基于声卡的心电信号R波检测用于心率变异性分析的实验研究  

Experimental Research on Heart Rate Variability Analysis with Application of Acquisition System of R Peak of Electrocardiosignal Based on Sound Card

作　　者：周芳[1] 贾晓宁[2] 申岱[2] 周鹏[3] 

机构地区：[1]天津医科大学眼科医院,天津300384 [2]天津医科大学口腔医院,天津300070 [3]天津大学精密仪器与光电子工程学院,天津300072

出　　处：《生物医学工程学杂志》2013年第4期737-742,共6页Journal of Biomedical Engineering

摘　　要：本研究采用普通声卡代替心电(ECG)信号专用数据采集卡,设计了一种音频信号采集系统,实现了实时检测R波用于心率变异性(HRV)分析。经实验论证,声卡采集低频ECG信号中的R波具有可行性。与PowerLab信号采集系统的实验对照研究表明,基于声卡的ECG信号R波检测系统可以准确检测到ECG信号R波,R波波峰位置与PowerLab信号采集系统的R波波峰位置完全重合,RR间期无差异,所得RR间期用于HRV分析准确可靠。这种低成本、高性能、兼容性强、升级方便的ECG信号R波检测系统与传统的采集方法相比具有一定优势,因此可具有广阔的应用前景。This study designed an audio signal acquisition system to achieve real-time detection of R peak for heart rate variability （HRV） analysis, substituting ECG-specific data acquisition board with sound card. It is proved that the R peak with low frequency can be gathered by sound card. The comparison with PowerLab signal acquisition system has shown that the acquisition system of R peak could accurately detect the R peak. The R peak detected by sound card and PowerLab signal acquisition system completely overlap each other, while RR intervals has no difference. The HRV analysis was accurate and reliable with the RR interval from sound card. This low cost, high performance, strong compatibility and easy upgraded acquisition system of R peak compared with the traditional data acquisition board has the value of practical uses and might have broad applications in the future.

关 键 词：声卡 实时检测 心电信号R波 心率变异性 

分 类 号：TN911.23[电子电信—通信与信息系统] R319[电子电信—信息与通信工程]