基于零相位的心电信号基线漂移滤波方法的实时性改进  

A Modified Real-time Filtering Method for Removal of Baseline Wander in ECG Signals Based on Zero-phase Filter

作　　者：徐良[1] 陈日清[2] 王祥[2] 彭诚[2] 韩永贵 吴剑[2] 

机构地区：[1]深圳市药品检验所,深圳518057 [2]清华大学深圳研究生院深圳市无损监测与微创医学技术重点实验室,深圳518055 [3]深圳市惠泰医疗器械有限公司,深圳518038

出　　处：《中国医药导刊》2015年第B05期31-35,共5页Chinese Journal of Medicinal Guide

基　　金：深圳市技术开发项目(编号:cxzz20130321094640079);项目名称:基于转子/局灶机理的房颤及复杂心律失常标测系统;深圳市基础研究项目(编号:JCY20130402145002404);项目名称:早期癌组织偏振内窥检测与导航的关键技术研究;深圳市基础研究项目(编号:JCY20140408153331811);项目名称:超声导航技术辅助经皮穿刺胆管置管引流术(PTCD)治疗的研究

摘　　要：心电图是心脏疾病的介入治疗中不可缺少的无创诊断技术。在心电信号采集过程中,基线漂移的实时滤波是很重要的。本文提出了一种基于零相位的心电信号基线漂移实时滤波的改进方法。通过数据延时的方法实现基于零相位滤波器的实时性改进,在继承零相位对基线漂移抑制优点的同时,通过较小的时间延时满足实时性要求。采用CSE多导联数据库和MIT-BIH心律失常数据库比较直接零相位滤波和改进的零相位实时滤波两种滤波效果,实验结果表明两种滤波方法效果相当。As a noninvasive diagnostic technique,the electrocardiogram is indispensable in interventional therapy of heart diseases.During the process of data acquisition,it is important for removing baseline wander in real time.In this paper,we proposed a modified real-time filtering method for removal of baseline wander in ECG signals based on zero-phase filter.The modification of real-time filtering is achieved through the delay of data,which inherits the advantages of zero-phase filter in suppression of baseline wander,and meets the real-time requirement through a small time delay.We compared the results of straight zero-phase filtering and improved zero-phase filtering method by using CSE multi-lead database and MIT-BIH arrhythmia database,the results showed that two methods had the same effect in baseline wander suppression.

关 键 词：基线漂移 零相位滤波器 实时滤波 

分 类 号：R318.04[医药卫生—生物医学工程]