CN110613444A - Method and device for displaying mother-fetus mixed electrocardiosignals - Google Patents
Method and device for displaying mother-fetus mixed electrocardiosignals Download PDFInfo
- Publication number
- CN110613444A CN110613444A CN201910873390.6A CN201910873390A CN110613444A CN 110613444 A CN110613444 A CN 110613444A CN 201910873390 A CN201910873390 A CN 201910873390A CN 110613444 A CN110613444 A CN 110613444A
- Authority
- CN
- China
- Prior art keywords
- fetal
- maternal
- wave band
- qrs
- mixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/344—Foetal cardiography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/346—Analysis of electrocardiograms
- A61B5/349—Detecting specific parameters of the electrocardiograph cycle
- A61B5/366—Detecting abnormal QRS complex, e.g. widening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
- A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
- A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
- A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
- A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
- A61B5/4362—Assessing foetal parameters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/725—Details of waveform analysis using specific filters therefor, e.g. Kalman or adaptive filters
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Cardiology (AREA)
- Signal Processing (AREA)
- Psychiatry (AREA)
- Physiology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Pregnancy & Childbirth (AREA)
- Gynecology & Obstetrics (AREA)
- Reproductive Health (AREA)
- Power Engineering (AREA)
- Pediatric Medicine (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention discloses a method and a device for displaying mother-fetus mixed electrocardiosignals, wherein the method comprises the following steps: acquiring maternal-fetal mixed electrocardiosignals; identifying a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignals; calculating the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band according to the maternal QRS wave band and the fetal QRS wave band; and zooming the parent QRS wave band and/or the fetus QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal, and displaying a waveform curve of the zoomed mixed electrocardiosignal. The amplitude ratio of the parent QRS wave band and the fetal QRS wave band is obtained from the obtained maternal-fetal mixed electrocardiosignals, and then the maternal-fetal mixed electrocardiosignals are zoomed according to the amplitude ratio, so that the certain amplitude ratio of the parent QRS wave band and the fetal QRS wave band in the zoomed displayed waveform curve is maintained, the waveform curve can be ensured to be capable of highlighting the fetal QRS wave band, the observation of a user is facilitated, and the screen space and the resource occupation are also saved.
Description
Technical Field
The invention relates to the technical field of medical monitoring, in particular to a method and a device for displaying maternal and fetal mixed electrocardiosignals.
Background
The body surface fetal electrocardio technology is a technical means for non-invasively and simultaneously monitoring maternal electrocardio and fetal electrocardio, an electrocardioelectrode is attached to the body surface of a mother body to obtain mixed electrocardiosignals of the mother and the fetus, then the mixed electrocardiosignals of the mother and the fetus are filtered, identified and separated to further obtain the electrocardiosignals of the mother and the fetus, and finally the electrocardiosignals of the mother and the fetus are respectively analyzed to obtain a waveform analysis result and a heart rate monitoring result.
The collected maternal-fetal mixed electrocardiosignals are generally drawn into waveforms clinically, so that a user can observe the forms of the maternal electrocardiosignals and the fetal electrocardiosignals, and the user can judge the collection quality of the current signals according to the stability of waveform display so as to guide the user to adjust the electrode position or check the electrode connection state in time.
However, because the fetal electrocardiosignals are weak, generally between 5 uV-50 uV, only about 1/10 of the maternal electrocardiosignals, if the maternal electrocardiosignals and the fetal electrocardiosignals are directly displayed on the same waveform curve by the same scale standard, the fetal electrocardiosignals are very small, so that the fetal electrocardiosignals are difficult to observe from the waveform curve, and the observation and the judgment of the user on the fetal electrocardiosignals are influenced. If the maternal electrocardiosignal and the fetal electrocardiosignal are split into two coordinate systems to independently draw the waveform for display, more screen space is occupied, and more hardware resources are consumed.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for displaying mixed maternal-fetal electrocardiosignals, so as to solve the technical problem in the prior art that it is inconvenient to draw a waveform curve of the mixed maternal-fetal electrocardiosignals in the same coordinate system as the maternal-fetal electrocardiosignals due to very small fetal electrocardiosignals.
According to a first aspect, the invention provides a method for displaying maternal-fetal mixed electrocardiosignals, which comprises the following steps:
acquiring maternal-fetal mixed electrocardiosignals;
identifying a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignal;
calculating the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band according to the maternal QRS wave band and the fetal QRS wave band;
and zooming the maternal QRS wave band and/or the fetal QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal, and displaying a waveform curve of the zoomed mixed electrocardiosignal.
Further, the identifying a maternal QRS band and a fetal QRS band in the maternal-fetal mixed electrocardiosignal comprises:
preprocessing the maternal-fetal mixed electrocardiosignals to obtain preprocessed maternal-fetal mixed electrocardiosignals;
identifying a parent QRS wave band in the preprocessed maternal-fetal mixed electrocardiosignals;
and identifying a fetal QRS wave band in the preprocessed maternal-fetal mixed electrocardiosignal according to the identified maternal QRS wave band.
Further, said calculating a ratio of amplitudes of said maternal QRS band and said fetal QRS band based on said maternal QRS band and said fetal QRS band comprises: calculating the amplitude a1 of the maternal QRS band closest to the current time point and the amplitude a2 of the fetal QRS band closest; the ratio of the amplitude a1 to the amplitude a2 is taken as the amplitude ratio p.
Further, said calculating a ratio of amplitudes of said maternal QRS band and said fetal QRS band based on said maternal QRS band and said fetal QRS band comprises: calculating the amplitude average value B1 of the maternal QRS wave band and the amplitude average value B2 of the fetal QRS wave band respectively; the ratio of the amplitude average value B1 to the amplitude average value B2 is calculated as an amplitude ratio p.
Further, the average value B1 of the amplitudes of the parent QRS bands is calculated according to the amplitudes of the parent QRS bands within the latest preset time range or a preset number of the parent QRS bands; the average value of the amplitudes of the fetal QRS bands B2 is calculated based on the amplitudes of the most recent pre-determined time frame or a pre-determined number of fetal QRS bands.
Further, the average value of the amplitudes of the maternal QRS band B1 is calculated from the amplitudes of all the maternal QRS bands displayed in the current screen; the average value of the amplitudes of said fetal QRS bands B2 is calculated from the amplitudes of all of said fetal QRS bands displayed in the current screen.
Further, scaling the maternal QRS band and/or the fetal QRS band according to the amplitude ratio to obtain a scaled mixed electrocardiographic signal, and displaying a waveform curve of the scaled mixed electrocardiographic signal, including:
presetting an ideal amplitude ratio q of the maternal QRS wave band and the fetal QRS wave band;
establishing a rectangular coordinate system in a drawing area, and drawing data points of the mother-fetus mixed signals in real time;
detecting whether the current data point is the data point of the parent QRS wave band, and if the data point is not the data point of the parent QRS wave band, performing point tracing drawing on the current data point; if the data point is the data point of the parent QRS wave band, multiplying the current data point by q/p to obtain a new data point, and then drawing the new data point; or
Detecting whether the current data point is the data point of the fetal QRS wave band, and if the data point is not the data point of the maternal QRS wave band, performing tracing drawing by using the current data point; and if the data point is the data point of the parent QRS wave band, multiplying the current data point by p/q to obtain a new data point, and then performing point drawing by using the new data point.
Further, in the step of detecting whether the current data point is a data point of the fetal QRS band, when the current data point is detected to be a data point of the fetal QRS band, a waveform curve of the mixed electrocardiosignal is displayed with curves of different characteristics.
Further, in the detecting whether the current data point is the data point of the maternal QRS band or the data point of the fetal QRS band, when the current data point is detected to be the data point of the maternal QRS band or the data point of the fetal QRS band, marking to indicate that the current corresponding band of the data point is a maternal QRS signal or a fetal QRS signal.
According to a second aspect, the present invention further provides a display device for mixed maternal and fetal cardiac signals, comprising:
the acquisition unit is used for acquiring maternal-fetal mixed electrocardiosignals;
the analysis unit is connected with the acquisition unit and is used for analyzing the acquired maternal-fetal mixed electrocardiosignals and identifying a maternal QRS wave band and a fetal QRS wave band from the maternal-fetal mixed electrocardiosignals;
the calculating unit is connected with the maternal-fetal mixed electrocardiosignal analyzing unit and is used for calculating the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band according to the identified maternal QRS wave band and the identified fetal QRS wave band;
and the drawing unit is connected with the calculating unit and is used for zooming the parent QRS wave band and/or the fetus QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal and displaying a waveform curve of the zoomed mixed electrocardiosignal.
According to a third aspect, an embodiment of the present invention further provides a maternal and fetal monitoring device, including a display device, a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the method for displaying mixed electrocardiographic signals of a maternal and fetal heart, and the display device displays a waveform curve of the scaled mixed electrocardiographic signals.
According to a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to cause the computer to execute the above-mentioned method for displaying maternal-fetal mixed electrocardiosignals.
The technical scheme of the invention has the following advantages:
1. the method for displaying the maternal-fetal mixed electrocardiosignals, provided by the invention, comprises the steps of obtaining and identifying a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignals in real time, and zooming the maternal-fetal mixed electrocardiosignals according to the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band to obtain a waveform curve of the zoomed mixed electrocardiosignals; in the waveform curve of the zoomed mixed electrocardiosignal, the mother QRS wave band and the fetus QRS wave band always maintain a certain amplitude ratio, so that the waveform curve can highlight the fetus QRS wave band, the observation of a user is facilitated, and the screen space and the resource occupation of display equipment are saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flowchart illustrating an implementation of a method for displaying an electrocardiographic signal of a fetus on a body surface according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a step S20 of the method for displaying the electrocardiogram signals of the fetus on the body surface according to the embodiment of the present invention;
fig. 3 is a flowchart illustrating an implementation of identifying a mother QRS band and a fetus QRS band from a mother-fetus mixed electrocardiograph signal according to an embodiment of the present invention;
FIG. 4 is a flow chart of an implementation of a method for plotting a waveform curve according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a device for displaying an electrocardiographic signal of a fetus on a body surface according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware structure of a mother-child monitoring device according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The application provides a method for displaying maternal-fetal mixed electrocardiosignals, which can be applied to various electronic devices, wherein the devices are provided with electrocardiosignal acquisition and analysis modules and used for acquiring and analyzing biological electrocardiosignals. The electronic devices may include, but are not limited to, computers, smart phones, electrocardiographs, wearable electrocardiograph acquisition devices, monitors, and the like.
Example one
Referring to fig. 1, an embodiment of the present invention provides a method for displaying maternal-fetal mixed electrocardiographic signals, which specifically includes the following steps:
and step S10, acquiring maternal-fetal mixed electrocardiosignals.
In this embodiment, after the monitoring device is started, the signal data acquisition program acquires the maternal-fetal mixed electrocardiosignals in real time through the electrode system placed on the abdomen of the mother and converts the maternal-fetal mixed electrocardiosignals into digital signal data.
And step S20, identifying a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignal.
Specifically, in this embodiment, the QRS wave detection and analysis is performed on the maternal-fetal mixed electrocardiographic signal acquired by the electrode system, so as to identify the maternal electrocardiographic signal and the fetal electrocardiographic signal in the maternal-fetal mixed electrocardiographic signal, and locate the position of the maternal QRS wave band and the position of the fetal QRS wave band in the maternal-fetal mixed electrocardiographic signal. The QRS wave is the most obvious part in the electrocardiosignal waveform and can reflect the electrical behavior of the mother or the fetus heart, and because the signal intensity of the QRS wave in the mother electrocardiosignal is far greater than that of the QRS wave in the fetus electrocardiosignal, the mother QRS wave band and the fetus QRS wave band can be accurately positioned and identified from the mother and fetus mixed electrocardiosignal through the QRS wave detection. In addition, the electrode system is inevitably influenced by some interference noise, such as power frequency interference, myoelectricity interference, baseline drift and the like, in the process of acquiring the maternal-fetal mixed electrocardiosignal. Optionally, in order to eliminate noise interference, the acquired maternal-fetal mixed electrocardiosignal is preprocessed through an adaptive filter to eliminate noise interference, so as to improve the quality of the acquired maternal-fetal mixed electrocardiosignal and reduce the identification interference of noise on the maternal QRS band and the fetal QRS band in the maternal-fetal mixed electrocardiosignal.
Step S30, calculating the amplitude ratio of the maternal QRS band and the fetal QRS band according to the maternal QRS band and the fetal QRS band.
Specifically, after a maternal QRS wave band and a fetal QRS wave band in the acquired maternal-fetal mixed electrocardiosignals are accurately identified, an amplitude ratio p of the maternal QRS wave band and the fetal QRS wave band is calculated, and the amplitude ratio p determines a proportion coefficient of the maternal electrocardiosignals needing to be reduced or a proportion coefficient of the fetal electrocardiosignals needing to be amplified or a reference scale standard needing to be calculated when the waveforms are drawn.
And S40, zooming the maternal QRS wave band and/or the fetal QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal, and displaying a waveform curve of the zoomed mixed electrocardiosignal.
Specifically, in this embodiment, according to the calculated amplitude ratio p and a preset amplitude ratio q, a waveform curve of the scaled mixed electrocardiographic signal can be displayed in the same coordinate system in different manners, where the preset amplitude ratio q is a ratio of QRS amplitudes of the mother fetus (i.e., an ideal amplitude ratio) seen on the screen by the user after the waveform curve is drawn.
In the embodiment of the invention, the mother QRS wave band and the fetus QRS wave band in the mother-fetus mixed electrocardiosignal are obtained and identified in real time, and the mother-fetus mixed electrocardiosignal is zoomed according to the amplitude ratio of the mother QRS wave band and the fetus QRS wave band to obtain the waveform curve of the zoomed mixed electrocardiosignal; in the waveform curve of the zoomed mixed electrocardiosignal, the mother QRS wave band and the fetus QRS wave band always maintain a certain amplitude ratio, so that the waveform curve can highlight the fetus QRS wave band, the observation of a user is facilitated, and the screen space and the resource occupation of display equipment are saved.
Referring to fig. 2, in step S20, the specific process of identifying the maternal QRS band and the fetal QRS band in the maternal-fetal mixed electrocardiographic signal includes:
step S201, preprocessing the maternal-fetal mixed electrocardiosignals to obtain preprocessed maternal-fetal mixed electrocardiosignals. In this embodiment, baseline drift interference, power frequency interference, and myoelectric interference in the maternal-fetal mixed electrocardiosignal are eliminated by the adaptive filter, so as to obtain a clean maternal-fetal mixed electrocardiosignal.
And S202, identifying a parent QRS wave band in the preprocessed parent-fetal mixed electrocardiosignals. In this embodiment, the preprocessed maternal-fetal mixed electrocardiosignals are successively passed through a difference filter, a low-pass filter and a limiting filter to obtain maternal electrocardio envelope signals, peak values above a preset threshold value in the maternal electrocardio envelope signals are detected in real time, the peak values correspond to the maternal QRS signals, and a starting point, a peak point, an end point position and an amplitude of the maternal QRS signals are respectively calculated and recorded.
And S203, identifying a fetus QRS wave band in the preprocessed maternal-fetal mixed electrocardiosignal according to the identified maternal QRS wave band. In this embodiment, the calculated QRS band of the mother body is subtracted from the preprocessed mixed maternal-fetal electrocardiosignals, then the processed mixed maternal-fetal electrocardiosignals pass through the difference filter and the low-pass filter in sequence to obtain the electrocardio envelope signals, and finally, the peak values above the preset threshold value in the electrocardio envelope signals are detected in real time, and the peak values correspond to the fetal QRS signals, and the start point, the peak point, the end point position and the amplitude of the fetal QRS signals are calculated and recorded respectively.
In a specific implementation manner of the embodiment of the present invention, in step S30, the specific process of calculating the amplitude ratio of the maternal QRS band and the fetal QRS band according to the maternal QRS band and the fetal QRS band is as follows: calculating the amplitude a1 of the maternal QRS band closest to the current time point and the amplitude a2 of the fetal QRS band closest; the ratio of the amplitude a1 to the amplitude a2 is taken as the amplitude ratio p. The calculation method is simple and high in efficiency.
In another specific implementation manner of the embodiment of the present invention, in step S30, the specific process of calculating the amplitude ratio of the maternal QRS band and the fetal QRS band according to the maternal QRS band and the fetal QRS band is as follows: calculating the amplitude average value B1 of the maternal QRS wave band and the amplitude average value B2 of the fetal QRS wave band respectively; the ratio of the amplitude average value B1 to the amplitude average value B2 is calculated as an amplitude ratio p. The calculation method can effectively eliminate the influence caused by the instantaneous change of the amplitude of the QRS wave band of the mother or the QRS wave band of the fetus. Wherein the average value B1 of the amplitudes of the parent QRS wave bands is calculated according to the amplitudes of the parent QRS wave bands within the latest preset time range or a preset number; the average value of the amplitudes of the fetal QRS bands B2 is calculated based on the amplitudes of the most recent pre-determined time frame or a pre-determined number of fetal QRS bands. In other embodiments, the average B1 of the amplitudes of the maternal QRS band may also be calculated based on the amplitudes of all the maternal QRS bands currently displayed on the screen; the average value of the amplitudes of the fetal QRS band B2 can also be calculated from the amplitudes of all the fetal QRS bands displayed in the current screen. The calculation method can ensure that the optimal amplitude ratio can be accurately obtained in the range of the current screen display area.
Referring to fig. 3 and 4, in step S40, the method for scaling the maternal QRS band and/or the fetal QRS band according to the amplitude ratio to obtain a scaled mixed electrocardiographic signal, and displaying a waveform curve of the scaled mixed electrocardiographic signal includes:
s401, presetting an ideal amplitude ratio q of a mother QRS and a fetus QRS;
s402, establishing a rectangular coordinate system in a drawing area, and drawing mother-child mixed signal data points in real time;
step S403, detecting whether the current data point is a data point of the parent QRS band, and if the current data point is not a data point of the parent QRS band, executing step S404; if the data point is the data point of the parent QRS band, step S405 is performed.
Step S404, performing point drawing by using the current data point;
and step S405, multiplying the current data point by q/p to obtain a new data point, and then performing point drawing on the new data point.
The method for drawing the waveform curve reduces the QRS wave band of the parent body to ensure that the drawn and zoomed waveform curve of the mixed electrocardiosignal is maintained at an amplitude ratio suitable for visual observation.
In another method for drawing a waveform curve, which is used for zooming the maternal QRS wave band and/or the fetal QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal and displaying the waveform curve of the zoomed mixed electrocardiosignal, the difference from the above drawing method is that whether the current data point is the data point of the fetal QRS wave band is detected, and if the data point is not the data point of the maternal QRS wave band, the current data point is used for drawing points; and if the data point is the data point of the parent QRS wave band, multiplying the current data point by p/q to obtain a new data point, and then performing point drawing by using the new data point. The drawing method is characterized in that the QRS wave band of the fetus is amplified, so that the drawn amplified waveform curve of the mixed electrocardiosignal is maintained at an amplitude ratio suitable for visual observation.
Of course, it can be understood here that a manner of simultaneously reducing the mother-fetus QRS band and amplifying the fetus QRS band may also be adopted, as long as the drawn waveform curve of the scaled mixed electrocardiographic signal is maintained at an amplitude ratio suitable for visual observation.
Specifically, in the process of detecting whether the current data point is the data point of the fetal QRS band, when the currently drawn signal data point is detected to be the fetal QRS band, the waveform curve of the scaled mixed electrocardiosignal is displayed by curves with different characteristics. Here the curves of different features may be curves of different thickness, colour or shape to highlight where the fetal QRS band is located.
Specifically, in the process of detecting whether the current data point is the data point of the maternal QRS band or the data point of the fetal QRS band, when the current data point is detected to be the data point of the maternal QRS band or the data point of the fetal QRS band, marking the QRS band indicates that the corresponding band of the current data point is the maternal QRS signal or the fetal QRS signal. The specific way of marking the QRS band here may be to mark the QRS band in a blank area of the coordinate system with a specific shape or text in a blank area above or below the QRS band.
Example two
Referring to fig. 5, a second embodiment of the present invention provides a display device for mixed maternal-fetal cardiac signals, including:
the acquisition unit is used for acquiring maternal-fetal mixed electrocardiosignals;
the analysis unit is connected with the acquisition unit and is used for analyzing the acquired maternal-fetal mixed electrocardiosignals and identifying a maternal QRS wave band and a fetal QRS wave band from the maternal-fetal mixed electrocardiosignals;
the calculating unit is connected with the maternal-fetal mixed electrocardiosignal analyzing unit and is used for calculating the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band according to the identified maternal QRS wave band and the identified fetal QRS wave band;
and the drawing unit is connected with the calculating unit and is used for zooming the parent QRS wave band and/or the fetus QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal and displaying a waveform curve of the zoomed mixed electrocardiosignal.
The acquisition unit 10 is used for acquiring maternal-fetal mixed electrocardiosignals;
the analysis unit 20 is connected with the acquisition unit 10, and is used for analyzing the acquired maternal-fetal mixed electrocardiosignals and identifying a maternal QRS wave band and a fetal QRS wave band from the maternal-fetal mixed electrocardiosignals;
a calculating unit 30, connected to the analyzing unit 20, for calculating an amplitude ratio of the maternal QRS band to the fetal QRS band according to the identified maternal QRS band and the fetal QRS band;
a drawing unit 40, connected to the calculating unit 30, for scaling the maternal QRS band and/or the fetal QRS band according to the amplitude ratio to obtain a scaled mixed electrocardiographic signal, and displaying a waveform curve of the scaled mixed electrocardiographic signal.
In a specific implementation process, the acquisition unit 10 acquires maternal-fetal mixed electrocardiosignal data in real time and stores the maternal-fetal mixed electrocardiosignal data in a corresponding buffer area, the analysis unit 20 analyzes and identifies the acquired maternal-fetal mixed electrocardiosignal in real time, locates a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignal, respectively inputs the acquired maternal QRS information and fetal QRS information into the calculation unit 30, the calculation unit 30 calculates an amplitude ratio p of the maternal QRS wave band and the fetal QRS wave band, and finally the drawing unit 40 draws a waveform curve of the scaled mixed electrocardiosignal in the same coordinate system in different manners according to the calculated amplitude ratio p and a preset amplitude ratio q.
In summary, according to the method and the device for displaying a mixed maternal-fetal electrocardiosignal provided by the embodiments of the present invention, a maternal QRS band and a fetal QRS band in the mixed maternal-fetal electrocardiosignal are obtained, analyzed, and identified in real time, and then drawn on the same waveform curve of the same coordinate system, during drawing, the mixed maternal-fetal electrocardiosignal is scaled according to the amplitude of the maternal QRS band and the amplitude of the fetal QRS band to obtain a scaled mixed maternal-fetal electrocardiosignal, and then a waveform curve of the scaled mixed electrocardiosignal is displayed, such that a certain amplitude ratio is always maintained between the maternal QRS band and the fetal QRS band in the waveform curve, which ensures that the waveform curve can highlight the fetal QRS band, is beneficial for user observation, and also saves screen space and resource occupation.
As shown in fig. 6, an embodiment of the present invention further provides a maternal and fetal monitoring device, which may include, but is not limited to, a computer, a smart phone, an electrocardiograph, a wearable electrocardiograph acquisition device, a monitor, and the like. The maternal and fetal monitoring device may include, but is not limited to, an electrode system, a display device, a processor 51 and a memory 52. Those skilled in the art will appreciate that fig. 6 is merely an example of a maternal monitoring device and is not limiting and may include more or fewer components than shown, or some components in combination, or different components, e.g., the maternal monitoring device may also include input-output devices, network access devices, buses, etc. The processor 51 and the memory 52 may be connected by a bus or other means, and fig. 6 illustrates the connection by the bus as an example.
The processor 51 may be a Central Processing Unit (CPU). The Processor 51 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, or combinations thereof.
The memory 52 is a non-transitory computer-readable storage medium, and can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as program instructions/modules corresponding to the displaying method of maternal-fetal mixed electrocardiographic signals according to the embodiment of the present invention. The processor 51 executes various functional applications and data processing of the processor 51 by running the non-transitory software programs, instructions and modules stored in the memory 52, that is, implements the method for displaying the maternal-fetal mixed electrocardiosignals in the above method embodiments.
The memory 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created by the processor 51, and the like. Further, the memory 52 may include high speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory 52 may optionally include memory located remotely from the processor 51, and these remote memories may be connected to the processor 51 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory 52, and when executed by the processor 51, perform a method for displaying maternal-fetal mixed cardiac electrical signals as in the embodiment shown in fig. 1.
The details of the electrocardiographic monitoring device can be understood with reference to the corresponding related description and effects in the embodiment shown in fig. 5, and are not described herein again.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a Flash Memory (Flash Memory), a Hard Disk (Hard Disk Drive, abbreviated as HDD), a Solid State Drive (SSD), or the like; the storage medium may also comprise a combination of memories of the kind described above.
Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (12)
1. A method for displaying mixed electrocardiosignals of mother and fetus is characterized by comprising the following steps:
acquiring maternal-fetal mixed electrocardiosignals;
identifying a maternal QRS wave band and a fetal QRS wave band in the maternal-fetal mixed electrocardiosignal;
calculating the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band according to the maternal QRS wave band and the fetal QRS wave band;
and zooming the maternal QRS wave band and/or the fetal QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal, and displaying a waveform curve of the zoomed mixed electrocardiosignal.
2. The method for displaying a maternal-fetal mixed electrocardiosignal according to claim 1, wherein the identifying the maternal QRS wave band and the fetal QRS wave band in the maternal-fetal mixed electrocardiosignal comprises:
preprocessing the maternal-fetal mixed electrocardiosignals to obtain preprocessed maternal-fetal mixed electrocardiosignals;
identifying a parent QRS wave band in the preprocessed maternal-fetal mixed electrocardiosignals;
and identifying a fetal QRS wave band in the preprocessed maternal-fetal mixed electrocardiosignal according to the identified maternal QRS wave band.
3. The method for displaying mixed maternal and fetal cardiac signals according to claim 2, wherein said calculating the ratio of the amplitudes of said maternal QRS band and said fetal QRS band based on said maternal QRS band and said fetal QRS band comprises:
calculating the amplitude a1 of the maternal QRS band closest to the current time point and the amplitude a2 of the fetal QRS band closest;
the ratio of the amplitude a1 to the amplitude a2 is taken as the amplitude ratio p.
4. The method for displaying mixed maternal and fetal cardiac signals according to claim 2, wherein said calculating the ratio of the amplitudes of said maternal QRS band and said fetal QRS band based on said maternal QRS band and said fetal QRS band comprises:
calculating the amplitude average value B1 of the maternal QRS wave band and the amplitude average value B2 of the fetal QRS wave band respectively;
the ratio of the amplitude average value B1 to the amplitude average value B2 is calculated as an amplitude ratio p.
5. The method for displaying maternal-fetal mixed electrocardiosignals according to claim 4, wherein the average value B1 of the amplitudes of the maternal QRS wave bands is calculated according to the amplitudes of the maternal QRS wave bands within a latest preset time range or a preset number; the average value of the amplitudes of the fetal QRS bands B2 is calculated based on the amplitudes of the most recent pre-determined time frame or a pre-determined number of fetal QRS bands.
6. The method for displaying mother-fetus mixed electrocardiosignals according to claim 4, wherein the average value B1 of the amplitudes of the maternal QRS wave bands is calculated according to the amplitudes of all the maternal QRS wave bands displayed in the current screen; the average value of the amplitudes of said fetal QRS bands B2 is calculated from the amplitudes of all of said fetal QRS bands displayed in the current screen.
7. The method for displaying mixed maternal and fetal cardiac signals as claimed in any one of claims 3 to 6, wherein scaling said maternal QRS band and/or said fetal QRS band according to said amplitude ratio to obtain a scaled mixed cardiac signal, and displaying a waveform curve of said scaled mixed cardiac signal comprises:
presetting an ideal amplitude ratio q of the maternal QRS wave band and the fetal QRS wave band;
establishing a rectangular coordinate system in a drawing area, and drawing data points of the mother-fetus mixed signals in real time;
detecting whether the current data point is the data point of the parent QRS wave band, and if the data point is not the data point of the parent QRS wave band, performing point tracing drawing on the current data point; if the data point is the data point of the parent QRS wave band, multiplying the current data point by q/p to obtain a new data point, and then drawing the new data point; or
Detecting whether the current data point is the data point of the fetal QRS wave band, and if the data point is not the data point of the maternal QRS wave band, performing tracing drawing by using the current data point; and if the data point is the data point of the parent QRS wave band, multiplying the current data point by p/q to obtain a new data point, and then performing point drawing by using the new data point.
8. The method for displaying maternal-fetal mixed electrocardiosignals according to claim 7, wherein in the step of detecting whether the current data point is the data point of the fetal QRS wave band, when the current data point is the data point of the fetal QRS wave band, the waveform curves of the mixed electrocardiosignals are displayed in curves with different characteristics.
9. The method for displaying maternal-fetal mixed electrocardiosignals according to claim 7, wherein in the process of detecting whether the current data point is the data point of the maternal QRS wave band or the data point of the fetal QRS wave band, when the current data point is detected to be the data point of the maternal QRS wave band or the data point of the fetal QRS wave band, a mark is made to indicate that the current corresponding wave band of the data point is the maternal QRS signal or the fetal QRS signal.
10. A display device for mixed electrocardiosignals of mother and fetus is characterized by comprising:
the acquisition unit is used for acquiring maternal-fetal mixed electrocardiosignals;
the analysis unit is connected with the acquisition unit and is used for analyzing the acquired maternal-fetal mixed electrocardiosignals and identifying a maternal QRS wave band and a fetal QRS wave band from the maternal-fetal mixed electrocardiosignals;
the calculating unit is connected with the maternal-fetal mixed electrocardiosignal analyzing unit and is used for calculating the amplitude ratio of the maternal QRS wave band and the fetal QRS wave band according to the identified maternal QRS wave band and the identified fetal QRS wave band;
and the drawing unit is connected with the calculating unit and is used for zooming the parent QRS wave band and/or the fetus QRS wave band according to the amplitude ratio to obtain a zoomed mixed electrocardiosignal and displaying a waveform curve of the zoomed mixed electrocardiosignal.
11. A maternal and fetal monitoring device comprising a display device, a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the method for displaying a maternal and fetal mixed electrocardiographic signal according to any one of claims 1 to 9 when executing the computer program, the display device displaying a waveform curve of the scaled mixed electrocardiographic signal.
12. A computer-readable storage medium storing computer instructions for causing a computer to execute the method for displaying a maternal-fetal mixed electrocardiographic signal according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873390.6A CN110613444B (en) | 2019-09-16 | 2019-09-16 | Method and device for displaying mother-fetus mixed electrocardiosignals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910873390.6A CN110613444B (en) | 2019-09-16 | 2019-09-16 | Method and device for displaying mother-fetus mixed electrocardiosignals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110613444A true CN110613444A (en) | 2019-12-27 |
| CN110613444B CN110613444B (en) | 2022-06-07 |
Family
ID=68923416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910873390.6A Active CN110613444B (en) | 2019-09-16 | 2019-09-16 | Method and device for displaying mother-fetus mixed electrocardiosignals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110613444B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116152385A (en) * | 2023-04-21 | 2023-05-23 | 索思（苏州）医疗科技有限公司 | Physiological signal drawing method and device, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102178522A (en) * | 2011-04-29 | 2011-09-14 | 华南理工大学 | Method for detecting and locating R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of mother and fetus |
| CN103720469A (en) * | 2014-01-02 | 2014-04-16 | 山东大学 | Wearable type dynamitic maternal fetus electrocardio-detecting device |
| CN104027105A (en) * | 2014-04-23 | 2014-09-10 | 河南科技大学 | Novel maternal and fetal electrocardiogram separation method |
| CN104792621A (en) * | 2015-04-21 | 2015-07-22 | 山东大学 | System and method for monitoring multiple precursory information of rock sample breaking |
| CN106691376A (en) * | 2016-11-30 | 2017-05-24 | 深圳市科曼医疗设备有限公司 | Method and device for adaptively filtering electrocardiograph signals |
| WO2018023697A1 (en) * | 2016-08-05 | 2018-02-08 | 深圳先进技术研究院 | Fetal electrocardiosignal separation method and device |
-
2019
- 2019-09-16 CN CN201910873390.6A patent/CN110613444B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102178522A (en) * | 2011-04-29 | 2011-09-14 | 华南理工大学 | Method for detecting and locating R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of mother and fetus |
| CN103720469A (en) * | 2014-01-02 | 2014-04-16 | 山东大学 | Wearable type dynamitic maternal fetus electrocardio-detecting device |
| CN104027105A (en) * | 2014-04-23 | 2014-09-10 | 河南科技大学 | Novel maternal and fetal electrocardiogram separation method |
| CN104792621A (en) * | 2015-04-21 | 2015-07-22 | 山东大学 | System and method for monitoring multiple precursory information of rock sample breaking |
| WO2018023697A1 (en) * | 2016-08-05 | 2018-02-08 | 深圳先进技术研究院 | Fetal electrocardiosignal separation method and device |
| CN106691376A (en) * | 2016-11-30 | 2017-05-24 | 深圳市科曼医疗设备有限公司 | Method and device for adaptively filtering electrocardiograph signals |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116152385A (en) * | 2023-04-21 | 2023-05-23 | 索思（苏州）医疗科技有限公司 | Physiological signal drawing method and device, electronic equipment and storage medium |
| CN116152385B (en) * | 2023-04-21 | 2023-07-07 | 索思（苏州）医疗科技有限公司 | Physiological signal drawing method and device, electronic equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110613444B (en) | 2022-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5271718B2 (en) | How to identify fetal and maternal ECGs across multiple time segments | |
| CN111067511B (en) | Method, device and equipment for determining key points in electrocardiogram data | |
| CN107233093B (en) | R wave detection method and device and electronic equipment | |
| US11253204B2 (en) | Method for assessing electrocardiogram signal quality | |
| CN110432895B (en) | Training data processing method, electrocardiographic waveform detection method and electronic equipment | |
| CN109044280B (en) | Sleep staging method and related equipment | |
| CN103417206A (en) | Method and system for eliminating power frequency interference in ECG | |
| CN105078505A (en) | Physiological signal processing method and processing device | |
| EP4108167A1 (en) | Method and device for generating photoplethysmography signal | |
| CN110613444B (en) | Method and device for displaying mother-fetus mixed electrocardiosignals | |
| CN112294340A (en) | Method, system, storage medium and computer equipment for quickly and automatically removing myoelectric artifacts | |
| CN110420022B (en) | P wave detection method based on dual-density wavelet transform | |
| CN116350238A (en) | Self-adaptive threshold R wave detection method, device, equipment and storage medium | |
| CN108125678B (en) | Electrocardiosignal direction detection method and device and electronic equipment | |
| CN115969398B (en) | Blink detection method and device | |
| CN110604564B (en) | Electrode system, fetal electrocardiosignal acquisition and measurement method and device | |
| CN108694355B (en) | Signal processing method and device | |
| CN110613442B (en) | Method and device for monitoring contraction activity of mother uterus | |
| CN104490389A (en) | Wearable device for detecting fetal movements and method for detecting fetal movements | |
| JP6180812B2 (en) | Sleep state determination device | |
| CN115969393A (en) | Method, device and equipment for acquiring sleep depth measurement index and storage medium | |
| CN108937920B (en) | Ventricular fibrillation signal detection method and system and ventricular fibrillation detection device | |
| JP6706996B2 (en) | Biological signal processing device, abnormality determination method and program | |
| CN110916649B (en) | Processing device, processing method and detection device for long-range electrocardiogram scatter diagram | |
| Jokić et al. | An efficient ECG modeling for heartbeat classification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |