一种新型心电信号采集及分析系统

A New Sampling and Analytic System for ECG Signal

本文内容主要包括应用单片机构成的心电信号的采集系统和心电图 QRS波检测及心率测定、分析系统。硬件设计采用胸部双导联输入 ,用 89C5 1作为处理器 ,包括模拟和数字两部分。软件设计采用差分阈值算法来检测 QRS波并测得心率 ,该算法以斜率和幅度为基础。

The design mainly includes two parts: hardware design and software design. The hardware design includes an analog circuit and a digita l one, adopts two electrodes on the chest and uses single chip micsooco (SCM) 89 C51 as main processor to acquire the electrocardiogram (ECG) signal. The softwar e design detects QRS wave, which is based on differential value of ECG signals a nd the threshold of amplitude and slope. We succeed to sample the ECG signal dat a and to draw the ECG. At the same time we detect the heart rate.