基于嵌入式系统的诱发脑电信号采集仪器设计

A Design of BCI Evoke Equipment Based on Embedded System

在建立了一个脑电信号源模型的基础上,仔细分析了脑电信号放大器的干扰与噪声,提出了抑制干扰与噪声的一系列措施.然后根据脑电信号的特点着重讨论了前置放大器的设计,介绍了整个脑电信号采集系统的组成,以及软件设计方面的任务分析、数字滤波器和关键的数据结构,最后讲解了诱发事件与诱发脑电信号的同步关系和数据的封装.

Based on the surveying, proceeding, analyzing research of electric signals of cerebral cortex, we present an application of embedded computer system that is based on ARM and μ C/os- Ⅱ real time operation system in Brain computer interface （BCI） communication. It gives out the design of high performance amplifier and the realization of software in this embedded computer system. We also talk about some disturb sources, and the way to decrease them.