基于小波变换的QRS波检测方法研究  

Study of Detection Method on QRS Complexes Based on Wavelet Transform

作　　者：陈真诚[1] 白家莲[1] 

机构地区：[1]中南大学信息物理工程学院生物医学工程研究所,长沙410083

出　　处：《医疗卫生装备》2009年第2期4-6,共3页Chinese Medical Equipment Journal

基　　金：国家高技术研究发展计划(863计划)项目(2007AA02000)

摘　　要：目的:针对没有预先处理的心电图信号中QRS复合波的检测,提出一种基于小波变换的检测方法。方法:采用3种不同性质的小波为母小波对来自国际上广泛承认的心电数据库MIT-BIH Arrhythmia Database中的记录进行小波变换,选取了灵敏度更高的高斯函数一阶小波作为小波函数,并采用时频域相结合的分析方法,检测出QRS突变点。结果:在完全没有预处理的情况下,采用该方法对MIT-BIH Arrhythmia Database中的11幅30 min的心电图信号进行验证,结果表明能较为准确、快速的检测出QRS波。结论:该QRS波检测方法能很好地满足实时心电检测系统的需要,具有较好的应用前景。Objective To present a method based on wavelet transform for detecting the QRS complexes of electrocardiogram （ECG） without preprocessing. Methods By comparing three different kinds of wavelets, the first derivative of Gaussian function wavelet whose coefficient of wavelet is more sensitive adopted for MIT-BIH Arrhythmia Database which is widely and internationally accepted in the end. The catastrophe points of QRS complexes are detected by time-frequency analyzing. Results The method is proved to be precise and effective by applied to detect the QRS complexes of the ECG record provided by MIT-BIH. Conclusion The method is satisfied real time of ECG monitoring system and has preferable potential applieation.

关 键 词：QRS复合波 小波变换 突变点 时频变换 

分 类 号：TP29-AI[自动化与计算机技术—检测技术与自动化装置]