便携式心电仪信号采集电路的设计研究  

Signal Acquisition Circuit in Portable ECG Monitor

作　　者：唐云[1] 李艳芳[1] 李荣[1] 

机构地区：[1]湖南科技学院电子研究所,湖南永州425199

出　　处：《湖南城市学院学报（自然科学版）》2016年第3期59-61,共3页Journal of Hunan City University:Natural Science

基　　金："湖南科技学院重点学科建设项目资助(电路与系统)";"永州市2014年度第一批指导性科技计划项目(序号10)";"2013年湖南科技学院科学研究项目(13XKYTB007)"阶段性成果

摘　　要：便携式心电仪具有功耗低、稳定性高、使用方便等优点,使用越来越广泛。便携式心电仪中信号采集电路系统由探测电极、前置放大电路、带通滤波电路、50Hz馅波电路、主放大电路以及电平抬升电路等部分组成,其输出信号经模数转换后可进行显示和处理。为提高心电仪的工作稳定性、降低功耗,选用了低功耗、低电压的仪表放大器AD620,为消除50Hz工频干扰,采用了专门设计的50Hz馅波电路,确保心电信号的有效传输。采用Multisim软件对各部分电路进行了仿真,确保设计电路能达到预期目的。Portable ECG device used more and more widely with its low power consumption, high stability, easy to use. A portable ECG signal acquisition circuit system include detecting electrodes, preamplifier circuit, band-pass filter circuit, 50 Hz filling wave circuit, main amplifier and voltage lifting circuit. After the output analog signal conversion to digital signal can display and process by MPU. We choose the low power consumption, low voltage amplifier AD620 for improving the stability, reducing the power consumption of ECG, in order to eliminate 50 Hz interference, we using the 50 Hz filling wave circuit that is specially designed to ensure the effective transmission of ECG signal. Multisim software is used to simulate every part of the circuit, to ensure that the design of the circuit can reach the expected goal.

关 键 词：心电仪 信号采集 仪表放大器 馅波电路 Multism仿真 

分 类 号：R540[医药卫生—心血管疾病]