CN116682450A - Method, device, system and storage medium for synchronizing heart sound and electrocardiosignals - Google Patents
Method, device, system and storage medium for synchronizing heart sound and electrocardiosignals Download PDFInfo
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Abstract
The application provides a heart sound electrocardiosignal synchronization method, a heart sound electrocardiosignal synchronization device, a heart sound electrocardiosignal synchronization system and a storage medium. The synchronization method comprises the following steps: performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data; obtaining delay time according to an electrocardiograph conditioning process and a heart sound conditioning process; delaying the first heart sound signal data according to the delay time to obtain second heart sound signal data; if the first heart sound in the second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data; and outputting the second heart sound signal data and the first electrocardiosignal data. The heart sounds and the electrocardio are primarily synchronized through time delay, and the fine tuning synchronization is realized for the time compensation of the second heart sound signal, so that the heart sounds and the electrocardio are precisely synchronized.
Description
Technical Field
The present application relates to the field of signal processing technologies, and in particular, to a method, an apparatus, a system, and a storage medium for synchronizing cardiac sound and cardiac electrical signals.
Background
The electrocardiogram can reflect the electric activity process of the heart, and has important reference value for heart diseases such as arrhythmia, conduction disorder, myocardial infarction and the like. The electrocardiographic phonocardiogram is based on the traditional electrocardiograph, a phonocardiogram acquisition sensor is added, heart sound signals are collected, the electrocardiographic phonocardiogram is drawn by combining electrocardiographic signals, heart problems are diagnosed according to the electrocardiographic phonocardiogram, and clinical assistance is provided for doctors. Compared with the traditional electrocardiogram, the electrocardiographic image has more data dimension due to the addition of heart sound signals, can find more types of problems, and is more accurate in diagnosis of the existing heart problems than the traditional electrocardiogram.
Because the electrocardio signals and the heart sound signals are generated in the process of systole and diastole of the heart, the two signals have corresponding relations in the time domain, and the subsequent disease diagnosis can be accurately carried out by means of the time sequence synchronization relation of the electrocardio signals and the heart sound signals.
In the prior art, in order to realize the synchronization of electrocardiosignals and heart sound signals, the Chinese patent with publication number of CN109381177A solves the problem of difficult synchronization of the heart sound and electrocardiosignals of the electronic stethoscope by designing a probe for heart sound and electrocardiosignal synchronous measurement and arranging a posture sensor. However, because the generation principle of the heart sound signal and the electrocardiosignal is different, compared with the heart sound signal, the electrocardiosignal has substrate drift and is interfered by a power frequency power supply, the conditioning process of the electrocardiosignal is more complex and takes more time, and the accurate synchronization of the data processing end electrocardiosignal and the heart sound signal can not be realized only by improving the probe end.
Disclosure of Invention
The application aims to solve the technical problem that the heart sound signal and the electrocardiosignal cannot be accurately synchronized in the prior art, and particularly the heart sound signal and the electrocardiosignal cannot be accurately synchronized at a data processing end, and provides a heart sound electrocardiosignal synchronization method, a heart sound electrocardiosignal synchronization device, a heart sound electrocardiosignal synchronization system and a storage medium.
In order to achieve the above object of the present application, according to a first aspect of the present application, there is provided a heart sound electrocardiograph signal synchronization method including: acquiring original heart sound signal data and original electrocardiosignal data; performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data; obtaining delay time according to an electrocardiograph conditioning process and a heart sound conditioning process; delaying the first heart sound signal data according to the delay time to obtain second heart sound signal data; if the first heart sound in the second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data; and outputting the second heart sound signal data and the first electrocardiosignal data.
The technical scheme is as follows: the heart sounds and the electrocardiosignals are respectively conditioned, delay time is obtained according to the difference of the conditioning processes of the heart sounds and the electrocardiosignals, the heart sounds and the electrocardiosignals are primarily synchronized after being delayed according to the delay time, and the time difference caused by inconsistent conditioning processes and signal acquisition is greatly reduced, so that the time difference of the heart sounds and the electrocardiosignals is in a smaller range for subsequent fine adjustment; according to the application, the first heart sound in the second heart sound signal data is positioned between the R wave and the T wave of the first electrocardiosignal data as a synchronization standard, so that the accurate diagnosis of diseases by related personnel is facilitated, and if the first heart sound in the second heart sound signal data is not positioned between the R wave and the T wave of the first electrocardiosignal data, the time compensation of the second heart sound signal data is performed to realize fine adjustment, and the accurate synchronization of the heart sound and the electrocardiosignal is ensured.
In a preferred embodiment, the electrocardiograph signal data is matched with electrocardiograph interference filtering options, the electrocardiograph conditioning process is configured according to the electrocardiograph interference filtering options, and different electrocardiograph interference filtering options correspond to different electrocardiograph conditioning durations, wherein the electrocardiograph interference filtering options comprise anti-base drift, power harmonic removal, or anti-base drift and power harmonic removal.
The technical scheme is as follows: and matching corresponding electrocardio interference filtering options according to the characteristics of electrocardio signal data to obtain a corresponding electrocardio conditioning process and electrocardio conditioning duration, further obtain different correction times, avoid unnecessary delay and improve efficiency.
In a preferred embodiment, the delay time is obtained based on an electrocardiographic conditioning process and a heart sound conditioning process, specifically: acquiring corresponding preset electrocardio conditioning duration based on electrocardio interference filtering options; acquiring a preset heart sound conditioning duration corresponding to a heart sound conditioning process; and obtaining a difference value between the preset electrocardiographic conditioning duration and the preset heart sound conditioning duration, wherein the difference value is a delay time.
The technical scheme is as follows: the preset heart sound conditioning duration and the preset electrocardio conditioning duration are empirical values obtained according to multiple tests, field tests are not needed, the signal synchronization process is simplified, and the signal synchronization efficiency is improved.
In a preferred embodiment, when the original heart sound signal data is subjected to heart sound conditioning to obtain more than two paths of first heart sound signal data: acquiring delay time corresponding to each path of first heart sound signal based on an electrocardio conditioning process and an acquisition process of each path of first heart sound signal; each path of first heart sound signal is delayed according to the corresponding delay time to obtain corresponding second heart sound signal data; and if the first heart sound in any path of second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the path of second heart sound signal data until the first heart sound in the path of second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data.
The technical scheme is as follows: when more than two paths of first heart sound signal data are extracted, each path of first heart sound signal obtains different delay time according to the self-acquisition process, so that each path of first heart sound signal is accurately synchronous with the first electrocardiosignal data.
In a preferred embodiment, the heart sound conditioning process specifically comprises: performing heart sound low-pass filtering on the original heart sound data to obtain a first low-frequency heart sound signal, performing heart sound band-pass filtering on the original heart sound data to obtain a first intermediate-frequency heart sound signal, and performing heart sound high-pass filtering on the original heart sound data to obtain a first high-frequency heart sound signal.
The technical scheme is as follows: the heart sound signal data are divided into three signals of high, medium and low frequency, and the three signals are respectively synchronous with the electrocardiosignals, so that the heart sound signal data are beneficial to assisting subsequent related personnel in diagnosing diseases, and the diagnosis accuracy is improved.
In a preferred embodiment, the heart sound low pass filtering employs a butterworth heart sound low pass filtering algorithm, the heart sound band pass filtering employs a butterworth heart sound band pass filtering algorithm, and the heart sound high pass filtering employs a butterworth heart pitch pass filtering algorithm.
The technical scheme is as follows: the butterworth filter has the advantage that the frequency response curve in the passband is maximally flat, without ripple, and gradually drops to zero in the passband.
In a preferred embodiment, the heart sound time curve is drawn based on the second heart sound signal data, the electrocardiographic time curve is drawn based on the first heart sound signal data, and the heart sound time curve and the electrocardiographic time curve are synchronously displayed.
The technical scheme is as follows: is convenient for observation and auxiliary diagnosis.
In order to achieve the above object of the present application, according to a second aspect of the present application, there is provided a heart sound signal and electrocardiosignal synchronizing apparatus comprising: the data acquisition module acquires original heart sound signal data and original electrocardiosignal data; the signal conditioning module is used for performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data; the delay time acquisition module is used for acquiring delay time according to an electrocardiograph conditioning process and a heart sound conditioning process; the delay module delays the first heart sound signal data according to delay time to obtain second heart sound signal data; the judging module is used for carrying out time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is positioned between the R wave and the T wave of the first heart sound signal data if the first heart sound in the second heart sound signal data is not positioned between the R wave and the T wave of the first heart sound signal data; and the output module outputs the second heart sound signal data and the first electrocardiosignal data.
In order to achieve the above object of the present application, according to a third aspect of the present application, there is provided an electronic apparatus comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform a method of heart sound electrocardiograph signal synchronization according to the first aspect of the present application.
In order to achieve the above object of the present application, according to a fourth aspect of the present application, there is provided a computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements a heart sound electrocardiograph signal synchronization method according to the first aspect of the present application.
In order to achieve the above object of the present application, according to a fifth aspect of the present application, there is provided a system including a heart sound electrocardiograph signal acquisition device, a processor, and a display, the heart sound electrocardiograph signal acquisition device acquiring original heart sound signal data and original electrocardiograph signal data and transmitting them to the processor, the processor executing the steps of a heart sound electrocardiograph signal synchronization method according to the first aspect of the present application; the display draws a heart sound time curve based on the second heart sound signal data, draws an electrocardio time curve based on the first heart sound signal data, and synchronously displays the heart sound time curve and the electrocardio time curve.
Drawings
FIG. 1 is a flowchart of a method for synchronizing heart sound and electrocardiosignals according to an embodiment of the application;
FIG. 2 is a schematic diagram of a periodic waveform of an existing electrocardiograph signal;
FIG. 3 is a waveform schematic diagram of raw heart sound signal data;
FIG. 4 is a heart sound time curve and an electrocardiographic time curve synchronously displayed in another embodiment of the present application;
FIG. 5 is a schematic diagram of a center tone management process according to another embodiment of the present application;
FIG. 6 is a schematic diagram of a portion of a signal conditioning process in an application scenario of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to another embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
In the description of the present application, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In the description of the present application, unless otherwise specified and defined, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, mechanical or electrical, or may be in communication with each other between two elements, directly or indirectly through intermediaries, as would be understood by those skilled in the art, in view of the specific meaning of the terms described above.
The application discloses a heart sound electrocardiosignal synchronization method, in one embodiment, a flow chart of the method is shown in fig. 1, and the method comprises the following steps:
step S1, acquiring original heart sound signal data and original electrocardiosignal data. Specifically, the original heart sound signal data and the original electrocardiosignal data are acquired synchronously, and preferably, the original heart sound signal data and the original electrocardiosignal data are acquired synchronously.
The computer needs to sample the signals when collecting the signals, on the one hand, useful information in the signals is kept as much as possible, and on the other hand, performance is considered. The higher the sampling rate, the more information remains, but the higher the performance requirements. Therefore, a moderate sampling frequency is important for heart sound electrocardiographic diagnosis, and through medical and informatics measurement, the sampling frequency of the application is preferably 500Hz.
Step S2, performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data.
The process of electrocardiographic conditioning is preferably, but not limited to, anti-base bleaching and/or de-mains harmonics. In the process of acquiring the electrocardiosignal, the measured electrocardiosignal is larger or smaller as a whole due to the electric signal carried on the surface of skin and the like, and the base drift is usually filtered by adopting a high-pass filtering algorithm. The frequency of the power harmonic interference is related to the power frequency, for example, 220V/50Hz mains supply is adopted, all acquired signals are possibly substituted into 50Hz power frequency interference, and preferably, 50Hz band reject filter algorithm is adopted to remove the power harmonic interference.
The heart sound conditioning process carries out different treatments according to actual demands, for example, when only one path of heart sound signal is needed for auxiliary diagnosis, the original heart sound signal data is not needed to be treated in the heart sound conditioning process, the treatment duration is 0, and when more than two paths of heart sound signals with different frequency ranges are needed for auxiliary diagnosis, the heart sound conditioning process carries out frequency division treatment on the original heart sound signal data.
And step S3, obtaining delay time according to an electrocardiograph conditioning process and a heart sound conditioning process. The time difference can be obtained according to the time difference between the electrocardio conditioning process and the heart sound conditioning process, and the time difference is used as the delay time.
And S4, delaying the first heart sound signal data according to the delay time to obtain second heart sound signal data.
And S5, if the first heart sound in the second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data.
Step S6, outputting second heart sound signal data and first electrocardiosignal data.
Fig. 2 shows a schematic waveform of one cycle of an electrocardiograph signal, and two waves labeled "R" and "T" in fig. 2 are called an R wave and a T wave, respectively. Fig. 3 shows a schematic waveform diagram of heart sound signal data in one period, and waves labeled "1", "2", "3" in fig. 3 represent first heart sound, second heart sound, and third heart sound, respectively. Fig. 4 shows a schematic diagram of the heart sound and the electrocardiograph in synchronization, wherein the upper curve in fig. 4 represents the electrocardiographic time curve, the lower curve in fig. 4 represents the heart sound time curve, and it can be seen from fig. 4 that the first heart sound in the heart sound time curve is just between the R wave and the T wave of the electrocardiographic time curve, and both are synchronized.
In this embodiment, preferably, the specific process of step S5 is: identifying a first heart sound time point (preferably but not limited to a first heart sound start time point) from the second heart sound signal data, and identifying an R-wave time point (preferably but not limited to an R-wave end time point) and a T-wave time point (preferably but not limited to a T-wave start time point) from the first heart sound signal data; and if the first heart sound time point is not located between the R wave time point and the T wave time point, performing time compensation on the second heart sound signal data until the first heart sound time point is located between the R wave time point and the T wave time point. In this embodiment, preferably, the specific process of performing time compensation on the second heart sound signal data includes: the second heart sound signal data is shifted forward (right in fig. 4) when the first heart sound is located before the R wave (i.e., when the first heart sound is located to the left of the R wave in fig. 4) and shifted backward (left in fig. 4) when the first heart sound is located after the T wave (i.e., when the first heart sound is located to the right of the T wave in fig. 4).
In this embodiment, in order to further improve the synchronicity of the electrocardiograph signal and the heart sound signal and improve the accuracy of diagnosing the disease by using the electrocardiograph and heart sound synchronization, preferably, in step S5, when the first heart sound in the second heart sound signal data is located between the R wave and the T wave of the first electrocardiograph signal data, the method further includes a secondary judgment and compensation step, where the secondary judgment and compensation step specifically includes:
step a, setting a time interval after the R-wave time point of the first electrocardiograph signal data (i.e. when the first heart sound is located on the right side of the R-wave in FIG. 4)T RR Represents the interval time between two adjacent R waves in the first electrocardiosignal data, K represents a proportionality coefficient larger than 1,/for>Representing a central time point of the time interval, wherein Δt represents a preset time deviation;
step b, judging whether the first heart sound time point in the second heart sound signal data is positioned in a time interval or not: if the first heart sound time point in the second heart sound signal data is located in the time interval, executing the step 6, and outputting the second heart sound signal data and the first electrocardiosignal data; and if the first heart sound time point in the second heart sound signal data is not located in the time interval, performing secondary compensation on the second heart sound signal data until the first heart sound time point in the second heart sound signal data is located in the time interval, and executing the step S6. The specific process of the secondary compensation comprises the following steps: the second heart sound signal data is shifted forward (right in fig. 4) when the first heart sound time point is located before the time interval (i.e., to the left of the time interval), and shifted backward (left in fig. 4) when the first heart sound time point is located after the time interval (i.e., to the right of the time interval).
In this embodiment, the proportionality coefficient K may be set empirically, however, if the proportionality coefficient K is selected inappropriately, there may be inapplicable situations for some human bodies due to differences in the electrocardiosignals of different human bodies, and further preferably, the heart rate is extracted based on the first electrocardiosignal data or the original electrocardiosignal data, the magnitude of the proportionality coefficient K is set based on the heart rate, and the greater the heart rate, the greater the proportionality coefficient K is positively correlated with the two.
In another embodiment, the electrocardiograph signal data is matched with electrocardiograph interference filtering options, the electrocardiograph conditioning process is configured according to the electrocardiograph interference filtering options, and different electrocardiograph interference filtering options correspond to different electrocardiograph conditioning durations, wherein the electrocardiograph interference filtering options comprise base drift resistance, power harmonic interference removal, power harmonic removal, or base drift resistance and power harmonic removal.
In this embodiment, the electrocardiographic interference filtering option may select only the anti-base-drift option, or select only the power-source harmonic-removal option, or select both the anti-base-drift option and the power-source harmonic-removal option according to the original electrocardiographic signal condition. And (3) carrying out test verification for a plurality of times in advance, obtaining an anti-base bleaching treatment duration T1 (preferably but not limited to an average anti-base bleaching treatment duration) and a power-off harmonic treatment duration T2 (preferably but not limited to an average power-off harmonic treatment duration), and obtaining a preset electrocardio conditioning duration T3 (T3=T1 or T3=T2 or T3=T1+T2) according to the actual selection of an electrocardio interference filtering option.
In this embodiment, preferably, the interference removing process is adaptively performed according to the interference condition in the original electrocardiograph signal data, the electrocardiograph interference filtering option is selected according to the actual condition of the original electrocardiograph signal data, the base drift and harmonic test is performed after the original electrocardiograph signal data is obtained, the base drift resisting option is started if the base drift is greater than a preset base drift threshold value, and the power harmonic removing option is started if the power harmonic is greater than a preset harmonic threshold value. Therefore, corresponding interference filtering options are started according to the actual condition of the original electrocardiosignal data, unnecessary processing can be avoided, and efficiency is improved. Further preferably, if the empirical value of the test time of the base drift and the harmonic test is set to be T4, the preset electrocardiographic conditioning duration T3 should be added with T4 to achieve accurate synchronization of heart sounds and electrocardiograms.
Fig. 6 shows a partial flow diagram of signal data processing in an application scenario of the present embodiment. And the electrocardio-heart sound signal acquisition device sends a data packet to the data processing end. After the data processing end receives certain data in the serial port buffer area, the data processing end executes: detecting a data packet head, after determining the data packet head as a correct data packet, decomposing the data packet to obtain electrocardiograph and heart sound data, and temporarily storing the data in a buffer area; and extracting electrocardio data from the temporary storage area as original electrocardio signal data, detecting base drift and power harmonic waves of the original electrocardio signal data, and opening or closing base drift resistance and power harmonic wave resistance options according to a judging result.
In another embodiment, the delay time TA is obtained based on an electrocardiographic conditioning process and a heart sound conditioning process, specifically: acquiring corresponding preset electrocardio conditioning duration T3 based on electrocardio interference filtering options; acquiring a preset heart sound conditioning duration TB corresponding to a heart sound conditioning process; and obtaining a difference value (T3-TB) between the preset electrocardio conditioning duration and the preset heart sound conditioning duration, wherein the difference value is a delay time TA. The delay time is obtained according to the preset electrocardio conditioning duration and the preset heart sound conditioning duration, and is not obtained through actual tests, so that electrocardio conditioning, heart sound conditioning and heart sound delay processing can be synchronously carried out, and the efficiency is improved.
In another embodiment, when the heart sound conditioning is performed on the original heart sound signal data to obtain more than two paths of first heart sound signal data for the case of requiring multiple paths of signals to assist in disease diagnosis:
acquiring delay time corresponding to each path of first heart sound signal based on an electrocardiograph conditioning process and a conditioning process of each path of first heart sound signal;
each path of first heart sound signal is delayed according to the corresponding delay time to obtain corresponding second heart sound signal data;
and if the first heart sound in any path of second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the path of second heart sound signal data until the first heart sound in the path of second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data.
In this embodiment, in order to facilitate observation of heart sound signals in different frequency bands, it is further preferable that the heart sound conditioning process specifically includes: performing heart sound low-pass filtering on the original heart sound data to obtain a first low-frequency heart sound signal, performing heart sound band-pass filtering on the original heart sound data to obtain a first intermediate-frequency heart sound signal, and performing heart sound high-pass filtering on the original heart sound data to obtain a first high-frequency heart sound signal. Further preferably, the heart sound low-pass filtering adopts a Butterworth heart sound low-pass filtering algorithm, the heart sound band-pass filtering adopts a Butterworth heart sound band-pass filtering algorithm, and the heart sound high-pass filtering adopts a Butterworth heart pitch-pass filtering algorithm. The method comprises the steps of dividing original heart sound signal data into a first frequency band, a second frequency band and a third frequency band from low frequency to high frequency in a frequency domain, wherein a first frequency band signal is a first low frequency heart sound signal, a second frequency band signal is a first intermediate frequency heart sound signal, and a third frequency band signal is a first high frequency heart sound signal.
In this embodiment, the heart sound low-pass filtering duration Ta, the heart sound band-pass filtering duration Tb, and the heart sound high-pass filtering duration Tc are obtained through multiple tests. The preset heart sound conditioning duration TB of the first low-frequency heart sound signal is Ta, and the delay time TA is (T3-Ta); the preset heart sound conditioning duration TB of the first intermediate frequency heart sound signal is Tb, and the delay time TA is (T3-Tb); the preset heart sound conditioning duration TB of the first high-frequency heart sound signal is Tc, and the delay time TA is (T3-Tc). The first low-frequency heart sound signal is delayed according to the corresponding delay time to obtain second low-frequency heart sound signal data, the first intermediate-frequency heart sound signal is delayed according to the corresponding delay time to obtain second intermediate-frequency heart sound signal data, and the first high-frequency heart sound signal is delayed according to the corresponding delay time to obtain second high-frequency heart sound signal data. In order to improve efficiency and accuracy of heart sound and electrocardio synchronization, preferably, the three paths of signals adopt the same time compensation reference to perform time compensation, and the time compensation of the second high-frequency heart sound signal data is used as the reference, and the second low-frequency heart sound signal data and the second intermediate-frequency heart sound signal data follow the second high-frequency heart sound signal data to perform time compensation, so that the high-frequency component has steeper waveform change in the time domain, and whether the first heart sound is between the R wave and the T wave of the first electrocardio signal data can be accurately and clearly judged.
In this embodiment, in order to facilitate signal data processing and improve processing efficiency, hardware filtering is set, and a heart sound signal acquired by a heart sound probe is divided into two paths, as shown in fig. 5, original heart sound signal data includes original low-frequency heart sound data and original high-frequency heart sound data, and a heart sound conditioning process specifically includes: performing heart sound low-pass filtering on the original low-frequency heart sound data to obtain a first low-frequency heart sound signal, performing heart sound band-pass filtering on the original low-frequency heart sound data to obtain a first intermediate-frequency heart sound signal, and performing heart pitch-pass filtering on the original high-frequency heart sound data to obtain a first high-frequency heart sound signal.
In another embodiment, the heart sound time curve is drawn based on the second heart sound signal data, the electrocardiographic time curve is drawn based on the first heart sound signal data, and the heart sound time curve and the electrocardiographic time curve are synchronously displayed. Fig. 4 shows a schematic diagram of a heart sound time curve synchronized with an electrocardiographic time curve.
The application also discloses a heart sound signal and electrocardiosignal synchronizing device which is used for realizing the corresponding functions of the heart sound electrocardiosignal synchronizing method, and in one embodiment, the device comprises: the data acquisition module acquires original heart sound signal data and original electrocardiosignal data; the signal conditioning module is used for performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data; the delay time acquisition module is used for acquiring delay time according to an electrocardiograph conditioning process and a heart sound conditioning process; the delay module delays the first heart sound signal data according to delay time to obtain second heart sound signal data; the judging module is used for carrying out time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is positioned between the R wave and the T wave of the first heart sound signal data if the first heart sound in the second heart sound signal data is not positioned between the R wave and the T wave of the first heart sound signal data; and the output module outputs the second heart sound signal data and the first electrocardiosignal data.
In this embodiment, specific execution of the data acquisition module, the signal conditioning module, the delay time acquisition module, the judgment module and the output module may refer to corresponding steps in the heart sound electrocardiosignal synchronization method provided by the present application, and will not be described herein.
The application discloses a computer readable storage medium which stores a computer program, and the computer program realizes the heart sound electrocardiosignal synchronization method provided by the application when being executed by a processor.
The application also discloses a system, which in an embodiment comprises a heart sound electrocardiosignal acquisition device, a processor and a display. The heart sound electrocardiosignal acquisition device acquires original heart sound signal data and original electrocardiosignal data and transmits the data to the processor, and the heart sound electrocardiosignal acquisition device specifically can comprise more than one heart sound probe and more than one electrocardiosignal probe, or comprises more than one heart sound and electrocardio integrated probe. The processor executes the steps of the heart sound electrocardiosignal synchronization method provided by the application. The display draws a heart sound time curve based on the second heart sound signal data, draws an electrocardio time curve based on the first heart sound signal data, and synchronously displays the heart sound time curve and the electrocardio time curve.
The application also discloses an electronic device, which in an embodiment comprises at least one processor; and a memory communicatively coupled to the at least one processor; the memory stores a computer program executable by the at least one processor, so that the at least one processor can execute the heart sound electrocardiosignal synchronization method provided by the application.
Fig. 7 is a schematic structural diagram of an electronic device for implementing a method for synchronizing cardiac sound and cardiac electrical signals according to an embodiment of the present application. The electronic device may comprise a processor 10, a memory 11, a communication bus 12 and a communication interface 13, and may further comprise a computer program stored in the memory 11 and executable on the processor 10, such as a heart sound and electrocardiosignal synchronization method program.
The processor 10 may be formed by an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or may be formed by a plurality of integrated circuits packaged with the same function or different functions, including one or more central processing units (Central Processing Unit, CPU), a microprocessor, a digital processing chip, a combination of a graphics processor and various control chips, etc. The processor 10 is a Control Unit (Control Unit) of the electronic device, connects various components of the entire electronic device using various interfaces and lines, and executes various functions of the electronic device and processes data by running or executing programs or modules stored in the memory 11 (for example, executing an image correction method program or the like), and calling data stored in the memory 11.
The memory 11 includes at least one type of readable storage medium including flash memory, a removable hard disk, a multimedia card, a card type memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 11 may in some embodiments be an internal storage unit of the electronic device, such as a mobile hard disk of the electronic device. The memory 11 may in other embodiments also be an external storage device of the electronic device, such as a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card) or the like, which are provided on the electronic device. Further, the memory 11 may also include both an internal storage unit and an external storage device of the electronic device. The memory 11 may be used not only for storing application software installed in an electronic device and various types of data, for example, codes of a heart sound and electrocardiosignal synchronization method program and the like, but also for temporarily storing data that has been output or is to be output.
The communication bus 12 may be a peripheral component interconnect standard (Peripheral Component Interconnect, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. The bus is arranged to enable a connection communication between the memory 11 and the at least one processor 10 etc.
The communication interface 13 is used for communication between the above-described electronic device and other devices, including a network interface and a user interface. Optionally, the network interface may include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), typically used to establish a communication connection between the electronic device and other electronic devices. The user interface may be a Display (Display), an input unit such as a Keyboard (Keyboard), or alternatively a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the electronic device and for displaying a visual user interface.
Fig. 7 shows only an electronic device with components, and it will be understood by those skilled in the art that the structure shown in fig. 7 is not limiting of the electronic device and may include fewer or more components than shown, or may combine certain components, or a different arrangement of components.
For example, although not shown, the electronic device may further include a power source (such as a battery) for powering the respective components, and the power source may be logically connected to the at least one processor 10 through a power management device, so as to perform functions of charge management, discharge management, and power consumption management through the power management device. The power supply may also include one or more of any of a direct current or alternating current power supply, recharging device, power failure detection circuit, power converter or inverter, power status indicator, etc. The electronic device may also include various sensors, bluetooth modules, wi-Fi modules, etc., which are not described in detail herein.
It should be understood that the examples are for illustrative purposes only and are not limited to this configuration in the scope of the patent application.
Further, the integrated modules/units of the electronic device 1 may be stored in a computer readable storage medium if implemented in the form of software functional units and sold or used as separate products. The computer readable storage medium may be volatile or nonvolatile. For example, the computer readable medium may include: any entity or device capable of carrying computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-0nly Memory (R0M).
The application also discloses a computer readable storage medium which stores a computer program, and the computer program realizes the heart sound electrocardiosignal synchronization method provided by the application when being executed by a processor.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A heart sound and electrocardiosignal synchronization method, which is characterized by comprising the following steps:
acquiring original heart sound signal data and original electrocardiosignal data;
performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data;
obtaining delay time according to an electrocardiograph conditioning process and a heart sound conditioning process;
delaying the first heart sound signal data according to the delay time to obtain second heart sound signal data;
if the first heart sound in the second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data;
and outputting the second heart sound signal data and the first electrocardiosignal data.
2. The method for synchronizing cardiac sound and electrocardiosignals according to claim 1, wherein electrocardiosignal data is matched with electrocardiosignal interference filtering options, the electrocardiosignal conditioning process is configured according to the electrocardiosignal interference filtering options, and different electrocardiosignal filtering options correspond to different electrocardiosignal conditioning time lengths; the electrocardio interference filtering options comprise base drift resistance, power harmonic removal, base drift resistance and power harmonic removal.
3. The heart sound electrocardiosignal synchronization method as claimed in claim 2, wherein the delay time is obtained based on an electrocardio conditioning process and a heart sound conditioning process, and is specifically as follows:
acquiring corresponding preset electrocardio conditioning duration based on electrocardio interference filtering options;
acquiring a preset heart sound conditioning duration corresponding to a heart sound conditioning process;
and obtaining a difference value between the preset electrocardiographic conditioning duration and the preset heart sound conditioning duration, wherein the difference value is a delay time.
4. A method for synchronizing cardiac sound and cardiac electrical signals as claimed in claim 1, 2 or 3, wherein when the original cardiac sound signal data is subjected to cardiac sound conditioning to obtain more than two paths of first cardiac sound signal data:
acquiring delay time corresponding to each path of first heart sound signal based on an electrocardiograph conditioning process and a conditioning process of each path of first heart sound signal;
each path of first heart sound signal is delayed according to the corresponding delay time to obtain corresponding second heart sound signal data;
and if the first heart sound in any path of second heart sound signal data is not located between the R wave and the T wave of the first electrocardiosignal data, performing time compensation on the path of second heart sound signal data until the first heart sound in the path of second heart sound signal data is located between the R wave and the T wave of the first electrocardiosignal data.
5. The method for synchronizing cardiac sound and electrocardiosignals according to claim 4, wherein the process of conditioning the cardiac sound comprises the following steps:
performing heart sound low-pass filtering on the original heart sound data to obtain a first low-frequency heart sound signal, performing heart sound band-pass filtering on the original heart sound data to obtain a first intermediate-frequency heart sound signal, and performing heart sound high-pass filtering on the original heart sound data to obtain a first high-frequency heart sound signal.
6. The heart sound electrocardiosignal synchronization method of claim 5 wherein the heart sound low-pass filtering adopts a Butterworth heart sound low-pass filtering algorithm, the heart sound band-pass filtering adopts a Butterworth heart sound band-pass filtering algorithm, and the heart sound high-pass filtering adopts a Butterworth heart pitch-pass filtering algorithm.
7. A method of synchronizing cardiac sound and cardiac electrical signals as claimed in claim 1 or 2 or 3 or 5 or 6, wherein the cardiac sound time profile is drawn based on the second cardiac sound signal data, the cardiac electrical time profile is drawn based on the first cardiac electrical signal data, and the cardiac sound time profile and the cardiac electrical time profile are displayed simultaneously.
8. A heart sound signal and electrocardio signal synchronizer, comprising:
the data acquisition module acquires original heart sound signal data and original electrocardiosignal data;
the signal conditioning module is used for performing electrocardiographic conditioning on the original electrocardiographic signal data to obtain first electrocardiographic signal data, and performing heart sound conditioning on the original heart sound signal data to obtain first heart sound signal data;
the delay time acquisition module is used for acquiring delay time according to an electrocardiograph conditioning process and a heart sound conditioning process;
the delay module delays the first heart sound signal data according to delay time to obtain second heart sound signal data;
the judging module is used for carrying out time compensation on the second heart sound signal data until the first heart sound in the second heart sound signal data is positioned between the R wave and the T wave of the first heart sound signal data if the first heart sound in the second heart sound signal data is not positioned between the R wave and the T wave of the first heart sound signal data;
and the output module outputs the second heart sound signal data and the first electrocardiosignal data.
9. A computer readable storage medium storing a computer program, wherein the computer program when executed by a processor implements a heart sound electrocardiograph signal synchronization method according to any one of claims 1 to 7.
10. The system is characterized by comprising a heart sound electrocardiosignal acquisition device, a processor and a display;
the heart sound electrocardiosignal acquisition device acquires original heart sound signal data and original electrocardiosignal data and transmits the data to the processor;
a processor executing the steps of a method for synchronizing heart sound and electrocardiosignals according to any one of claims 1 to 7;
the display draws a heart sound time curve based on the second heart sound signal data, draws an electrocardio time curve based on the first heart sound signal data, and synchronously displays the heart sound time curve and the electrocardio time curve.
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