心音、脉搏信号采集、调理电路的设计  

Design of Circuit for Collecting and Conditioning the Heart Sound and Pulse Signals

作　　者：童英华[1] 陈学煌[1] 冯忠岭[1] 

机构地区：[1]青海师范大学计算机系,青海西宁810008

出　　处：《现代电子技术》2011年第8期193-196,共4页Modern Electronics Technique

摘　　要：心音、脉搏是人体生理及病理的两项重要指标,针对这些信号一般比较微弱、且采集过程中也容易受外界干扰等特点,设计开发了一种能提取微弱心音、脉搏信号的电路。该电路采用驻极体话筒和红外光电法提取心音和脉搏信号,并采取了一系列放大、滤波措施,滤除噪声干扰。该电路较好地解决了外界干扰问题,具有采集数据准确可靠,噪声小,成本低等优点。Heart sound and pulse are the most important indexes of the human physiology and pathology.As the heart sound and pulse signals are always weak and can be easily disturbed by outside noise when collection,a circuit which can extract the weak heart sound and pulse signals are developed according to these characteristics.The electret condenser microphone and infrared photo-electrical technique are adopted in the circuit to extract the weak heart sound and pulse signals.It also takes a series of amplifying and filtering measures to eliminate the interference of noise.This circuit solves the outside interference problem in a better way and possesses the advantages of accurate and reliable data collection,low noise,and low cost.

关 键 词：心音 脉搏 传感器 调理电路 

分 类 号：TN911-34[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]