基于角度与幅值特征的QRS波群起止点识别  

Identification of Onset and Offset of QRS Complexes Based on the Characteristics of Angle and Amplitude

作　　者：李阳[1] 洪跃[1] 王俊杰[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《生物医学工程学杂志》2014年第3期572-576,共5页Journal of Biomedical Engineering

摘　　要：为了准确快速识别不同形态心电图(ECG)信号QRS波群的起止点,本文采用三次局部变换找出可能的起止点,然后再根据这些疑似起止点之间构成的角度与幅值特征,按由试验得出的规则流程从疑似起止点中选出正确的QRS波群的起止点。该方法充分利用了QRS波群的角度与幅值特征,只需做简单的运算就能得到结果,具有快速准确且对不同形态ECG信号适应性强的特点。利用MIT-BIH心电图数据库对该方法性能进行测试,取得了较好的效果。In order to quickly and accurately identify the onset and offset of the QRS complex in electrocardiogram （ECG） signal with different forms, a triple local transform method was employed in the present study to detect the suspected onset and offset points of QRS. The accurate onset and offset points of QRS complexes were selected ac- cording to the rules drawn by the trial process based on the characteristics of angle and amplitude constituted within these suspected points. The method makes full advantage of the angle and amplitude characteristics of the QRS com- plex, by which the results can be acquired with some simple arithmetic quickly, accurately and adaptively. The method was investigated with data from the MIT-BIH arrhythmia database and satisfactory results were obtained.

关 键 词：局部变换 角度 幅值 

分 类 号：TN911.7[电子电信—通信与信息系统] R318.4[电子电信—信息与通信工程]