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.
出处
《医疗卫生装备》
CAS
1998年第3期4-6,共3页
Chinese Medical Equipment Journal
关键词
阻抗
呼吸信号测量
电路设计
impedance
RESP signal
disturbance
filtering wave
