ECG acquisition system, method and wearable device

Abstract

This invention relates to the field of electrocardiogram (ECG) acquisition, and provides an ECG acquisition system, method, and wearable device. The system includes: multiple electrode arrays; a processor for comparing characteristic parameters of pre-scan ECG signals acquired through different electrode arrays, and selecting a target electrode array from the multiple electrode arrays based on the comparison results; and an ECG scanning unit for controlling the target electrode array to acquire ECG signals. This invention uses a flexible electrode array to scan multiple channels of ECG signals to select suitable leads, and automatically acquires high-quality ECG signals for monitoring through the selected electrode array leads, enabling comfortable and unobtrusive monitoring of ECG vital signs at any time.

Description

Technical Field

[0001] This invention relates to the field of electrocardiogram (ECG) acquisition technology, and more particularly to an ECG acquisition system, method, and wearable device. Background Technology

[0002] An electrocardiogram (ECG) records the heart's electrical activity in real time, providing crucial information for detecting various heart diseases. A 12-lead ECG is currently the standard ECG used to diagnose many heart diseases, excluding arrhythmias; however, obtaining a 12-lead ECG is not easy.

[0003] Currently, wearable devices (such as ECG vests) and wearable 12-lead ECG devices have very high requirements for fit to eliminate the error caused by loose ECG electrodes. Moreover, these devices significantly impact patients' daily lives, offering a very poor comfort experience. ECG patches are a relatively comfortable long-term dynamic ECG acquisition device among existing options; however, ECG patches require gel electrodes to be attached to the chest, which carries the risk of allergies over extended periods. Furthermore, to maintain comfort, only small batteries can be used, resulting in poor battery life and limited real-time data transmission capabilities. Summary of the Invention

[0004] This invention provides an electrocardiogram (ECG) acquisition system, method, and wearable device to solve the technical problems of limited and inaccurate ECG acquisition in existing ECG acquisition schemes.

[0005] This invention provides an electrocardiogram (ECG) acquisition system, comprising:

[0006] Multiple electrode arrays;

[0007] The processor is configured to compare characteristic parameters of ECG pre-scan signals acquired through different electrode arrays, and select a target electrode array from the plurality of electrode arrays based on the comparison results.

[0008] An electrocardiogram (ECG) scanning unit is used to control the target electrode array to acquire ECG signals.

[0009] According to an electrocardiogram (ECG) acquisition system provided by the present invention, the processor performs the following operations for each ECG pre-scan signal before comparing the characteristic parameters of ECG pre-scan signals acquired through different electrode arrays:

[0010] Based on the sampling frequency and time window of the ECG pre-scan signal, determine the number of data points to be collected within the time window when acquiring the ECG pre-scan signal;

[0011] Based on the amplitude and phase of the ECG pre-scan signal and the number of data points collected, the energy values ​​of the ECG pre-scan signal in different preset frequency ranges are determined, and the energy values ​​are used as characteristic parameters of the ECG pre-scan signal.

[0012] According to an electrocardiogram (ECG) acquisition system provided by the present invention, the amplitude and phase of the ECG pre-scan signal are determined based on the number of acquired data points and the fundamental frequency of the ECG pre-scan signal.

[0013] According to an electrocardiogram (ECG) acquisition system provided by the present invention, the calculation model for determining the energy value of the ECG pre-scan signal in different preset frequency ranges based on the amplitude and phase of the ECG pre-scan signal and the number of acquired data points is as follows: Wherein, kf0 is the amplitude and phase of the ECG pre-scan signal, N is the number of data points collected, CH(n) is the ECG pre-scan signal collected at the nth data point, e is a natural constant, j is the imaginary part of a complex number, and k is a positive integer.

[0014] According to an electrocardiogram (ECG) acquisition system provided by the present invention, determining the energy values ​​of the ECG pre-scan signal within different preset frequency ranges includes:

[0015] Determine the time-domain and frequency-domain parameters of the ECG pre-scan signal within different preset frequency ranges;

[0016] Based on the time-domain parameters and the frequency-domain parameters, the energy values ​​of the ECG pre-scan signal are determined in different preset frequency ranges.

[0017] According to an electrocardiogram (ECG) acquisition system provided by the present invention, the plurality of electrode arrays include a plurality of positive electrode arrays and a plurality of negative electrode arrays;

[0018] The comparison of characteristic parameters of ECG pre-scan signals acquired by different electrode arrays, and the selection of a target electrode array from the plurality of electrode arrays based on the comparison results, includes:

[0019] Compare the characteristic parameters of the ECG pre-scanning signals acquired by each of the positive electrode arrays, and determine the positive electrode array with the largest characteristic parameters among the multiple positive electrode arrays as the target positive electrode array based on the comparison results;

[0020] Compare the characteristic parameters of the ECG pre-scanning signals acquired by each of the negative electrode arrays, and determine the target negative electrode array as the negative electrode array with the largest characteristic parameter among the multiple negative electrode arrays based on the comparison results;

[0021] The combination of the target positive electrode array and the target negative electrode array is used as the target electrode array.

[0022] According to an electrocardiogram (ECG) acquisition system provided by the present invention, before comparing the characteristic parameters of ECG pre-scan signals acquired through different electrode arrays, the ECG scanning unit is further configured to control each electrode array to independently acquire ECG pre-scan signals for a preset duration.

[0023] The present invention also provides an electrocardiogram (ECG) acquisition method, applied to the ECG acquisition system described in any of the above claims, comprising:

[0024] Acquire the ECG pre-scan signals collected by each electrode array;

[0025] The characteristic parameters of the ECG pre-scan signals acquired by each of the electrode arrays are compared, and a target electrode array is selected from the electrode arrays based on the comparison results.

[0026] Electrocardiogram (ECG) signals are acquired using the target electrode array.

[0027] The present invention also provides a wearable device, including an electrocardiogram acquisition system as described in any of the preceding claims.

[0028] According to the wearable device provided by the present invention, the wearable device is an electrocardiogram (ECG) acquisition belt, ECG patch, or ECG garment.

[0029] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the electrocardiogram acquisition method as described above.

[0030] The electrocardiogram (ECG) acquisition system, method, and wearable device provided by this invention use a flexible electrode array to scan multiple channels of ECG signals to select suitable leads. The selected leads are then used to automatically acquire high-quality ECG signals for monitoring, allowing for comfortable and unobtrusive monitoring of ECG vital signs at any time. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the wearable device corresponding to the ECG acquisition system provided by the present invention;

[0033] Figure 2 This is a flowchart illustrating the electrocardiogram (ECG) acquisition method provided by the present invention;

[0034] Figure 3This is a schematic diagram of the electrocardiogram (ECG) acquisition device provided by the present invention;

[0035] Figure 4 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0037] Please refer to Figure 1 The present invention provides an electrocardiogram (ECG) acquisition system, comprising:

[0038] Multiple electrode arrays;

[0039] The processor is configured to compare characteristic parameters of ECG pre-scan signals acquired through different electrode arrays, and select a target electrode array from the plurality of electrode arrays based on the comparison results.

[0040] An electrocardiogram (ECG) scanning unit is used to control the target electrode array to acquire ECG signals.

[0041] Specifically, such as Figure 1 As shown, Figure 1 This is a schematic diagram of a wearable device corresponding to the ECG acquisition system provided by the present invention. The ECG acquisition system provided by the present invention includes an electrode array, a processor, and an ECG scanning unit. The electrode array includes at least six electrodes, of which ch1+, ch2+, and ch3+ are positive electrode arrays; and ch1-, ch2-, and ch3- are negative electrode arrays.

[0042] The ECG acquisition system provided by this invention may further include a first multiplexer, a second multiplexer, and an ECG scanning module (including an ECG measurement unit and an ECG scanning unit). The operation mode of the ECG acquisition system provided by this invention is as follows:

[0043] 1. The ECG scanning unit controls the first multiplexer to sequentially switch the three first electrode array channels (i.e., ...) according to the time interval. Figure 1 (positive electrode array in the middle);

[0044] 2. The electrocardiogram (ECG) measurement unit collects data within a fixed time window (i.e., ECG scan signals collected by each electrode array), and calculates characteristic parameters based on the collected ECG scan signals;

[0045] 3. The ECG scanning unit selects the most suitable electrode array channel in the first electrode array based on the calculated characteristic parameters;

[0046] 4. The ECG scanning unit controls the second multiplexer to sequentially switch the three second electrode array channels according to the time interval (i.e., Figure 2 (the negative electrode array in the middle);

[0047] 5. The electrocardiogram (ECG) measurement unit acquires the ECG scan signals collected by each negative electrode array and calculates characteristic parameters based on the acquired ECG scan signals;

[0048] 6. The ECG scanning unit selects the most suitable channel in the second electrode array based on the characteristic parameters, and finally starts the ECG monitoring mode by selecting the positive electrode array and negative electrode array.

[0049] This embodiment uses a selected electrode array lead to automatically acquire high-quality electrocardiogram signals for monitoring, enabling the monitoring of electrocardiogram vital signs in a comfortable and unobtrusive manner at any time.

[0050] In one embodiment, the ECG acquisition system provided in this application, before comparing the characteristic parameters of ECG pre-scan signals acquired through different electrode arrays, performs the following operations for each ECG pre-scan signal:

[0051] Based on the sampling frequency and time window of the ECG pre-scan signal, determine the number of data points to be collected within the time window when acquiring the ECG pre-scan signal;

[0052] Based on the amplitude and phase of the ECG pre-scan signal and the number of data points collected, the energy values ​​of the ECG pre-scan signal in different preset frequency ranges are determined, and the energy values ​​are used as characteristic parameters of the ECG pre-scan signal.

[0053] In one embodiment, the ECG acquisition system provided in this application determines the amplitude and phase of the ECG pre-scan signal based on the number of acquired data points and the fundamental frequency of the ECG pre-scan signal.

[0054] In one embodiment, the ECG acquisition system provided in this application uses the following calculation model to determine the energy value of the ECG pre-scan signal in different preset frequency ranges based on the amplitude and phase of the ECG pre-scan signal and the number of acquired data points: Wherein, kf0 is the amplitude and phase of the ECG pre-scan signal, N is the number of data points collected, CH(n) is the ECG pre-scan signal collected at the nth data point, e is a natural constant, j is the imaginary part of a complex number, and k is a positive integer.

[0055] Specifically, firstly, the first and second multiplexers are adjusted so that the negative electrode array channel is fixed at ch3-, and the positive electrode array channels are sequentially connected to ch1+, ch2+, and ch3+. The electrocardiogram (ECG) measurement unit is then activated sequentially to acquire ECG signals for a period of time (e.g., 10 seconds), obtaining ECG signals CH1[n], CH2[n], and CH3[n] respectively. Then, the signal characteristics in the ECG signals are calculated; these characteristics can be time-domain features, frequency-domain features, or a linear combination of multiple features.

[0056] For CH1[n], CH2[n], and CH3[n], calculate their main electrocardiographic energy intensity characteristics F1, F2, and F3, respectively, as shown in Formulas 1-7:

[0057]

[0058] Formula 1

[0059]

[0060] Formula 2

[0061]

[0062] Formula 3

[0063]

[0064] Formula 4

[0065]

[0066] Formula 5

[0067]

[0068] Formula 6

[0069]

[0070] Formula 7

[0071] Where, sprate is the sampling frequency, f0 is the lowest frequency that can be analyzed within a 10-second time window, and DF1(kf0), DF2(kf0), and DF3(kf0) are the coefficients (including amplitude and phase) corresponding to k times the lowest frequency in the ECG signals of the three positive electrode channels. F1, F2, and F3 are characteristic parameters corresponding to the magnitude of ECG energy. N represents the number of all data points collected by CH1[n], CH2[n], and CH3[n] within 10 seconds.

[0072] This embodiment uses an electrode array screening method to select the electrode array for the leads, and uses the selected electrode array to accurately and imperceptibly monitor the user's electrocardiogram signal.

[0073] Please refer to Figure 2 In one embodiment, the electrocardiogram (ECG) acquisition system provided in this application includes determining the energy values ​​of the ECG pre-scan signal within different preset frequency ranges, which includes:

[0074] Determine the time-domain and frequency-domain parameters of the ECG pre-scan signal within different preset frequency ranges;

[0075] Based on the time-domain parameters and the frequency-domain parameters, the energy values ​​of the ECG pre-scan signal are determined in different preset frequency ranges.

[0076] In one embodiment, the electrocardiogram acquisition system provided in this application includes multiple electrode arrays comprising multiple positive electrode arrays and multiple negative electrode arrays;

[0077] The comparison of characteristic parameters of ECG pre-scan signals acquired by different electrode arrays, and the selection of a target electrode array from the plurality of electrode arrays based on the comparison results, includes:

[0078] Compare the characteristic parameters of the ECG pre-scanning signals acquired by each of the positive electrode arrays, and determine the positive electrode array with the largest characteristic parameters among the multiple positive electrode arrays as the target positive electrode array based on the comparison results;

[0079] Compare the characteristic parameters of the ECG pre-scanning signals acquired by each of the negative electrode arrays, and determine the target negative electrode array as the negative electrode array with the largest characteristic parameter among the multiple negative electrode arrays based on the comparison results;

[0080] The combination of the target positive electrode array and the target negative electrode array is used as the target electrode array.

[0081] Specifically, the ECG scanning unit selects the most suitable electrode channel in the positive electrode array based on the acquired feature parameters. Preferably, the ECG scanning unit selects the electrode array corresponding to the largest feature value among the three ECG features of the positive electrode array as the preferred electrode channel in the positive electrode array. For example, in the embodiment, if F1>F2>F3 in the three-channel signal features over 10 seconds, then ch1+ is selected as the most suitable positive ECG signal channel.

[0082] The selection process for the negative electrode is as follows:

[0083] The ECG scanning unit controls the second multiplexer to sequentially switch the negative electrode array channels. Preferably, after confirming the positive electrode channel, ch1-, ch2-, and ch3- are connected sequentially. The ECG electrometry unit collects data within a fixed time window (ECG pre-scan signal) and calculates characteristic parameters based on the collected ECG pre-scan signal. Preferably, the ECG electrometry unit is started sequentially to collect ECG signals CH4[n], CH5[n], and CH6[n] for 10 seconds, respectively.

[0084] Next, the signal characteristics in the electrocardiogram are calculated. These signal characteristics can be time-domain characteristics, frequency-domain characteristics, or linear combinations of multiple characteristics. Preferably, for CH4[n], CH5[n], and CH6[n], the main electrocardiogram energy intensity characteristics are calculated as F4, F5, and F6, respectively. The calculation formulas are the same as those in formulas 1-7 above, except that F1 in formulas 1 and 5 is replaced with F4, F2 in formulas 2 and 6 is replaced with F5, and F3 in formulas 3 and 7 is replaced with F6.

[0085] The ECG scanning unit selects the most suitable channel in the negative electrode array based on characteristic parameters. Monitoring mode is then activated. Preferably, the ECG scanning unit selects the electrode array corresponding to the largest feature among the three ECG characteristics of the negative electrode array as the preferred negative electrode channel in the negative second electrode array. For example, in a 10-second three-channel signal profile, if F6 > F4 > F5, then ch3- is selected as the most suitable negative ECG signal channel.

[0086] Finally, ECG monitoring was initiated using the selected positive and negative electrode arrays.

[0087] This embodiment uses a selected electrode array lead to automatically acquire high-quality electrocardiogram signals for monitoring, enabling the monitoring of electrocardiogram vital signs in a comfortable and unobtrusive manner at any time.

[0088] In one embodiment, before comparing the characteristic parameters of the ECG pre-scan signals acquired by different electrode arrays, the ECG scanning unit of the ECG acquisition system provided in this application is further configured to control each electrode array to independently acquire ECG pre-scan signals for a preset duration.

[0089] Specifically, such as Figure 1 As shown, during the screening of the positive electrode array, the ECG scanning unit is also used to control each electrode array to independently acquire ECG pre-scan signals for a preset duration.

[0090] In this embodiment, the electrocardiogram (ECG) scanning unit controls each electrode array to collect ECG scanning signals for a certain duration.

[0091] Please refer to Figure 2 This invention provides a method for electrocardiogram (ECG) acquisition, comprising:

[0092] Step 100: Acquire the ECG pre-scan signals collected by each electrode array;

[0093] Step 200: Compare the characteristic parameters of the ECG pre-scan signals acquired by each of the electrode arrays, so as to select a target electrode array from each of the electrode arrays based on the comparison results;

[0094] Step 300: Acquire electrocardiogram (ECG) signals through the target electrode array.

[0095] The electrocardiogram (ECG) acquisition device provided by the present invention is described below. The ECG acquisition device described below can be referred to in correspondence with the ECG acquisition method described above.

[0096] Specifically, the electrocardiogram (ECG) acquisition method provided in this application includes the following steps:

[0097] Step 1: The ECG scanning unit controls the first multiplexer to sequentially switch the channels of each positive electrode array. Step 2: The ECG measurement unit collects data for a fixed time window (ECG scan) and calculates characteristic parameters. Step 3: The ECG scanning unit selects the most suitable channel from each positive electrode array based on the characteristic parameters. Step 4: The ECG scanning unit controls the second multiplexer to sequentially switch the channels of each negative electrode array. Step 5: The ECG measurement unit collects data for a fixed time window (ECG scan) and calculates characteristic parameters. Step 6: The ECG scanning unit selects the most suitable channel from each negative electrode array based on the characteristic parameters. The selected positive and negative electrode arrays are then used to activate the monitoring mode.

[0098] The electrode array described above may be electrodes made of flexible fabric; the first and second multiplexers described above are integrated into the microprocessor; the time range of the "fixed time" described above may be 0.5 to 60 seconds; the characteristic parameters described above may be the standard deviation, percentiles, and average values ​​of time-domain and frequency-domain parameters in the ECG signal segment.

[0099] This embodiment uses a selected electrode array lead to automatically acquire high-quality electrocardiogram signals for monitoring, enabling the monitoring of electrocardiogram vital signs in a comfortable and unobtrusive manner at any time.

[0100] Please refer to Figure 3 The present invention also provides an electrocardiogram (ECG) acquisition device, comprising:

[0101] The ECG pre-scan signal acquisition module 301 is used to acquire the ECG pre-scan signals collected by each electrode array;

[0102] Electrode array selection module 302 is used to compare the characteristic parameters of the ECG pre-scan signals collected by each of the electrode arrays, so as to select a target electrode array from each of the electrode arrays according to the comparison results;

[0103] The electrocardiogram (ECG) signal acquisition module 303 is used to acquire ECG signals through the target electrode array.

[0104] Figure 4 An example is a schematic diagram of the physical structure of an electronic device, such as... Figure 4 As shown, the electronic device may include a processor 410, a communications interface 420, a memory 430, and a communication bus 440. The processor 410, communications interface 420, and memory 430 communicate with each other via the communication bus 440. The processor 410 can call logical instructions stored in the memory 430 to execute the electrocardiogram (ECG) acquisition method.

[0105] Furthermore, the logical instructions in the aforementioned memory 430 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, essentially, or the part that contributes to the prior art, or a 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, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0106] In another aspect, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the electrocardiogram acquisition methods provided by the above methods.

[0107] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0108] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrocardiogram (ECG) acquisition system, characterized in that, include: Multiple electrode arrays; The plurality of electrode arrays includes a plurality of positive electrode arrays and a plurality of negative electrode arrays; The processor is configured to compare characteristic parameters of ECG pre-scan signals acquired through different electrode arrays, and select a target electrode array from the plurality of electrode arrays based on the comparison results. The target electrode array consists of a target positive electrode array and a target negative electrode array. An electrocardiogram (ECG) scanning unit is used to control the target positive electrode array and the target negative electrode array to acquire ECG signals. Before comparing the characteristic parameters of ECG pre-scan signals acquired through different electrode arrays, the processor performs the following operations for each ECG pre-scan signal: Based on the sampling frequency and time window of the ECG pre-scan signal, determine the number of data points to be collected within the time window when acquiring the ECG pre-scan signal; Based on the amplitude and phase of the ECG pre-scan signal and the number of data points collected, the energy values ​​of the ECG pre-scan signal in different preset frequency ranges are determined, and the energy values ​​are used as characteristic parameters of the ECG pre-scan signal.

2. The electrocardiogram (ECG) acquisition system according to claim 1, characterized in that, The amplitude and phase of the ECG pre-scan signal are determined based on the number of data points collected and the fundamental frequency of the ECG pre-scan signal.

3. The electrocardiogram (ECG) acquisition system according to claim 1, characterized in that, The calculation model for determining the energy value of the ECG pre-scan signal in different preset frequency ranges based on the amplitude and phase of the ECG pre-scan signal and the number of data points acquired is as follows: ,in, Let k be the lowest frequency that can be analyzed within the time window, k be a multiple of the lowest frequency, and N be the number of data points collected. Let e ​​be the pre-scanning ECG signal acquired at the nth data point in the acquired data points, where e is a natural constant, j is the imaginary part of the complex number, and k is a positive integer.

4. The electrocardiogram (ECG) acquisition system according to claim 1, characterized in that, Determining the energy values ​​of the ECG pre-scan signal within different preset frequency ranges includes: Determine the time-domain and frequency-domain parameters of the ECG pre-scan signal within different preset frequency ranges; Based on the time-domain parameters and the frequency-domain parameters, the energy values ​​of the ECG pre-scan signal are determined in different preset frequency ranges.

5. The electrocardiogram (ECG) acquisition system according to claim 1, characterized in that, The comparison of characteristic parameters of ECG pre-scan signals acquired by different electrode arrays, and the selection of a target electrode array from the plurality of electrode arrays based on the comparison results, includes: Compare the characteristic parameters of the ECG pre-scanning signals acquired by each of the positive electrode arrays, and determine the positive electrode array with the largest characteristic parameters among the multiple positive electrode arrays as the target positive electrode array based on the comparison results; Compare the characteristic parameters of the ECG pre-scanning signals acquired by each of the negative electrode arrays, and determine the target negative electrode array as the negative electrode array with the largest characteristic parameter among the multiple negative electrode arrays based on the comparison results; The combination of the target positive electrode array and the target negative electrode array is used as the target electrode array.

6. The electrocardiogram (ECG) acquisition system according to claim 1, characterized in that, Before comparing the characteristic parameters of the ECG pre-scan signals acquired through different electrode arrays, the ECG scanning unit is also used to control each electrode array to independently acquire ECG pre-scan signals for a preset duration.

7. A method for acquiring electrocardiogram (ECG) data, characterized in that, The electrocardiogram acquisition system applied to any one of claims 1 to 6 comprises: Acquire the ECG pre-scan signals collected by each electrode array; The characteristic parameters of the ECG pre-scan signals acquired by each of the electrode arrays are compared, and a target electrode array is selected from the electrode arrays based on the comparison results. Electrocardiogram (ECG) signals are acquired using the target electrode array.

8. A wearable device, characterized in that, Includes the electrocardiogram acquisition system as described in any one of claims 1 to 6.

9. The wearable device according to claim 8, characterized in that, The wearable device is an ECG acquisition belt, ECG patch, or ECG garment.

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