一种心电信号采集放大电路的简单设计方法

Simple Method of ECS Acquisition Amplifier Design

心电信号属干扰较强的微弱生物医学信号,对其采集放大电路的要求往往较高。以AD620及OP07为核心,加上适当的反馈型噪声抑制单元,设计了一种简单的心电信号采集放大器,其电路功耗小、灵敏度高,通过后续进一步的信号数字调理,该电路容易实现基于移动式心电信号的采集放大。讨论并实验了全部的电路功能,并运用该电路采集到了符合要求的心电信号,是一种实用的心电信号前端采集放大电路。

Electrocardiosignal（ECS） is a kind of medical signal with strong noise and needs better amplifier to sampling it, by using IC AD620 and OP07,a simple ECS amplifier is designed,it also includes a noise control unit,experiments show it is sensitive to ECS,output amplitude is enough and low power is needed,this circuit can be used in the domain of moving ECS detecting system,all the function of circuit is tested and realized in the paper.