Recent research shows that pulse signal monitor can be used to evaluate sleep quality. It can judge whether the person falls in sleep though testing sleeper' s pulse change. The design of a pulse signal monitoring system , including signal amplification, baseline calibration, band-pass filter, plastic circuit and analog-digital conversion circuit etc. Average pulse and instantaneous pulse is displayed on LCD, it can be used as a portable electronic pulse meter. System communications through MCU serial interface and PC USB ports. The pulse signal is sent into the computer storage and processing, realize the waveform reduction, pulse monitoring.%研究表明睡眠中的脉搏监测可以用来对睡眠质量进行评估分析,而且可以通过测量睡眠者的脉搏变化,判断是否进入有效睡眠状态.设计了一个面向睡眠分析的脉搏监测系统,主要包括放大电路、基线校正电路、滤波电路、整形电路和A/D转换电路等.在LCD上显示测量的平均脉搏和瞬时脉搏,可以作为一个便携式电子脉搏计.同时通过C52的串行通信接口和上位机的USB接口通信,把脉搏信号送入计算机存储和处理,实现波形还原,脉搏监测.
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