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Electrocardiogram signal detection method and system

A signal detection and electrocardiogram technology, which is applied in diagnostic signal processing, diagnostic recording/measurement, medical science, etc., can solve problems such as small correlation coefficient, failure to reflect the true similarity of waveform, and low calculation efficiency

Active Publication Date: 2017-08-25
释雅心安智慧(西安)医疗科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The correlation coefficient is calculated by using the signal centered on QRS for a period of time before and after. When the signal has interference, the calculated correlation coefficient is naturally small and cannot reflect the true similarity of the waveform
[0005] (2) The detection of premature ventricular beats depends on the width of QRS, and the accuracy of QRS width is often affected by individual waveform differences and noise interference, making the QRS width of supraventricular beats larger than the preset threshold and the QRS width of ventricular beats The width is less than the preset threshold, which will cause misjudgment of ventricular premature beats
[0006] (3) For patients with bundle branch block, the QRS width will also be greater than the preset threshold, which will affect the detection of premature ventricular beats
[0007] (4) The algorithm used to calculate the correlation of heartbeat signals has high complexity and low computational efficiency

Method used

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  • Electrocardiogram signal detection method and system
  • Electrocardiogram signal detection method and system
  • Electrocardiogram signal detection method and system

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Embodiment 1

[0028] figure 1 It is a method flow chart of an embodiment of the electrocardiogram signal detection method provided by the present invention, and the execution body of the method may be a detection device integrating digital signal acquisition and processing functions. Such as figure 1 As shown, the electrocardiogram signal detection method specifically includes:

[0029] S101. Acquire an electrocardiogram signal to be detected, and perform preprocessing.

[0030] In this embodiment, the electrocardiogram signal to be detected is preprocessed by using a band-pass filter such as a frequency band of 0.67 Hz to 40 Hz to suppress low-frequency drift and high-frequency noise interference in the signal, thereby obtaining a relatively pure ECG signal.

[0031] S102. Extract the RR interval corresponding to each beat in the preprocessed electrocardiogram signal, and mark the beat corresponding to the RR interval smaller than the fixed percentage of the RR interval of the base beat...

Embodiment 2

[0043] Figure 2a It is a method flowchart of another embodiment of the electrocardiogram signal detection method provided by the present invention. The method shown in this embodiment can be regarded as figure 1 A specific implementation of the illustrated embodiment. exist figure 1 Based on the method of the illustrated embodiment, Figure 2a The illustrated embodiment further shows a specific method for determining the similarity between the premature heartbeat and the basic heartbeat; the method for determining the ventricular / supraventricular heartbeat by using multi-lead and synchronous time-course electrocardiogram signals to be detected, and using the heartbeat to be detected Method for generating base beats. Such as Figure 2a As shown, the electrocardiogram signal detection method includes:

[0044] S201. Acquire the electrocardiogram signal to be detected, and perform preprocessing. The step content of step S201 is similar to the step content of the aforement...

Embodiment 3

[0065] image 3 A schematic structural diagram of an embodiment of an electrocardiogram signal detection system provided by the present invention, the system shown in the structural schematic diagram can perform as follows figure 1 The method steps of the illustrated embodiment. Such as image 3 As shown, the electrocardiogram signal detection system specifically includes: an acquisition processing module 31, an extraction mark module 32, a difference calculation module 33 and a heart beat type determination module 34; wherein:

[0066] An acquisition processing module 31, configured to acquire the electrocardiogram signal to be detected, and perform preprocessing;

[0067] Extraction marking module 32, for extracting the RR interval corresponding to each heart beat in the electrocardiogram signal after preprocessing, and the heart beat corresponding to the RR interval that is less than the fixed percentage of the RR interval of the basic heart beat in each RR interval is ma...

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Abstract

An embodiment of the invention provides a ventricular / supraventricular premature heart beat detection method and a system thereof, and the method comprises that electrocardiogram signals to be detected are obtained and pre-processed; an RR interval corresponded to each heart beat of pre-processed electrocardiogram signals is extracted; the heart beat corresponded to the RR interval of fixed percentage that is smaller than the RR interval of basic heart beat is marked as premature heart beat; if a QRS main peak of the premature heart beat is in the same direction with the basic heart beat QRS main peak, begging from a peak point of each of the QRS main peaks, amplitude differences of the premature heart beat QRS main peak and the basic heart beat QRS main peak between heat beat amplitudes from each peak point thereof to a time point of a fixed time interval corresponded to the peak values thereof; and each of the premature heartbeat is judged to be ventricular / supraventricular heart beat or not according to the amplitude difference corresponded to each of the premature beat QRS main peak and basic beat QRS main peak. According to the invention, ventricular / supraventricular hear beats of dynamic electrocardiogram are detected.

Description

technical field [0001] The invention relates to the technical field of electrocardiogram (ECG) signal analysis, in particular to an electrocardiogram signal detection method and system. Background technique [0002] In the long-term ambulatory electrocardiogram, the accuracy of automatic identification of ventricular / supraventricular beats is of great significance as an assistant to doctors in issuing test reports and later diagnosis. [0003] In the prior art, there is a method for detecting and processing premature ventricular beats, that is, by first generating a normal heartbeat template, comparing the heartbeat to be detected with the normal heartbeat template, and calculating the correlation coefficient between the two heartbeats, the difference between the RR interval and the waiting time Detecting the QRS width of the cardiac beat completes the detection of the ventricular cardiac beat. But this method has the following defects: [0004] (1) The correlation coeffic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0452
CPCA61B5/72A61B5/349A61B5/366
Inventor 张利军周永军
Owner 释雅心安智慧(西安)医疗科技有限公司
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