基于USB2.0的脑电信号采集系统设计

提出了脑电信号采集系统的硬件与软件设计框架,设计了脑电数据的提取、过滤、去除干扰、三级放大、A/D转换及USB接口等电路.使用KeilC51、Visual C++以及Windows2000DDK编程工具开发了USB固件程序、设备驱动程序.该系统实现了脑电数据的准确采集、高速传输和实时处理,解决了传统脑电数据采集系统方案的缺陷.设计符合下一代数据采集技术的发展方向,满足实际需要.

Design of EEG signal acquisition system based on USB2.0

The hardware and software design frameworks of EEG signal acquisition system are proposed,and the design of the EEG data extraction,filtering,interference removing,three-stage amplification,A/D conversion and USB interface circuits in the system is finished.The USB firmware program and the device driver programs are developed using Keil C51,Visual C++,as well as Windows 2000 DDK.This system realizes the accurate acquisition,high-speed transmission and real-time processing of EEG data,and it overcomes the shortcomings of the traditional EEG data acquisition system.The design of the system accords with the development trend of new data acquisition systems.