CN111084639A - Fetal heart rate detection method, device, equipment and readable storage medium - Google Patents
Fetal heart rate detection method, device, equipment and readable storage medium Download PDFInfo
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Abstract
The invention discloses a fetal heart rate detection method, a fetal heart rate detection device, fetal heart rate detection equipment and a readable storage medium, wherein the fetal heart rate detection method comprises the following steps: acquiring abdominal constitution information of a current detection object of a monitor, and determining the working time sequence of a fetal heart probe according to the abdominal constitution information; controlling a fetal heart probe to detect the detection object according to the working time sequence so as to obtain a fetal heart signal; a fetal heart rate is obtained based on the fetal heart signal. The invention improves the monitoring effect and efficiency of the monitor on the fetus.
Description
Technical Field
The invention relates to the technical field of ultrasonic detection, in particular to a fetal heart rate detection method, a fetal heart rate detection device, fetal heart rate detection equipment and a readable storage medium.
Background
The ultrasonic Doppler fetal monitor transmits ultrasonic signals and receives ultrasonic echo signals from the fetal heart, because the fetal heart is in continuous pulsation, the echo signals have certain frequency deviation by utilizing an ultrasonic Doppler principle, the conventional fetal monitor analyzes the frequency deviation value based on the echo signals, and because the frequency deviation value corresponds to the fetal heart pulsation of the fetal heart, the frequency deviation value is utilized to carry out further conversion processing, and the fetal heart rate can be obtained.
When the fetal heart probe of the traditional fetal monitor is used for detection, although the requirement of fetal heart rate detection of most normal pregnant women can be met, for fat pregnant women, the maternal fat is thick, the amniotic fluid is large, the distance from the probe to the fetal heart position often exceeds twenty centimeters, and outside the detection range of the traditional ultrasonic Doppler fetal heart probe, fetal heart Doppler signals can be caused to be absent sometimes, the satisfactory monitoring effect cannot be achieved, or the condition of fetal heart Doppler signals cannot be detected completely, so that the fetal heart rate curve cannot be calculated, and the effect and the efficiency of fetal monitoring are influenced.
At present, more and more obese pregnant women become a technical problem which needs to be solved urgently at present for how to improve the effect and the efficiency of fetal monitoring.
Disclosure of Invention
The invention mainly aims to provide a fetal heart rate detection method, a fetal heart rate detection device, fetal heart rate detection equipment and a computer readable storage medium, and aims to solve the technical problem of how to improve the effect and efficiency of fetal monitoring.
In order to achieve the above object, the present invention provides a fetal heart rate detection method, including the following steps:
acquiring abdominal constitution information of a current detection object of a monitor, and determining the working time sequence of a fetal heart probe according to the abdominal constitution information;
controlling a fetal heart probe to detect the detection object according to the working time sequence so as to obtain a fetal heart signal;
a fetal heart rate is obtained based on the fetal heart signal.
Optionally, the step of determining the working timing sequence of the fetal heart probe according to the abdominal constitution information includes:
inquiring and acquiring a target time sequence corresponding to the abdomen constitution information in a preset mapping table of reference abdomen constitution information and detection time sequence;
acquiring an initial time sequence currently used by a monitor, and judging whether the target time sequence is consistent with the initial time sequence;
and if the target time sequence is not consistent with the initial time sequence, taking the target time sequence as the working time sequence of the fetal heart probe.
Optionally, after the step of controlling the fetal heart probe to detect the detection object in the working time sequence to obtain the fetal heart signal, the method includes:
judging whether the fetal heart signal is effective or not;
and if the fetal heart signal is invalid, updating the working time sequence of the fetal heart probe to form a new working time sequence, and controlling the fetal heart probe to perform fetal heart rate detection on the detection object according to the new working time sequence to obtain an effective fetal heart signal.
Optionally, the step of determining whether the fetal heart signal is valid comprises:
judging whether the signal amplitude of the fetal heart signal is within a preset amplitude interval or not, and if so, judging that the fetal heart signal is effective; and if the signal amplitude of the fetal heart signal is not within the preset amplitude interval, judging that the fetal heart signal is invalid.
Optionally, the working time sequence includes a transmitting time length, a delay waiting time length, and a receiving time length of the ultrasonic wave in each ultrasonic wave transmitting period, and the step of updating the working time sequence of the fetal heart probe to form a new working time sequence includes:
and performing monotonous increase or monotonous decrease on one or more of the transmitting time length, the delay waiting time length and the receiving time length in the working time sequence of the fetal heart probe to form a new working time sequence.
Optionally, the step of performing a monotonic increase or monotonic decrease on one or more of a transmitting time length, a delay waiting time length and a receiving time length in the working sequence of the fetal heart probe to form a new working sequence is followed by:
acquiring the updating times of a working time sequence corresponding to a current time point from a detection starting time node of a current detection object;
judging whether the updating times are more than preset times or not;
if the updating times are larger than the preset times, converting the monotone adjusting trend of the updating of the working time sequence, wherein the monotone adjusting trend comprises monotone reduction and monotone increase;
and if the updating times are less than or equal to the preset times, not performing other processing.
Optionally, if the update times are greater than the preset times, the step of converting the monotone adjustment trend of the update of the working timing sequence includes:
if the updating times are larger than the preset times, acquiring an amplitude difference value of the signal amplitude of the fetal heart signal and a boundary value of a preset amplitude interval, which is obtained in the updating process of the corresponding working time sequence of the current detection object;
if the amplitude difference value is continuously increased, converting the updated monotone adjustment trend of the working time sequence;
and if the amplitude difference value is continuously reduced, continuously updating the working time sequence according to the current monotone adjustment trend.
In order to achieve the above object, the present invention also provides an event processing apparatus including:
the obesity degree judging unit is used for acquiring the abdomen constitution information of the current detection object of the monitor and determining the working time sequence of the fetal heart probe according to the abdomen constitution information;
the fetal heart sensor unit controls a fetal heart probe to detect the detection object according to the working time sequence so as to obtain a fetal heart signal;
and the fetal heart rate unit acquires the fetal heart rate based on the fetal heart signal.
In addition, in order to achieve the above object, the present invention also provides a fetal heart rate detecting apparatus;
the fetal heart rate detection apparatus comprises: a fetal heart probe, a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein:
the computer program, when being executed by the processor, realizes the steps of the fetal heart rate detection method as described above.
In addition, to achieve the above object, the present invention also provides a computer storage medium;
the computer storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the fetal heart rate detection method as described above.
According to the fetal heart rate detection method, the fetal heart rate detection device, the fetal heart rate detection equipment and the readable storage medium, the abdomen constitution information of a current detection object of a monitor is obtained, and the working time sequence of a fetal heart probe is determined according to the abdomen constitution information; controlling the fetal heart probe to detect a detection object according to a working time sequence so as to obtain a fetal heart signal; a fetal heart rate is obtained based on the fetal heart signal. Because before carrying out the detection of foetal rhythm of heart, acquire the belly physique information of test object earlier, the work chronogenesis of fetal heart probe has been adjusted based on current test object's belly physique information, to the difference of distance between different test object belly bodysurfaces to the fetal heart, the work chronogenesis of fetal heart probe is adjusted to adaptability, thereby adjust the detection depth range of fetal heart probe with the detection object of different belly physique information fast accurately, avoid leading to the foetal rhythm of heart to detect inaccurately because of the too big distance between the fetal heart of test object's belly bodysurfaces, and then avoid carrying out the multiple detection to the test object, the guardianship effect and the efficiency of monitor to the foetus have been improved.
Drawings
FIG. 1 is a schematic diagram of a terminal \ device structure of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of a first embodiment of the fetal heart rate detection method of the present invention;
FIG. 3 is a timing diagram of ultrasonic transmission and reception during a period corresponding to a pulse repetition frequency;
FIG. 4 is a flowchart illustrating a fetal heart rate detection method according to a second embodiment of the present invention;
fig. 5 is a schematic diagram of functional modules of an embodiment of the fetal heart rate detection processing apparatus according to the invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention.
The terminal of the embodiment of the invention is fetal heart rate detection equipment.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communications bus 1002, a fetal heart probe 1006. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001. Fetal heart probe 1006 may be a straight probe or a tilted probe, such as a bimorph transverse wave tilted probe. Fetal heart probe 1006 may optionally be a device that transmits and receives ultrasound during an ultrasound testing procedure.
Optionally, the terminal may further include a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WiFi module, and the like. Such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display screen according to the brightness of ambient light, and a proximity sensor that turns off the display screen and/or the backlight when the terminal device is moved to the ear. Of course, the terminal device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which are not described herein again.
Those skilled in the art will appreciate that the terminal structure shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a computer program, wherein the memory 1005 further includes data related to an ultrasound echo signal, a fetal heart signal, and the like.
In the terminal shown in fig. 1, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting the display terminal and performing data communication with the display terminal; and the processor 1001 may be configured to invoke the computer program stored in the memory 1005 and perform the following operations:
acquiring abdominal constitution information of a current detection object of a monitor, and determining the working time sequence of the fetal heart probe according to the abdominal constitution information;
controlling the fetal heart probe to detect a detection object according to a working time sequence so as to obtain a fetal heart signal;
a fetal heart rate is obtained based on the fetal heart signal.
Referring to fig. 2, the present invention provides a fetal heart rate detection method, in a first embodiment of the fetal heart rate detection method, the fetal heart rate detection method includes the following steps:
step S10, acquiring the abdomen constitution information of the current detected object of the monitor, and determining the working time sequence of the fetal heart probe according to the abdomen constitution information;
it should be noted that the fetal heart probe provided by the embodiment of the present invention may be an ultrasound doppler probe in an ultrasound doppler fetal monitor (i.e., the monitor in the embodiment).
The abdominal constitution information may include the body of the test subject such as abdominal fat thickness, amniotic fluid depth, uterine height and/or body mass index of the test subject, and the like. When the fetal heart rate is detected, firstly, the abdomen constitution information of a current detection object needs to be acquired, then the acquired abdomen constitution information is compared with related parameter information preset in the system in advance, and whether the working time sequence of a fetal heart probe in the monitor needs to be adjusted or not is determined according to a comparison judgment result. The abdomen constitution information describes the distance between the abdomen body surface and the fetal heart of the detection object, if the abdomen constitution information comprises three descriptions of shallow, normal and deep abdomen body surface to fetal heart, one or more items of abdomen fat thickness, amniotic fluid depth, uterus height and body quality index of the detection object are comprehensively analyzed to obtain the abdomen constitution information of the detection object.
For example, abdomen constitution information is determined according to the BMI (Body Mass Index) of the test object, and different abdomen constitution information is determined according to the section where the BMI is located, such as BMI including an excessive light section, a normal section and an excessive heavy section. Therefore, the abdominal constitution information corresponding to the too light section is described too shallowly, the abdominal constitution information corresponding to the normal section is described normally, and the abdominal constitution information corresponding to the too heavy section is described too deeply.
The abdomen constitution information of the detection object is obtained, and the abdomen constitution information can be obtained comprehensively according to the obtaining difficulty of one or more of the abdomen fat thickness, the amniotic fluid depth, the uterus height and/or the BMI of the detection object and the weight influencing the distance from the abdomen body surface to the fetal heart, for example, the amniotic fluid depth and the BMI of the detection object have records in a monitor, and the weight influencing the distance from the abdomen body surface to the fetal heart by the amniotic fluid depth and the BMI is larger, so the abdomen constitution information of the detection object is comprehensively determined according to the amniotic fluid depth and the BMI of the detection object.
Step S20, controlling the fetal heart probe to detect the detection object according to the working time sequence to obtain a fetal heart signal;
after the working time sequence of the fetal heart probe is determined according to the abdominal constitution information, the fetal heart probe is controlled to output ultrasonic pulses according to the determined working time sequence, the ultrasonic pulses are converted into ultrasonic signals through an internal system of the monitor based on the ultrasonic pulses, the ultrasonic signals are output to the abdomen of a detection object (such as a pregnant woman), for example, when the fetal heart rate of a fetus in the abdomen of the pregnant woman is detected, the ultrasonic fetal heart probe of the monitor can be placed on the abdomen of the pregnant woman, the ultrasonic signals corresponding to the determined working time sequence are sent to the abdomen of the pregnant woman through the ultrasonic fetal heart probe, the ultrasonic echo signals are received based on the working time sequence determined in the step S10, and the received ultrasonic echo signals are subjected to demodulation processing, amplification processing and filtering processing, so that fetal heart signals are obtained.
In step S30, a fetal heart rate is obtained based on the fetal heart signal.
The manner in which the fetal heart rate is derived may be: and extracting an envelope signal of the fetal heart signal, and calculating the frequency of the envelope signal to obtain the fetal heart rate.
If the obtained fetal heart signal is judged to be valid, the fetal heart probe is indicated to find the fetal heart position, the fetal heart rate can be output, then the fetal heart rate is calculated according to the obtained valid fetal heart signal, and finally the obtained fetal heart rate is output to medical staff through a monitor.
In the embodiment, the working time sequence of the fetal heart probe is determined according to the abdomen constitution information by acquiring the abdomen constitution information of the current detection object of the monitor; controlling the fetal heart probe to detect a detection object according to a working time sequence so as to obtain a fetal heart signal; a fetal heart rate is obtained based on the fetal heart signal. Before the fetal heart rate detection is carried out, the abdominal physique information of a detection object (the detection object is generally a pregnant woman) is obtained firstly, the working time sequence of the fetal heart probe is adjusted based on the abdominal physique information of the current detection object, the working time sequence of the fetal heart probe is adaptively adjusted according to the difference of the distances between the abdominal body surface and the fetal heart of different detection objects (such as the ultrasonic emission time length, the delay waiting time length, the receiving time length and the like), the detection depth range of the fetal heart probe is rapidly and accurately adjusted to adapt to the detection objects of different abdominal physique information, the problem that the fetal heart rate detection is inaccurate due to the overlarge distance between the abdominal body surface and the fetal heart of the detection object is avoided, the detection of the detection object for multiple times is further avoided, and the monitoring effect and the efficiency of the monitor on.
Further, in addition to the first embodiment of the present invention, a second embodiment of the fetal heart rate detection method according to the present invention is provided, which is a refinement of the step of determining the operation timing sequence of the fetal heart probe according to the abdomen constitution information in step S10, and referring to fig. 4, the step of determining the operation timing sequence of the fetal heart probe according to the abdomen constitution information includes:
step S11, inquiring and acquiring a target time sequence corresponding to the abdomen constitution information in a preset mapping table of the reference abdomen constitution information and the detection time sequence;
the reference abdominal physique information is multiple, the setting of the reference abdominal physique information can be completed according to the distribution condition of the abdominal physique information of the preset sample crowd, for example, the abdominal physique information of most parts (such as more than 90%) in the preset sample crowd is three descriptions of too shallow, normal and too deep from the abdominal body surface to the fetal heart, and the reference abdominal physique information comprises three descriptions of too shallow fetal heart, normal fetal heart and too deep fetal heart. Of course, the reference abdomen constitution information and the abdomen constitution information of the detection object are not limited to the text description, and may be pure digital description or digital text combination description as long as the difference of the distance between the abdomen body surface and the fetal heart can be described.
The detection time sequence can be a combination of a plurality of emission time lengths, delay waiting time lengths and receiving time lengths, the one-to-one corresponding relation between each datum abdomen physique information and the detection time sequence can be obtained through a plurality of experiments, namely, a detection object of the datum abdomen physique information in the same mapping relation is used for detecting the heart rate of the fetus, and the heart rate of the fetus obtained by the fetal heart probe applying the same mapping detection time sequence is accurate.
And traversing and searching each datum abdomen constitution information in a mapping table of the detection time sequence to judge whether reference abdomen constitution information matched with the abdomen constitution information of the current detection object (the matching can mean that the information is consistent or the similarity is greater than a preset maximum value) exists, and taking the detection time sequence corresponding to the matched datum abdomen constitution information in the mapping table as a target time sequence.
Step S12, acquiring the current initial time sequence of the monitor, and judging whether the target time sequence is consistent with the initial time sequence;
an initial time sequence currently used by the monitor needs to be acquired, and based on the initial time sequence, the initial time sequence is compared with a target time sequence acquired in a mapping table, so that whether the target time sequence is the same as the initial time sequence or not is judged.
In step S13, if the target timing does not match the initial timing, the target timing is used as the operation timing of the fetal heart probe.
When the initial time sequence is compared with the target time sequence, and the target time sequence is found to be inconsistent with the initial time sequence, the working time sequence of the fetal heart probe needs to be adjusted from the initial time sequence to the target time sequence.
When the initial time sequence is compared with the target time sequence, and the target time sequence is found to be consistent with the initial time sequence, the working time sequence of the fetal heart probe does not need to be changed, and the initial time sequence which is currently used is directly used as the target time sequence.
In this embodiment, after the target time sequence corresponding to the abdomen physical fitness information of the detected object is acquired, the target time sequence is compared with the initial time sequence currently used by the monitor, and only when the target time sequence is inconsistent with the initial time sequence, the working time sequence of the fetal heart probe is adjusted to the target time sequence, that is, the target time sequence is used as the working time sequence of the fetal heart probe, so that the repeated and excessive adjustment of the initial time sequence of the monitor is avoided, and the fetal heart rate of the detected object is detected by the fetal heart probe with a proper working time sequence.
The following is a specific example to help illustrate the technical effects of the present application: for example, the detected object is an obese pregnant woman, the maternal fat of the obese pregnant woman is thick, the amniotic fluid is abundant, the distance from the fetal heart probe to the fetal heart position from the abdominal surface of the obese pregnant woman is usually more than twenty centimeters, and the detection depth of the fetal heart probe of the monitor fetal heart probe is ten-odd centimeters under the conventional initial time sequence, so that the fetal heart rate of a fetus in the picture of the obese pregnant woman cannot be detected; however, if the detection depth of the fetal heart head-up of the monitor is two thirty centimeters according to the obese pregnant woman, for a normal pregnant woman, the fetal heart probe two thirty centimeters below the abdominal body surface detects the rhythm of tissues or organs such as internal organs and abdominal arteries of the pregnant woman, and in this case, the echo signals of the tissues or organs often interfere with the normal fetal heart signals, so that the fetal heart rate monitoring effect of the monitor is affected. Therefore, based on the target time sequence and initial time sequence comparison scheme of this embodiment to the target time sequence that the detection object corresponds carries out fetal heart probe work time sequence control, avoids the pregnant woman fetal heart rate guardianship demand that can't satisfy different belly physique information under the single work time sequence of monitor, need not use other equipment and hardware to detect with the fetal heart rate of supplementary monitor, has practiced thrift medical personnel and detection object time, has reduced equipment and hardware spending.
Further, the operation timing includes a transmission time period, a delay waiting time period and a reception time period of the ultrasonic wave in each ultrasonic wave transmission period,
the step of controlling the fetal heart rate probe to perform fetal heart rate detection on a detection object in a working time sequence so as to obtain a fetal heart signal comprises the following steps:
step A21, controlling the fetal heart probe to continuously transmit ultrasonic signals in a preset preparation time length when each ultrasonic transmission period begins;
step A22, controlling the fetal heart probe to continuously receive ultrasonic echo signals in the receiving duration when waiting for the delay waiting duration;
and A23, carrying out preset post-processing on the received ultrasonic echo signals to obtain fetal heart signals of the detected object.
When each ultrasonic wave needs to go through a preset preparation time period at the beginning of a transmission cycle, the fetal heart probe needs to be controlled to continuously transmit an ultrasonic signal to the abdomen position of the detected object in the subsequent transmission time period, and after the fetal heart probe transmits the ultrasonic signal to the abdomen position of the detected object, the fetal heart probe needs to be controlled to continuously receive an ultrasonic echo signal in the subsequent receiving time period after waiting for the delay waiting time period, and preset post-processing is performed on the received ultrasonic echo signal to obtain the fetal heart signal of the detected object, wherein the post-processing can be demodulation, amplification and filtering processing on the received ultrasonic echo signal to obtain the ultrasonic echo signal of the corresponding detection depth of the fetal heart probe in the current working time sequence. However, the fetal heart reflects the ultrasonic signal emitted by the fetal heart probe, and also transmits the fetal heart sound signal generated by the beat to the probe to be mixed with the ultrasonic echo signal (actually, the beat of the fetal heart changes the parameter of the ultrasonic echo), so the fetal heart single signal needs to be separated from the converted electric signal received by the probe.
Wherein, because the high frequency signal received by the probe is very weak and contains a lot of noise signals, the signal which is obvious and contains the fetal heart sound signal can be obtained only by amplifying and filtering (low-pass). Since the signal amplified at high frequency includes an ultrasonic signal and an audio signal, these signals are detected once. The fetal heart sound signal obtained at this time is an audio signal which is small in amplitude and contains many noise, and therefore must be amplified and filtered (low-pass and band-pass).
In this embodiment, send ultrasonic signal through fetal heart probe, and receive supersound echo signal to obtain fetal heart signal to supersound echo signal through handling, thereby let the user can obtain fetal heart signal fast, can let the monitor follow the supersound echo signal received fast in, distinguish fetal heart signal, thereby feed back to the user.
Further, on the basis of any one of the first or second embodiments of the present invention, a third embodiment of the fetal heart rate detection method of the present invention is provided, and after step S20, the fetal heart rate detection method includes:
step S21, judging whether the fetal heart signal is effective;
because the fetal heart is positioned inside the abdomen of the pregnant woman (namely, the detection object), the ultrasonic pulse wave transmitted to the direction of the abdomen of the pregnant woman can not only reach the abdominal artery of the pregnant woman, but also reach the fetal heart in the abdomen of the pregnant woman. Moreover, because the thickness of the skin and the tissue of the abdomen of each pregnant woman is different, the depths of the abdominal artery and the fetal heart in the abdomen of different pregnant women are different, namely the pulse monitoring depths and the fetal heart monitoring depths of different pregnant women are also different, so that the heartbeat feedback of the fetal heart in the abdomen of the pregnant woman, which is not accurate, of the fetal heart signals obtained by the fetal heart probe in the current working time sequence is easy to occur, and the current detection depth of the fetal heart probe does not cover the fetal heart in the abdomen of the pregnant woman easily. Therefore, after the fetal heart signal is acquired, whether the acquired fetal heart signal is valid or not needs to be judged, when the signal amplitude of the acquired fetal heart signal is not within a preset amplitude interval, the signal intensity of the fetal heart signal is poor and is influenced by a plurality of interference signals, the acquired fetal heart signal is invalid, the position detected by the fetal heart probe is not the position of the fetal heart, and the working time sequence of the fetal heart probe needs to be updated to adjust the detection position. When the signal amplitude of the acquired fetal heart signal is within the preset amplitude interval, the fetal heart signal strength is moderate, and the acquired fetal heart signal is accurate and effective.
Step S22, if the fetal heart signal is invalid, the working time sequence of the fetal heart probe is updated to form a new working time sequence, and the fetal heart rate of the detected object is detected by controlling the fetal heart probe according to the new working time sequence to obtain an effective fetal heart signal;
when the acquired fetal heart signals are judged to be invalid, an invalid alarm prompt can be output on a display terminal connected with the monitor, the working time sequence of the fetal heart probe is updated, so that a new working time sequence is formed, and fetal heart rate detection is continuously performed on a detected object by controlling the fetal heart probe according to the updated new working time sequence, so that fetal heart signals are obtained, wherein the alarm prompt can be a voice prompt or an indication lamp prompt on the basis of the voice prompt. The voice prompt may be a voice broadcast (for example, broadcast the voice content of "signal difference"), or may be a single warning sound (for example, "drip"). The user can quickly know that the currently acquired fetal heart signal is invalid according to the sent alarm prompt, and the working time sequence of the fetal heart probe needs to be adjusted. In addition, if the fetal heart signal is valid, the step of obtaining the fetal heart rate based on the fetal heart signal is executed.
Further, if the obtained fetal heart signal is judged to be valid, the ultrasonic probe is shown to find the fetal heart position, fetal heart beating can be carried out to output the fetal heart signal, then the fetal heart rate is obtained through calculation according to the obtained valid fetal heart signal, and finally the result of the fetal heart rate is output to a user, wherein the output mode can be that the fetal heart rate is displayed on a display interface connected with a monitor display terminal.
In this embodiment, whether the fetal heart rate is determined by judging whether the acquired fetal heart signals are effective or not, and when the acquired fetal heart signals are judged to be invalid, the fetal heart signals can be acquired again by modifying the working time sequence, so that the fetal heart rate is prevented from being generated by invalid fetal heart signals, and the accuracy of fetal heart rate detection is improved.
Specifically, the step of determining whether the fetal heart signal is valid includes:
step S211, judging whether the signal amplitude of the fetal heart signal is in a preset amplitude interval, and if the signal amplitude of the fetal heart signal is in the preset amplitude interval, judging that the fetal heart signal is effective; and if the signal amplitude of the fetal heart signal is not within the preset amplitude interval, judging that the fetal heart signal is invalid.
When judging whether the fetal heart signal is effective, whether the signal amplitude of the fetal heart signal is within a preset amplitude interval needs to be judged, wherein the preset amplitude interval refers to the intensity range of the fetal heart signal when the ultrasonic probe detects the accurate fetal heart position. When the signal amplitude of the fetal heart signal is in a preset amplitude interval, the fetal heart signal strength is good, and at the moment, the ultrasonic probe finds the fetal heart position; when the signal amplitude of the fetal heart signal is not in the preset amplitude interval, the fetal heart signal intensity difference is indicated, and the position detected by the ultrasonic probe is not the position of the fetal heart.
When the signal amplitude of the fetal heart signal is not within the preset amplitude range, an alarm prompt can be provided to prompt a user that the currently detected fetal heart signal is inaccurate, the working time sequence of the fetal heart probe needs to be changed, and the fetal heart probe needs to be detected again.
According to the fetal heart rate detection method, if the signal amplitude of the fetal heart signal is not within the preset amplitude interval, an alarm prompt is given, so that a user can adjust the detection depth of the ultrasonic probe in time according to the alarm prompt, and then the fetal heart position can be found quickly; if the signal amplitude of the fetal heart signal is within the preset amplitude interval, the position detected by the ultrasonic probe is the position of the fetal heart, and the fetal heart rate is output based on the fetal heart signal, so that the accuracy of the output fetal heart rate is ensured.
Further, in a fourth embodiment of the fetal heart rate detection method according to the present invention, based on any one of the first to third embodiments of the present invention, the operation timing includes a transmission period of the ultrasonic wave, a delay waiting period, and a reception period in each ultrasonic wave transmission period,
the step S22 of updating the working timing sequence of the fetal heart probe to form a refinement of a new working timing sequence, and the step of updating the working timing sequence of the fetal heart probe to form a new working timing sequence includes:
step S221, performing monotonic increase or monotonic decrease on one or more of the transmission duration, the delay waiting duration, and the receiving duration in the working timing sequence of the fetal heart probe to form a new working timing sequence.
The monotonic increase or monotonic decrease may be continuous increase or continuous decrease of the transmission time length data in the working sequence, for example, the initial value of the transmission time length is 100ms, the change of the transmission time length after the monotonic increase process value is 120ms, 140ms, 150ms, etc., and the transmission time length does not decrease during the monotonic increase process. The principle of monotone decreasing is basically the same as that of monotone increasing, but the adjusting trend is different.
When the received fetal heart signal is found to be invalid by detection, the working time sequence of the fetal heart probe needs to be adjusted, one or more of the transmitting time length, the delay waiting time length and the receiving time length in the working time sequence can be adjusted, namely, one of the transmitting time length, the delay waiting time length and the receiving time length can be optionally selected for adjustment, two of the transmitting time length, the delay waiting time length and the receiving time length can be optionally selected for adjustment, or all of the transmitting time length, the delay waiting time length and the receiving time length can be selected for adjustment, the adjustment mode can be monotonously increased or monotonously decreased, and when the adjustment is successful, a new working time sequence is formed.
To assist in understanding the update principle of the timing of the operation of the fetal heart probe, a specific example is explained below:
referring to fig. 3, fig. 3 is a timing chart of a pulse frame signal for controlling the fetal heart probe to transmit ultrasonic waves, the frame signal being a pulse transmission and reception and demodulation period which is the reciprocal of the pulse repetition frequency. After each frame signal starts (i.e., each ultrasonic wave transmission period starts) and a preset preparation time period t1 elapses, pulse transmission is started and continues for a transmission time period t2 (i.e., the fetal heart probe is controlled to continue transmitting the ultrasonic wave signal for the transmission time period t 2). After waiting for the delay waiting time period t3, the reception of the pulse echo signal is started and continues for the reception time period t4 (i.e., the fetal heart probe is controlled to start to continuously receive the ultrasonic echo signal in the subsequent reception time period t4, and the ultrasonic echo signal is converted into the pulse echo signal).
At this time, the minimum depth d (min) detected by the fetal heart probe is determined by the interval between the time when the pulse is transmitted last and the time when the echo signal is just started to be received (i.e. the delay waiting time t3), and the minimum depth detected by the fetal heart probe is applied according to the propagation speed of the ultrasonic wave in the human body being 1500m/s (set as v): formula 1, d (min) ═ v × t 3/2. The division by 2 in the formula 1 is because the ultrasonic wave is transmitted to the human body and also needs to reflect the probe, the total time is t3, and therefore the calculation of the unilateral distance needs to be divided by 2.
For example, assuming that t3 is 30us, d (min) is 1500 × 1000 × 30 × 0.000001/2 is 22.5 mm.
At this time, the maximum depth d (max) detected by the fetal heart probe is defined by the interval between the moment when the pulse is transmitted firstly and the moment when the echo signal is received last (i.e. the sum of the continuous transmission time length t2, the delay waiting time length t3 and the receiving time length t4 as shown in fig. 3), the propagation speed of the ultrasonic wave in the human body is 1500m/s (set as v), and the minimum depth detected by the fetal heart probe applies: formula 2, d (max) ═ v (t2+ t3+ t 4)/2. The division by 2 in the formula 2 is because the ultrasonic wave is transmitted to the human body and needs to reflect the probe, the total time is (t2+ t3+ t4), and the calculation of the unilateral distance needs to be divided by 2.
For example, t 2-90 us, t 3-30 us, t 4-90 us,
then d (max) 1500 × 1000 (90+30+90) × 0.000001/2 158 mm.
As can be seen from the above illustration, when the detected subject is an obese pregnant woman, the minimum depth d (min) needs to be increased, so that the interval between the time when the pulse is transmitted last and the time when the echo signal is just started to be received (i.e., t3) needs to be increased. As shown in fig. 3, t3 is increased to t5, and if t5 is 40us, d (min) is 1500, 1000, 40, 0.000001/2, 30 mm. The difference between the changed minimum depth d (min) and the original minimum depth d' (min) is equal to 7.5-22.5 mm.
At the same time, the maximum depth d (max) needs to be increased, and the interval between the moment when the pulse is transmitted firstly and the moment when the echo signal is received last (namely, one or more of t2, t3 and t4) needs to be increased) can be increased. As shown in fig. 3, t3 may be increased to t5, t4 may be increased to t6, and assuming that t2 is 100us, t5 is 40us, and t6 is 160us, d (max) is 1500 x 1000 (100+40+160) 0.000001/2 is 225 mm. The difference between the changed detected maximum depth d (max) and the original maximum depth d' (max) is 225-158-67 mm.
By combining the specific examples, it can be clearly understood that the minimum detection depth of the fetal heart probe can be adjusted by adjusting t3, and the maximum detection depth of the fetal heart probe can be adjusted by adjusting one or more of t2, t3 and t4, so that a new working time sequence of the fetal heart probe is formed, and the detection depth of the fetal heart probe of the monitor can be adjusted.
In this embodiment, whether the signal amplitude of the adjusted fetal heart signal is within a preset amplitude interval is continuously judged by adjusting the working time sequence in the fetal heart probe, if the adjusted fetal heart signal falls into the preset amplitude interval, the working time sequence is not updated, and the fetal heart rate is obtained according to the current fetal heart signal; if the adjusted fetal heart signals do not fall into the preset amplitude interval, the work time sequence is continuously updated, namely, one or more of the transmitting time length, the delay waiting time length and the receiving time length in the work time sequence of the fetal heart probe are continuously adjusted (namely, monotonously increased or monotonously decreased) to form a new work time sequence until the fetal heart signals obtained by the fetal heart probe based on the new work time sequence are effective, and high efficiency is provided. The convenient fetal heart probe working time sequence updating mode can more efficiently acquire effective fetal heart signals.
Specifically, after the step of performing monotonic increase or monotonic decrease on one or more of the transmitting time length, the delay waiting time length and the receiving time length in the working time sequence of the fetal heart probe to form a new working time sequence, the method includes:
step S80, obtaining the update times of the working time sequence of the current detection object from the starting detection time node to the current time point;
specifically, when the monitor finds that the obtained fetal heart signal is invalid, the working time sequence of the fetal heart probe needs to be updated, the fetal heart rate probe is controlled to detect the fetal heart rate of the detected object again based on the updated working time sequence, and the time point for updating the working time sequence for the first time can be set as the detection starting time node. However, since the monitor cannot determine the distance difference between the coverage position of the detection depth of the fetal heart probe and the actual position of the fetal heart, it is necessary to update the operation timing of the fetal heart probe a plurality of times and perform a plurality of fetal heart rate detections on the detection object by the fetal heart probe based on the updated operation timing. In the processes of multiple work time sequence updating and multiple fetal heart rate detection, counting and obtaining the work time sequence updating times of the detection object at different current time points from the detection starting time node.
The work time sequence of the fetal heart probe is updated before the monotone adjustment trend is not converted, and the work time sequence is updated to be continuously monotonously increased or continuously monotonously decreased. Therefore, the number of updates is actually the number of times the operation timing of the fetal heart probe monotonically increases, or the number of times the operation timing of the fetal heart probe monotonically decreases.
Step S90, judging whether the updating times are more than the preset times;
step S100, if the updating times are more than the preset times, converting the monotone adjusting trend of the updating of the working time sequence, wherein the monotone adjusting trend comprises monotone reduction and monotone increase;
in step S110, if the number of updates is less than or equal to the preset number, no other processing is performed.
The preset number of times may be set by a user in advance or default by a monitor system, and when the update number of times of the working timing sequence corresponding to the current time point from the detection start time node of the current detection object is obtained, the update number of times needs to be compared with the preset number of times to judge whether the update number of times is greater than the preset number of times. When the update times of the working time sequence are larger than the update times, the adjustment direction of the working time sequence of the fetal heart probe is indicated to be wrong (namely the signal amplitude of the fetal heart signal received by the fetal heart probe is farther and farther from the preset amplitude interval, the signal amplitude of the fetal heart signal received by the fetal heart probe is required to be converted, the signal amplitude of the fetal heart signal received by the fetal heart probe is prevented from being farther and farther from the preset amplitude interval, and the fetal heart probe of the monitor is ensured to acquire an effective fetal heart signal in time.
When the monotonous adjustment trend is monotonous decrease and the update times of the working time sequence are found to be larger than the update times, the adjustment direction of the working time sequence of the fetal heart probe needs to be changed, namely, the monotonous adjustment trend is changed into monotonous increase; when the monotonous adjustment trend is monotonously increased and the number of times of updating the working timing sequence is found to be greater than the number of times of updating, the adjustment direction of the working timing sequence of the fetal heart probe needs to be changed, that is, the monotonous adjustment trend is changed to be monotonously decreased.
Furthermore, when the number of updates is found to be less than or equal to the preset number, the current operation may be continued, that is, the work timing sequence of the fetal heart probe is continuously updated in the current monotonous adjustment trend, that is, the work timing sequence is continuously monotonously increased or continuously monotonously decreased, so that the signal amplitude of the fetal heart signal received by the fetal heart probe is closer to the preset amplitude interval until the signal amplitude of the fetal heart signal is within the preset amplitude interval.
Specifically, if the number of updates is greater than the preset number, the step of converting the monotone adjustment trend of the update of the working timing sequence includes:
step S91, if the updating times are more than the preset times, obtaining the amplitude difference value of the signal amplitude of the fetal heart signal obtained in the updating process of the corresponding working time sequence of the current detection object and the boundary value of the preset amplitude interval;
when the received fetal heart signal is invalid, the working time sequence of the fetal heart probe is continuously adjusted and updated to obtain a new working time sequence. When the number of updates is greater than the number of updates, the signal amplitude value of the fetal heart signal obtained in the process of updating the working time sequence corresponding to the current detection object needs to be obtained, that is, the signal amplitude value of the fetal heart signal needs to be obtained once every time the working time sequence is updated, the boundary value of the amplitude interval is obtained based on the amplitude interval preset before the current moment, and then the difference between the amplitude value of the fetal heart signal and the boundary value is calculated, wherein the difference is the amplitude difference.
Step S92, if the amplitude difference value is continuously increased, the updated monotone adjustment trend of the working time sequence is converted;
when the amplitude difference value is found to be increasing all the time, it indicates that the signal amplitude of the fetal heart signal received by the fetal heart rate probe for performing fetal heart rate detection on the current detection object based on the continuously updated working time sequence is farther and farther from the preset amplitude interval, and the monotone adjustment trend of the updating of the working time sequence needs to be converted. That is, if the monotonous adjustment tendency of the update of the current operation timing is monotonously increasing, it is necessary to change the monotonous adjustment tendency of the update of the current operation timing to monotonously decreasing. Similarly, if the monotonous adjustment trend of the update of the current operation timing is monotonously decreasing, the monotonous adjustment trend of the update of the current operation timing needs to be changed to monotonously increasing.
In step S93, if the amplitude difference is decreasing, the working timing sequence is updated according to the current monotone adjustment trend.
When the amplitude difference value is reduced all the time, the fetal heart probe indicates that the signal amplitude of the fetal heart signal received by the fetal heart rate detection of the current detection object based on the continuously updated working time sequence is closer to the preset amplitude interval, the monotonous adjustment trend of the working time sequence of the fetal heart probe is correct, and the working time sequence can be continuously updated according to the current monotonous adjustment trend until the signal amplitude of the fetal heart signal received by the fetal heart probe is in the preset amplitude interval.
That is, if the monotone adjustment trend of the update of the current operation timing is monotonously increasing, the current adjustment trend is kept unchanged, and the monotone increasing monotone adjustment trend is still performed. Similarly, if the monotonous adjustment trend of the update of the current working time sequence is monotonously reduced, the working time sequence is still updated according to the monotonously reduced adjustment trend until the signal amplitude of the obtained fetal heart signal is within the preset amplitude interval, and then the effective fetal heart signal can be obtained.
In this embodiment, by counting the update times of the working time sequence corresponding to the current detection object and comparing the update times with the preset times, when the update times are greater than the preset times, the monitor system automatically compares and adjusts the signal amplitude of the acquired fetal heart signal with the boundary value of the preset amplitude interval, so as to avoid continuous increase of subsequent amplitude difference values and improve the accuracy and intelligence of the updating of the working time sequence of the fetal heart probe.
In addition, referring to fig. 5, an embodiment of the present invention further provides a fetal heart rate detection apparatus, including:
the obesity degree judging unit is used for acquiring the abdomen constitution information of the current detection object of the monitor and determining the working time sequence of the fetal heart probe according to the abdomen constitution information;
the fetal heart sensor unit controls the fetal heart probe to detect a detection object in a working time sequence so as to obtain a fetal heart signal;
and the fetal heart rate unit acquires the fetal heart rate based on the fetal heart signal.
Optionally, the obesity degree determination unit includes:
the query unit is used for querying and acquiring a target time sequence corresponding to the abdomen constitution information in a preset mapping table of the abdomen constitution information and the detection time sequence;
the judging unit is used for acquiring the current initial time sequence of the monitor and judging whether the target time sequence is consistent with the initial time sequence;
and the replacing unit is used for taking the target time sequence as the working time sequence of the fetal heart probe if the target time sequence is inconsistent with the initial time sequence.
Optionally, the fetal heart rate detection apparatus comprises:
a signal processing and judging unit for judging whether the fetal heart signal is effective;
and the time sequence adjusting unit is used for updating the working time sequence of the fetal heart probe to form a new working time sequence if the fetal heart signal is invalid, and controlling the fetal heart probe to perform fetal heart rate detection on the detection object in the new working time sequence to obtain an effective fetal heart signal.
Optionally, the signal processing and determining unit includes:
the judging unit is used for judging whether the signal amplitude of the fetal heart signal is within a preset amplitude interval or not, and judging that the fetal heart signal is effective if the signal amplitude of the fetal heart signal is within the preset amplitude interval; and if the signal amplitude of the fetal heart signal is not within the preset amplitude interval, judging that the fetal heart signal is invalid.
Optionally, the working timing sequence includes a transmission duration, a delay waiting duration, and a receiving duration of the ultrasonic wave in each ultrasonic wave transmission period, and the timing sequence adjusting unit includes:
and the continuous adjusting unit is used for performing monotonous increase or monotonous decrease on one or more of the transmitting time length, the delay waiting time length and the receiving time length in the working time sequence of the fetal heart probe to form a new working time sequence.
Optionally, the fetal heart rate detection apparatus comprises:
the updating time acquiring unit is used for acquiring the updating times of the working time sequence corresponding to the current detection object from the detection starting time node to the current time point;
a judgment frequency unit for judging whether the updating frequency is larger than the preset frequency;
the trend conversion unit is used for converting the monotone adjustment trend of the update of the working time sequence if the update times are more than the preset times, wherein the monotone adjustment trend comprises monotone reduction and monotone increase;
and if the updating times are less than or equal to the preset times, not performing other processing.
Optionally, the trend conversion unit includes:
the difference value obtaining unit is used for obtaining the amplitude difference value of the signal amplitude of the fetal heart signal and the boundary value of the preset amplitude interval in the updating process of the corresponding working time sequence of the current detection object if the updating times are larger than the preset times;
the adjustment conversion unit is used for converting the updated monotone adjustment trend of the working time sequence if the amplitude difference value is continuously increased;
and the updating unit is used for continuously updating the working time sequence according to the current monotone adjusting trend if the amplitude difference value is continuously reduced.
The steps implemented by each functional unit of the fetal heart rate detection apparatus may refer to each embodiment of the fetal heart rate detection method of the present invention, and are not described herein again.
In addition, the embodiment of the invention also provides fetal heart rate detection equipment.
The fetal heart rate detection apparatus includes: a fetal heart probe, a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the fetal heart rate detection method as in any one of the above embodiments.
In addition, the embodiment of the invention also provides a computer storage medium.
The computer storage medium has a computer program stored thereon, and the computer program, when executed by the processor, implements the operations in the fetal heart rate detection method provided by the above embodiments.
In the embodiments of the fetal heart rate detection apparatus and the readable storage medium of the present invention, all technical features of the embodiments of the fetal heart rate detection method are included, and the contents of the expansion and the explanation of the specification are substantially the same as those of the embodiments of the fetal heart rate detection method, which will not be described herein in a repeated manner.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fetal heart rate detection method, characterized by comprising the steps of:
acquiring abdominal constitution information of a current detection object of a monitor, and determining the working time sequence of a fetal heart probe according to the abdominal constitution information;
controlling a fetal heart probe to detect the detection object according to the working time sequence so as to obtain a fetal heart signal;
a fetal heart rate is obtained based on the fetal heart signal.
2. The fetal heart rate detection method of claim 1, wherein the step of determining the timing of the operation of the fetal heart probe based on the abdominal constitution information comprises:
inquiring and acquiring a target time sequence corresponding to the abdomen constitution information in a preset mapping table of reference abdomen constitution information and detection time sequence;
acquiring an initial time sequence currently used by a monitor, and judging whether the target time sequence is consistent with the initial time sequence;
and if the target time sequence is not consistent with the initial time sequence, taking the target time sequence as the working time sequence of the fetal heart probe.
3. The fetal heart rate detection method of claim 1, wherein the step of controlling the fetal heart probe to detect the detection object at the operation timing sequence to obtain the fetal heart signal is followed by:
judging whether the fetal heart signal is effective or not;
and if the fetal heart signal is invalid, updating the working time sequence of the fetal heart probe to form a new working time sequence, and controlling the fetal heart probe to perform fetal heart rate detection on the detection object according to the new working time sequence to obtain an effective fetal heart signal.
4. The fetal heart rate detection method of claim 3, wherein the step of determining whether the fetal heart signal is valid comprises:
judging whether the signal amplitude of the fetal heart signal is within a preset amplitude interval or not, and if so, judging that the fetal heart signal is effective; and if the signal amplitude of the fetal heart signal is not within the preset amplitude interval, judging that the fetal heart signal is invalid.
5. A fetal heart rate detection method as claimed in claim 3 wherein the operating schedule includes an ultrasonic wave transmission duration, a delay wait duration and a reception duration in each ultrasonic wave transmission cycle, and the step of updating the operating schedule of the fetal heart probe to form a new operating schedule includes:
and performing monotonous increase or monotonous decrease on one or more of the transmitting time length, the delay waiting time length and the receiving time length in the working time sequence of the fetal heart probe to form a new working time sequence.
6. The fetal heart rate detection method of claim 5 wherein the step of monotonically increasing or monotonically decreasing one or more of a transmit duration, a delay wait duration and a receive duration in the operating sequence of the fetal heart probe to form a new operating sequence is followed by the step of:
acquiring the updating times of a working time sequence corresponding to a current time point from a detection starting time node of a current detection object;
judging whether the updating times are more than preset times or not;
if the updating times are larger than the preset times, converting the monotone adjusting trend of the updating of the working time sequence, wherein the monotone adjusting trend comprises monotone reduction and monotone increase;
and if the updating times are less than or equal to the preset times, not performing other processing.
7. The fetal heart rate detection method of claim 6, wherein the step of converting the monotone adjustment trend of the update of the work timing sequence if the update times is greater than the preset times comprises:
if the updating times are larger than the preset times, acquiring an amplitude difference value of the signal amplitude of the fetal heart signal and a boundary value of a preset amplitude interval, which is obtained in the updating process of the corresponding working time sequence of the current detection object;
if the amplitude difference value is continuously increased, converting the updated monotone adjustment trend of the working time sequence;
and if the amplitude difference value is continuously reduced, continuously updating the working time sequence according to the current monotone adjustment trend.
8. A fetal heart rate detection apparatus, comprising:
the obesity degree judging unit is used for acquiring the abdomen constitution information of the current detection object of the monitor and determining the working time sequence of the fetal heart probe according to the abdomen constitution information;
the fetal heart sensor unit controls a fetal heart probe to detect the detection object according to the working time sequence so as to obtain a fetal heart signal;
and the fetal heart rate unit acquires the fetal heart rate based on the fetal heart signal.
9. A fetal heart rate detection apparatus, characterized in that the fetal heart rate detection apparatus comprises: a fetal heart probe, a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the fetal heart rate detection method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the fetal heart rate detection method as defined in any one of claims 1 to 7.
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Application publication date: 20200501 |