an electronic device is disclosed. The electronic device includes a first contact electrode, a second contact electrode, a third contact electrode, a charging circuit, a capacitor bank, an electrocardiogram (ECG) measurement circuit, and a control module. The first contact electrode and the second contact electrode are both connected to the first end of the charging circuit, and the second end of the charging circuit is connected to the control module. The capacitor bank includes a first capacitor connected to the first contact electrode, a second capacitor connected to the second contact electrode, and a third capacitor connected to the third contact electrode. The first contact electrode, the second contact electrode, and the third contact electrode are respectively connected to the input end of the ECG measurement circuit through the first capacitor, the second capacitor, and the third capacitor. The output end of the ECG measurement circuit is connected to the control module. When the first contact electrode and the second contact electrode are connected to an external power supply, the control module controls the charging circuit to conduct, and the electronic device is in a charging state. When there is a voltage on the third contact electrode, the control module controls the ECG measurement circuit to conduct and controls the charging circuit to turn off, and the electronic device obtains the user's ECG through the first contact electrode and the third contact electrode. In the embodiment of the present application, the charging electrode is directly used as the ECG measurement electrode, and the power DC signal required by the charging circuit and the human AC signal required by the ECG measurement are separated and do not interfere with each other through the capacitor bank. The implementation of the solution is simple, and the hardware and software costs are relatively low. By reusing the charging electrode, the complexity of the structural design, waterproof design, as well as the structural process and material costs are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0019] Figure 1 is a structural block diagram of an electronic device provided by an embodiment of the present application;

[0020] Figure 2 is a circuit schematic diagram of an electronic device provided by an embodiment of the present application;

[0021] Figure 3 is a flowchart of a control method provided by an embodiment of the present application;

[0022] Figure 4 is a structural schematic diagram of an electronic device provided by an embodiment of the present application;

[0023] Figure 5 is a hardware structural schematic diagram of an electronic device provided by an embodiment of the present application.

[0024] Among them, 10 - the first contact electrode; 20 - the second contact electrode; 30 - the third contact electrode; 40 - the capacitor bank; 50 - the charging circuit; 60 - the electrocardiogram measurement circuit; 70 - the control module. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0026] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0027] Next, in conjunction with the accompanying drawings, the electronic device and the control method provided in the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0028] As Figure 1-2 shown, the electronic device may include: a first contact electrode 10, a second contact electrode 20, a third contact electrode 30, a charging circuit 50, a capacitor bank 40, an electrocardiogram measurement circuit 60, and a control module 70.

[0029] Specifically, both the first contact electrode 10 and the second contact electrode 20 are connected to the first end of the charging circuit 50, and the second end of the charging circuit 50 is connected to the control module 70; the capacitor bank 40 includes a first capacitor connected to the first contact electrode 10, a second capacitor connected to the second contact electrode 20, and a third capacitor connected to the third contact electrode 30; the first contact electrode 10, the second contact electrode 20, and the third contact electrode 30 are respectively connected to the input end of the electrocardiogram measurement circuit 60 through the first capacitor, the second capacitor, and the third capacitor, and the output end of the electrocardiogram measurement circuit 60 is connected to the control module 70; when the first contact electrode 10 and the second contact electrode 20 are connected to an external power supply, the control module 70 controls the charging circuit to conduct, and the electronic device is in a charging state; when there is a voltage on the third contact electrode 30, the control module 70 controls the electrocardiogram measurement circuit 60 to conduct and controls the charging circuit 50 to be turned off, and the electronic device obtains the electrocardiogram of the user through the first contact electrode 10 and the third contact electrode 30.

[0030] That is, by reusing the charging electrode as the conductive electrode of the electrocardiogram measurement circuit 60, the number of openings on the electronic device can be reduced, making the appearance of the electronic device more beautiful and the waterproof performance better.

[0031] Among them, the capacitor bank 40 is used to isolate the DC power signal required by the charging circuit 50.

[0032] In the embodiment of the present application, the electronic device includes a first contact electrode 10, a second contact electrode 20, a third contact electrode 30, a charging circuit 50, a capacitor bank 40, an electrocardiogram measurement circuit 60, and a control module 70. The first contact electrode 10 and the second contact electrode 20 are both connected to the first end of the charging circuit 50, and the second end of the charging circuit 50 is connected to the control module 70. The capacitor bank 40 includes a first capacitor connected to the first contact electrode 10, a second capacitor connected to the second contact electrode 20, and a third capacitor connected to the third contact electrode 30. The first contact electrode 10, the second contact electrode 20, and the third contact electrode 30 are respectively connected to the input end of the electrocardiogram measurement circuit 60 through the first capacitor, the second capacitor, and the third capacitor. The output end of the electrocardiogram measurement circuit 60 is connected to the control module 70. When the first contact electrode 10 and the second contact electrode 20 are connected to an external power supply, the control module 70 controls the charging circuit 50 to conduct, and the electronic device is in a charging state; when there is a voltage on the third contact electrode 30, the control module 70 controls the electrocardiogram measurement circuit 60 to conduct and controls the charging circuit 50 to turn off, and the electronic device obtains the electrocardiogram of the user through the first contact electrode 10 and the third contact electrode 30. In the embodiment of the present application, the charging electrode is directly used as the electrocardiogram measurement electrode, and the capacitor bank 40 is used to separate the DC power signal required by the charging circuit 50 and the human AC signal required for electrocardiogram measurement from interfering with each other. The implementation of the solution is simple, and the hardware and software costs are relatively low. By reusing the charging electrode, the complexity of the structural design and waterproof design, as well as the structural process and material costs, are reduced.

[0033] In the embodiment of the present application, a capacitor is provided between the electrocardiogram measurement circuit 60 and each electrode, which can separate AC from DC and prevent the high-voltage DC from damaging the electrocardiogram measurement circuit 60. In this way, the original charging electrode of the electronic device can be reused as the conductive electrode for measuring ECG, making the circuit structure simple and the appearance concise.

[0034] In a possible implementation manner of the present application, the electrocardiogram measurement circuit 60 (ECG measurement module) may include: an electrocardiogram measurement module and an impedance detection module.

[0035] Specifically, the impedance detection module is used to detect whether the electronic device is in contact with the user; the electrocardiogram measurement module is used to measure the electrocardiogram when the electronic device is in contact with the user.

[0036] In the embodiments of the present application, the ECG measurement module may use a chip of model AFE49X0, or other chips, which are not specifically limited in the embodiments of the present application. The impedance detection module may determine whether the electrode is in contact with the human body according to the impedance in the circuit. For example, it may infer whether the electrode of the electronic device is in contact with the user by measuring the impedance between the first contact electrode 10 and the second contact electrode 20.

[0037] In a possible implementation manner of the present application, the charging circuit 50 may be a charging chip, which may include a power input, a chip enable input, a battery temperature input, a charging power output (connected to the battery), a charging status output, etc. The charging chip will output different charging status signals according to the power input and the battery charging status, including status indications such as power access, charging, and battery full. The charging circuit 50 may send the above indication signals to the control module 70, and the control module 70 controls the charging circuit 50 according to the above indication signals.

[0038] Specifically, the charging circuit 50 may include: a charging module, a battery temperature detection module, a charging status detection module, and a battery module.

[0039] Among them, the temperature detection module is used to detect the temperature of the battery module; the charging status detection module is used to detect whether the charging circuit is connected to an external power source and the power of the battery module; the charging module is used to charge the battery module according to the temperature of the battery module and the power of the battery module.

[0040] In a possible implementation manner of the present application, the electronic device may further include: an interaction module.

[0041] Specifically, the interaction module is connected to the control module 70, and the interaction module is used to interact with the outside world.

[0042] For example, it may receive an indication signal to start ECG measurement of this electronic device or other electronic devices.

[0043] Among them, the interaction module may be a UI interface (User Interface), and when the user selects to enable ECG measurement, the control module 70 receives the indication signal, then it may turn on the electrocardiogram measurement circuit 60 and measure the user's ECG through the first contact electrode 10 and the third contact electrode 30.

[0044] Specifically, the charging process of the electronic device requires that the electronic device be placed on a charging power source so that the power electrode is electrically connected to the charging contact for charging, and ECG measurement requires the user to closely contact the two electrodes through two parts of the body, such as the left and right hands, to achieve user ECG measurement. From the actual use scenario, the charging scenario and the ECG measurement cannot exist at the same time, but the circuit can work at the same time. Therefore, the control module 70 in the embodiment of the present application can control the charging circuit 50 and the electrocardiogram measurement circuit 60 according to the charging state of the electronic device, the ECG measurement state, etc. When both are not in use, both are turned off to achieve a low power consumption state of the electronic device and save resources.

[0045] Optionally, the electronic device may include a smart watch, a mobile phone, headphones or smart glasses.

[0046] Furthermore, the electronic device is a smart watch, the first contact electrode 10 and the second contact electrode 20 are arranged on a side of the smart watch facing the user, and the third contact electrode 30 is arranged on the periphery of the smart watch.

[0047] In the embodiment of the present application, the first contact electrode 10 and the second contact electrode 20 are arranged on the first side of the smart watch facing the user, that is, the side of the smart watch away from the display side. This can facilitate the charging of the smart watch. When measuring the user's ECG, one electrode can also be in contact with the user through the user's wearing. The third contact electrode 30 is arranged on the periphery of the smart watch, which can facilitate the user to contact the electrode when the user measures the ECG, thereby realizing ECG measurement.

[0048] When the electronic device is other devices, the location of the electrodes can be determined according to the type of the electronic device, and the embodiments of the present application will not list them one by one.

[0049] The present application also provides a control method, which is applied to the electronic device provided in any of the above embodiments. Figure 3 As shown, the control method may include: the contents shown in step S301 to step S302.

[0050] In step S301, when the first contact electrode and the second contact electrode are connected to an external power source, the charging circuit is controlled to be turned on, and the electronic device is charged through the first contact electrode and the second contact electrode.

[0051] In step S302, when there is a voltage at the third contact electrode, the charging circuit is controlled to be turned off, and the electrocardiogram measurement circuit is controlled to be turned on, and the electrocardiogram of the user is obtained through the first contact electrode and the third contact electrode.

[0052] In an embodiment of the present application, first, when the first contact electrode and the second contact electrode are connected to an external power supply, the charging circuit is controlled to conduct, and the electronic device is charged through the first contact electrode and the second contact electrode. When there is a voltage on the third contact electrode, the charging circuit is controlled to turn off, and the electrocardiogram measurement circuit is controlled to conduct, and the electrocardiogram of the user is obtained through the first contact electrode and the third contact electrode. In the embodiment of the present application, the charging electrode is directly used as the ECG measurement electrode, and the power DC signal required by the charging circuit and the human AC signal required for ECG measurement are separated and do not interfere with each other through a capacitor bank. The implementation of the solution is simple, and the hardware and software costs are relatively low. By reusing the charging electrode, the complexity of the structural design, waterproof design, and the structural process and material costs are reduced.

[0053] Optionally, when there is a voltage on the third contact electrode, controlling the charging circuit to turn off and controlling the electrocardiogram measurement circuit to conduct, and obtaining the electrocardiogram of the user through the first contact electrode and the third contact electrode may include the following steps.

[0054] When there is a voltage on the third contact electrode, determine whether the electronic device is in a state of contacting the user; when the electronic device is in a state of contacting the user, measure the electrocardiogram of the user through the first contact electrode and the third contact electrode.

[0055] In an embodiment of the present application, when there is a voltage on the third contact electrode, determine whether the electronic device is in a state of contacting the user, and at this time, measure the electrocardiogram of the user through the first contact electrode and the third contact electrode. By detecting the voltage of the third contact electrode, it is judged whether the electronic device is in a state of contacting the user, so as to avoid the situation that the user does not contact the electrode, or does not wear a wearable device such as a smart watch or a smart bracelet, resulting in inability to measure or incorrect measurement results.

[0056] In a possible implementation manner of the present application, before controlling the charging circuit to conduct and charging the electronic device through the first contact electrode and the second contact electrode, the method may further include: detecting the power of the battery module of the electronic device; when the power is less than a preset power, controlling the charging circuit to conduct.

[0057] That is, when the first contact electrode and the second contact electrode are connected to an external power supply, first detect the power of the battery module of the electronic device. If the detected power is less than the preset power, control the charging circuit to conduct to charge the electronic device; if it is not less than, do not continue charging. By the above method, the battery module can be protected to avoid continuous charging when the power is sufficient, which may damage the battery.

[0058] In a possible implementation manner of the present application, the control method may further include: when neither the first contact electrode nor the second contact electrode is connected to an external power source and there is no voltage on the third contact electrode, controlling both the charging circuit and the electrocardiogram measurement circuit to be turned off.

[0059] That is, when not charging and not measuring ECG, the two circuits can be turned off, which can reduce power consumption and save resources.

[0060] Optionally, as Figure 4 shown, an embodiment of the present application further provides an electronic device 400, including a processor 401, a memory 402, a program or instruction stored on the memory 402 and executable on the processor 401. When the program or instruction is executed by the processor 401, it implements each process of the above control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0061] It should be noted that the electronic device in the embodiment of the present application includes the above-mentioned mobile electronic device and non-mobile electronic device.

[0062] Figure 5 A schematic hardware structure diagram of an electronic device for implementing each embodiment of the present application

[0063] The electronic device 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc.

[0064] Those skilled in the art can understand that the electronic device 100 may further include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 5 The electronic device structure shown in does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0065] Among them, the processor 110 can be used to control the charging circuit to conduct when the first contact electrode and the second contact electrode are connected to an external power source, and charge the electronic device through the first contact electrode and the second contact electrode; when there is a voltage on the third contact electrode, control the charging circuit to be turned off, and control the electrocardiogram measurement circuit to conduct, and obtain the electrocardiogram of the user through the first contact electrode and the third contact electrode.

[0066] In an embodiment of the present application, first, when the first contact electrode and the second contact electrode are connected to an external power supply, the charging circuit is controlled to conduct, and the electronic device is charged through the first contact electrode and the second contact electrode. When there is a voltage on the third contact electrode, the charging circuit is controlled to turn off, and the electrocardiogram measurement circuit is controlled to conduct, and the electrocardiogram of the user is acquired through the first contact electrode and the third contact electrode. In the embodiment of the present application, the charging electrode is directly used as the ECG measurement electrode, and the power DC signal required by the charging circuit and the human AC signal required by the ECG measurement are separated and do not interfere with each other through a capacitor bank. The implementation of the solution is simple, and the hardware and software costs are relatively low. By reusing the charging electrode, the complexity of the structural design and waterproof design, as well as the structural process and material costs, are reduced.

[0067] Optionally, the processor 110 may further be configured to determine whether the electronic device is in a state of contacting the user when there is a voltage on the third contact electrode; and when the electronic device is in a state of contacting the user, measure the electrocardiogram of the user through the first contact electrode and the third contact electrode.

[0068] Optionally, the processor 110 may further be configured to detect the power of the battery module of the electronic device; and when the power is less than a preset power, control the charging circuit to conduct.

[0069] Optionally, the processor 110 may further be configured to control both the charging circuit and the electrocardiogram measurement circuit to turn off when neither the first contact electrode nor the second contact electrode is connected to an external power supply and there is no voltage on the third contact electrode.

[0070] It should be understood that in the embodiments of the present application, the input unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042. The graphics processor 1041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light-emitting diode, etc. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. The other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here. The memory 109 may be used to store software programs and various data, including but not limited to application programs and operating systems. The processor 110 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communications. It can be understood that the above-mentioned modem processor may not be integrated into the processor 110.

[0071] The embodiments of the present application further provide a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it implements each process of the above control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0072] Among them, the processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disc, etc.

[0073] The embodiments of the present application further provide a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instruction to implement each process of the above control method embodiments and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0074] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0075] It should be noted that in this text, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0076] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to enable a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of the present application.

[0077] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. An electronic device, characterized in that, it includes: a first contact electrode, a second contact electrode, a third contact electrode, a charging circuit, a capacitor bank, an electrocardiogram measurement circuit, and a control module; both the first contact electrode and the second contact electrode are connected to the first end of the charging circuit, and the second end of the charging circuit is connected to the control module; the capacitor bank includes a first capacitor connected to the first contact electrode, a second capacitor connected to the second contact electrode, and a third capacitor connected to the third contact electrode; the first contact electrode, the second contact electrode, and the third contact electrode are respectively connected to the input end of the electrocardiogram measurement circuit through the first capacitor, the second capacitor, and the third capacitor, the output end of the electrocardiogram measurement circuit is connected to the control module, and the capacitor bank is used to separate the power DC signal required by the charging circuit and the human AC signal required by the electrocardiogram measurement circuit; when the first contact electrode and the second contact electrode are connected to an external power source, the control module controls the charging circuit to conduct, and the electronic device is in a charging state; when there is a voltage on the third contact electrode, the control module controls the electrocardiogram measurement circuit to conduct and controls the charging circuit to turn off, and the electronic device obtains the electrocardiogram of the user through the first contact electrode and the third contact electrode.

2. The electronic device according to claim 1, characterized in that, the electrocardiogram measurement circuit includes: an electrocardiogram measurement module and an impedance detection module; the impedance detection module is used to detect whether the electronic device is in a state of contacting the user; the electrocardiogram measurement module is used to measure the electrocardiogram when the electronic device is in a state of contacting the user.

3. The electronic device according to claim 1, characterized in that, the charging circuit includes: a charging module, a battery temperature detection module, a charging state detection module, and a battery module; the temperature detection module is used to detect the temperature of the battery module; the charging state detection module is used to detect whether the charging circuit is connected to an external power source and the power of the battery module; the charging module is used to charge the battery module according to the temperature of the battery module and the power of the battery module.

4. The electronic device according to claim 1, characterized in that, the electronic device further includes: an interaction module, the interaction module is connected to the control module, and the interaction module is used to interact with the outside world.

5. A control method, applied to the electronic device according to any one of claims 1-4, characterized in that, it includes: when the first contact electrode and the second contact electrode are connected to an external power source, controlling the charging circuit to conduct, and charging the electronic device through the first contact electrode and the second contact electrode; when there is a voltage on the third contact electrode, controlling the charging circuit to turn off and controlling the electrocardiogram measurement circuit to conduct, and obtaining the electrocardiogram of the user through the first contact electrode and the third contact electrode.

6. The method according to claim 5, characterized in that, When there is a voltage on the third contact electrode, controlling the charging circuit to be turned off and controlling the electrocardiogram measurement circuit to be turned on, and measuring the electrocardiogram of the user through the first contact electrode and the third contact electrode, includes: When there is a voltage on the third contact electrode, determining whether the electronic device is in contact with the user; When the electronic device is in contact with the user, measuring the electrocardiogram of the user through the first contact electrode and the third contact electrode.

7. The method according to claim 5, wherein, Before controlling the charging circuit to be turned on and charging the electronic device through the first contact electrode and the second contact electrode, the method further includes: Detecting the power of the battery module of the electronic device; When the power is less than a preset power, controlling the charging circuit to be turned on.

8. The method according to claim 5, wherein, The method further includes: When neither the first contact electrode nor the second contact electrode is connected to an external power source and there is no voltage on the third contact electrode, controlling both the charging circuit and the electrocardiogram measurement circuit to be turned off.

9. An electronic device, wherein, including: A processor, a memory, and a program or instruction stored on the memory and executable on the processor, and when the program or instruction is executed by the processor, it implements the steps of the method according to any one of claims 5-8.

10. A readable storage medium, wherein, A program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, it implements the steps of the method according to any one of claims 5-8.

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