Method and device for detecting P-wave and T-wave in electrocardiogram (ECG) signal

An electrocardiogram and signal technology, applied in the field of signal processing, can solve problems such as complex design, poor P wave detection effect, and reduced algorithm sensitivity, to achieve accurate position detection and improve detectable efficiency

Active Publication Date: 2015-02-04
北京海思敏医疗技术有限公司
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above method has the following problems: the window search method always assumes that P waves and T waves always exist, and when the heart rate is abnormal, the sensitivity of the algorithm is re

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for detecting P-wave and T-wave in electrocardiogram (ECG) signal
  • Method and device for detecting P-wave and T-wave in electrocardiogram (ECG) signal
  • Method and device for detecting P-wave and T-wave in electrocardiogram (ECG) signal

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Embodiment one

[0021] figure 1 It is a method flowchart of an embodiment of the method for detecting P waves and T waves in the electrocardiogram signal provided by the present invention, and the execution body of the method may be a detection device integrated with digital signal processing functions. like figure 1 As shown, the method for detecting P waves and T waves in the electrocardiogram signal specifically includes:

[0022] S101, applying a peak extraction operator and a valley extraction operator to extract the peak signal and the valley signal of the ECG signal to be detected respectively, and determining the sum signal of the peak signal and the valley signal as an intermediate signal;

[0023] For a one-dimensional digital signal f(n) to be filtered with a signal length of N, the nth signal in (n=0,1,2,...,N-1) performs a structural element k(m) with a length of M ), the expansion operation (or corrosion operation) of (m=0,1,2,...,N-1) is: first invert...

Example Embodiment

[0043] Embodiment two

[0044] image 3 The method flowchart of another embodiment of the method for detecting P wave and T wave in the electrocardiogram signal provided by the present invention is as follows figure 1 A specific implementation of the method shown. like image 3 As shown, the method for detecting P wave and T wave in the electrocardiogram signal is the same as figure 1 The difference of the illustrated embodiment is that the above steps 102 and 103 are further refined. Specifically, the refinement steps for step 102 include:

[0045] S301, if the search result shows that there are peaks and / or valleys within the first signal interval from the above starting point, then determine whether the width of the peaks and / or valleys is greater than the first width threshold;

[0046] Specifically, if there are peaks and / or troughs within the specified first signal interval range, it indicates that the interval range may contain P waves. Usually, the P wave has a c...

Example Embodiment

[0058] Embodiment three

[0059] Figure 4 A structural schematic diagram of an embodiment of the device for detecting P waves and T waves in the electrocardiogram signal provided by the present invention, the device shown in the structural schematic diagram can perform the following steps: figure 1 The method steps of the illustrated embodiment. like Figure 4 As shown, the device for detecting P waves and T waves in the electrocardiogram signal specifically includes: a calculation module 41, a first processing module 42 and a second processing module 43; wherein:

[0060] Calculation module 41, is used for applying peak extraction operator and valley extraction operator to extract its peak signal and valley signal respectively for the electrocardiogram ECG signal to be detected, and the sum value signal of peak signal and valley signal is determined as intermediate signal;

[0061] The first processing module 42 is used for starting from the starting position of each R wa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The embodiment of the invention provides a method and device for detecting P-wave and T-wave in an electrocardiogram (ECG) signal. The method comprises the following steps: respectively extracting a wave crest signal and a wave trough signal from the ECG signal to be detected by using a wave crest extraction operator and a wave trough extraction operator, and determining a sum signal of the wave crest signal and the wave trough signal as an intermediate signal; for a starting point position of each original R-wave in the intermediate signal, searching whether a wave crest and/or a wave trough exist(s) or not in a first signal interval range in front of the starting point position, and determining the position of P-wave in the first signal interval range according to the search result; searching whether a wave crest and/or a wave trough exist(s) or not in a second signal interval range behind the starting point position, and determining the position of T-wave in the second signal interval range according to the search result. With the technical scheme provided by the invention, the accurate position detection of P-wave and T-wave in the ECG signal is realized; meanwhile, the detection process of the method is simple, and the detection efficiency is effectively improved.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a method and a device for detecting P waves and T waves in electrocardiogram (ECG) signals. Background technique [0002] It is very important to realize the accurate detection of P wave and T wave in ECG signal in the automatic analysis and diagnosis of ECG signal. At present, the detection methods of P wave and T wave are mainly divided into three categories: one is the window search method, that is, first find the R wave position of the ECG signal, and then use the R wave position as a reference, and then search for a window in a certain area before and after it, In this window, P waves and T waves are detected through various signal changes or feature extraction; the second is the cancellation method, that is, by eliminating the QRS complexes and other noise components that occupy a large energy component, the P waves of interest are highlighted. The third is the w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B5/0452
CPCA61B5/349A61B5/352
Inventor 侯桂文
Owner 北京海思敏医疗技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap