【摘要】 介绍一种用阻执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议中，取得了较满意的效果。更多还原

【Abstract】 A RESP signal detecting circuit with impedance method is introduced. In this circuit, a four electrode arrangement is used. which can reduce movcment artifact in using two electrodes, In signal processing. a series of methods such as filtering and amplifing are used to overcome the heart beat and bloodflow sigals. The circuit has successfully been applied in the blocking physiological parameters moniter that we have developed.更多还原