阅读说明：本技术 用于智能手表的ecg电极和智能手表 (ECG electrode for smart watch and smart watch ) 是由 杨荣广 孙士友 张斌 陈石峰 郜成杰 于 2019-11-27 设计创作，主要内容包括：本申请实施例提供一种用于智能手表的ECG电极和智能手表,该智能手表还包含用于无线充电的充电线圈,ECG器件电极镶嵌在智能手表外壳上接触皮肤的位置；在无线充电时,ECG器件电极位于充电线圈与充电底座中的充电线圈之间。ECG器件电极,用于与皮肤接触以采集电信号；ECG器件电极的材料为导电陶瓷。实施本申请实施例,可以提高智能手表的无线充电效率。(The embodiment of the application provides an ECG electrode for an intelligent watch and the intelligent watch, wherein the intelligent watch further comprises a charging coil for wireless charging, and the electrode of an ECG device is embedded in a position, contacting with the skin, on a shell of the intelligent watch; in wireless charging, the ECG device electrode is located between the charging coil and the charging coil in the charging base. ECG device electrodes for contacting the skin to acquire electrical signals; the material of the ECG device electrodes is a conductive ceramic. By implementing the embodiment of the application, the wireless charging efficiency of the intelligent watch can be improved.)

1. An electrocardiogram, ECG, device electrode for a smart watch, characterized in that,

the intelligent watch further comprises a charging coil for wireless charging, and the ECG device electrode is embedded on the intelligent watch shell at a position contacting with the skin; when wirelessly charging, the ECG device electrode is located between the charging coil and a charging coil in a charging base;

the ECG device electrode is used for contacting with the skin to acquire an electric signal;

the material of the ECG device electrode is conductive ceramic.

2. The ECG device electrode of claim 1, wherein the material of the ECG device electrode is a conductive ceramic obtained by doping zirconium oxide with metallic tungsten.

3. The ECG device electrode of claim 2, wherein the metallic tungsten is present in the conductive ceramic in an amount c that satisfies 5% ≦ c ≦ 55%.

4. The ECG device electrode of claim 1, wherein the material of the ECG device electrode is a conductive ceramic obtained by doping one or more of titanium carbide and titanium boride in silicon carbide.

5. The ECG device electrode according to claim 4, wherein the content a of the silicon carbide in the conductive ceramic satisfies 50% ≦ a ≦ 80%;

the content b of the titanium carbide in the conductive ceramic is more than or equal to 10% and less than or equal to 25%, and the content d of the titanium boride in the conductive ceramic is more than or equal to 10% and less than or equal to 25%.

6. The ECG device electrode according to any of claims 1-5, wherein the number of the ECG device electrodes is two segments, each segment of the two segments being arched and both segments being located on a first circular ring concentric with a circular opening on the housing;

the charging coil is positioned on a second circular ring concentric with the circular opening on the housing;

wherein the first and second rings have different radii.

7. The ECG device electrode of any of claims 1-6,

the smart watch further comprises a finger electrode, the ECG device electrode is for contacting the skin to acquire a first electrical signal, the finger electrode is for contacting the skin to acquire a second electrical signal, and the first electrical signal and the second electrical signal are used for the smart watch to determine an electrocardiogram.

8. The ECG device electrode according to claim 7, wherein the finger electrode is electrically connected to a printed circuit board in the smart watch through a spring or a screw, and the finger electrode is isolated from a housing of the smart watch through an insulating support.

9. The ECG device electrode of any one of claims 1-8, wherein the ECG device electrode is a different ceramic material than a housing of the smart watch, the housing and the ECG device electrode being a unitary structure;

the integrated structure is obtained by superposing and integrally sintering a blank corresponding to the shell and a blank corresponding to the electrode of the ECG device; or the integral structure is obtained by respectively sintering and bonding the blank corresponding to the shell and the blank corresponding to the electrode of the ECG device.

10. A smart watch comprising a charging coil and an ECG device,

the ECG device comprises two or more segments of ECG device electrodes embedded on the smart watch shell at positions contacting the skin;

the charging coil is used for wireless charging;

the ECG device electrode is used for contacting with the skin to collect an electric signal, and is positioned between the charging coil and the charging coil in the charging base during wireless charging;

the material of the ECG device electrode is conductive ceramic.

11. The smart watch of claim 10, wherein the material of the ECG device electrodes is a conductive ceramic obtained by doping zirconium oxide with metallic tungsten.

12. The smart watch of claim 11, wherein the content c of the metallic tungsten in the conductive ceramic satisfies 5% ≦ c ≦ 55%.

13. The smart watch of claim 10, wherein the material of the ECG device electrodes is a conductive ceramic doped with one or more of titanium carbide and titanium boride in silicon carbide.

14. The smart watch of claim 13, wherein the silicon carbide content a in the conductive ceramic satisfies 50% ≦ a ≦ 80%;

the content b of the titanium carbide in the conductive ceramic is more than or equal to 10% and less than or equal to 25%, and the content d of the titanium boride in the conductive ceramic is more than or equal to 10% and less than or equal to 25%.

15. The smart watch of any one of claims 10 to 14, wherein the number of ECG device electrodes is two segments, each segment of the two segments being arcuate and both segments being located on a first circular ring concentric with a circular opening on the housing;

the charging coil is positioned on a second circular ring concentric with the circular opening on the housing;

wherein the first and second rings have different radii.

16. The smart watch of any one of claims 10 to 15,

the smart watch further comprises a finger electrode, the ECG device electrode is for contacting the skin to acquire a first electrical signal, the finger electrode is for contacting the skin to acquire a second electrical signal, and the first electrical signal and the second electrical signal are used for the smart watch to determine an electrocardiogram.

17. The smart watch of claim 16, wherein the finger electrode is electrically connected to a printed circuit board in the smart watch via a spring or a screw, and the finger electrode is isolated from a case of the smart watch via an insulating support.

18. The smart watch of any one of claims 10 to 17, wherein the ECG device electrode is a different ceramic material than a housing of the smart watch, the housing and the ECG device electrode being a unitary structure;

the integrated structure is obtained by superposing and integrally sintering a blank corresponding to the shell and a blank corresponding to the electrode of the ECG device; or the integral structure is obtained by respectively sintering and bonding the blank corresponding to the shell and the blank corresponding to the electrode of the ECG device.

Technical Field

The application relates to the technical field of electronics, especially, relate to an ECG electrode and intelligent wrist-watch for intelligent wrist-watch.

Background

Currently, wearable devices such as smart watches and bracelets are constantly developing. An Electrocardiogram (ECG) device in the wearable device may acquire data of electrocardiographic changes of the user. The ECG device may also be used in conjunction with a photoplethysmograph (PPG) to acquire electrocardiographically varying data of the user. The inside charging coil that can also set up of wearable equipment realizes wearable equipment's wireless function of charging.

At the skin-contacting location on the smart watch case, a metal sheet or metal film may be provided as the ECG device electrode. In addition, the charging coil inside the intelligent watch can be used for being coupled with the charging coil in the charging base to realize a wireless charging function. When carrying out wireless charging, form magnetic field between the charging coil in the intelligent wrist-watch and the charging base.

However, the ECG device electrode of the metal component is located between the two charging coils, and the magnetic lines of force are blocked by the ECG device electrode when wireless charging is performed. The ECG device electrode forms eddy current and generates heat, thereby reducing the magnetic force line of the charging coil coupled to the intelligent watch and reducing the wireless charging efficiency.

Disclosure of Invention

The application discloses an ECG electrode and intelligent wrist-watch for intelligent wrist-watch can realize the wireless function of charging of intelligent wrist-watch to improve wireless charging efficiency.

In a first aspect, the present application provides an electrocardiogram, ECG, device electrode, the ECG device electrode is used for a smart watch, the smart watch further comprises a charging coil for wireless charging, and the ECG device electrode is embedded in a position on a housing of the smart watch, where the charging coil contacts the skin; during wireless charging, the ECG device electrode is positioned between the charging coil and the charging coil in the charging base; the ECG device electrode is used for contacting with the skin to collect an electric signal; the material of the ECG device electrodes is a conductive ceramic.

In the first aspect, the ECG device electrode is provided, wherein the microstructure of the conductive ceramic material is in a grid shape. When wireless charging is carried out, the magnetic force lines can penetrate through the conductive ceramic material without being blocked. Therefore, the condition that the electrode of the ECG device made of the conductive ceramic material generates eddy current during wireless charging is reduced, and the wireless charging efficiency is improved.

The conductive ceramic material used by the ECG device electrode has a circuit conduction function, and can transmit the collected electric signals related to the electrocardiogram to the data processing module through the FPC so as to obtain the electrocardiogram.

Two material composition examples of ECG device electrodes are presented.

(1) Zirconium oxide doped with metal tungsten

The material of the ECG device electrode is conductive ceramic obtained by doping metal tungsten in zirconium oxide.

In one possible implementation, the content c of the metallic tungsten in the conductive ceramic satisfies 5% ≦ c ≦ 55%. The conductive ceramic can keep the advantages of high hardness, high surface gloss, scratch resistance, corrosion resistance of the surface, safe material pasting and no allergy. The complex phase conductive ceramic is suitable for being applied to wearing products and has good ECG conductive performance. Compared with a metal electrode (such as a stainless steel electrode) and a coated electrode, the conductive ceramic is used as an ECG device electrode, so that the conditions of generating eddy current and generating heat are reduced when wireless charging is carried out, and the wireless charging efficiency is improved.

Illustratively, the ECG device electrode uses a conductive ceramic with zirconia as the ceramic substrate and the content c of metallic tungsten may be equal to 5%. For another example, in the conductive ceramic, zirconium oxide is used as the ceramic substrate, and the content c of metallic tungsten may also be equal to 55%. For another example, in the conductive ceramic, zirconium oxide is used as the ceramic substrate, and the content c of metallic tungsten may be 30%.

Optionally, a trace amount of one or more materials of yttrium oxide, iron oxide, cobalt oxide, etc. may be added to the zirconia to adjust the color of the conductive ceramic. The composition and proportion of the added color-adjusting material are not limited in the embodiments of the present application.

(2) The silicon carbide is doped with one or more of titanium carbide and titanium boride

The material of the ECG device electrode is conductive ceramic obtained by doping one or more of titanium carbide and titanium boride in silicon carbide.

In one possible realization mode, the content a of the silicon carbide in the conductive ceramic is more than or equal to 50% and less than or equal to 80%; the content b of the titanium carbide in the conductive ceramic is more than or equal to 10% and less than or equal to 25%, and the content d of the titanium boride in the conductive ceramic is more than or equal to 10% and less than or equal to 25%.

The test shows that compared with the ECG device electrode with stainless steel components, the content b of titanium carbide is more than or equal to 10% and less than or equal to 25% and/or the content d of titanium boride is more than or equal to 10% and less than or equal to 25% d, the conductive ceramic obtained by taking silicon carbide as the base material can be used as the ECG device electrode, when wireless charging is carried out, the conductive ceramic can reduce the condition of eddy current heating, and the wireless charging efficiency is improved.

Illustratively, the ECG device electrode may employ a conductive ceramic having a silicon carbide content a of 80% and a titanium carbide content b of 20% as the ceramic substrate. For another example, the content a of silicon carbide as the ceramic substrate may be 80%, the content b of titanium carbide may be 10%, and the content d of titanium boride may be 10%. For another example, the content a of silicon carbide as the ceramic substrate may be 80% and the content d of titanium boride may be 20%. For another example, the content a of silicon carbide as the ceramic substrate may be 50%, the content b of titanium carbide may be 25%, and the content d of titanium boride may be 25%.

But ECG device electrode and charging coil dislocation layout, the shell is only separated by between the charging coil of charging coil and charging base like this, does not have PPG and ECG device electrode occupy-place to coupling distance between the charging coil in charging coil and the charging base has been reduced, thereby has improved charge efficiency, and has reduced the thickness of intelligent wrist-watch.

In one possible implementation, the number of the ECG device electrodes is two, each of the two ECG device electrodes is arched, and the two ECG device electrodes are both located on a first circular ring concentric with the circular opening on the housing; the charging coil is positioned on a second circular ring concentric with the circular opening on the shell; wherein the first ring and the second ring have different radii.

The radii of the first circular ring and the second circular ring are different, namely the radius section of the first circular ring and the radius section of the second circular ring do not have an intersection.

In the embodiment of the present application, the electrode and the housing of the ECG device may be integrally sintered or separately sintered. The housing and the ECG device electrodes may be a unitary structure. Therefore, gaps between electrodes of the ECG device and the shell can be reduced, and the dustproof and waterproof performance of the intelligent watch is improved.

In one possible implementation, the smart watch further comprises a finger electrode, the ECG device electrode is for contacting the skin to acquire a first electrical signal, the finger electrode is for contacting the skin to acquire a second electrical signal, and the first electrical signal and the second electrical signal are used for the smart watch to determine an electrocardiogram.

In the embodiment of the present application, the finger electrodes are no longer provided on the crown and the buttons. The finger electrode is located intelligent wrist-watch side or top surface. The area of the finger electrode for contacting the skin of the finger may be greater than or equal to 30 square millimeters. Therefore, the finger electrode can be ensured to be in good contact with the skin, and the acquisition accuracy of electrocardiogram data is improved. In addition, the electrocardiogram is displayed through the display screen while the finger is pressed on the finger electrode for testing, so that the user can conveniently watch the measurement result while testing.

In a possible implementation mode, the finger electrode is electrically connected with the printed circuit board in the intelligent watch through the elastic sheet or the screw, and the finger electrode is isolated from the shell of the intelligent watch through the insulating support, so that the influence of charges on the shell on electrocardiogram data measurement is reduced, and the accuracy of electrocardiogram measurement is improved.

In one possible implementation, the ECG device electrode and the housing of the smart watch are different ceramic materials, the housing and the ECG device electrode being of a unitary structure; the integrated structure is obtained by superposing and integrally sintering a blank corresponding to the shell and a blank corresponding to the electrode of the ECG device; or the integral structure is obtained by respectively sintering and bonding the blank corresponding to the shell and the blank corresponding to the electrode of the ECG device.

The shell and the ECG device electrode are of an integrated structure, so that gaps between the ECG device electrode and the shell can be reduced, and the dustproof and waterproof performance of the intelligent watch is improved.

In a second aspect, embodiments of the present application provide a smart watch including a charging coil and an ECG device, the ECG device including two or more segments of ECG device electrodes embedded on a housing of the smart watch at a position contacting skin; the charging coil is used for wireless charging; the ECG device electrode is used for contacting with the skin to collect an electric signal, and is positioned between the charging coil and the charging coil in the charging base during wireless charging; the material of the ECG device electrodes is a conductive ceramic.

In the smart watch provided by the second aspect, the material of the ECG device used is a conductive ceramic. The microstructure of the conductive ceramic is in a grid shape. When wireless charging is carried out, the magnetic force lines can penetrate through the conductive ceramic material without being blocked. Therefore, the condition that the electrode of the ECG device made of the conductive ceramic material generates eddy current during wireless charging is reduced, and the wireless charging efficiency is improved.

The conductive ceramic material used by the ECG device electrode has a circuit conduction function, and can transmit the collected electric signals related to the electrocardiogram to the data processing module through the FPC so as to obtain the electrocardiogram.

In one possible implementation, the material of the ECG device electrode is a conductive ceramic obtained by doping metallic tungsten in zirconia.

For example, the content c of the metallic tungsten in the conductive ceramic satisfies 5% ≦ c ≦ 55%. The conductive ceramic can keep the advantages of high hardness, high surface gloss, scratch resistance, corrosion resistance of the surface, safe material pasting and no allergy. The complex phase conductive ceramic is suitable for being applied to wearing products and has good ECG conductive performance. Compared with a metal electrode (such as a stainless steel electrode) and a coated electrode, the conductive ceramic is used as an ECG device electrode, so that the conditions of generating eddy current and generating heat are reduced when wireless charging is carried out, and the wireless charging efficiency is improved.

Illustratively, the ECG device electrode uses a conductive ceramic with zirconia as the ceramic substrate and the content c of metallic tungsten may be equal to 5%. For another example, in the conductive ceramic, zirconium oxide is used as the ceramic substrate, and the content c of metallic tungsten may also be equal to 55%. For another example, in the conductive ceramic, zirconium oxide is used as the ceramic substrate, and the content c of metallic tungsten may be 30%.

Optionally, a trace amount of one or more materials of yttrium oxide, iron oxide, cobalt oxide, etc. may be added to the zirconia to adjust the color of the conductive ceramic. The composition and proportion of the added color-adjusting material are not limited in the embodiments of the present application.

In one possible implementation, the material of the ECG device electrode is a conductive ceramic obtained by doping one or more of titanium carbide and titanium boride in silicon carbide.

For example, the content a of the silicon carbide in the conductive ceramic satisfies 50% ≦ a ≦ 80%; the content b of the titanium carbide in the conductive ceramic is more than or equal to 10% and less than or equal to 25%, and the content d of the titanium boride in the conductive ceramic is more than or equal to 10% and less than or equal to 25%.

The test shows that compared with the ECG device electrode with stainless steel components, the content b of titanium carbide is more than or equal to 10% and less than or equal to 25% and/or the content d of titanium boride is more than or equal to 10% and less than or equal to 25% d, the conductive ceramic obtained by taking silicon carbide as the base material can be used as the ECG device electrode, when wireless charging is carried out, the conductive ceramic can reduce the condition of eddy current heating, and the wireless charging efficiency is improved.

Illustratively, the ECG device electrode may employ a conductive ceramic having a silicon carbide content a of 80% and a titanium carbide content b of 20% as the ceramic substrate. For another example, the content a of silicon carbide as the ceramic substrate may be 80%, the content b of titanium carbide may be 10%, and the content d of titanium boride may be 10%. For another example, the content a of silicon carbide as the ceramic substrate may be 80% and the content d of titanium boride may be 20%. For another example, the content a of silicon carbide as the ceramic substrate may be 50%, the content b of titanium carbide may be 25%, and the content d of titanium boride may be 25%.

In one possible implementation, the number of the ECG device electrodes is two, each of the two ECG device electrodes is arched, and the two ECG device electrodes are both located on a first circular ring concentric with the circular opening on the housing; the charging coil is positioned on a second circular ring concentric with the circular opening on the shell; wherein the first ring and the second ring have different radii.

But ECG device electrode and charging coil dislocation layout, the shell is only separated by between the charging coil of charging coil and charging base like this, does not have PPG and ECG device electrode occupy-place to coupling distance between the charging coil in charging coil and the charging base has been reduced, thereby has improved charge efficiency, and has reduced the thickness of intelligent wrist-watch.

In one possible implementation, the smart watch further comprises a finger electrode, the ECG device electrode is for contacting the skin to acquire a first electrical signal, the finger electrode is for contacting the skin to acquire a second electrical signal, and the first electrical signal and the second electrical signal are used for the smart watch to determine an electrocardiogram.

In the embodiment of the present application, the finger electrodes are no longer provided on the crown and the buttons. The finger electrode is located intelligent wrist-watch side or top surface. The area of the finger electrode for contacting the skin of the finger may be greater than or equal to 30 square millimeters. Therefore, the finger electrode can be ensured to be in good contact with the skin, and the acquisition accuracy of electrocardiogram data is improved. In addition, the electrocardiogram is displayed through the display screen while the finger is pressed on the finger electrode for testing, so that the user can conveniently watch the measurement result while testing.

In a possible implementation mode, the finger electrode is electrically connected with the printed circuit board in the intelligent watch through the elastic sheet or the screw, and the finger electrode is isolated from the shell of the intelligent watch through the insulating support, so that the influence of charges on the shell on electrocardiogram data measurement is reduced, and the accuracy of electrocardiogram measurement is improved.

In one possible implementation, the ECG device electrode and the housing of the smart watch are different ceramic materials, the housing and the ECG device electrode being of a unitary structure; the integrated structure is obtained by superposing and integrally sintering a blank corresponding to the shell and a blank corresponding to the electrode of the ECG device; or the integral structure is obtained by respectively sintering and bonding the blank corresponding to the shell and the blank corresponding to the electrode of the ECG device. The shell and the ECG device electrode are of an integrated structure, so that gaps between the ECG device electrode and the shell can be reduced, and the dustproof and waterproof performance of the intelligent watch is improved.

In a third aspect, the embodiments of the present application provide a housing, which is a housing containing the ECG device electrode provided in any one of the possible embodiments of the first aspect and the first aspect.

It will be appreciated that the housing of the third aspect provided above contains the ECG device electrodes described in the first aspect or any one of the possible embodiments of the first aspect. Therefore, the beneficial effects achieved by the electrode can refer to the beneficial effects in the corresponding ECG device electrode, and the details are not repeated herein.

In a fourth aspect, embodiments of the present application provide a finger electrode for contacting the skin to acquire a second electrical signal, the finger electrode measuring an electrocardiogram together with the ECG device electrodes provided in the first aspect. This finger electrode is located intelligent wrist-watch side or top surface to be connected through shell fragment or screw and the printed circuit board electricity in this intelligent wrist-watch, keep apart through insulating support between this finger electrode and the shell of this intelligent wrist-watch, influence the electrocardiogram data measurement with the electric charge that reduces on the shell, improve the accuracy of electrocardiogram measurement.

In one possible implementation, the finger electrodes are no longer provided on the crown and buttons, but on the case of the side or top surface of the smart watch.

In one possible implementation, the area of the finger electrode for contacting the skin of the finger may be greater than or equal to 30 square millimeters. Therefore, the finger electrode can be ensured to be in good contact with the skin, and the acquisition accuracy of electrocardiogram data is improved. In addition, the electrocardiogram is displayed through the display screen while the finger is pressed on the finger electrode for testing, so that the user can conveniently watch the measurement result while testing.

Drawings

Fig. 1 is a schematic structural diagram of a smart watch 10 according to an embodiment of the present application;

fig. 2A to 2B are schematic structural diagrams of another smart watch 10 provided in the embodiment of the present application;

FIG. 3 is a schematic structural diagram of an ECG device provided by an embodiment of the present application;

fig. 4A to fig. 4B are schematic diagrams illustrating a wireless charging according to an embodiment of the present disclosure;

FIGS. 5A-5B are temperature profiles of electrodes 102 of ECG devices of different material compositions during wireless charging according to embodiments of the present application;

fig. 6 is an exploded view of the smart watch 10 provided in the embodiment of the present application;

fig. 7A is an exploded view of the housing 101, ECG device electrodes 102, and FPC501 provided by an embodiment of the present application;

fig. 7B is a cross-sectional view of the housing 101, ECG device electrodes 102, and FPC501 provided by an embodiment of the present application;

fig. 8A to 8B are schematic structural diagrams of an ECG device provided in the smart watch 10 according to an embodiment of the present application;

fig. 9A to 9C are schematic structural diagrams of electrical connection between the finger electrode and the PCB according to the embodiment of the present application;

fig. 10 is a schematic structural diagram of an electrical connection between a finger electrode and a PCB according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings. The terminology used in the description of the embodiments herein is for the purpose of describing particular embodiments herein only and is not intended to be limiting of the application.

In order to improve wireless charging efficiency, the embodiment of the application provides an ECG electrode and a smart watch for the smart watch.

It can be understood that the embodiment of the present application is described by taking a smart watch as an example, but is not limited to the smart watch, and may also be other electronic devices. The electronic device may be a device such as an intelligent bracelet including an ECG device and a wireless charging module, glasses, a head-mounted electronic device, goggles, and the like including an ECG device and a wireless charging module, or a smart phone, a Personal Digital Assistant (PDA), a notebook computer, and the like including an ECG device and a wireless charging module, which are not limited in the following embodiments of the present application.

The following describes a schematic structural diagram of an electronic device according to an embodiment of the present application. The embodiment of the present application will be described taking an example in which the electronic device 10 is a smart watch 10. Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent watch 10 according to an embodiment of the present application. As shown in fig. 1, the smart watch 10 may include: the device comprises a processor 101A, a memory 102A, a communication module 103A, an antenna 104A, an ECG device 105A, a wireless charging module 106A and a display screen 107A. Wherein:

the processor 101A may be used to read and execute computer readable instructions. In a specific implementation, the processor 101A may mainly include a controller, an operator, and a register. The controller is mainly responsible for instruction decoding and sending out control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for storing register operands, intermediate operation results and the like temporarily stored in the instruction execution process. In a specific implementation, the hardware architecture of the processor 101A may be an Application Specific Integrated Circuit (ASIC) architecture, a MIPS architecture, an ARM architecture, or an NP architecture, etc.

In some embodiments, processor 101A may be configured to interpret signals received by communication module 103A.

The memory 102A is coupled to the processor 101A for storing various software programs and/or sets of instructions. In particular implementations, the memory 102A may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices. The memory 102A may store an operating system, such as an embedded operating system like uCOS, VxWorks, RTLinux, etc. The memory 102A may also store a communication program that may be used to communicate with other devices.

The communication module 103A may provide a solution for wireless communication including WLAN (e.g., Wi-Fi network), BR/EDR, BLE, GNSS, FM, etc. applied on the smart watch 10.

In other embodiments, the communication module 103A may also transmit signals so that other devices may discover the smart watch 10.

The wireless communication function of the smart watch 10 may be realized by the antenna 104A, the communication module 103A, the modem processor, and the like.

The antenna 104A may be used to transmit and receive electromagnetic wave signals. Each antenna in the smart watch 10 may be used to cover a single or multiple communication bands.

There may be one or more antennas of the communication module 103A in some embodiments.

The ECG device 105A may be used to acquire electrocardiographically varying data of the user. The ECG device 105A may also acquire data of electrocardiographic changes of the user together with the PPG. The ECG device 105A may include ECG device electrodes for contacting the wrist skin to acquire electrical signals associated with an electrocardiogram. The ECG device electrodes may be embedded in the smart watch 10 housing.

Wireless charging module 106A may contain a charging coil for coupling with a charging coil in a charging base to enable wireless charging of smart watch 10.

The smart watch 10 may also include a display screen 107A, wherein the display screen 107 may be used to display images, reminders, and the like. The display screen may be a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a flexible light-emitting diode (FLED) display screen, a quantum dot light-emitting diode (QLED) display screen, or the like.

Electronic device 10 may be a smart watch, not limited to a smart watch, and in some embodiments, electronic device 10 may also be a smart bracelet containing an ECG device and a wireless charging module, glasses, a head-mounted electronic device, goggles, a smartphone, a PDA, a laptop computer, and so forth. In some embodiments, the electronic device 10 may also include a serial interface such as an RS-232 interface. The serial interface may be connected to other devices, such as an audio playback device such as a smart speaker, so that the electronic device 10 and the audio playback device cooperate to play audio and video.

It is to be understood that the configuration illustrated in fig. 1 does not constitute a specific limitation of the electronic device 10. In other embodiments of the present application, the electronic device 10 may include more or fewer components than shown, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

The electronic device 10 is described as an example of a smart watch, and it can be understood that the embodiment of the present application can also be applied to other wearable devices, head-mounted devices, smart phones, PDAs, or notebook computers.

Referring to fig. 2A to 2B, fig. 2A to 2B are schematic structural diagrams of another smart watch according to an embodiment of the present application. As shown in fig. 2A, ECG device electrodes 102 on smart watch 10 may be embedded on housing 101. Both the ECG device electrodes 102 and the housing 101 may be ceramic. The casing 101 may be an insulating ceramic, such as a zirconia dioxide (ZrO2) ceramic. The ECG device electrodes 102 may be conductive ceramics for contact with the skin of a user to acquire electrocardiogram related electrical signals. The case 101 is used to enclose the modules of the smart watch 10. The housing 101 may be a back shell of the smart watch 10, that is, a portion of a shell that contacts the skin of the user when worn by the user, or may be a complete shell, which is not limited in this embodiment of the application.

It is understood that the embodiment of the present application describes the case 101 and the ECG device electrode 102 as being made of ceramic materials, but not limited to ceramic materials, and the case 101 and the ECG device electrode 102 may also be made of other crystal materials (e.g., sapphire), glass, conductive plastics, or conductive rubber. The housing 101 and the ECG device electrodes 102, which use plastic or conductive rubber, may be obtained by injection molding or other molding means.

As shown in fig. 2A, the smart watch 10 may also include lenses 200 of a PPG. PPG can be used with ECG devices to achieve measurement of an electrocardiogram.

The smart watch 10 may also contain a crown 300 and buttons 400. Crown 300 and buttons 400 may each perform certain functions in response to user operations. For example, the button 400 may display a main interface in response to a finger-pressing operation by the user.

As shown in fig. 2A, a finger electrode 600 may also be included between the side crown 300 of the smart watch 10 and the button 400. The finger electrodes 600 may be used in conjunction with the ECG device electrodes 102 to acquire electrocardiogram related electrical signals. Specifically, the ECG device electrode 102, which is in contact with the wrist skin of one hand of the user, may include two segments, one for acquiring a bioelectrical signal of a human body, and the other for emitting an electrical signal to the human body to remove environmental noise, so that the acquired electrical signal is more accurate. The finger electrode 600 may be used for finger input of electrical signals of the other hand. The smart watch 10 may obtain electrocardiogram data from the electrical signals collected by the ECG device electrodes 102 and the electrical signals collected by the finger electrodes 600, and display an electrocardiogram on the display screen 107A.

The housing 101 may include a circular opening therein, which may be configured for the lens 200 of the PPG, or may be configured for other purposes.

As shown in fig. 2B, fig. 2B is a cross-sectional view along a-a in fig. 2A. The smart watch 10 may also contain a charging coil 500 inside. This charging coil 500 can with the charging coil coupling in the base that charges, realize carrying out wireless charging to intelligent wrist-watch 10. The principle of wireless charging can be referred to the description of fig. 4A.

The principle of measuring electrocardiogram and the principle of wireless charging are described below with reference to the accompanying drawings.

Principle of ECG device measuring electrocardiogram

Referring to fig. 3, fig. 3 is a schematic structural diagram of an ECG device according to an embodiment of the present application. As shown in fig. 3, the ECG device may include ECG device electrodes 102, a Flexible Printed Circuit (FPC) 501, and a data processing module 502. Wherein:

ECG device electrodes 102 for contact with the skin of a user to acquire electrical signals associated with an electrocardiogram. Illustratively, the ECG device electrodes 102 may be located in a back shell position of the smart watch 10, the ECG device electrodes 102 being in contact with the skin of the user when the smart watch 10 is worn by the user.

And the FPC501 is used for transmitting the electric signals collected by the ECG device electrodes 102 to the data processing module 502.

And the data processing module 502 is used for processing the acquired electric signals. Specifically, for example, the acquired electrical signal is filtered, amplified, analog-to-digital converted, and the like. The data processed by the data processing module 502 can be output to the processor. The processor may derive an electrocardiogram based on the data output from the data processing module 502 and control the display screen 107A to display the electrocardiogram.

b. Principle of wireless charging

Referring to fig. 4A to 4B, fig. 4A to 4B are schematic diagrams illustrating a wireless charging principle according to an embodiment of the present disclosure. As shown in fig. 4A, when the smart watch 10 is placed on a charging base for wireless charging, a charging coil in the charging base may generate a magnetic field under an alternating current of a certain frequency due to electromagnetic induction. The lines of force of the magnetic field pass through the charging coil 500 inside the smart watch 10 so that the charging coil 500 can generate current in the magnetic field. In this way, the output of the charging coil 500 inside the smart watch 10 may power the smart watch 10.

Wherein, the charging coil in the charging base can be electrically connected with the power supply through an electronic device or a lead. It is understood that the schematic diagram of the vortex shown in fig. 4B is only used for explaining the embodiment of the present application and should not be construed as limiting.

In an embodiment of the present application, the smart watch 10 may include an ECG device and a wireless charging module. Then when the smart watch 10 is placed on the charging dock for wireless charging, as shown in fig. 4B, the ECG device electrode 102 is between the charging coil 500 and the charging coil of the charging dock.

In the prior art, when the ECG device electrode 102 is made of metal, the ECG device electrode 102 can block the magnetic lines of force of the magnetic field generated by the charging coil of the charging base during wireless charging. Specifically, as shown in fig. 4B, the ECG device electrode 102 is metal, and when magnetic field lines act on the metal ECG device electrode 102, the metal ECG device electrode 102 blocks the magnetic field lines of the magnetic field and generates eddy currents inside the ECG device electrode 102, thereby generating heat. Thus, the magnetic force lines acting on the charging coil 500 are reduced, thereby reducing the induced current of the charging coil 500 and reducing the wireless charging efficiency.

In order to improve wireless charging efficiency, the embodiment of the application provides an ECG device electrode for a smart watch and the smart watch. In the smart watch 10, the ECG device electrodes 102 may be made of a conductive ceramic material, and the microstructure of the conductive ceramic material is in a grid shape. When wireless charging is carried out, the magnetic force lines can penetrate through the conductive ceramic material without being blocked. Thus, the condition that the electrode 102 of the ECG device made of the conductive ceramic material generates eddy current during wireless charging is reduced, and the wireless charging efficiency is improved. The conductive ceramic material used by the ECG device electrode 102 has a circuit conducting function, and can transmit the collected electrocardiogram related electrical signals to the data processing module 502 through the FPC 501.

In embodiments of the present application, the resistivity of the conductive ceramic used as the ECG device electrode 102 may be less than or equal to 10^-4Ohm/cm. The above examples of the resistivity values are only used to explain the examples of the present application, and the examples of the present application do not limit the resistivity of the conductive ceramic.

The smart watch 10 provided in the embodiment of the present application is described below in the following aspects: firstly, the material composition of the conductive ceramic adopted by the ECG device electrode 102; secondly, the structural design of the electrode 102 of the ECG device and the charging coil 500; and thirdly, structural design of the finger electrode.

Material composition of conductive ceramic used for ECG device electrode 102

In the embodiment of the present application, the conductive ceramic used for the ECG device electrode 102 may include single-phase conductive ceramics such as silicon carbide (SiC), zinc oxide (ZnO), titanium dioxide (TiO 2), TiN oxide (SnO), titanium carbide (TiC), titanium nitride (TiN), titanium boride (TiB), Boron Nitride (BN), and the like. The conductive ceramic used for the ECG device electrode 102 may also be a complex phase conductive ceramic obtained by doping modification or adding a conductive phase, such as zirconium oxide (ZrO2) doped with tungsten (W) metal or titanium carbide (TiC), titanium nitride (TiN).

Two examples of material compositions of the conductive ceramics used in the ECG device electrodes 102 in the embodiments of the present application and temperature measurements during wireless charging are described below.

(1) Zirconium oxide (ZrO2) doped with metal tungsten (W)

In one embodiment of the present application, the conductive ceramic used for the ECG device electrode 102 is obtained by doping zirconium oxide (ZrO2) with tungsten (W). Specifically, zirconia can be used as a ceramic substrate, and metal tungsten can be used as a conductive material to form a conductive grid in the obtained ceramic material.

Optionally, in the conductive ceramic used for the electrode 102 of the ECG device, the content c of the metal tungsten can be 5% to 55%. The conductive ceramic can keep the advantages of high hardness, high surface gloss, scratch resistance, corrosion resistance of the surface, safe material pasting and no allergy. The complex phase conductive ceramic is suitable for being applied to wearing products and has good ECG conductive performance. Through the test, compare in metal electrode and coating film electrode, this electrically conductive ceramic has reduced the condition that produces the vortex and generate heat when carrying out wireless charging as ECG device electrode, has improved wireless charging efficiency.

Illustratively, the ECG device electrode 102 may be a conductive ceramic with zirconia as the ceramic substrate and the metallic tungsten content c may be equal to 5%. For another example, in the conductive ceramic, zirconium oxide is used as the ceramic substrate, and the content c of metallic tungsten may also be equal to 55%. For another example, in the conductive ceramic, zirconium oxide is used as the ceramic substrate, and the content c of metallic tungsten may be 30%. In the embodiment of the present application, the content c of the metal tungsten may be any value of 5% to 55%.

The following describes the heat generation during wireless charging of a conductive ceramic obtained by using zirconia as a ceramic substrate, as the ECG device electrode 102, in which the content of metal tungsten is 5%, 30%, and 55%, respectively. Referring to fig. 5A, fig. 5A is a graph of the temperature of electrodes 102 of an ECG device with different material compositions during wireless charging according to an embodiment of the present disclosure. When the temperature profile test shown in fig. 5A was performed, the external conditions (e.g., ambient temperature, humidity, etc.) and parameters (e.g., size, shape, location in the smart watch, etc. of the ECG device electrodes) were the same except for the different material compositions.

As shown in fig. 5A, when the smart watch is wirelessly charged, the temperature of the ECG device electrode made of stainless steel is always higher than the temperature of the charging coil 500 in the smart watch during the test. After 5 minutes, the temperature of the stainless steel composition ECG device electrode exceeded 50 ℃. And the temperature of the electrode of the ECG device with the zirconium oxide substrate doped with the metal tungsten component is always lower than that of the charging coil 500 in the intelligent watch in the test process. In addition, among the conductive ceramics containing 5%, 30% and 55% of metal tungsten, the conductive ceramics containing the zirconium oxide base material doped with metal tungsten with a higher content generate more heat as an ECG electrode when the smart watch is wirelessly charged.

Therefore, compared with the ECG device electrode made of stainless steel, the content c of metal tungsten is more than or equal to 5% and less than or equal to 55%, the conductive ceramic obtained by taking zirconium oxide as the base material can be used as the ECG device electrode, and when wireless charging is carried out, the conductive ceramic can reduce the condition of eddy current heating generation, so that the wireless charging efficiency is improved.

Optionally, in this embodiment, a trace amount of yttrium oxide (yttria), iron oxide (iron oxide), cobalt oxide (cobalt oxide), or the like may be added to the zirconium oxide (ZrO2) to adjust the color of the conductive ceramic. The composition and ratio of the added color-adjusting material are not limited in the examples of the present application, but the ceramic material obtained by adding the metal tungsten in the content c to the zirconium oxide (ZrO2) is within the protection scope of the present application.

(2) Silicon carbide (SiC) is doped with one or more of titanium carbide (TiC) and titanium boride (TiB)

In another embodiment of the present application, the conductive ceramic used for the ECG device electrode 102 may be obtained by doping silicon carbide (SiC) with one or more of titanium carbide (TiC) and titanium boride (TiB). Specifically, silicon carbide (SiC) may be used as a ceramic substrate, and one or more of titanium carbide (TiC) and titanium boride (TiB) may be used as a conductive material to form a conductive grid.

Optionally, in the conductive ceramic used for the electrode 102 of the ECG device, the content a of silicon carbide as the ceramic substrate can be between 50% and 80%. The content b of the titanium carbide (TiC) as a conductive material can meet the requirement that b is more than or equal to 10% and less than or equal to 25%. The content d of the titanium boride (TiB) as a conductive material can be more than or equal to 10% and less than or equal to 25%.

Illustratively, the ECG device electrode 102 may be made of a conductive ceramic having a silicon carbide content a of 80% and a titanium carbide content b of 20% as the ceramic substrate. For another example, the content a of silicon carbide as the ceramic substrate may be 80%, the content b of titanium carbide may be 10%, and the content d of titanium boride may be 10%. For another example, the content a of silicon carbide as the ceramic substrate may be 80% and the content d of titanium boride may be 20%. For another example, the content a of silicon carbide as the ceramic substrate may be 50%, the content b of titanium carbide may be 25%, and the content d of titanium boride may be 25%.

The content a, b and d are not limited to the above examples, and other values may be adopted, which is not limited in the embodiment of the present application.

Referring to fig. 5B, fig. 5B is a graph of the temperature of electrodes 102 of an ECG device with different material compositions during wireless charging according to an embodiment of the present disclosure. As shown in fig. 5B, when the smart watch is wirelessly charged, the temperature of the ECG device electrode made of stainless steel is always higher than the temperature of the charging coil 500 in the smart watch during the test. And the temperature of the ECG device electrode with the silicon carbide base material doped with 20% of titanium boride components is always lower than that of a charging coil 500 in the smart watch in the testing process. The ECG device electrode with the silicon carbide substrate doped with 20% titanium carbide component also has a temperature always lower than that of the charging coil 500 in the smart watch during the test. Moreover, the ECG device electrode with the silicon carbide base material doped with 20% of titanium boride components is always lower in temperature than the ECG device electrode with the silicon carbide base material doped with 20% of titanium carbide components in the test process.

Therefore, compared with the ECG device electrode made of stainless steel, the conductive ceramic obtained by using the silicon carbide as the base material can be used as the ECG device electrode, when wireless charging is carried out, the condition of eddy current heating can be reduced by the conductive ceramic, and the wireless charging efficiency is improved.

Structural design of ECG device electrode 102 and charging coil 500

In the embodiment of the present application, the ECG device electrode 102 and the charging coil 500 may be arranged in a staggered manner, that is, the ECG device electrode 102 and the charging coil 500 do not overlap in the thickness direction of the smart watch 10. Referring to fig. 6, fig. 6 is an exploded view of an intelligent watch 10 according to an embodiment of the present application. As shown in fig. 6, the explosion diagram of the smart watch 10 may be the explosion diagram of the smart watch 10 depicted in fig. 2A. In this application embodiment, ECG device electrode 102 and charging coil 500 staggered layout, when wirelessly charging, ECG device electrode still is located between the charging coil in charging coil and the charging base.

ECG device electrodes 102 may be embedded on the housing 101. The ECG device electrodes 102 and the charging coil 500 do not overlap in the thickness direction of the smart watch 10. Specifically, the ECG device electrodes 102 may comprise two arcuate segments of electrodes, each positioned on a circular ring concentric with a circular opening in the housing 101. The charging coil 500 may also be located on a circular ring concentric with the circular opening in the housing 101. The concentric ring on which the ECG device electrode 102 is located and the concentric ring on which the charging coil 500 is located do not overlap. Wherein the circular opening may be provided for a lens 200 of the PPG. For example, both ECG device electrodes are located on a first circular ring concentric with a circular opening in the housing. The charging coil is located on a second ring concentric with the circular opening in the housing. Wherein the first and second rings have different radii. For example, the radius of the first ring is between e and f (e is smaller than f), i.e., the small radius of the first ring is e and the large radius is f. The radius of the second ring is between g and h (g is less than h), namely the small radius of the second ring is g, and the large radius of the second ring is h. The radius intervals e-f of the first ring and g-h of the second ring do not intersect.

As shown in fig. 6, smart watch 10 may also include a back case liner 701, a Printed Circuit Board (PCB) 702, an FPC501, and a watch front case assembly 703. Wherein the crown 300, buttons 400 and finger electrodes 600 may be disposed on the watch front case assembly 703. The crown 300, the button 400, and the finger electrode 600 may be described with reference to the example shown in fig. 2A. With respect to the FPC501, the embodiment described with reference to fig. 3 may be implemented, and the data processing module 502 described with reference to fig. 3 may be implemented by the PCB 702. In the embodiment of the present application, the front housing component 703 may be included in the housing 101.

In the embodiment of the present application, the electrode 102 of the ECG device and the housing 101 may be integrally sintered or separately sintered, which is not limited in the embodiment of the present application. In the case of integral sintering, the green body corresponding to the housing 101 and the green body corresponding to the ECG device electrode 102 are stacked and sintered together. During sintering, the interfaces where the two green bodies meet fuse together, thereby reducing the gap between the ECG device electrode 102 and the housing 101 after sintering. After sintering, grinding, polishing, etc. may be performed to obtain an integral structure of the housing 101 and the ECG device electrodes 102. The housing 101 and the ECG device electrodes 102 may be formed by the above-described integral sintering, grinding, polishing, etc.

When the ECG device electrode 102 and the case 101 are separately sintered, a green body corresponding to the case 101 is obtained by using a mold of the case 101. And then sintering the blank corresponding to the shell 101 to obtain the ceramic structure corresponding to the shell 101. The ceramic structure is ground and polished to obtain the housing 101. Similarly, a mold for the ECG device electrode 102 is used to obtain a corresponding embryo for the ECG device electrode 102. And then sintering the blank corresponding to the electrode 102 of the ECG device to obtain the ceramic structure corresponding to the electrode 102 of the ECG device. The ceramic structure is ground and polished to obtain the ECG device electrode 102. The ceramic structure corresponding to the housing 101 and the ceramic structure corresponding to the ECG device electrode 102 may be bonded by glue, double sided tape, or a sealing ring, resulting in an integral structure of the housing 101 and the ECG device electrode 102.

The housing 101 and the watch bezel assembly 703 may be of an integral structure or of a separate structure.

In the embodiment of the present application, the ECG device electrodes 102 and the charging coil 500 are arranged in a staggered manner from the stack, and do not overlap in the thickness direction of the smart watch 10, so that the thickness of the smart watch 10 can be reduced. Additionally, although the ECG device electrode 102 is located between the charging coil 500 and the charging coil of the charging base, the ECG device electrode 102 is a conductive ceramic with a conductive mesh structure inside through which the magnetic lines of force can pass. Thus, the field lines of the magnetic field may pass through the ECG device electrode 102 of conductive ceramic material and thereby couple into the charging coil 500. It can be seen that the smart watch 10 shown in fig. 6 can reduce the thickness of the smart watch 10 and improve the wireless charging efficiency, compared to the ECG device electrode made of metal in the prior art.

In this embodiment of the application, the ECG device electrode 102 is located between the charging coil 500 and the charging coil of the charging base, that is, the distance between the ECG device electrode 102 and the charging coil 500 projected in the thickness direction is smaller than the distance between the charging coil 500 and the charging coil of the charging base projected in the thickness direction, and specifically, refer to fig. 4B.

In addition, among the prior art, for reducing the magnetic line of force by ECG device electrode cutting, the charging coil of metal material arranges in ECG device electrode below, has ECG device electrode occupy-place between the charging coil in charging coil and the charging base to coupling distance is great, and charging efficiency is lower. In addition, in the prior art, because the charging coil is arranged below the electrode of the ECG device, the electrode of the ECG device occupies the space in the thickness direction, and therefore the thickness of the intelligent watch is large. In the smart watch 10 shown in fig. 6, the ECG device electrode 102 and the charging coil 500 are arranged in a staggered manner, the charging coil 500 is separated from the charging coil of the charging base only by the housing, and the PPG and the ECG device electrode 102 are not occupied, i.e., the coupling distance between the charging coil 500 and the charging coil in the charging base is reduced, so that the charging efficiency is improved, and the thickness of the smart watch is reduced.

In the embodiment of the present application, the integral structure of the housing 101 and the ECG device electrode 102 can be obtained by integral sintering, or the integral structure of the housing 101 and the ECG device electrode 102 can be obtained by respective sintering and bonding. Therefore, the gap between the electrode 102 of the ECG device and the casing 101 can be reduced, and the dustproof and waterproof performance of the intelligent watch 10 can be improved.

In some embodiments of the present application, the ECG device electrode 102 may include a protrusion 1021 thereon, and the housing 101 may include a through hole 1011 at a position corresponding to the protrusion 1021. By integrally or separately sintering and bonding together, it is achieved that the protrusions 1021 occupy the through holes 1011, thereby reducing the gap between the ECG device electrodes 102 and the housing 101.

Referring to fig. 7A-7B, fig. 7A is an exploded view of a housing 101, ECG device electrodes 102, and FPC501 according to an embodiment of the present disclosure. Fig. 7B is a cross-sectional view of a housing 101, ECG device electrodes 102, and FPC501 provided by an embodiment of the present application. As shown in fig. 7A and 7B, the ECG device electrodes 102 and the FPC501 may be conducted through the spring sheet 800. The elastic sheet 800 can be soldered on the FPC501 in advance, and the protrusions 1021 are pressed against the elastic sheet 800 during assembly, so as to realize the electrical connection between the ECG device electrodes 102 and the FPC 501. The FPC501 may include a Board To Board (BTB) 5011 for electrically connecting the FPC501 and the data processing module 502.

It is understood that the electrical connection between the ECG device electrode 102 and the FPC501 is not limited to be realized by the elastic sheet 800, but may also be realized by a conductive adhesive, such as Anisotropic Conductive Film (ACF), solder paste, and the like, which is not limited in this embodiment.

In the present embodiment, the ECG device electrodes 102 may be embedded in corresponding recesses of the housing 101. ECG device electrodes 102 can be donut-shaped, multi-segment donut-shaped (e.g., two-segment, four-segment donut-shaped), and the like. It is understood that the structural example of the ECG device electrode 102 is only used for explaining the embodiment of the present application, and should not be construed as limiting, and other structural designs are possible. The ECG device electrodes 102 can also be designed according to the product shape and wall thickness of the smart watch 10.

In this embodiment of the present application, the shape of the charging coil 500 may be annular, square annular or other shapes, and this embodiment of the present application does not limit the shape, size and position of the charging coil 500.

Structural design of finger electrode

In the embodiment of the present application, the finger electrodes 600 may perform electrical signal acquisition together with the ECG device electrodes 102 to realize measurement of electrocardiogram data.

Specifically, the ECG device electrodes 102 that contact the wrist skin of one hand of the user may comprise two segments. Referring to fig. 8A to 8B, fig. 8A to 8B are schematic structural diagrams of an ECG device in the smart watch 10 according to an embodiment of the present application. As shown in fig. 8A, ECG device electrode 102 may comprise two segments of electrodes, divided into electrode 1022 and electrode 1023. One section of the electrode 1022 is used for collecting human body bioelectricity signals, and the other section of the electrode 1023 is used for sending out electric signals to the human body so as to eliminate environmental noise, so that the electric signals collected by the electrode 1022 are more accurate. The signal acquired by the ECG device electrodes 102 is a first electrical signal. The finger electrode 600 may be used for finger input of electrical signals of the other hand. The signal collected by the finger electrode 600 is a second electrical signal. The data processing module 502 in the smart watch 10 may obtain the electrocardiogram data according to the first electrical signal collected by the ECG device electrode 102 and the second electrical signal collected by the finger electrode 600, and the smart watch 10 may display the electrocardiogram on the display screen 107A.

As shown in fig. 8A, the finger electrode 600 provided in the embodiment of the present application is no longer provided on the crown 300 and the button 400. The finger electrodes 600 are located on the sides or top of the smart watch 10. The area of the finger electrode 600 for contacting the skin of a finger may be greater than or equal to 30 square millimeters. The finger electrode 600 can ensure good contact with the skin, improving the acquisition accuracy of electrocardiogram data. In addition, the finger electrode 600 provided by the embodiment of the application can be positioned on the side face of the watch, so that the electrocardiogram is displayed through the display screen 107A while the finger is pressed on the finger electrode 600 for testing, and a user can watch the measurement result while testing.

In this embodiment, the data processing module 502 may be implemented by a PCB. The material of the finger electrode 600 may be stainless steel, titanium alloy, conductive ceramic, or other conductive functional material, which is not limited in this embodiment.

The connection structure of the finger electrode 600 in the embodiment of the present application will be described below. The finger electrodes 600 may be electrically connected to the PCB702 through spring plates, or may be electrically connected to the PCB702 through screws, which are described below.

(1) The finger electrodes 600 may be electrically connected to the PCB702 via spring tabs

Referring to fig. 9A to 9C, fig. 9A to 9C are schematic structural views of electrical connection between the finger electrode and the PCB according to an embodiment of the present disclosure. As shown in fig. 9A, the PCB702 further includes a spring 602, and an insulating support 601 is further included between the finger electrode 600 and the casing 101. The insulating support 601 may be used to isolate the electrical connection between the finger electrode 600 and the housing 101 to reduce the charge on the housing 101 from affecting the electrocardiographic data measurement. That is, when the finger electrode 600 is mounted on the smart watch, the insulating holder 601 keeps the finger electrode 600 from contacting the case 101.

In the embodiment of the present application, the housing 101 and the ECG device electrode 102 may be integrally sintered or may be separately sintered. As shown in fig. 9B, the housing 101 and the ECG device electrodes 102 are integrally sintered. For example, a blastocyst corresponding to the housing 101 and a blastocyst corresponding to the ECG device electrode 102 are prepared. The integrated structure of the housing 101 and the ECG device electrode 102 is obtained by overlapping and integrally sintering a blank corresponding to the housing 101 and a blank corresponding to the ECG device electrode 102.

As shown in fig. 9C, the housing 101 and the ECG device electrodes 102 are separately sintered. For example, the housing 101 and the ECG device electrodes 102 are sintered, ground, and bonded together, respectively.

As shown in fig. 9B and 9C, when finger electrode 600 and insulating holder 601 are assembled to front housing assembly 703, finger electrode 600 may abut spring 602 so that finger electrode 600 is electrically connected to PCB 702.

(2) The finger electrodes 600 may be electrically connected to the PCB702 via screws

Referring to fig. 10, fig. 10 is a schematic structural view of an electrical connection between a finger electrode and a PCB according to an embodiment of the present disclosure. As shown in fig. 10, the PCB702 is further provided with screws 603, and an insulating support 601 is further included between the finger electrode 600 and the casing 101. The insulating support 601 may be used to isolate the electrical connection between the finger electrode 600 and the housing 101 to reduce the charge on the housing 101 from affecting the electrocardiographic data measurement.

As shown in fig. 10, when the finger electrode 600 and the insulating support 601 are assembled to the front case assembly 703 by screws 603, the finger electrode 600 can be electrically connected to the PCB702 via the screws 603.

In the embodiment of the present application, the housing 101 and the ECG device electrode 102 may be integrally sintered, or may be separately sintered, similar to the description of FIG. 9B and FIG. 9C.

In this embodiment of the application, the finger electrode 600 is not limited to be electrically connected to the PCB702 through the elastic piece 602 or the screw 603, and may also be electrically connected in other manners, such as conductive glue, a buckle, and the like, which is not limited in this embodiment of the application.

The ECG device electrode 102, the charging coil 500, and the finger electrode 600 on the smart watch are taken as examples in the embodiment of the present application for introduction, but the design provided in the embodiment of the present application is not limited to the smart watch, and may also be used in other wearable devices, head-mounted devices, smart phones, PDAs, or notebook computers. In addition, the ECG device electrode 102 is taken as an example in the embodiment of the present application, but the material and the structural design of the ECG device electrode 102 may also be used in other modules in the electronic device or in devices or modules other than the electronic device, and the embodiment of the present application does not limit this.

The above description is only a specific implementation of the embodiments of the present application, but the scope of the embodiments of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be subject to the protection scope of the claims.