新型脑电信号放大检测电路的设计  

Design of novel amplifying and detecting circuit of EEG

作　　者：孙友明[1] 黄秉鍊[1] 罗晓曙[1] 

机构地区：[1]广西师范大学物理与电子工程学院,广西桂林541004

出　　处：《国外电子元器件》2006年第9期58-62,共5页International Electronic Elements

基　　金：广西壮族自治区教育厅科研项目(桂科教研[2004]20号)

摘　　要：通过对前置放大器等电路结构的精心设计,选用超低噪声的集成运算放大器以及线性光耦合器等新器件,克服了脑电信号采集中常遇到的一些困难,使前置放大器具有较高的共模抑制比,从而能够较好地放大检测出的脑电信号。通过Pspice仿真软件,有助于电路的设计和调试。By designing aboratively the circuit structure of preamplifier and selecting new elements such as ultra low noise operational amplifier and linear opto-coupler, some difficulties in EEG acquisition were overcome and the CMRR of preamplifier was increased highly.So EEG can be amplified and detected well. And simulation software-Pspice helps to design circuit and debug.

关 键 词：脑电信号 前置放大器 线性光耦 共模抑制比 抗干扰 

分 类 号：TN722[电子电信—电路与系统]