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Method for detecting and locating R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of mother and fetus

An electrocardiographic signal and positioning method technology, which is applied in the field of biomedical engineering to achieve the effects of simple implementation, fast running speed and high accuracy.

Active Publication Date: 2011-09-14
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The algorithms mentioned before have great limitations in this case

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  • Method for detecting and locating R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of mother and fetus
  • Method for detecting and locating R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of mother and fetus
  • Method for detecting and locating R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of mother and fetus

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Embodiment

[0049] figure 1 is the QRS waveform in the existing ECG signal; figure 2 It is the algorithm structure of existing general QRS wave detection;

[0050] Such as image 3 Shown, the detection location method of R wave in the mother of the present invention and fetal electrocardiographic signal QRS wave, comprises the steps:

[0051] (1) Front-end filtering processing, including low-pass filtering, high-pass filtering, differentiator and square operation;

[0052] (2) wavelet decomposition, for the mixed ECG signal through the front-end filtering process in the step (1), according to the characteristics of the signal, need to go through the wavelet decomposition process, to highlight the part of fetal ECG signal R wave more;

[0053] (3) the signal after step (2) is processed adopts Rdetect algorithm to detect the position that the R wave feature point appears in the mother's electrocardiogram QRS wave in the mixed electrocardiogram signal;

[0054] (4) Perform front-end pro...

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Abstract

The invention discloses a method for detecting and locating an R wave in QRS (Quantum Resonance Spectrometer) waves of electrocardiographic signals of a mother and a fetus, which comprises the steps of: front-end filtering: sequentially adopting a low-pass filter, a high-pass filter and a differentiator in a preprocessing procedure; wavelet processing procedure: making the R waves of the electrocardiographic signals of the mother and the fetus relatively more obvious by adopting a wavelet resolution procedure according to the respective medical characteristics, distributed wave bands and amplitude sizes of the electrocardiographic signals of the mother and the fetus; and adaptive threshold R wave judgment, wherein a floating adaptive threshold is adopted in a Rdetect algorithm, firstly, the R wave position of the electrocardiographic signal of the mother is judged, and then is subjected to front-end processing, and the position of the appeared R wave characteristic point in the QRS waves of the electrocardiographic signal of the fetus is located by using the algorithm, and is subjected to post processing and signal adjustment so as to finish detecting the R wave positions of the electrocardiographies of the mother and the fetus on mixed signals. The invention can well achieve the purpose of respectively detecting the collected mixed electrocardiographic signals.

Description

technical field [0001] The invention belongs to the technical field of biomedical engineering, in particular to a method for detecting and locating R waves in QRS waves of electrocardiographic signals of mothers and fetuses. Background technique [0002] Electrocardiogram detection is one of the major technological achievements established in the 20th century and widely used in clinical diagnosis and detection. With the development of science and continuous progress of technology, especially the increasing perfection of computer technology, the development of electrocardiogram detection technology has entered a higher level. QRS complex (QRS Complex) (see appendix figure 1 ) detection is a key issue in the analysis of electrocardiogram (ECG) signals. Only after the QRS wave characteristics (peak point and starting point) are determined can the baseline be calculated, and parameters such as P wave, T wave and ST segment can be detected. basis of analysis. However, due to t...

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Application Information

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IPC IPC(8): A61B5/0456A61B5/352
Inventor 谢胜利蔡坤杨开勇蒋霈霖
Owner SOUTH CHINA UNIV OF TECH
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