基于CC2431的便携式动物脑电采集系统设计  

A Portable Electroencephalogram Acquisition System for Animals Based on CC2431

作　　者：巫洋[1] 张典[1] 赵彤[1] 

机构地区：[1]青岛科技大学自动化与电子工程学院,山东青岛266042

出　　处：《科技视界》2015年第17期26-27,共2页Science & Technology Vision

基　　金：山东省自然科学基金(ZR2014PF004)

摘　　要：本文给出了基于无线单片机CC2431的脑电信号采集系统。该系统主要包括:(1)无线采集器和接收器(CC2431实现);(2)滤波器组,主要包括:前置放大器,带通滤波器和50Hz陷波器;(3)电源管理;(4)脑电信号显示界面(Delphi实现)。记录电极采集的脑电信号经过放大、滤波后调制发射,接收器接收到无线信号后解调并打印输出脑电信号。将该系统应用于大鼠脑电采集实验,实验结果表明该系统具有精度高、体积小、功耗低等特点,适用于类似大鼠的小动物脑电信号采集。A portable wireless electroencephalogram （EEG） recording system is presented based on wireless microcontroller CC2431. The system basically consists of （1） wireless transmitter and receiver （designed by CC2431）,（2） filter bank that consists of pre-amp, band pass filter and 50Hz trapper,（3） power management,（4） display interface for biological signals （realized by Delphi）. EEG signals collected by recording electrode is modulated and emitted after being amplified and filtered. And then the receiver demodulates wireless singles and displays the voltage values through computer serial port. In experiments the system is carried by rat for EEG acquisition. Experiment results show that the system is suitable for small animals EEG acquisition as rats with good features of high precision, small size and low power consumption.

关 键 词：ZIGBEE 脑电信号 滤波器组 脑机接口 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]