嵌入式QT环境下的QRS波群实时检测与分析  

QRS complex real-time detection and analysis with embedded QT creator

作　　者：赵冲[1] 杨恋[1] 何爱军[1] 张广法[1] 

机构地区：[1]南京大学电子科学与工程学院,南京210046

出　　处：《北京生物医学工程》2014年第4期403-407,共5页Beijing Biomedical Engineering

基　　金：国家自然科学基金(61271079);中央高校基本科研基金(021014340054;021014640039)资助

摘　　要：目的 QRS波群的检测是心电图分析的核心技术之一。本文在嵌入式QT环境下实现了一套QRS波群实时检测与分析系统。方法系统采用四点平均对ECG信号进行滤波,再对ECG信号的一二阶差分值进行平滑处理,然后在较短时间窗内实现QRS波的实时精确定位。最后采用MIT-BIH标准数据库对算法效果进行分析。结果对于MIT-BIH标准数据库中的绝大部分心电数据,改进后的算法有96%以上的准确率,运行时间在1 ms左右。结论改进后的算法能够满足远程终端对准确率和运行时间的要求。Objective QRS complex detection is one of the core technologies for ECG analysis. In this paper we implement a QRS complex real-time dectection and analysis system with embedded QT Creator. Methods Firstly, we filter the electrocardiogram signal by using four-point average method, and then smooth the first-order and second-order differential value of the electrocardiogram signal. Secondly, we precisely calculate the locations of QRS complexes in short time windows. Finally, we use MIT-BIH database to analyze the result of the improved algorithm. Results For the most ECG data in MIT-BIH database, the accuracy of the improved algorithm is more than 96% , and running time is about 1 millisecond. Conclusions The improved algorithm satisfies remote terminals＇ requirement for accuracy and running time.

关 键 词：QRS波 心电图 实时检测 嵌入式 

分 类 号：R318.6[医药卫生—生物医学工程]