Mobile phone shell and electrocardio acquisition method thereof

Abstract

The invention relates to a mobile phone shell and an electrocardiogram collection method thereof. The mobile phone shell comprises a mobile phone shell body; the electrode module is arranged on the outer surface of the mobile phone shell body, the electrode module comprises a first electrode pair and a second electrode pair, and the first electrode pair and the second electrode pair are symmetrically arranged; the mobile phone shell comprises a mobile phone shell body, an electrode module and an NFC control module, the NFC control module is arranged on the mobile phone shell body, the NFC control module comprises an electrocardio acquisition sub-module and an NFC communication power supply sub-module, the electrocardio acquisition sub-module is electrically connected to the NFC communication power supply sub-module and the electrode module, and the NFC communication power supply sub-module is in communication connection with an external communication device. A battery and Bluetooth do not need to be configured, the size and weight are reduced, and power consumption can be reduced.

Description

Technical Field

[0001] This application relates to the field of bioelectrical signal acquisition and mobile terminal technology, and in particular to a mobile phone case and its electrocardiogram acquisition method. Background Technology

[0002] With increasing public awareness of health and growing demand for chronic cardiovascular disease management, portable electrocardiogram (ECG) monitoring devices are gradually moving from clinical settings to daily use. Currently, mainstream products on the market mainly include disposable ECG patches, smart bracelets, and smartwatches.

[0003] However, in order to maintain continuous operation, such devices usually need to have built-in rechargeable batteries or button batteries, which not only increases the size and weight of the device, but also brings the maintenance burden of regular charging or replacement. In addition, such devices rely on wireless communication protocols such as Bluetooth to transmit ECG data to smartphones, and keeping Bluetooth on continuously increases system power consumption. Summary of the Invention

[0004] This application provides a mobile phone case and its ECG acquisition method, aiming to solve the problem that traditional portable ECG monitoring devices require batteries and wireless communication modules such as Bluetooth, which leads to increased device size and power consumption.

[0005] In a first aspect, embodiments of this application provide a mobile phone case, the mobile phone case comprising:

[0006] The phone case itself;

[0007] An electrode module is disposed on the outer surface of the phone case body. The electrode module includes a first electrode pair and a second electrode pair, wherein the first electrode pair and the second electrode pair are symmetrically arranged.

[0008] An NFC control module is disposed on the phone case body. The NFC control module includes an ECG acquisition submodule and an NFC communication power supply module. The ECG acquisition submodule is electrically connected to the NFC communication power supply module and the electrode module. The NFC communication power supply module is communicatively connected to an external communication device.

[0009] A further technical solution is that the phone case body has a phone receiving cavity and an NFC receiving cavity, the outer surface is located on the side away from the phone receiving cavity, and the NFC receiving cavity and the phone receiving cavity are located on the same side for accommodating the NFC control module.

[0010] A further technical solution is that the first electrode pair includes a first measuring electrode and a first driving electrode, and the second electrode pair includes a second measuring electrode and a second driving electrode, wherein the distance between the first measuring electrode and the first driving electrode is a first distance, the distance between the first measuring electrode and the second driving electrode is a second distance, and the second distance is greater than the first distance.

[0011] A further technical solution is that the NFC control module further includes a driving circuit, which is connected to the ECG acquisition submodule, the first driving electrode, and the second driving electrode.

[0012] A further technical solution is that the ECG acquisition submodule includes an instrumentation amplifier, the input terminal of which is connected to the first measuring electrode and the second measuring electrode, and the output terminal of which is connected to a driving circuit, which is connected to the first driving electrode and the second driving electrode.

[0013] A further technical solution is that the ECG acquisition submodule also includes an interconnected filter circuit and an analog-to-digital converter, with the filter circuit connected to the output of the instrumentation amplifier.

[0014] A further technical solution is that the driving circuit includes an inverting amplifier, a first resistor, a second resistor, a first capacitor, and a second capacitor, wherein the inverting amplifier has an inverting input terminal, a non-inverting input terminal, and an output terminal;

[0015] The inverting input terminal is connected to the common-mode output terminal of the instrumentation amplifier through the first resistor. The second resistor and the first capacitor are connected in parallel between the inverting input terminal and the output terminal. The second capacitor is connected to the first resistor. The non-inverting input terminal is grounded. The output terminal is connected to the first driving electrode and the second driving electrode.

[0016] A further technical solution is that the driving circuit further includes a current-limiting resistor, and the output terminal is connected to the first driving electrode and the second driving electrode through the current-limiting resistor.

[0017] The further technical solution is that the first distance is 1mm-3mm and the second distance is 10mm-30mm.

[0018] Secondly, this application provides a method for electrocardiogram (ECG) acquisition based on a mobile phone case, using the mobile phone case as described above, the method comprising:

[0019] When the target user's left index finger and right index finger simultaneously touch the first electrode pair and the second electrode pair of the phone case, the ECG acquisition submodule is used to collect the target user's ECG information.

[0020] The ECG information is transmitted to an external communication device via an NFC link using the NFC communication power supply module, wherein the NFC communication power supply module supplies power to the ECG acquisition submodule.

[0021] This application provides a mobile phone case and an electrocardiogram (ECG) acquisition method thereof. The mobile phone case includes: a phone case body; an electrode module disposed on the outer surface of the phone case body, the electrode module including a first electrode pair and a second electrode pair, the first electrode pair and the second electrode pair being symmetrically arranged; and an NFC control module disposed on the phone case body, the NFC control module including an ECG acquisition submodule and an NFC communication power supply module, the ECG acquisition submodule being electrically connected to the NFC communication power supply module and the electrode module, and the NFC communication power supply module being communicatively connected to an external communication device.

[0022] This embodiment of the application incorporates an electrode module and an NFC control module on the phone case. The NFC control module includes an ECG acquisition submodule and an NFC communication power supply module. This allows for wireless energy harvesting using the smartphone's own NFC radio frequency field, providing power to the ECG acquisition submodule without the need for a separate battery, reducing size and weight and avoiding the maintenance burden of regular charging or battery replacement for the user. Furthermore, the first and second electrode pairs are symmetrically arranged on the outer surface of the phone case, achieving electrode placement with minimal space within the limited surface area of ​​the case. Users can complete measurements simply by holding the phone normally, making the operation intuitive and ensuring stable contact. In addition, ECG data is directly transmitted back to the smartphone via the NFC link, eliminating the need for manual pairing wireless protocols such as Bluetooth. NFC communication is only activated when the phone is close, resulting in extremely low power consumption. This simplifies the user operation process and avoids battery drain caused by continuously keeping Bluetooth on, improving the user experience. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0026] Figure 1 A schematic diagram of the structure of one embodiment of the mobile phone case provided in this application;

[0027] Figure 2 A schematic diagram of an embodiment of the driving circuit provided in this application;

[0028] Figure 3 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0031] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0034] As used in this specification and the appended claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrases "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0035] With the increasing public awareness of health and the growing demand for early screening of cardiovascular diseases, portable electrocardiogram (ECG) monitoring devices are rapidly expanding from clinical settings to daily health management.

[0036] Currently, the mainstream portable ECG products on the market mainly include disposable ECG patches, smart bracelets, and smartwatches. However, these devices generally have several inherent drawbacks: First, to maintain continuous operation, they usually require built-in rechargeable batteries or button batteries, which not only increases the size and weight of the device but also brings the maintenance burden of regular charging or replacement; Second, most products rely on wireless communication protocols such as Bluetooth to transmit ECG data to smartphones, which involves a cumbersome pairing process, poor connection stability, and the continuous operation of the Bluetooth module significantly increases system power consumption, affecting the phone's battery life; Third, their industrial design often follows the style of consumer electronics, lacking the professionalism and credibility that medical instruments should have, making it difficult to meet users' psychological expectations for the seriousness of health monitoring functions.

[0037] Against this backdrop, phone cases, as standard accessories for smartphones, are considered ideal carriers for integrating health sensing functions due to their inherent portability, high-frequency usage scenarios, and close physical contact with the human body. However, embedding a medical-grade ECG acquisition system into a phone case still faces multiple technical bottlenecks: First, smartphones integrate high-density radio frequency, digital, and power circuits, creating an extremely complex electromagnetic environment that can easily cause severe interference to microvolt-level ECG signals; second, limited by the size and ergonomics of the case, the usable area on the back of the phone case is limited, making it difficult to arrange the multiple separate electrodes required by traditional ECG lead systems, and achieving effective and stable electrode contact within a small space becomes a key challenge; finally, using independent power supply or additional wireless communication solutions (such as Bluetooth) not only increases system complexity and cost but may also damage the phone's battery life and user experience due to continuous power consumption.

[0038] To address the aforementioned issues, this application provides a mobile phone case and its ECG acquisition method, which eliminates the need for a battery, reduces size and weight, and eliminates the need for manually paired wireless protocols such as Bluetooth, thereby reducing power consumption.

[0039] See Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the mobile phone case provided in this application. The mobile phone case includes a mobile phone case body, an electrode module, and an NFC control module.

[0040] The electrode module is disposed on the outer surface of the phone case body, and the electrode module includes a first electrode pair and a second electrode pair, wherein the first electrode pair and the second electrode pair are symmetrically arranged.

[0041] The NFC control module is disposed on the phone case body. The NFC control module includes an ECG acquisition submodule and an NFC communication power supply module. The ECG acquisition submodule is electrically connected to the NFC communication power supply module and the electrode module. The NFC communication power supply module is communicatively connected to an external communication device.

[0042] Among them, external communication equipment can be Figure 1 Smartphones in China.

[0043] This embodiment incorporates an electrode module and an NFC control module on the phone case. The NFC control module includes an ECG acquisition submodule and an NFC communication power supply module. This allows for wireless energy harvesting using the smartphone's own NFC radio frequency field, providing power to the ECG acquisition submodule without the need for a separate battery. This reduces size and weight, avoiding the maintenance burden of regular charging or battery replacement for users. Furthermore, the first and second electrode pairs are symmetrically positioned on the outer surface of the phone case, allowing for electrode arrangement within a limited surface area. Users can perform measurements simply by holding the phone normally, making operation intuitive and contact stable. In addition, ECG data is directly transmitted back to the smartphone via the NFC link, eliminating the need for manual pairing wireless protocols like Bluetooth. NFC communication is only activated when the phone is near, resulting in extremely low power consumption. This simplifies user operation and avoids battery drain caused by continuously using Bluetooth, improving the user experience.

[0044] In some possible implementations, the phone case body has a phone housing cavity and an NFC housing cavity, the outer surface is located on the side opposite to the phone housing cavity, and the NFC housing cavity and the phone housing cavity are located on the same side for accommodating the NFC control module.

[0045] By setting an NFC housing cavity inside the phone case to embed the NFC control module, while the electrode module is set on the outer surface away from the phone housing cavity, i.e. the back, the coupling distance between the module and the phone's NFC antenna is shortened, improving wireless power supply and communication efficiency, while avoiding openings or protrusions on the outer surface of the phone case, keeping the appearance flat and simple.

[0046] In some possible implementations, the first electrode pair includes a first measuring electrode and a first driving electrode, and the second electrode pair includes a second measuring electrode and a second driving electrode, wherein the distance between the first measuring electrode and the first driving electrode is a first distance, the distance between the first measuring electrode and the second driving electrode is a second distance, and the second distance is greater than the first distance.

[0047] The first measuring electrode and the first driving electrode are physically close to each other to form a first electrode pair for right-hand contact, and the second measuring electrode and the second driving electrode are physically close to each other to form a second electrode pair for left-hand contact.

[0048] In some possible implementations, the first distance is 1mm-3mm and the second distance is 10mm-30mm.

[0049] Thus, by setting the distance between the first measuring electrode and the first driving electrode, i.e. the first distance, to 1mm-3mm, a user's single finger can simultaneously cover an electrode pair. For example, the right index finger can simultaneously contact the first measuring electrode (RA) and the first driving electrode (DRL1), and the left index finger can simultaneously contact the second measuring electrode (LA) and the second driving electrode (DRL2).

[0050] In addition, the distance between the first measuring electrode and the second driving electrode, i.e. the second distance, is set to 10mm-30mm. This can prevent the user from touching three electrodes from two different electrode pairs at the same time with a single finger in a normal grip state. For example, if the right index finger can touch the first measuring electrode (RA), the first driving electrode (DRL1), and the second driving electrode (DRL2) at the same time, it will cause the electrode pairing relationship to be confused, thereby compromising the accuracy of ECG signal acquisition.

[0051] Based on this, the first distance is set to 1mm-3mm and the second distance is set to 10mm-30mm. This ensures reliable contact between a single finger and a single electrode pair, while effectively isolating electrical crosstalk between adjacent electrode pairs, thus ensuring that the ECG acquisition system can work accurately and stably.

[0052] like Figure 2 As shown, the specific positional distribution of the four electrodes contained in the electrode module can be set as follows: Figure 2As shown, the back of the phone case is rectangular, with the first electrode pair at the top left corner and the second electrode pair at the top right corner.

[0053] The first electrode pair is located in the upper left area of ​​the back of the phone case (with the top of the phone facing up and the back facing the user when the user holds it), and the second electrode pair is located in the upper right area of ​​the back of the phone case. The two electrode pairs are symmetrical about the longitudinal central axis of the phone case.

[0054] In some possible implementations, the NFC control module further includes a control unit (MCU) for receiving and processing signals output by the analog-to-digital converter.

[0055] In some possible implementations, the NFC control module further includes a driving circuit connected to the ECG acquisition submodule, the first driving electrode, and the second driving electrode.

[0056] The driving circuit is a right leg driving circuit, which simultaneously drives two driving electrodes (the first driving electrode and the second driving electrode) to inject an anti-phase driving signal into the human body to suppress common-mode interference.

[0057] In some possible implementations, the ECG acquisition submodule includes an instrumentation amplifier, the input of which is connected to the first measuring electrode and the second measuring electrode, and the output of which is connected to a drive circuit, which is connected to the first drive electrode and the second drive electrode.

[0058] In some possible implementations, the instrumentation amplifier can be a low-power, high-precision amplifier (such as the INA333).

[0059] In some possible implementations, the ECG acquisition submodule further includes an interconnected filter circuit and an analog-to-digital converter, the filter circuit being connected to the output of the instrumentation amplifier.

[0060] In some embodiments, the filtering circuit may include a filtering network consisting of a 10kΩ resistor and a 2.2nF capacitor, a 0.5Hz high-pass filter, and a 150Hz low-pass filter.

[0061] For example, the electrode signals of the first measuring electrode (RA) and the second measuring electrode (LA) can be amplified by an instrumentation amplifier after passing through an input filter network consisting of a 10kΩ resistor and a 2.2nF capacitor. The amplified signal then passes through a 0.5Hz high-pass filter and a 150Hz low-pass filter, and is finally converted to digital by an on-chip analog-to-digital converter (ADC).

[0062] See Figure 2In some possible implementations, the driving circuit includes an inverting amplifier, a first resistor, a second resistor, a first capacitor, and a second capacitor, wherein the inverting amplifier has an inverting input terminal, a non-inverting input terminal, and an output terminal;

[0063] The inverting input terminal is connected to the common-mode output terminal of the instrumentation amplifier through the first resistor. The second resistor and the first capacitor are connected in parallel between the inverting input terminal and the output terminal. The second capacitor is connected to the first resistor. The non-inverting input terminal is grounded. The output terminal is connected to the first driving electrode and the second driving electrode.

[0064] In some possible implementations, the driving circuit further includes a current-limiting resistor, and the output terminal is connected to the first driving electrode and the second driving electrode through the current-limiting resistor.

[0065] like Figure 2 As shown, Figure 2 The operational amplifier in the circuit is an inverting amplifier. The first resistor R1 is 1MΩ, the second resistor R2 is 1MΩ, the first capacitor C1 is 22pF, the second capacitor C2 is 10pF, the current limiting resistor is 2.2MΩ, and V_cm is the common-mode output terminal.

[0066] In this way, the inverting amplifier can obtain the common-mode signal from the reference terminal of the instrumentation amplifier, amplify it by inversion (gain of -20 times), and then drive the first driving electrode (DRL1) and the second driving electrode (DRL2) simultaneously through a 2.2MΩ safety current-limiting resistor.

[0067] By setting a current-limiting resistor, the safety of using a phone case can be improved, preventing the risk of electric shock.

[0068] In some possible implementations, the phone case body is made of a semi-transparent frosted material.

[0069] Because of its semi-transparent nature, light can pass through partially, which, together with the internal LED indicator (if any) or electrode position markings (such as silkscreen markings), allows users to intuitively identify the electrode areas to be touched. At the same time, the frosted surface provides moderate friction, effectively preventing fingers from slipping during measurement and ensuring stable and full contact between the electrodes and the skin, thereby improving the stability and quality of ECG signal acquisition.

[0070] Furthermore, compared to metal materials (which shield NFC radio frequency fields, hindering wireless power supply and communication) or carbon fiber materials (which are conductive and may introduce electromagnetic interference or form parasitic loops), translucent frosted materials are usually non-conductive polymer materials (such as PC, TPU, etc.), which have good penetration and compatibility with NFC electromagnetic fields and weak ECG signals, ensuring NFC power supply efficiency, communication reliability, and anti-interference performance of ECG acquisition.

[0071] In some possible implementations, the NFC control module can use the ST25DV series chip. Its energy acquisition pin outputs rectified voltage, which is then regulated to 3.3V by an LDO to power the entire ECG acquisition system and the low-power MCU. The MCU is responsible for controlling the acquisition process and performing digital filtering and preprocessing on the acquired data. Then, the data is written to the storage area of ​​the NFC chip through the I2C interface. The smartphone APP reads this data through NFC and displays and analyzes it.

[0072] Based on the mobile phone case provided in the above embodiments, this application also provides a method for electrocardiogram (ECG) acquisition based on the mobile phone case, the method comprising:

[0073] Step 110: When the target user's left index finger and right index finger simultaneously touch the first electrode pair and the second electrode pair of the phone case, the ECG acquisition submodule is used to acquire the target user's ECG information.

[0074] Step 120: The ECG information is transmitted to an external communication device via an NFC link using the NFC communication power supply module, wherein the NFC communication power supply module supplies power to the ECG acquisition submodule.

[0075] This embodiment incorporates an electrode module and an NFC control module on the phone case. The NFC control module includes an ECG acquisition submodule and an NFC communication power supply module. This allows for wireless energy harvesting using the smartphone's own NFC radio frequency field, providing power to the ECG acquisition submodule without the need for a separate battery. This reduces size and weight, avoiding the maintenance burden of regular charging or battery replacement for users. Furthermore, the first and second electrode pairs are symmetrically positioned on the outer surface of the phone case, allowing for electrode arrangement within a limited surface area. Users can perform measurements simply by holding the phone normally, making operation intuitive and contact stable. In addition, ECG data is directly transmitted back to the smartphone via the NFC link, eliminating the need for manual pairing wireless protocols like Bluetooth. NFC communication is only activated when the phone is near, resulting in extremely low power consumption. This simplifies user operation and avoids battery drain caused by continuously using Bluetooth, improving the user experience.

[0076] Based on the above embodiments, the ECG acquisition method for mobile phone cases provided in this application mainly includes the following:

[0077] 1) The user opens the ECG acquisition application on their smartphone and brings the phone close to the NFC area of ​​the phone case to activate the system;

[0078] 2) The user simultaneously touches the first electrode pair with the index finger of his right hand and simultaneously touches the second electrode pair with the index finger of his left hand;

[0079] 3) The ECG acquisition submodule starts working under the power supply of the NFC communication electronic module to acquire the user's ECG signal;

[0080] 4) The drive circuit operates synchronously to suppress common-mode interference;

[0081] 5) The collected ECG data is processed and then transmitted to a smartphone via an NFC link;

[0082] 6) Smartphone applications display, analyze, and store ECG data.

[0083] In a typical application scenario, the user holds the phone in a landscape orientation: the right index finger simultaneously contacts the first electrode pair (including RA and DRL1) located on the left side of the phone case, and the left index finger simultaneously contacts the second electrode pair (including LA and DRL2) located on the right side.

[0084] In this state, the ECG acquisition system is activated, and the acquired real-time ECG signal is processed and transmitted to the smartphone via the NFC link, where the ECG waveform is dynamically displayed on the screen.

[0085] To enhance the interactive experience, the mobile application can highlight the contact area of ​​the corresponding electrode on the screen to guide the user to place their finger correctly and ensure effective signal acquisition.

[0086] Thus, this application employs an innovative symmetrical electrode layout: two measuring electrodes (RA, LA) are paired with one driving electrode (DRL1, DRL2) respectively, forming a left-right symmetrical first electrode pair and second electrode pair. Users only need to cover the corresponding electrode pairs with their index fingers to naturally complete the ECG signal acquisition operation. The entire system obtains all its operating power from the smartphone via NFC technology and uses the same NFC link to transmit the acquired ECG data back to the phone in real time. It requires no built-in battery and does not rely on additional wireless modules such as Bluetooth, significantly simplifying the usage process and reducing power consumption.

[0087] At the same time, the right leg drive circuit synchronously drives the two drive electrodes DRL1 and DRL2 to construct a dual-side common-mode feedback path, effectively suppressing common-mode interference.

[0088] Corresponding to the above-described ECG acquisition method for mobile phone cases, this application also provides an ECG acquisition device for mobile phone cases. This ECG acquisition device for mobile phone cases includes a unit for executing the above-described ECG acquisition method for mobile phone cases, and can be configured in terminals such as desktop computers, tablet computers, and laptops.

[0089] like Figure 3As shown in the figure, this application provides a computer device including a processor 111, a communication interface 112, a memory 113, and a communication bus 114, wherein the processor 111, the communication interface 112, and the memory 113 communicate with each other through the communication bus 114.

[0090] Memory 113 is used to store computer programs;

[0091] In one embodiment of this application, when the processor 111 executes the program stored in the memory 113, it implements the ECG acquisition method for a mobile phone case provided in any of the foregoing method embodiments, including:

[0092] When the target user's left index finger and right index finger simultaneously touch the first electrode pair and the second electrode pair of the phone case, the ECG acquisition submodule is used to collect the target user's ECG information.

[0093] The ECG information is transmitted to an external communication device via an NFC link using the NFC communication power supply module, wherein the NFC communication power supply module supplies power to the ECG acquisition submodule.

[0094] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program may be stored in a storage medium, which is a computer-readable storage medium. The computer program is executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0095] Therefore, this application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the ECG acquisition method for a mobile phone case as provided in any of the foregoing method embodiments, including:

[0096] When the target user's left index finger and right index finger simultaneously touch the first electrode pair and the second electrode pair of the phone case, the ECG acquisition submodule is used to collect the target user's ECG information.

[0097] The ECG information is transmitted to an external communication device via an NFC link using the NFC communication power supply module, wherein the NFC communication power supply module supplies power to the ECG acquisition submodule.

[0098] The storage medium is a physical, non-transient storage medium, such as a USB flash drive, external hard drive, read-only memory (ROM), magnetic disk, or optical disk, or any other physical storage medium capable of storing program code. The computer-readable storage medium can be non-volatile or volatile.

[0099] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For example, the division of each unit is merely a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0101] The steps in the methods of this application embodiment can be adjusted, merged, or deleted according to actual needs. The units in the apparatus of this application embodiment can be merged, divided, or deleted according to actual needs. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0102] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application.

[0103] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0104] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0105] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mobile phone case, characterized in that, The phone case includes: The phone case itself; An electrode module is disposed on the outer surface of the phone case body. The electrode module includes a first electrode pair and a second electrode pair, wherein the first electrode pair and the second electrode pair are symmetrically arranged. An NFC control module is disposed on the phone case body. The NFC control module includes an ECG acquisition submodule and an NFC communication power supply module. The ECG acquisition submodule is electrically connected to the NFC communication power supply module and the electrode module. The NFC communication power supply module is communicatively connected to an external communication device.

2. The method according to claim 1, characterized in that, The phone case body has a phone housing cavity and an NFC housing cavity. The outer surface is located on the side away from the phone housing cavity. The NFC housing cavity and the phone housing cavity are located on the same side and are used to house the NFC control module.

3. The method according to claim 1, characterized in that, The first electrode pair includes a first measuring electrode and a first driving electrode, and the second electrode pair includes a second measuring electrode and a second driving electrode. The distance between the first measuring electrode and the first driving electrode is a first distance, and the distance between the first measuring electrode and the second driving electrode is a second distance, wherein the second distance is greater than the first distance.

4. The method according to claim 3, characterized in that, The NFC control module further includes a driving circuit, which is connected to the ECG acquisition submodule, the first driving electrode, and the second driving electrode.

5. The method according to claim 1, characterized in that, The ECG acquisition submodule includes an instrumentation amplifier. The input terminal of the instrumentation amplifier is connected to the first measuring electrode and the second measuring electrode. The output terminal of the instrumentation amplifier is connected to a driving circuit, which is connected to the first driving electrode and the second driving electrode.

6. The method according to claim 5, characterized in that, The ECG acquisition submodule also includes an interconnected filter circuit and an analog-to-digital converter, with the filter circuit connected to the output of the instrumentation amplifier.

7. The method according to claim 1, characterized in that, The driving circuit includes an inverting amplifier, a first resistor, a second resistor, a first capacitor, and a second capacitor. The inverting amplifier has an inverting input terminal, a non-inverting input terminal, and an output terminal. The inverting input terminal is connected to the common-mode output terminal of the instrumentation amplifier through the first resistor. The second resistor and the first capacitor are connected in parallel between the inverting input terminal and the output terminal. The second capacitor is connected to the first resistor. The non-inverting input terminal is grounded. The output terminal is connected to the first driving electrode and the second driving electrode.

8. The method according to claim 7, characterized in that, The driving circuit further includes a current-limiting resistor, and the output terminal is connected to the first driving electrode and the second driving electrode through the current-limiting resistor.

9. The method according to claim 1, characterized in that, The first distance is 1mm-3mm, and the second distance is 10mm-30mm.

10. A method for collecting electrocardiogram (ECG) data using a mobile phone case, characterized in that, The method, using a phone case as described in any one of claims 1-9, comprises: When the target user's left index finger and right index finger simultaneously touch the first electrode pair and the second electrode pair of the phone case, the ECG acquisition submodule is used to collect the target user's ECG information. The ECG information is transmitted to an external communication device via an NFC link using the NFC communication power supply module, wherein the NFC communication power supply module supplies power to the ECG acquisition submodule.

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