中文摘要：

设计了一种能采集人体微弱心电信号的检测系统，此系统使用前端电路实现对心电信号的采集，通过滤波、陷波电路过滤掉人体及器件产生的干扰信号，后级放大及电平抬高电路为模拟信号进行模数转换做准备，最后使用MPS430单片机进行A／D转换，从而实现心率的读取。测试结果表明，此系统达到了良好的检测效果。

英文摘要：

In this paper, a measurement system for weak clcctrocardiograph（ECG）signal is proposed.The system employs an analog front-end for ECG signal acquisition, which integrates bandpass and notch filters to remove interference signal from human body and environment.A second amplifier stage provides gain and level shifting to signal for analog-m-digital（A/D） conversion.FinaLly the A/D conversion is realized by MPS430 micro-controller, which completes the ECG signal measurement_Experiment results show that the system achieves good measuring performance.