Method for displaying body surface fetal electrocardiogram monitoring information and related device

Abstract

The application discloses a display method of body surface fetal electrocardio monitoring information, a portable body surface fetal electrocardio monitoring device and a storage medium. The method comprises the following steps: acquiring an electrocardio signal, wherein the electrocardio signal comprises a fetal electrocardio signal; obtaining corresponding heart rate information based on the electrocardio signal; and displaying signal related information and the heart rate information in linkage on the same screen, wherein the signal related information comprises at least one of the electrocardio signal and quality information of the electrocardio signal. Through the above method, the user can analyze the heart rate information conveniently.

Description

Technical Field

[0001] This application relates to the field of signal processing, and in particular to a method for displaying fetal electrocardiogram (ECG) monitoring information on the body surface, a portable fetal ECG monitoring device on the body surface, and a storage medium. Background Technology

[0002] Surface electrocardiogram monitoring is a technique that involves placing electrocardiogram electrodes on the surface of the body of the target without invasive procedures to monitor the electrocardiogram signal.

[0003] During monitoring, it is usually necessary to display the fetal electrocardiogram (ECG) information on the body surface on a screen for users (such as medical staff) to observe and analyze. However, the existing methods for displaying fetal ECG information on the body surface are not conducive to user observation and analysis. Summary of the Invention

[0004] This application provides a method for displaying fetal electrocardiogram (ECG) monitoring information on the body surface, a portable fetal ECG monitoring device on the body surface, and a storage medium, which can solve the problem that existing methods for displaying fetal ECG monitoring information on the body surface are not conducive to user observation and analysis.

[0005] To address the aforementioned technical problems, this application provides a method for displaying fetal electrocardiogram (ECG) monitoring information on the body surface. The method includes: acquiring an ECG signal, including a fetal ECG signal; obtaining corresponding heart rate information based on the ECG signal; and displaying the signal-related information and the heart rate information simultaneously on the same screen, wherein the signal-related information includes at least one of the ECG signal and ECG signal quality information.

[0006] To solve the above-mentioned technical problems, another technical solution adopted in this application is: to provide a portable fetal electrocardiogram monitoring device, which includes a processor and a memory connected to the processor, wherein the memory stores program instructions; the processor is used to execute the program instructions stored in the memory to implement the above method.

[0007] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide a storage medium storing program instructions that, when executed, can implement the above-mentioned method.

[0008] Through the above method, this application can acquire electrocardiogram (ECG) signals, obtain corresponding heart rate information based on the ECG signals, and display the heart rate information and signal-related information (at least one of the ECG signal and ECG signal quality information) simultaneously on the screen. Compared to simply displaying the heart rate information on the screen, this method allows users to analyze the heart rate information in conjunction with signal-related information. Attached Figure Description

[0009] Figure 1This is a flowchart illustrating an embodiment of the method for displaying fetal electrocardiogram monitoring information on the body surface according to this application;

[0010] Figure 2 This is a schematic diagram showing different heart rate information and electrocardiogram signals on the same time axis on the same screen; Figure 3 This is a flowchart illustrating Embodiment 2 of the method for displaying fetal electrocardiogram monitoring information on the body surface according to this application;

[0011] Figure 4 This is a schematic diagram showing the electrocardiogram signal and its corresponding quality information on the same screen along the same time axis.

[0012] Figure 5 This is a flowchart illustrating Embodiment 3 of the method for displaying fetal electrocardiogram monitoring information on the body surface according to this application;

[0013] Figure 6 yes Figure 5 A detailed flowchart of the S33 process;

[0014] Figure 7 This is a schematic diagram illustrating how the present application displays impedance status indication information, electrode placement position indication information, and device battery power information on the screen;

[0015] Figure 8 This is a schematic diagram of the structure of an embodiment of the electronic device of this application;

[0016] Figure 9 This is a schematic diagram of the structure of an embodiment of the storage medium of this application. Detailed Implementation

[0017] 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 a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] The terms "first," "second," and "third" used in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments without conflict.

[0020] Figure 1 This is a flowchart illustrating a method for displaying fetal electrocardiogram (ECG) monitoring information on the body surface, as described in Embodiment 1 of this application. It should be noted that if substantially the same result is obtained, this embodiment is not necessarily identical. Figure 1 The illustrated process sequence is limited. For example... Figure 1 As shown, this embodiment may include:

[0021] S11: Acquire ECG signal.

[0022] Electrocardiogram (ECG) signals include fetal ECG signals.

[0023] During the monitoring process, electrodes can be placed on the pregnant woman's body surface to obtain maternal and fetal electrocardiogram (ECG) signals collected by the electrodes. Then, methods such as blind source separation are used to separate and process the maternal and fetal ECG signals to obtain the maternal ECG signal and the fetal ECG signal.

[0024] The electrocardiogram (ECG) signals referred to in this step may include only fetal ECG signals. Alternatively, they may include both maternal and fetal ECG signals, allowing the user to subsequently analyze the fetal ECG signals in conjunction with the maternal ECG signals.

[0025] In addition, to reduce surface impedance, the pregnant woman's skin can be prepared before placing the electrodes. Alternatively, considering that the maternal and fetal electrocardiogram (ECG) signals directly acquired by the electrodes may be subject to interference (baseline drift interference, power frequency interference, electromyographic interference, etc.), the maternal and fetal ECG signals can be filtered through an adaptive filter before analysis.

[0026] There can be multiple electrodes, and different electrodes can be placed on different parts of the pregnant woman's body surface during monitoring. This results in multiple channels of electrocardiogram (ECG) signals obtained by placing electrodes on the pregnant woman's body surface. For example, six electrodes can be placed on the pregnant woman's body surface to measure ECG signals from six electrode channels. For simplicity, this application will only describe an ECG signal from one channel.

[0027] S12: Obtain the corresponding heart rate information based on the electrocardiogram signal.

[0028] Heart rate information corresponding to each ECG signal can be obtained based on each ECG signal. If the ECG signal only includes the fetal ECG signal, the fetal heart rate information can be obtained based on the fetal ECG signal; if the ECG signal also includes the maternal ECG signal, the maternal heart rate information can also be obtained based on the maternal ECG signal.

[0029] Heart rate information consists of multiple heart rate values ​​corresponding to different time points. There are various ways to obtain heart rate values. This application only illustrates an example where each heart rate value is obtained based on the time interval between the peaks of two adjacent QRS waveforms of an electrocardiogram (ECG) signal. The peaks of the QRS waveform of the ECG signal can be determined; based on the time interval between each pair of adjacent peaks, the heart rate values ​​corresponding to those two peaks are obtained. Specifically, the ECG signal can be passed through differential and integral filters to obtain the ECG envelope signal, and the peak value of the ECG envelope signal is the peak value of the QRS waveform. Furthermore, in this method, the time corresponding to each heart rate value is the time interval between the two adjacent QRS peaks.

[0030] S13: Display signal-related information and heart rate information on the same screen.

[0031] Among them, signal-related information includes at least one of electrocardiogram (ECG) signal and ECG signal quality information.

[0032] Electrocardiogram (ECG) signal quality information can be used to represent the quality status of the ECG signal. Related heart rate information and signal-related information can be displayed on the same screen (in different display areas or on different pages) along a timeline. This includes linking fetal heart rate information with its corresponding signal-related information, and linking maternal or infant heart rate information with its corresponding signal-related information.

[0033] Alternatively, different heart rate information and different signal-related information can be displayed on the same screen along the same timeline. Specifically, the mother's heart rate information and the fetal heart rate information are different heart rate information, and the signal-related information corresponding to the mother's heart rate information and the signal-related information corresponding to the fetal heart rate information are different signal-related information.

[0034] Alternatively, different heart rate information and different signal-related information can be displayed on the same screen along the same timeline.

[0035] It is understood that the present application involves displaying heart rate information and signal-related information on a screen, that is, drawing heart rate information graphs and signal-related information graphs on the screen based on heart rate information and signal-related information, respectively.

[0036] Since users often need to observe the latest heart rate in the heart rate information graph together with the corresponding QRS waveform of the electrocardiogram signal, the QRS waveform corresponding to the latest heart rate value can be highlighted.

[0037] In one specific implementation, the QRS waveform corresponding to the latest obtained heart rate value can be drawn at the center of a preset display area, and waveforms in the ECG signal located before and after the QRS waveform can be drawn before and after the center position. The preset display area is a display area used to display the ECG signal. This method ensures that the latest obtained heart rate value is always displayed at the center of the preset display area, making it convenient for the user to view.

[0038] In another specific implementation, the QRS waveform corresponding to the latest obtained heart rate value can be plotted at the end position of a preset display area, and waveforms in the ECG signal preceding the QRS waveform can be plotted before the end position. This ensures that the latest obtained heart rate value is always displayed at the end position of the preset display area, making it convenient for the user to view.

[0039] In another specific implementation, the QRS waveform corresponding to the latest obtained heart rate value in the electrocardiogram signal graph can be marked. The marking methods can include changing the color, adding a box / circle / dot, or bolding the image.

[0040] Figure 2 This is a diagram illustrating how different heart rate information and ECG signals can be displayed on the same screen along the same time axis. For example... Figure 2 As shown, maternal heart rate information A, fetal heart rate information B, maternal electrocardiogram signal A', and fetal electrocardiogram signal B' are displayed on the same time axis.

[0041] In addition, users can issue selection commands on the screen via touch, voice, and buttons. If a user's selection command is detected, the area indicated by the selection command can be magnified on the screen.

[0042] Understandably, when a user selects an area on the screen, it means the user needs to focus on the area indicated by the selection. In this case, the proportion of that area can be enlarged to highlight the information in that area.

[0043] Through the implementation of this embodiment, this application can acquire electrocardiogram (ECG) signals, obtain corresponding heart rate information based on the ECG signals, and display the heart rate information and signal-related information (at least one of the ECG signal and ECG signal quality information) simultaneously on the same screen. Compared to simply displaying the heart rate information on the screen, this method allows users to easily analyze the heart rate information by combining it with signal-related information.

[0044] Based on the information displayed on the screen, including the quality information of the electrocardiogram (ECG) signal, the quality information of the ECG signal needs to be obtained before S13.

[0045] The method for obtaining the quality information of the electrocardiogram (ECG) signal before step S13 is described below. The ECG signal consists of multiple signal values ​​corresponding to different time points. The quality information of the ECG signal includes the quality information of each signal value. The quality information of each signal value can be determined based on the differences between its preceding and neighboring signal values.

[0046] Figure 3 This is a flowchart illustrating Embodiment Two of the method for displaying fetal electrocardiogram monitoring information on the body surface according to this application. It should be noted that if substantially the same result is obtained, this embodiment is not necessarily identical. Figure 3 The illustrated process sequence is limited. For example... Figure 3 As shown, prior to S13, this embodiment may include:

[0047] S21: Take the time point corresponding to each signal value in the electrocardiogram signal as the target time point.

[0048] S22: Determine the quality information of the signal value at the target time point based on the differences between several historical signal values.

[0049] Among them, some historical signal values ​​can be the signal values ​​of the first time period in the electrocardiogram signal before the target time point.

[0050] The number of first maximum signal values ​​within a first proportion range of the first maximum signal value in the first time period can be used as a representation of the difference between several historical signal values, i.e., the signal value quality information at the target time point.

[0051] The quality level of a signal value at a target time point can be determined based on the range of values ​​representing the differences between several historical signal values. For example, if the value falls within the range corresponding to "poor," the quality level of the signal value at the target time point can be determined as "poor"; if it falls within the range corresponding to "medium," the quality level can be determined as "medium"; and if it falls within the range corresponding to "excellent," the quality level can be determined as "excellent."

[0052] For example, if it falls within the range corresponding to the lowest quality level (poor), the quality level of the signal value at the target time point can be directly determined as the lowest quality level (poor); otherwise, the quality level of the signal value at the target time point can be further determined based on the heart rate value in the second time period before the target time point in the heart rate information.

[0053] It is understandable that the length of the second time period is greater than or equal to that of the first time period. The signal quality at the target time point can be determined based on the continuity of heart rate values ​​within the second time period in the heart rate information.

[0054] For example, the average difference between every two adjacent heart rate values ​​within the second time period can be obtained; based on the range of the average value, the quality information level of the signal value at the target time point can be determined. The average difference between every two adjacent heart rate values ​​within the second time period can characterize the continuity of heart rate values ​​within the second time period.

[0055] When displaying ECG signal quality information on the screen, different quality levels are indicated by different symbols. For example, different quality levels are indicated by vertical line segments of different colors or widths. Specifically, a red vertical line segment of length 1 represents a quality level of "poor," a yellow vertical line segment of length 2 represents a quality level of "medium," and a green vertical line segment of length 3 represents a quality level of "excellent." Figure 4 This is a schematic diagram showing the electrocardiogram (ECG) signal and its corresponding quality information on the same screen along the same time axis. Here, C represents the quality information of the mother's ECG signal, D represents the quality information of the fetal ECG signal, C' represents the mother's heart rate information, and D' represents the fetal heart rate information.

[0056] In addition, it can detect the continuous time length corresponding to quality information with a poor grade. If the continuous time length corresponding to the poor grade quality information is greater than a preset time length, the portion of the heart rate information corresponding to that continuous time length is marked. This informs the user that this portion has been severely interfered with and is of low reliability.

[0057] Through the implementation of this embodiment, this application can obtain the signal quality of the corresponding time point in the electrocardiogram (ECG) signal based on several historical signal values ​​within a first time period before each time point in the ECG signal, thereby enabling the acquisition of the quality of each signal value in the ECG signal.

[0058] Furthermore, considering that the reliability of the measured ECG signal is low when the impedance state of the electrode does not meet the monitoring requirements, the impedance state of the electrode used to acquire the ECG signal can be detected before monitoring is initiated / acquired (S11). Monitoring is initiated when the impedance state meets the monitoring requirements. The method for detecting the impedance state of the electrode used to acquire the ECG signal is described below.

[0059] Figure 5 This is a flowchart illustrating Embodiment 3 of the method for displaying fetal electrocardiogram monitoring information on the body surface according to this application. It should be noted that if substantially the same result is obtained, this embodiment is not necessarily identical. Figure 5 The illustrated process sequence is limited. This embodiment is a further extension of the above embodiment. Figure 5 As shown, this embodiment may include the following steps:

[0060] S31: Obtain at least one type of data for the electrode.

[0061] Among them, at least one type of data includes voltage and / or electrocardiogram signals obtained from electrode pre-acquisition.

[0062] In this step, the ECG signal pre-acquired by the electrodes can be used to detect the impedance state of the electrodes. That is, if at least one type of data includes the ECG signal pre-acquired by the electrodes, the ECG signal can be pre-acquired by the electrodes before the ECG signal for monitoring is obtained by the electrodes, and the impedance state of the electrodes can be detected by the pre-acquired ECG signal.

[0063] S32: Determine whether at least one data point meets the preset requirements.

[0064] The preset requirements may include at least one of the following: the voltage is within a preset voltage range, and / or the difference between the maximum and minimum signal values ​​of the ECG signal pre-acquired by the electrodes within the third time period is within a preset difference range.

[0065] When at least one data point includes voltage, the preset requirement is that the voltage is within a preset voltage range. When at least one data point includes an electrocardiogram (ECG) signal pre-acquired by electrodes, the preset requirement is that the difference between the maximum and minimum signal values ​​of the ECG signal pre-acquired by electrodes within a third time period is within a preset difference range.

[0066] If the voltage is within the preset voltage range, it means the electrode hardware connection is normal. If the difference is within the preset difference range, it means the pre-acquired ECG signal is basically normal, and the next step of testing can proceed. Otherwise, it can be directly determined that the electrode impedance does not meet the monitoring requirements.

[0067] Therefore, if the condition is met, execute S33; otherwise, execute S34.

[0068] S33: Determine the impedance state of the electrodes using the electrocardiogram signals obtained from the electrode pre-acquisition.

[0069] The impedance state of the electrodes can be determined directly using the ECG signals pre-acquired by the electrodes. However, considering that the ECG signals pre-acquired by the electrodes may contain interference (baseline drift interference, power frequency interference, electromyographic interference, etc.), the ECG signals pre-acquired by the electrodes can be filtered before S33 to remove the interference.

[0070] See also Figure 6 S33 may include the following sub-steps:

[0071] S331: Determine the second maximum signal value and the second maximum signal value of the ECG signal obtained from electrode pre-acquisition within the third time period.

[0072] S332: Obtain the number of second maximum signal values ​​within the second proportional range of the second maximum signal value.

[0073] S333: Based on the range of the number of second maximum signal values, determine whether the impedance state of the electrode meets the monitoring requirements.

[0074] The impedance state of an electrode can be categorized into multiple levels, such as poor, medium, and excellent. Each level has a corresponding range. If the number of second maximum signal values ​​falls within the range corresponding to excellent, then the electrode's impedance state meets the monitoring requirements. Otherwise, the electrode's impedance state does not meet the monitoring requirements.

[0075] S34: The impedance state of the electrode does not meet the monitoring requirements.

[0076] The implementation process of S31-S34 will be explained in detail below with an example:

[0077] 1) Obtain the voltage of the electrodes;

[0078] 2) Determine if the voltage is within the preset voltage range;

[0079] 3) If it is within the preset range, the electrode hardware connection is considered normal, and proceed to 4); otherwise, the impedance state of the electrode is considered not to meet the monitoring requirements.

[0080] 4) Acquire the electrocardiogram (ECG) signals obtained from electrode pre-acquisition;

[0081] 5) Determine whether the difference between the maximum and minimum signal values ​​of the ECG signal obtained by the electrode pre-acquisition within the third time period is within the preset difference range;

[0082] 6) If the difference is within the preset range, the ECG signal is considered to be basically normal, and proceed to 7); otherwise, the impedance state of the electrode is considered not to meet the monitoring requirements.

[0083] 7) Obtain the second maximum signal value and the second maximum signal value of the ECG signal obtained from electrode pre-acquisition within the third time period, as well as the number of second maximum signal values ​​within the second proportional range of the second maximum signal value.

[0084] 6) Based on the range of the number of second maximum signal values, determine whether the impedance state of the electrode meets the monitoring requirements.

[0085] In addition, during the process of detecting the impedance state of the electrodes, the status information can be displayed in real time on the screen (impedance detection interface).

[0086] The status information may include at least one of the following: electrode impedance status indication information, electrode placement position indication information, and device battery level information. If the detected electrode impedance status meets the monitoring requirements, the device information will no longer be displayed; otherwise, the device information will continue to be displayed.

[0087] Electrode impedance status indication information can be used to indicate the impedance status of the electrode, allowing users to easily check whether the current impedance status of the electrode meets the monitoring requirements. Electrode impedance status can be divided into three levels: poor, average, and excellent. Different colors can be used to indicate different levels of impedance status. For example, red, yellow, and green can be used to indicate poor, average, and excellent impedance status, respectively. Alternatively, different identifiers can be used to indicate different levels of impedance status. For example, ×, ?, and √ can be used to indicate poor, average, and excellent impedance status, respectively.

[0088] Electrode placement information can be used to indicate the correct position of the electrode on the surface of the target body, making it convenient for users to place the electrode accordingly.

[0089] Device battery power information can be used to indicate the current battery level and expected usage time, making it easier for users to assess whether the monitoring needs are met.

[0090] When the equipment information includes electrode impedance status indication information and electrode placement position indication information, the electrode impedance status indication information and electrode placement position indication information can be displayed separately or combined.

[0091] Figure 7 This diagram illustrates the display of impedance status indication information, electrode placement position indication information, and device battery level information on the screen. In this diagram, E represents the electrode impedance status indication information, F represents the electrode placement position indication information, and G represents the device battery level information. E and F are displayed separately.

[0092] Through the implementation of this embodiment, this application can determine the impedance state of the electrode based on the electrode voltage and / or the electrocardiogram signal pre-acquired by the electrode, so as to start monitoring when the impedance state of the electrode meets the monitoring requirements.

[0093] Figure 8 This is a schematic diagram of an embodiment of the portable fetal electrocardiogram (ECG) monitoring device for external use according to this application. This portable fetal ECG monitoring device can be a device capable of displaying fetal ECG monitoring information on the external surface. It should be noted that the portable fetal ECG monitoring device is small in size and easy to carry, allowing users to perform ECG monitoring anytime, anywhere when needed. Users can be pregnant women themselves, relevant medical personnel, or other individuals with ECG monitoring needs.

[0094] like Figure 8 As shown, it includes a processor 41 and a memory 42 coupled to the processor 41.

[0095] The memory 42 stores program instructions for implementing the methods of any of the above embodiments; the processor 41 executes the program instructions stored in the memory 42 to implement the steps of the above method embodiments. The processor 41 may also be referred to as a CPU (Central Processing Unit). The processor 41 may be an integrated circuit chip with signal processing capabilities. The processor 41 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor may be a microprocessor, or the processor 41 may be any conventional processor.

[0096] In other embodiments, the fetal electrocardiogram monitoring device may also have an alarm module (not shown) for alerting the user when an abnormal electrocardiogram is detected.

[0097] Furthermore, in other embodiments, the fetal electrocardiogram monitoring device may also include a communication module (not shown) and other features to allow the user to communicate with the outside world. For example, the user can communicate with a doctor through the device's communication module to receive professional advice from the doctor.

[0098] Figure 9 This is a schematic diagram of the structure of an embodiment of the computer-readable storage medium of this application. Figure 9 As shown, the computer-readable storage medium 50 of this application embodiment stores program instructions 51, which, when executed, implement the methods provided in the above embodiments of this application. The program instructions 51 can form a program file and be stored in the computer-readable storage medium 50 in the form of a software product, so that a computer device (which may be a personal computer, server, or network device, etc.) or processor can execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned computer-readable storage medium 50 includes various media capable of storing program code, such as a USB flash drive, mobile hard drive, read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk, or terminal devices such as computers, servers, mobile phones, and tablets.

[0099] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0100] 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. The integrated units described above can be implemented in hardware or as software functional units. The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the description and drawings of this application, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for displaying fetal electrocardiogram monitoring information on the body surface, characterized in that, include: Acquire electrocardiogram (ECG) signals; Based on the electrocardiogram signal, the corresponding heart rate information is obtained, which includes the heart rate value at each time point; The quality information of the electrocardiogram (ECG) signal is obtained. The quality information of the ECG signal includes the quality information of the signal values ​​at each time point in the ECG signal. The quality information has multiple levels, and the display labels of the quality information of different levels are different. The signal-related information and the heart rate information are displayed on the same screen along the same time axis. The signal-related information includes the quality information of the electrocardiogram (ECG) signal, or the signal-related information includes the ECG signal and the quality information of the ECG signal. Wherein, the electrocardiogram signal includes the fetal electrocardiogram signal, and the heart rate information includes the fetal heart rate information; or, the electrocardiogram signal includes the fetal electrocardiogram signal and the maternal electrocardiogram signal, and the heart rate information includes the fetal heart rate information and the maternal heart rate information.

2. The method according to claim 1, characterized in that, The acquisition of electrocardiogram signals includes: Acquire the collected maternal and fetal electrocardiogram (ECG) signals, and separate the maternal ECG signal and the fetal ECG signal from the maternal and fetal ECG signals.

3. The method according to claim 2, characterized in that, The quality information of different levels is displayed as vertical line segments of different colors or widths; And / or, the method further includes: If the continuous time length corresponding to the quality information of the fetal electrocardiogram signal with a poor grade is greater than the preset time length, then the portion of the fetal heart rate information corresponding to the continuous time length is marked; if the continuous time length corresponding to the quality information of the maternal electrocardiogram signal with a poor grade is greater than the preset time length, then the portion of the maternal heart rate information corresponding to the continuous time length is marked.

4. The method according to claim 1, characterized in that, Prior to acquiring the electrocardiogram signal, the process includes: The impedance state of the electrodes used to acquire the electrocardiogram (ECG) signal is detected, and the acquisition of the ECG signal begins when the impedance state meets a preset requirement.

5. The method according to claim 4, characterized in that, The method further includes: During the detection of the impedance state, the status information is displayed on the screen in real time; The status information includes at least one of electrode impedance status indication information, electrode placement position indication information, and device battery power information. The electrode impedance status indication information is used to indicate the impedance status of the electrode, the electrode placement position indication information is used to indicate the correct position of the electrode on the body surface of the target to be detected, and the device battery power information is used to indicate the battery power of the device to which the electrode belongs and the expected usage time.

6. The method according to claim 5, characterized in that, The impedance status indication information of the electrode has multiple levels, and the display labels of the impedance status indication information of the electrode are different for different levels. And / or, After displaying the status information on the screen, the method further includes: If the impedance state of the electrode is detected to meet the monitoring requirements, the status information will no longer be displayed. Otherwise, continue displaying the status information.

7. The method according to claim 1, characterized in that, The method further includes: Upon detecting a user's selection command on the screen, the area indicated by the selection command on the screen is magnified and displayed.

8. A portable fetal electrocardiogram monitoring device for body surface, characterized in that, Includes a processor and a memory connected to the processor, wherein, The memory stores program instructions; The processor is configured to execute the program instructions stored in the memory to implement the method of any one of claims 1-7.

9. A storage medium, characterized in that, The storage medium stores program instructions, which, when executed, implement the method as described in any one of claims 1-7.

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