阻抗法检测呼吸信号的电路设计  

The design of a circuit for detecting RESP singal using impedance method

作　　者：戚建新[1] 郭群恩[1] 董苑[1] 

机构地区：[1]第四军医大学西京医院,西安市710032

出　　处：《医疗卫生装备》1998年第3期4-6,共3页Chinese Medical Equipment Journal

摘　　要：介绍一种用阻抗法检测呼吸信号的硬件电路。该电路采用四电极法检测呼吸波，克服了二电极法检测所带来的信号不稳定、易受干扰等问题。在信号处理上，使用多重滤波与放大，克服了心动、血流等信号的干扰。该电路已成功地应用于我们研制的模块化生命参数监护仪中，取得了较满意的效果。A RESP signal detecting circuit using impedance method is introduced. In this circuit,a four electrode arrangement is used,which can reduce movement artifact in us-ing two electrodes. For signal processing,a series of methods such as filtering wave and ampliying are used to overcome the disturbance of the heart beat and bloodflow sigals.The circuit has successfully been applied in the blocking physiological parameters moniter that we have developed.

关 键 词：阻抗 呼吸信号测量 电路设计 

分 类 号：TH776.1[机械工程—仪器科学与技术]