基于SOPC的脑电信号实时处理

为满足脑电信号采集、处理设备具有便携式,实时性,数据量大的实际需求,提出了一种基于SOPC的脑电信号实时处理设计方案。用脑电极采集到的脑电信号经过前期预处理(放大,滤波)、A/D模数转换后,经过SOPC系统对脑电信号进行频谱分析、特征提取,最后存储或传输。整个设计围绕SOPC系统,以NiosⅡCPU为核心,并与其他外围设备集成,实现整个系统的控制与处理能力。利用SOPC系统实现的脑电信号采集系统,具有体积小、运算速度快、方案灵活的特点,为构建脑电信号实时处理系统提供了一个新技术方案。

Based on SOPC EEG real-time processing

To meet the brain signal acquisition,processing equipment with a portable,real-time,the actual needs of large volumes of data,this paper presents an EEG-based real-time processing SOPC design.With brain electrode EEG collected after a pre-pre-treatment(amplification,filtering),A/D analog-digital conversion,after SOPC system for EEG spectral analysis,feature extraction,the final storage or transmission.SOPC design around the entire system to Nios Ⅱ CPU core,and integration with other peripheral devices,to achieve the overall system control and processing capabilities.SOPC system implementation using EEG acquisition system,with a small,fast speed,flexible features of the program for building real-time EEG processing system provides a new technical solution.