A scheme for cardiotach measurement based on AD620 is proposed in this letter and the circuit design for each part of the scheme, including sensing terminal, signal acquirement, filter and amplification and microprocessor, is introduced.

• 摘要本文首先给出了一种基于AD620芯片心跳速率检测的方案，介绍了组成系统的传感头、信号提取、滤波放大及微处理器等各个部分的电路设计。