Pulse of the physiological signal sensing circuit in the realization and its signal acquisition reconstruction system design

The main purpose of this paper is to develop a lightweight portable pulse of the physiological signal sensing circuit, and through acquisition and reconstruction of the pulse signals will be presented on a personal computer, so the content is divided into hardware production and signal processing. The hardware realization of the system, we will be divided into three blocks, namely with conductive polymer as a material of the sensor used to measure physiological signals of weak pulse, then for the amplifier circuit, filter and Schmitt trigger circuit is used to enlarge the pulse of weak physiological signals, filtering noise, and convert a continuous signal into pulse signals, finally there is the beating pulse of abnormal warning circuit. In signal processing, we are through DAQ card and signal capture device and LabVIEW platform, the pulse signal waveform reconstruction. This study can be applied to future wireless transmission and personal physical build the database to achieve the goal of long-distance medical treatment and care.