Master fetus motion detection method and device, master fetus monitoring equipment and storage medium

Abstract

The invention relates to the technical field of maternal movement detection, and discloses a maternal movement detection method and device, maternal monitoring equipment and a storage medium. The invention provides a maternal-fetal movement detection method, which is applied to maternal-fetal monitoring equipment, and comprises the following steps: collecting an abdominal wall surface electric signal of a maternal body in a detection time period, and detecting an abdominal state of the maternal body; fetal movement signals in the abdominal wall surface electric signals are recognized, and a mother fetal detection result is determined; if the detection time period comprises a target local detection time period, the maternal and fetal detection result in the target local detection time period is corrected, and the target local detection time period is the local detection time period when the abdomen state is in the motion state; and displaying the mother tire detection result in the detection time period. Through the mother fetal movement detection method provided by the invention, the safety of a mother fetal monitoring environment can be ensured, and the fetal movement condition can be reflected more objectively, so that the accuracy of a mother fetal detection result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of biomedical signal processing, and in particular to a maternal-fetal movement detection method, a maternal-fetal monitoring device, and a storage medium. Background Art

[0002] In clinical maternal-fetal monitoring, fetal movement can reflect the condition of the fetus in the uterus. Fetal distress and neonatal hypoxia are accompanied by abnormal fetal movement. Monitoring of fetal movement is conducive to the early detection of fetal risk factors in the uterus.

[0003] In the related art, Doppler ultrasound diagnosis is used to detect fetal movement, including: using a Doppler probe to transmit ultrasound waves of a certain frequency to the mother's abdomen, detecting changes in echo frequency, and observing the movement of the fetus.

[0004] However, the use of Doppler ultrasound diagnostic methods requires professional technicians to frequently adjust the probe to ensure that real fetal movements are captured. The operation requirements are high, and there is still controversy as to whether long-term use of this method for monitoring will harm the fetus.

[0005] Moreover, during the detection process, the mother's abdominal condition may interfere with the fetal movement detection results, which may easily lead to false detection. Summary of the Invention

[0006] In view of this, the present invention provides a maternal-fetal movement detection method, apparatus, maternal-fetal monitoring device and storage medium to solve the problem of inaccurate fetal movement detection.

[0007] In a first aspect, the present invention provides a method for detecting maternal-fetal movement, which is applied to a maternal-fetal monitoring device, and the method comprises:

[0008] During the detection period, electrical signals from the mother's abdominal wall surface are collected and the mother's abdominal condition is detected;

[0009] Identify fetal movement signals in the electrical signals on the abdominal wall surface and determine the maternal and fetal test results;

[0010] If the detection period includes the target local detection period, the maternal and fetal detection results within the target local detection period are corrected; wherein the target local detection period is the local detection period when the abdomen is in motion;

[0011] Displays maternal and fetal test results during the test period.

[0012] The maternal-fetal movement detection method provided in this embodiment detects fetal movement based on electrical signals from the maternal abdominal wall, ensuring a safe maternal-fetal monitoring environment. Furthermore, based on the maternal abdominal condition, the fetal movement signals within the maternal abdomen are detected, enabling the final displayed maternal-fetal detection results to more objectively reflect the actual movement of the fetus in utero, thereby improving the accuracy of fetal movement detection results.

[0013] In an optional embodiment, the electrical signals on the abdominal wall surface are collected by a multi-channel surface electrode patch of a maternal-fetal monitoring device;

[0014] Identify fetal movement signals from electrical signals on the abdominal wall surface and determine maternal and fetal test results, including:

[0015] Determining a target channel based on changes in signal amplitude of the abdominal wall surface electrical signal in each channel; wherein the target channel is a channel where a fetal movement signal is present;

[0016] The number of channels of the target channel is counted, and the maternal and fetal detection results are determined based on the matching results between the channel number and multiple preset channel number ranges.

[0017] The maternal-fetal movement detection method provided in this embodiment determines the fetal movement detection result based on the number of channels with fetal movement signals, which helps to improve detection efficiency.

[0018] In an optional embodiment, determining the target channel based on the signal amplitude change of the abdominal wall surface electrical signal in each channel includes:

[0019] Perform root mean square discrete processing on the abdominal wall surface electrical signals in each channel to obtain the amplitude offset corresponding to each channel;

[0020] Determining the zero-crossing rate of the abdominal wall surface electrical signal of each channel during a detection period according to the electrical signal amplitude of the abdominal wall surface electrical signal in each channel and the corresponding amplitude offset;

[0021] The zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period is compared with the upper threshold and the lower threshold, and the target channel is determined according to the comparison results.

[0022] The maternal-fetal movement detection method provided in this embodiment detects the continuity of the change in the electrical signal amplitude of the electrical signal on the abdominal wall surface of each channel based on the zero-crossing rate, thereby effectively eliminating the interference of other electrical signals and ensuring the accuracy of the fetal movement signal, thereby helping to improve the accuracy of determining the target channel and improving the accuracy of fetal movement detection.

[0023] In an optional embodiment, determining the zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period according to the electrical signal amplitude of the abdominal wall surface electrical signal in each channel and the corresponding amplitude offset includes:

[0024] Comparing the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel with the amplitude offset corresponding to the first channel; wherein the first channel is any channel;

[0025] Setting the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel that is less than or equal to the amplitude offset corresponding to the first channel to zero;

[0026] According to the number of zero crossing points of the first channel and the time length of the detection period, the zero crossing rate of the abdominal wall surface electrical signal of the first channel in the detection period is determined to determine the zero crossing rate of the abdominal wall surface electrical signal of each channel in the detection period.

[0027] The maternal-fetal movement detection method provided in this embodiment can more accurately determine the zero-crossing rate of each channel in the detection period by setting the electrical signal amplitude in the channel that does not meet the amplitude offset corresponding to the channel to zero, thereby further enhancing the accuracy of fetal movement detection.

[0028] In an optional embodiment, the zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period is compared with an upper threshold and a lower threshold, and the target channel is determined according to the comparison results, including:

[0029] If the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is greater than the upper threshold or less than the lower threshold, it is determined that there is no fetal movement signal in the second channel during the detection period; wherein the second channel is any channel;

[0030] If the zero-crossing rate of the second channel in the detection period is less than or equal to the upper threshold and greater than or equal to the lower threshold, it is determined that a fetal movement signal exists in the second channel in the detection period.

[0031] The maternal-fetal movement detection method provided in this embodiment can effectively reduce the occurrence of misidentification, thereby helping to improve the reliability of target channel determination.

[0032] In an optional embodiment, determining the maternal-fetal detection result based on a matching result between the number of channels and a plurality of preset channel number ranges includes:

[0033] Matching the number of channels with a plurality of channel number ranges to determine a target channel number range that includes the number of channels;

[0034] Determining a target fetal movement intensity type corresponding to a target channel number range based on a preset correspondence between the channel number range and the fetal movement intensity type;

[0035] According to the target fetal movement intensity type.

[0036] The maternal-fetal movement detection method provided in this embodiment can quickly determine the fetal movement detection result based on the correspondence between the target channel number and multiple channel number ranges and fetal movement intensity types, which helps to improve detection efficiency.

[0037] In an optional embodiment, the maternal-fetal monitoring device further includes an acceleration sensor;

[0038] Check the mother's abdominal condition, including:

[0039] collecting an acceleration signal of the mother's abdomen by the acceleration sensor, and determining a signal amplitude of the acceleration signal within a detection period;

[0040] Determining an amplitude change of the acceleration signal based on a difference between the signal amplitude and a preset reference amplitude;

[0041] The state of the mother's abdomen is determined based on the amount of amplitude change.

[0042] The maternal-fetal movement detection method provided in this embodiment can effectively improve the accuracy of fetal movement detection, so that the displayed maternal-fetal detection results are more consistent with the actual fetal movement situation.

[0043] In an optional embodiment, determining the maternal abdominal state based on the amplitude change includes:

[0044] When the amplitude change is less than a first preset threshold, determining that the state of the mother's abdomen is a static state;

[0045] When the amplitude change is greater than or equal to the first preset threshold and the signal amplitude change is less than the second preset threshold, it is determined that the mother's abdomen is in a motion state, and the second preset threshold is greater than the first preset threshold.

[0046] In an optional embodiment, determining the maternal abdominal state based on the amplitude change further includes:

[0047] When the amplitude change is greater than or equal to the second preset threshold and lasts longer than the preset time period, the preset reference amplitude is updated, and the mother's abdominal state is continuously detected based on the updated preset reference amplitude.

[0048] In an optional embodiment, the maternal-fetal monitoring device further comprises a display, the display comprising a first display area and a second display area;

[0049] The maternal and fetal detection results include: the fetal movement detection results of the fetal movement signal within the detection period and the abdominal state detection results within the detection period;

[0050] Displays maternal and fetal test results for the test period, including:

[0051] Displaying a fetal movement trace curve in the first display area, the fetal movement trace curve is used to represent the fetal movement detection result of the fetal movement signal within the detection period;

[0052] A maternal movement tracing curve is displayed in the second display area, and the maternal movement tracing curve is used to represent the state detection result of the abdomen state in the detection period.

[0053] The maternal-fetal movement detection method provided in this embodiment displays the fetal movement tracing curve and the maternal movement tracing curve on a display, respectively, and can more intuitively and clearly show the correspondence between the fetal movement status and the abdominal status at the same moment, thereby facilitating medical staff to accurately and comprehensively understand the conditions of the mother and fetus.

[0054] In a second aspect, the present invention provides a maternal-fetal movement detection device, which is applied to a maternal-fetal monitoring device, and the device includes:

[0055] The acquisition module is used to collect electrical signals from the mother's abdominal wall surface during the detection period and detect the mother's abdominal condition;

[0056] The first processing module is used to identify fetal movement signals in the electrical signals on the abdominal wall surface and determine the maternal and fetal detection results;

[0057] a correction module, configured to correct the maternal and fetal detection results within a target local detection period if the detection period includes a target local detection period; wherein the target local detection period is a local detection period when the abdomen is in motion;

[0058] The display module is used to display the maternal and fetal test results during the test period.

[0059] In a third aspect, the present invention provides a maternal-fetal monitoring device, comprising: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to execute the maternal-fetal monitoring device method of the first aspect or any corresponding embodiment thereof.

[0060] In a fourth aspect, the present invention provides a computer-readable storage medium having computer instructions stored thereon, the computer instructions being used to enable a computer to execute the maternal-fetal monitoring device method of the first aspect or any corresponding embodiment thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0062] Figure 1 is a flow chart of a method for detecting maternal and fetal movements according to an embodiment of the present invention;

[0063] Figure 2 is a flow chart of another method for detecting maternal and fetal movements according to an embodiment of the present invention;

[0064] Figure 3 is a schematic diagram of an interface of a display according to an embodiment of the present invention;

[0065] Figure 4 is a structural block diagram of a maternal-fetal movement detection device according to an embodiment of the present invention;

[0066] Figure 5 is a structural block diagram of another maternal-fetal movement detection device according to an embodiment of the present invention;

[0067] Figure 6 Schematic diagram of the hardware structure of the maternal-fetal monitoring device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0068] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0069] In related technologies, when using Doppler ultrasound diagnosis to detect fetal movement, it is necessary to use a Doppler probe to transmit ultrasound waves of a certain frequency to the mother's abdomen, and then observe the movement of the fetus by detecting changes in the echo frequency.

[0070] However, Doppler ultrasound diagnostics require frequent probe adjustments by specialized technicians to ensure accurate detection of fetal movement. This requires high technical expertise, and there is controversy over whether long-term use of this method is harmful to the fetus. Furthermore, the maternal abdominal position can interfere with fetal movement detection during the test, potentially leading to false detections.

[0071] In view of this, an embodiment of the present invention provides a maternal-fetal movement detection method applied to a maternal-fetal monitoring device. The maternal-fetal movement detection method includes: collecting electrical signals from the mother's abdominal wall surface during a detection period, and detecting the mother's abdominal state; identifying fetal movement signals in the electrical signals from the abdominal wall surface, and determining the maternal-fetal detection results; if the detection period includes a target local detection period, correcting the maternal-fetal detection results within the target local detection period; wherein the target local detection period is a local detection period when the abdominal state is in a motion state; and displaying the maternal-fetal detection results of the detection period. In the maternal-fetal movement detection method provided by the present invention, fetal movement detection is performed based on electrical signals from the mother's abdominal wall surface, which can ensure the safety of the maternal-fetal monitoring environment. Moreover, based on the mother's abdominal state, the fetal movement signals during the time when the mother's abdominal state is in a motion state are detected, which can make the maternal-fetal detection results finally displayed more objectively reflect the actual movement of the fetus in the uterus, thereby helping to improve the accuracy of the fetal movement detection results.

[0072] According to an embodiment of the present invention, an embodiment of a method for detecting maternal-fetal movement is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0073] In this embodiment, a method for detecting maternal and fetal movements is provided, which can be used in the above-mentioned maternal and fetal monitoring device. Figure 1 FIG. 1 is a flow chart of a method for detecting maternal and fetal movements according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0074] Step S101: During a detection period, electrical signals from the mother's abdominal wall surface are collected, and the state of the mother's abdomen is detected.

[0075] In an embodiment of the present invention, the abdominal wall surface electrical signal can be understood as a voltage signal. When the fetus's movement in the uterine cavity impacts the uterine wall, the surface electrodes deployed on the maternal-fetal monitoring device can promptly collect the changes in the surface electrical signal, thereby obtaining the desired abdominal wall surface electrical signal. Since the abdominal wall surface electrical signal is a voltage signal generated by the mother and fetus themselves, it does not require external energy stimulation. Therefore, the safety of the mother and fetus can be guaranteed during the process of collecting the abdominal wall surface electrical signal.

[0076] During the actual monitoring process, since the mother's abdominal condition will also affect the authenticity of the fetal movement signal, in order to avoid detecting false positive fetal movements, the mother's abdominal condition is detected during the collection of electrical signals on the abdominal wall surface, so that the fetal movement can be analyzed in a targeted manner in combination with the mother's abdominal condition, thereby improving the accuracy of the fetal movement detection results and avoiding false detection.

[0077] Step S102: identifying the fetal movement signal in the electrical signal on the abdominal wall surface and determining the maternal-fetal detection result.

[0078] In this embodiment of the present invention, fetal movement signals are calculated from electrical signals on the abdominal wall surface. To detect fetal movement within the mother's abdomen, the abdominal wall surface electrical signals are processed for fetal movement signal recognition and analysis. Fetal movement detection is then performed based on the obtained fetal movement signals, and the maternal and fetal detection results are determined based on the maternal abdominal condition.

[0079] Step S103: If the detection period includes the target local detection period, the maternal and fetal detection results in the target local detection period are corrected.

[0080] In an embodiment of the present invention, the target local detection period is a local detection period when the abdomen is in motion. Since the maternal abdomen in motion will affect the fetal movement detection results and may cause false fetal movements, in order to improve the effectiveness of the maternal-fetal movement detection results, during the maternal-fetal detection process, it is identified whether there is a target local monitoring period within the detection period. When it is determined that the target local detection period exists within the detection period, the maternal-fetal detection results within the target local detection period are corrected to effectively eliminate the influence of maternal movement on fetal movement detection, thereby making the final maternal-fetal detection results more scientific and convincing, and effectively improving the accuracy of fetal movement detection.

[0081] Step S104: display the maternal and fetal test results of the test period.

[0082] In an embodiment of the present invention, in order to present the obtained maternal-fetal test results more intuitively, the maternal-fetal test results of the test period are displayed by the maternal-fetal monitoring equipment, so that medical staff can accurately and comprehensively understand the conditions of the mother and fetus, and thus conduct targeted analysis.

[0083] The maternal-fetal movement detection method provided in this embodiment detects fetal movement based on electrical signals from the maternal abdominal wall, ensuring a safe maternal-fetal monitoring environment. Furthermore, based on the maternal abdominal condition, the fetal movement signals within the maternal abdomen are detected, enabling the final displayed maternal-fetal detection results to more objectively reflect the actual movement of the fetus in utero, thereby improving the accuracy of fetal movement detection results.

[0084] In this embodiment, another method for detecting maternal and fetal movements is provided, which can be used in the above-mentioned maternal and fetal monitoring device. Figure 2 FIG. 1 is a flow chart of a method for detecting maternal and fetal movements according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0085] Step S201: During the detection period, collect electrical signals from the mother's abdominal wall surface and detect the mother's abdominal condition. Figure 1 Step S101 of the illustrated embodiment will not be described in detail here.

[0086] Step S202: identifying the fetal movement signal in the electrical signal on the abdominal wall surface and determining the maternal-fetal detection result.

[0087] Specifically, the electrical signal on the abdominal wall surface is collected by a multi-channel surface electrode sheet of a maternal-fetal monitoring device. The above step S202 includes:

[0088] Step S2021 : determining the target channel based on the signal amplitude changes of the abdominal wall surface electrical signal in each channel.

[0089] In the embodiment of the present invention, the target channel is the channel where the fetal movement signal is present. To fully detect the fetal movement within the mother's body and avoid false or missed detections, before performing fetal movement detection, multi-channel surface electrodes are first applied to different locations on the mother's abdominal wall to cover the area of ​​the uterus corresponding to the mother's abdomen. This allows for comprehensive detection of fetal movement. When the fetus's movement within the uterine cavity impacts the uterine wall, changes in the surface electrical signal can be promptly collected, thereby obtaining the desired multi-channel abdominal wall surface electrical signal.

[0090] Since the abdominal wall surface electrical signals collected by each channel correspond to different collection locations, there may be a situation where the fetal movement signal does not exist in the abdominal wall surface electrical signals of some or all channels. In addition, the multi-channel abdominal wall surface electrical signals are obtained by attaching the surface electrode sheets on the corresponding channels to the mother's abdomen. Therefore, during the actual collection process, along with the normal physiological reactions of the mother, the collected abdominal wall surface electrical signals will be mixed with other signals. Therefore, in order to improve the accuracy of fetal movement detection, based on the signal amplitude changes of the abdominal wall surface electrical signals in each channel, each channel is detected to see if there is a fetal movement signal, thereby determining the target channel, so that when fetal movement is subsequently detected through the fetal movement signal in the target channel, the interference of other signals can be reduced.

[0091] In some optional implementations, the above step S2021 includes:

[0092] Step a1: Perform root mean square discrete processing on the abdominal wall surface electrical signal in each channel to obtain the amplitude offset corresponding to each channel.

[0093] In this method, along with the normal physiological response of the mother, the abdominal wall surface electrical signals may include uterine myoelectric signals and / or rectus abdominis myoelectric signals. Uterine myoelectric signals are generated by the uterine muscles, while rectus abdominis myoelectric signals are generated by the rectus abdominis muscles. However, the presence of uterine and rectus abdominis myoelectric signals can affect the detection of fetal movement signals. Therefore, to eliminate interference from uterine and rectus abdominis myoelectric signals, the abdominal wall surface electrical signals in each channel are subjected to root mean square (RMS) discrete processing to obtain the amplitude offset corresponding to each channel. This amplitude offset is then used to filter out interfering signals from the abdominal wall surface electrical signals.

[0094] In one example, to improve the efficiency of determining the amplitude offset, the average value of the abdominal wall surface electrical signal in the current channel during the detection period may be used as the amplitude offset.

[0095] Step a2: determining the zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period according to the electrical signal amplitude of the abdominal wall surface electrical signal in each channel and the corresponding amplitude offset.

[0096] In this method, the zero-crossing rate refers to the frequency or ratio at which a waveform in a signal crosses the zero level. Since the electrical activity of the uterine and rectus abdominis myoelectrical signals is highly persistent when the muscles are activated once, and the peak electrical activity presents a relatively frequent burst waveform, the fetal movement signal does not have these characteristics. Therefore, in order to distinguish the fetal movement signal from the uterine and rectus abdominis myoelectrical signals, the zero-crossing rate of each channel during the detection period is calculated based on the comparison results of the electrical signal amplitude of the abdominal wall surface electrical signal in each channel and the corresponding amplitude offset. Based on the zero-crossing rate, the persistence of the electrical signal amplitude change of the abdominal wall surface electrical signal in each channel is detected, thereby effectively eliminating the interference of other electrical signals and ensuring the accuracy of the fetal movement signal, thereby helping to improve the accuracy of the target channel determination and the accuracy of fetal movement detection.

[0097] In some optional examples, the above step a2 includes:

[0098] Step a21, comparing the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel with the amplitude offset corresponding to the first channel;

[0099] Step a22, setting the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel that is less than or equal to the amplitude offset corresponding to the first channel to zero;

[0100] Step a23, determining the zero-crossing rate of the abdominal wall surface electrical signal of the first channel during the detection period according to the number of zero-crossing points of the first channel and the time length of the detection period, so as to determine the zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period.

[0101] Specifically, the first channel is any one of the multiple channels for collecting the electrical signal of the abdominal wall surface of the mother. Due to the presence of respiratory signals or small disturbances in the electrical signal of the abdominal wall surface, the electrical signal amplitude of the electrical signal of the abdominal wall surface in the first channel may have false zero crossings during the monitoring process. Therefore, in order to eliminate the interference of such signals, the electrical signal amplitude of the electrical signal of the abdominal wall surface in the first channel is compared with the amplitude offset corresponding to the first channel, and the electrical signal whose electrical signal amplitude in the electrical signal of the abdominal wall surface in the first channel is lower than or equal to the amplitude offset corresponding to the first channel is determined, and the electrical signal amplitude of the electrical signal is set to zero to achieve the purpose of screening, and then determine the number of zero crossings of the electrical signal amplitude of the electrical signal of the abdominal wall surface in the first channel.

[0102] The number of zero-crossing points can be calculated using the following formula:

[0103]

[0104] Wherein, L represents the duration of the detection period, and ZC(i) represents the number of zero-crossing points of the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel during the detection period.

[0105] The zero-crossing rate can be calculated using the following formula:

[0106]

[0107] Wherein, ZC(i) represents the number of zero-crossing points of the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel during the detection period, L represents the duration of the detection period, and ZCR(i) represents the zero-crossing rate of the abdominal wall surface electrical signal of the first channel during the detection period.

[0108] The zero-crossing rate of the abdominal wall surface electrical signal in each channel during the detection period is determined respectively, and then the zero-crossing rate of the abdominal wall surface electrical signal in each channel during the detection period is obtained.

[0109] Step a3: compare the zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period with the upper threshold and the lower threshold, and determine the target channel according to the comparison results.

[0110] In this method, in order to determine whether there is a fetal movement signal in each channel, the upper and lower thresholds are set in advance. Among them, the upper threshold is used to eliminate the influence of the electrical signals generated by the activation of other abdominal muscles such as the abdominal uterine myoelectricity and the rectus abdominis on fetal movement detection. The lower threshold is mainly used to eliminate the influence of peak electrical activity caused by occasional point changes on fetal movement recognition. The zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period is compared with the upper and lower thresholds, and the target channel is determined based on the comparison results. It can effectively eliminate the interference of other electrical signals, thereby ensuring the accuracy of the determination of the target channel.

[0111] In an optional example, the above step a3 includes:

[0112] Step a31: if the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is greater than the upper threshold or less than the lower threshold, it is determined that there is no fetal movement signal in the second channel during the detection period;

[0113] Step a32: If the zero-crossing rate of the second channel in the detection period is less than or equal to the upper threshold and greater than or equal to the lower threshold, it is determined that a fetal movement signal exists in the second channel in the detection period.

[0114] Specifically, the second channel is any one of the multiple channels for collecting the electrical signals of the abdominal wall surface of the mother. If the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is less than or equal to the upper threshold and greater than or equal to the lower threshold, it can be determined that the candidate signal is a fetal movement signal. If the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is greater than the upper threshold, it indicates that there is no fetal movement signal in the current channel and no fetal movement occurs. If the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is less than the lower threshold, it indicates that the candidate signal is composed of uterine myoelectric signals and / or rectus abdominis myoelectric signals, and is not a fetal movement signal. Screening fetal movement signals in the above manner can effectively reduce the occurrence of misidentification, thereby helping to improve the reliability of determining the target channel.

[0115] Step S2022: Count the number of target channels, and determine the maternal and fetal detection results based on the matching results between the number of channels and a plurality of preset channel number ranges.

[0116] In an embodiment of the present invention, to determine the intensity of fetal movement during the detection period, the number of target channels is counted, and the intensity of fetal movement during the detection period is specifically marked based on the number of channels. The greater the number of channels, the more obvious the fetal movement intensity.

[0117] To improve detection efficiency, the total number of channels on the multi-channel surface electrode sheet is pre-divided into multiple channel number ranges. The determined channel number is then matched against each channel number range to obtain a matching result. A larger channel number indicates a more pronounced fetal movement intensity. Therefore, based on the determined matching results, the fetal movement detection result within the detection period can be determined.

[0118] In some optional implementations, the above step S2022 includes:

[0119] Step b1: Match the number of channels with multiple channel number ranges to determine a target channel number range that includes the number of channels.

[0120] Step b2: determining a target fetal movement intensity type corresponding to a target channel number range based on a preset correspondence between the channel number range and the fetal movement intensity type.

[0121] Step b3: Determine the maternal-fetal detection result according to the target fetal movement intensity type.

[0122] Specifically, the number of channels is matched with each channel number range respectively, and a target channel number range containing the channel number in multiple channel number ranges is determined. A correspondence between multiple channel number ranges and fetal movement intensity types is established in advance, and then after determining the target channel number range, the fetal movement intensity type corresponding to the target channel number range is used as the fetal movement detection result within the detection period, and then combined with the mother's abdominal state within the detection period, the maternal and fetal detection results are obtained. Among them, the larger the numerical interval corresponding to the channel number range, the more intense the corresponding fetal movement intensity type is. Fetal movement intensity types can include: weak fetal movement, medium intensity fetal movement, or strong fetal movement.

[0123] In one implementation scenario, if the total number of channels on a multi-channel surface electrode sheet is 10, the multiple channel number ranges can be: [1, 3], [4, 6], [7, 10]. The established correspondence between the multiple channel number ranges and fetal movement intensity types is: [1, 3] corresponds to a weak fetal movement intensity type; [4, 6] corresponds to a moderate fetal movement intensity type; and [7, 10] corresponds to a strong fetal movement intensity type. Therefore, if the determined number of channels is 4, [4, 6] is determined as the target channel number range, and the fetal movement detection result of the mother during the detection time period is moderate fetal movement.

[0124] Step S203: If the detection period includes the target local detection period, the maternal and fetal detection results in the target local detection period are corrected. Figure 1 Step S103 of the illustrated embodiment will not be described in detail here.

[0125] Step S204: display the maternal and fetal test results of the test period.

[0126] The maternal-fetal movement detection method provided in this embodiment determines the fetal movement detection results based on the number of channels with fetal movement signals, which helps to improve detection efficiency. Moreover, during the detection process, the obtained maternal-fetal detection results are corrected based on the mother's abdominal state, which can effectively improve the accuracy of fetal movement detection, thereby making the displayed maternal-fetal detection results more consistent with the actual fetal movement situation.

[0127] In an optional embodiment, the maternal-fetal monitoring device further includes an acceleration sensor; the process of detecting the maternal abdominal state is as follows:

[0128] Step c1: collecting the acceleration signal of the mother's abdomen through an acceleration sensor, and determining the signal amplitude of the acceleration signal within a detection period.

[0129] In this method, to monitor the maternal body's motion state during a detection period, an accelerometer is used to monitor the acceleration signal of the maternal abdomen. The maternal abdominal state is determined based on the acceleration signal amplitude during the detection period. The abdominal state includes motion or static state. The accelerometer can be a three-axis accelerometer, which can obtain acceleration signals in the x, y, and z directions. The acceleration signals in each direction are preprocessed to eliminate error signals caused by slight shaking of the maternal body, thereby obtaining an acceleration signal for abdominal state detection.

[0130] In one example, an acceleration sensor may be attached to a pregnant woman to collect acceleration signals.

[0131] Step c2: determining the amplitude change of the acceleration signal based on the difference between the signal amplitude and a preset reference amplitude.

[0132] In this method, in order to facilitate the detection of the mother's abdominal condition, the preset reference amplitude of the acceleration signal is determined based on the mother's posture during fetal movement detection. Using this preset reference amplitude as a reference, it is detected whether the acceleration signal undergoes drastic changes during the detection period, thereby determining the mother's abdominal condition.

[0133] In order to avoid the occurrence of false detection, the signal amplitude of the acceleration signal is subtracted from the preset reference amplitude, and the absolute value of the obtained difference is then taken to obtain the amplitude change of the acceleration signal.

[0134] Step c3: determining the state of the mother's abdomen based on the amplitude change.

[0135] In this way, the degree of change of the acceleration signal can be clearly determined through the amplitude change, and thus when detecting the abdominal state, false detection can be effectively avoided, making the obtained detection results more reliable.

[0136] Specifically, the above step c3 includes:

[0137] Step c31: when the amplitude change is less than a first preset threshold, determining that the state of the mother's abdomen is a static state;

[0138] Step c32: When the amplitude variation is greater than or equal to the first preset threshold and the signal amplitude variation is less than the second preset threshold, it is determined that the mother's abdomen is in a motion state.

[0139] In this method, during acceleration signal acquisition, both maternal breathing and subtle abdominal wall deformation caused by fetal movement can cause changes in the acceleration sensor signal. However, the sensor signal changes caused by fetal movement are significantly weaker than those caused by maternal movement. Therefore, a threshold method can be used to eliminate interference caused by breathing and fetal movement.

[0140] Therefore, a first preset threshold and a second preset threshold are set in advance. The second preset threshold is greater than the first preset threshold. Among them, the first preset threshold can be understood as the minimum amplitude change value of the abdominal state caused by maternal movement. The second preset threshold can be understood as the minimum amplitude change value of the abdominal state caused by a change in maternal posture. The second preset threshold is greater than the first preset threshold. Therefore, when the amplitude change is less than the first preset threshold, it can be considered that the current acceleration signal is an interference caused by weak movements such as maternal breathing or fetal movement. Therefore, the state type of the abdominal state can be determined and marked as a static state. When the amplitude change is greater than or equal to the first preset threshold, and the signal amplitude change is less than the second preset threshold, it can be determined that the change in the abdominal state is due to maternal movement, and the state type of the abdominal state can be marked as a motion state.

[0141] In some optional implementations, the above step c3 further includes:

[0142] Step c33: When the amplitude change is greater than or equal to the second preset threshold and lasts longer than the preset time period, the preset reference amplitude is updated, and the mother's abdominal state is continued to be detected based on the updated preset reference amplitude.

[0143] In this method, when the amplitude change is greater than or equal to the second preset threshold and lasts longer than a preset time period, it indicates that not only the maternal movement has changed, but also the maternal posture has changed. Therefore, the state type of the abdominal state is marked as a motion state. To improve the accuracy of abdominal state detection, the preset reference amplitude is updated based on the current posture of the mother, and the abdominal state is continued to be detected based on the updated preset reference amplitude, thereby achieving the purpose of improving the accuracy of fetal movement detection. The maternal posture can include any of the following postures: lying flat, turning over, standing, or walking, etc.

[0144] In some optional embodiments, in order to ensure the accuracy of fetal movement detection and to ensure that the mother's abdomen is in a static state as much as possible, it is recommended that the mother lie flat before fetal movement monitoring, so that the mother can be in a relaxed and calm state during the maternal-fetal detection process, thereby helping to enhance the accuracy of fetal movement detection.

[0145] The abdominal status detection method provided in this embodiment can effectively improve the accuracy of fetal movement detection, so that the displayed maternal and fetal detection results are more consistent with the actual fetal movement situation.

[0146] In some optional embodiments, the maternal-fetal monitoring device further includes a display, the display including a first display area and a second display area; the maternal-fetal detection results include: fetal movement detection results of fetal movement signals within the detection period and abdominal state detection results within the detection period. Figure 3 As shown, when the maternal and fetal detection results of the detection period are displayed on the display, the fetal movement tracing curve is displayed in the first display area, and the maternal movement tracing curve is displayed in the second display area. Among them, the fetal movement tracing curve is used to represent the fetal movement detection results of the fetal movement signal during the detection period. The maternal movement tracing curve is used to represent the state detection results of the abdominal state during the detection period. It should be noted that Figure 3 The fetal movement and maternal movement curves shown are for illustrative purposes only; their specific behavior depends on the actual maternal and fetal test results. Using fetal movement and maternal movement curves to display maternal and fetal test results during the test period allows for a more intuitive presentation of fetal movement patterns corresponding to different maternal abdominal conditions, enabling medical staff to gain a comprehensive understanding of both the mother and fetus's condition.

[0147] In some optional examples, the fetal movement curve may be represented by four horizontal lines with different amplitudes, for example, 0 for no fetal movement, 1 for weak fetal movement, 2 for moderate fetal movement, and 3 for strong fetal movement. The fetal movement curve is used to reflect the duration and intensity of fetal movement during the detection period.

[0148] In other optional examples, in the maternal motion tracing curve, a high level can be used to indicate that the maternal abdomen is in motion, and a low level can be used to indicate that the maternal abdomen is in a stationary state (the abdominal states corresponding to the high and low levels can be defined by the user and are not limited here). The maternal motion tracing curve can reflect the maternal abdominal time and duration in real time.

[0149] In one example, during the process of recording the fetal movement detection results, the total number of fetal movements during the fetal movement detection process can also be counted, and then the total number of fetal movements can be displayed in a designated area of ​​the first display area (for example, on the left side of the fetal movement recording curve).

[0150] In another example, during the real-time recording of the abdominal state, the corresponding marked abdominal state can be displayed in real time in a designated area of ​​the second display area (e.g., to the left of the maternal motion tracing curve) based on the currently displayed maternal abdominal state. In some optional implementation scenarios, the maternal motion tracing curve can also provide additional analytical information for fetal cardiotocography (CTG) analysis, providing a favorable data foundation so that medical staff can accurately and comprehensively understand the conditions of the mother and fetus.

[0151] In another example, the maternal-fetal test results may be stored in a data buffer of the maternal-fetal monitoring device, so that the maternal-fetal monitoring device can perform offline display, printing, and / or storage functions on the obtained maternal-fetal test results.

[0152] In some optional implementation scenarios, the process of detecting maternal-fetal movement using a maternal-fetal monitoring device may be as follows:

[0153] Multi-channel surface electrodes are attached to different positions of the pregnant woman's abdominal wall in advance to cover the area of ​​the maternal uterus corresponding to the maternal abdominal wall, and an acceleration sensor is tied to the maternal abdomen.

[0154] When the maternal-fetal monitoring device is started, during the detection period, the electrical signals of the abdominal wall surface on the corresponding channels are collected through the multi-channel surface electrodes, and the acceleration signal of the maternal abdomen is collected through the acceleration sensor.

[0155] The abdominal wall surface electrical signals in each channel are pre-processed respectively, and then the presence of fetal movement signals in the abdominal wall surface electrical signals in each channel is detected, and then the target channel is determined. Specifically, the abdominal wall surface electrical signals in each channel are subjected to root mean square discrete processing respectively, and then the amplitude offset of the abdominal wall surface electrical signals in each channel during the detection period is determined. Based on the amplitude offset, the zero-crossing rate of the abdominal wall surface electrical signals during the detection period is detected to determine whether there is a fetal movement signal in the channel. The channel with the fetal movement signal is determined as the target channel, and the number of channels of the target channel is counted, and then the maternal and fetal detection results during the detection period are determined based on the matching results between the number of channels and the preset multiple channel number ranges.

[0156] The acceleration signal collected by the acceleration sensor during the maternal-fetal monitoring period is preprocessed to obtain a processed acceleration signal. The acceleration signal amplitude during the monitoring period is determined. A baseline amplitude of the acceleration signal in the posture is obtained, and then, based on the difference between the acceleration signal amplitude and the baseline amplitude, the amplitude change of the acceleration signal during the monitoring period is determined. Based on the amplitude change, the abdominal condition is detected and a detection result is obtained.

[0157] Determine the local detection period when the abdomen is in motion within the detection period, and determine the local detection period as the target local detection period, and then correct the maternal and fetal detection results within the target local detection period to ensure the accuracy of fetal movement detection, thereby obtaining the final maternal and fetal detection results. Among them, the process of correcting the maternal and fetal detection results within the target local detection period is essentially to re-detect the fetal movement intensity type within the target local detection period, and then obtain the fetal movement detection result corresponding to the target local detection period. Among them, the principle of fetal movement detection within the target local detection period is the same as the principle of fetal movement detection within the detection period, and will not be repeated here.

[0158] The maternal and fetal detection results of the detection period are displayed on the display of the maternal and fetal monitoring device, including: displaying the fetal movement tracing curve in the first display area and displaying the maternal movement tracing curve in the second display area.

[0159] Through the above-mentioned maternal-fetal movement detection method, multi-channel surface electrodes are used to collect multi-channel abdominal wall surface electrical signals, and the real-time fetal movement situation is calculated and analyzed, which can objectively reflect the intrauterine fetal situation. In addition, the method of collecting pregnant women's abdominal electrical signals through multi-channel surface electrodes only receives signals from the mother's abdomen, which will not cause harm to the fetus and can be used to provide a long-term and stable fetal movement monitoring method. By using an acceleration sensor to identify the maternal abdominal state and adding markers and prompts for maternal abdominal movement and fetal movement, additional analysis information can be provided, thereby eliminating the influence of the interference of rectus abdominis electromyography and maternal abdominal movement on fetal movement monitoring, which can further improve the accuracy of fetal movement detection.

[0160] Furthermore, displaying the fetal movement detection results from multiple dimensions can comprehensively reflect the characteristics of fetal movement such as intensity and duration, and can provide more analytical information, thereby effectively helping clinical medical staff to fully understand the fetal condition and reduce the occurrence of misdiagnosis and missed diagnosis.

[0161] Based on the same inventive concept, the present invention also provides a maternal-fetal movement detection device. Figure 4 As shown, the maternal-fetal movement detection device includes: a data acquisition unit 401, a pregnant woman's abdominal wall electrical signal preprocessing unit 402, a fetal movement signal analysis unit 403, a maternal abdominal acceleration signal acquisition unit 404, a maternal movement analysis unit 405 and a result output unit 406.

[0162] The data acquisition unit 401 is used to collect maternal surface electrical signals through multi-channel surface electrodes. The maternal abdominal wall electrical signal preprocessing unit 402 is used to preprocess each maternal surface electrical signal to obtain the abdominal wall surface electrical signal in the corresponding channel. The fetal movement signal analysis unit 403 is used to calculate and classify according to the distribution of signal peak electrical activity, eliminate the influence of other electrical activities, extract the fetal movement signal from the abdominal wall surface electrical signal in each channel, and then determine the fetal movement detection result within the detection period. The maternal abdominal acceleration signal acquisition unit 404 is used to collect acceleration signals in various directions of the pregnant woman's abdomen through an acceleration sensor. The maternal movement analysis unit 405 is used to analyze the maternal abdominal condition during the maternal-fetal monitoring process through the acceleration signals in various directions collected by the acceleration sensor. The result output unit 406 is used to output the obtained maternal-fetal detection results to the monitoring system program of the maternal-fetal monitoring equipment to complete the functions of displaying, printing and storing the analysis results.

[0163] This embodiment also provides a maternal-fetal movement detection device for implementing the above-mentioned embodiments and preferred implementations. Details already described will not be repeated here. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0164] This embodiment provides a maternal-fetal movement detection device, which is applied to maternal-fetal monitoring equipment, such as Figure 5 Shown, including:

[0165] The first processing module 501 is used to collect electrical signals from the mother's abdominal wall surface and detect the mother's abdominal condition during the detection period;

[0166] The second processing module 502 is used to identify fetal movement signals in the electrical signals on the abdominal wall surface and determine the maternal and fetal detection results;

[0167] Correction module 503, configured to correct the maternal and fetal detection results within the target local detection period if the detection period includes the target local detection period; wherein the target local detection period is the local detection period when the abdomen is in motion;

[0168] The display module 504 is used to display the maternal and fetal test results during the test period.

[0169] In some optional embodiments, the abdominal wall surface electrical signal is collected by a multi-channel surface electrode of a maternal-fetal monitoring device, and the second processing module 502 includes: a first detection unit, used to determine the target channel based on the signal amplitude change of the abdominal wall surface electrical signal in each channel; wherein the target channel is a channel where a fetal movement signal exists; a first execution unit, used to count the number of channels of the target channel, and determine the maternal-fetal detection result based on the matching result between the channel number and a preset plurality of channel number ranges.

[0170] In some optional embodiments, the first detection unit includes: a first processing unit, used to perform root mean square discrete processing on the abdominal wall surface electrical signals in each channel to obtain the amplitude offset corresponding to each channel; a second processing unit, used to determine the zero-crossing rate of the abdominal wall surface electrical signals of each channel during the detection period based on the electrical signal amplitude of the abdominal wall surface electrical signals in each channel and the corresponding amplitude offset; a third processing unit, used to compare the zero-crossing rate of the abdominal wall surface electrical signals of each channel during the detection period with the upper threshold and the lower threshold, and determine the target channel according to the comparison result.

[0171] In some optional embodiments, the second processing unit includes: a first matching unit, used to compare the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel with the amplitude offset corresponding to the first channel; wherein the first channel is any channel; a first control unit, used to set the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel that is less than or equal to the amplitude offset corresponding to the first channel to zero; a second control unit, used to determine the zero-crossing rate of the abdominal wall surface electrical signal of the first channel in the detection period based on the number of zero-crossing points of the first channel and the time length of the detection period, so as to determine the zero-crossing rate of the abdominal wall surface electrical signal of each channel in the detection period.

[0172] In some optional embodiments, the third processing unit includes: a first judgment unit, used to determine that there is no fetal movement signal in the second channel during the detection period if the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is greater than the upper threshold or less than the lower threshold; wherein the second channel is any channel; a second judgment unit, used to determine that there is a fetal movement signal in the second channel during the detection period if the zero-crossing rate of the second channel during the detection period is less than or equal to the upper threshold and greater than or equal to the lower threshold.

[0173] In some optional embodiments, the first execution unit includes: a second matching unit, used to match the channel number with multiple channel number ranges to determine a target channel number range including the channel number; a fourth processing unit, used to determine the target fetal movement intensity type corresponding to the target channel number range based on the correspondence between the preset channel number range and the fetal movement intensity type; and a fifth processing unit, used according to the target fetal movement intensity type.

[0174] In some optional embodiments, the maternal-fetal monitoring device also includes an acceleration sensor; the first processing module 501 includes: a second detection unit, used to collect the acceleration signal of the mother's abdomen through the acceleration sensor, and determine the signal amplitude of the acceleration signal within the detection period; a sixth processing unit, used to determine the amplitude change of the acceleration signal based on the difference between the signal amplitude and a preset reference amplitude; and a seventh processing unit, used to determine the state of the mother's abdomen based on the amplitude change.

[0175] In some optional embodiments, the seventh processing unit includes: a second execution unit, used to determine that the mother's abdominal state is a static state when the amplitude change is less than a first preset threshold; a third execution unit, used to determine that the mother's abdominal state is a moving state when the amplitude change is greater than or equal to the first preset threshold and the signal amplitude change is less than a second preset threshold, and the second preset threshold is greater than the first preset threshold.

[0176] In some optional embodiments, the seventh processing unit also includes: a fourth execution unit, which is used to update the preset reference amplitude when the amplitude change is greater than or equal to the second preset threshold and lasts for more than a preset time period, and continue to detect the mother's abdominal state based on the updated preset reference amplitude.

[0177] In some optional embodiments, the maternal-fetal monitoring device also includes a display, the display includes a first display area and a second display area; the maternal-fetal detection results include: the fetal movement detection results of the fetal movement signal within the detection period and the status detection results of the abdominal state within the detection period; the display module includes: a first display unit, used to display the fetal movement tracing curve in the first display area, the fetal movement tracing curve is used to represent the fetal movement detection results of the fetal movement signal within the detection period; the second display unit, used to display the maternal movement tracing curve in the second display area, the maternal movement tracing curve is used to represent the status detection results of the abdominal state within the detection period.

[0178] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0179] The maternal-fetal movement detection device in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0180] The embodiment of the present invention also provides a maternal-fetal monitoring device having the above Figure 5 The maternal-fetal movement detection device shown.

[0181] See also Figure 6 , Figure 6 FIG. 1 is a schematic structural diagram of a maternal-fetal monitoring device provided by an optional embodiment of the present invention. Figure 6 As shown, the maternal-fetal monitoring device includes: one or more processors 10, a memory 20 and a display 30, as well as interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components are connected to each other using different buses and can be installed on a common motherboard or installed in other ways as needed. The processor 10 can process instructions executed in the maternal-fetal monitoring device, including instructions stored in or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. The display 30 is used to display the maternal-fetal detection results obtained by the method shown in the above embodiment. Similarly, multiple maternal-fetal monitoring devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 6 A processor 10 is taken as an example.

[0182] The processor 10 may be a central processing unit, a network processor, or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic, or any combination thereof.

[0183] The memory 20 stores instructions that can be executed by at least one processor 10, so as to enable at least one processor 10 to execute the method shown in the above embodiment.

[0184] The memory 20 may include a program storage area and a data storage area. The program storage area may store an operating system and applications required for at least one function; the data storage area may store data generated based on the use of the maternal-fetal monitoring device. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transient memory, such as at least one disk storage device, flash memory device, or other non-transient solid-state memory device. In some optional embodiments, the memory 20 may optionally include a memory remotely located relative to the processor 10, and these remote memories may be connected to the maternal-fetal monitoring device via a network. Examples of such networks include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0185] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0186] The maternal-fetal monitoring device further includes an input device 40, an output device 50, and a multi-channel surface electrode sheet 60. The multi-channel surface electrode sheet 60 collects multi-channel abdominal wall surface electrical signals. The processor 10, the memory 20, the input device 40, the output device 50, and the multi-channel surface electrode sheet 60 can be connected via a bus or other means. Figure 6 The bus connection is taken as an example.

[0187] The input device 40 can receive input digital or character information and generate key signal input related to user settings and function control of the maternal-fetal monitoring device, such as a touch screen, a keypad, a mouse, a trackpad, a touch pad, an indicator stick, one or more mouse buttons, a trackball, a joystick, etc. The output device 50 can include a display device, an auxiliary lighting device (e.g., an LED), and a tactile feedback device (e.g., a vibration motor). The above-mentioned display device includes but is not limited to a liquid crystal display, a light emitting diode, a display, and a plasma display. In some optional embodiments, the display device can be a touch screen.

[0188] The embodiment of the present invention also provides a computer-readable storage medium. The above-mentioned method according to the embodiment of the present invention can be implemented in hardware, firmware, or implemented as a computer code that can be recorded in a storage medium, or implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and downloaded through a network and will be stored in a local storage medium, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state drive, etc.; further, the storage medium can also include a combination of the above-mentioned types of memory. It can be understood that a computer, a processor, a microprocessor controller or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor or hardware, the method shown in the above embodiment is implemented.

[0189] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for detecting maternal and fetal movement, characterized in that: Applied to maternal-fetal monitoring equipment, the method comprises: During the detection period, collecting electrical signals from the mother's abdominal wall surface and detecting the state of the mother's abdomen; Identifying fetal movement signals in the abdominal wall surface electrical signals to determine maternal and fetal detection results; If the detection period includes a target local detection period, correcting the maternal and fetal detection results within the target local detection period; wherein the target local detection period is a local detection period when the abdomen is in motion; Display the maternal and fetal test results of the test period.

2. The method according to claim 1, characterized in that The abdominal wall surface electrical signal is collected by the multi-channel surface electrode sheet of the maternal-fetal monitoring device; The step of identifying the fetal movement signal in the abdominal wall surface electrical signal and determining the maternal-fetal detection result includes: Determining a target channel based on changes in signal amplitude of the abdominal wall surface electrical signal in each channel; wherein the target channel is a channel where a fetal movement signal exists; The number of channels of the target channel is counted, and a maternal-fetal detection result is determined based on a matching result between the number of channels and a plurality of preset channel number ranges.

3. The method according to claim 2, characterized in that The determining of the target channel based on the signal amplitude changes of the abdominal wall surface electrical signals in each channel includes: Performing root mean square discrete processing on the abdominal wall surface electrical signal in each channel to obtain the amplitude offset corresponding to each channel; determining, according to the electrical signal amplitudes of the abdominal wall surface electrical signals in the respective channels and the corresponding amplitude offsets, the zero-crossing rates of the abdominal wall surface electrical signals in the respective channels during the detection period; The zero-crossing rates of the abdominal wall surface electrical signals of the respective channels during the detection period are compared with the upper threshold and the lower threshold, and the target channel is determined according to the comparison results.

4. The method according to claim 3, characterized in that Determining the zero-crossing rate of the abdominal wall surface electrical signal of each channel during the detection period according to the electrical signal amplitude of the abdominal wall surface electrical signal in each channel and the corresponding amplitude offset includes: Comparing the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel with the amplitude offset corresponding to the first channel; wherein the first channel is any channel; Setting the electrical signal amplitude of the abdominal wall surface electrical signal in the first channel that is less than or equal to the amplitude offset corresponding to the first channel to zero; According to the number of zero crossing points of the first channel and the time length of the detection period, the zero crossing rate of the abdominal wall surface electrical signal of the first channel in the detection period is determined to determine the zero crossing rate of the abdominal wall surface electrical signal of each channel in the detection period.

5. The method according to claim 3, characterized in that The step of comparing the zero-crossing rates of the abdominal wall surface electrical signals of each channel during the detection period with an upper threshold and a lower threshold, and determining the target channel according to the comparison results, includes: If the zero-crossing rate of the abdominal wall surface electrical signal of the second channel during the detection period is greater than the upper threshold or less than the lower threshold, it is determined that there is no fetal movement signal in the second channel during the detection period; wherein the second channel is any channel; If the zero-crossing rate of the second channel in the detection period is less than or equal to the upper threshold and greater than or equal to the lower threshold, it is determined that a fetal movement signal exists in the second channel in the detection period.

6. The method according to claim 2, characterized in that The determining of the maternal-fetal detection result based on the matching result between the number of channels and a plurality of preset channel number ranges includes: matching the number of channels with a plurality of channel number ranges to determine a target channel number range that includes the number of channels; Determining a target fetal movement intensity type corresponding to the target channel number range based on a preset correspondence between the channel number range and the fetal movement intensity type; The maternal-fetal detection result is determined according to the target fetal movement intensity type.

7. The method according to any one of claims 1 to 6, characterized in that: The maternal-fetal monitoring device further includes an acceleration sensor; The detecting of the maternal abdominal condition includes: collecting an acceleration signal of the abdomen of the mother by the acceleration sensor, and determining a signal amplitude of the acceleration signal within the detection period; determining an amplitude change of the acceleration signal based on a difference between the signal amplitude and a preset reference amplitude; The state of the mother's abdomen is determined based on the amplitude change.

8. The method according to claim 7, characterized in that The determining of the maternal abdominal state based on the amplitude change includes: When the amplitude change is less than a first preset threshold, determining that the state of the mother's abdomen is a static state; When the amplitude change is greater than or equal to the first preset threshold and the signal amplitude change is less than the second preset threshold, it is determined that the mother's abdominal state is in motion, and the second preset threshold is greater than the first preset threshold.

9. The method according to claim 8, characterized in that The determining of the maternal abdominal state based on the amplitude variation further includes: When the amplitude change is greater than or equal to the second preset threshold and lasts longer than the preset time period, the preset reference amplitude is updated, and the mother's abdominal state is continued to be detected based on the updated preset reference amplitude.

10. The method according to any one of claims 1 to 6, characterized in that: The maternal-fetal monitoring device further includes a display, wherein the display includes a first display area and a second display area; The maternal-fetal detection result includes: the fetal movement detection result of the fetal movement signal within the detection period and the state detection result of the abdominal state within the detection period; The display of the maternal and fetal test results during the test period includes: displaying a fetal movement tracing curve in the first display area, the fetal movement tracing curve being used to represent a fetal movement detection result of the fetal movement signal within the detection period; A maternal movement tracing curve is displayed in the second display area, where the maternal movement tracing curve is used to represent a state detection result of the abdominal state within the detection period.

11. A maternal-fetal movement detection device, characterized in that: Applied to maternal-fetal monitoring equipment, the device comprises: A first processing module is configured to collect electrical signals from the surface of the mother's abdominal wall during a detection period and detect a state of the mother's abdomen; a second processing module, configured to identify fetal movement signals in the abdominal wall surface electrical signals and determine maternal and fetal detection results; a correction module, configured to correct the maternal and fetal detection results within a target local detection period if the detection period includes a target local detection period; wherein the target local detection period is a local detection period when the abdomen is in motion; The display module is used to display the maternal and fetal detection results during the detection period.

12. A maternal-fetal monitoring device, characterized in that: include: A memory, a processor, and a display, wherein the memory and the processor are communicatively connected to each other, and the display is communicatively connected to the processor; The memory stores computer instructions, and the processor executes the maternal-fetal movement detection method according to any one of claims 1 to 10 by executing the computer instructions; The display is used to display the maternal-fetal detection results of the detection period, and the maternal-fetal detection results are obtained by using the maternal-fetal movement detection method according to any one of claims 1 to 10.

13. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute the maternal-fetal movement detection method according to any one of claims 1 to 10.

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