北京生物医学工程

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：赵冲杨恋何爱军张广法

单位：                      南京大学电子科学与工程学院（南京210046）        

关键词： QRS波; 心电图; 实时检测; MIT-BIH; 嵌入式

分类号：

出版年·卷·期（页码）：2014·33·4（403-407）

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1ms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.

参考文献：

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