基于CVI与Matlab相结合的BCI在线应用系统

结合CVI与Matlab,设计了一个脑机接口在线应用控制系统。首先,在CVI中通过TCP/IP实时接收脑电信号,通过触发回调函数对接收到的数据进行实时更新;其次,通过软件接口启用Matlab,将更新后的数据送入Matlab,在Matlab中对数据进行预处理、特征提取及分类;最后,在CⅥ中通过软件接口获取Matlab中识别出的类别号,并实现对虚拟车在线实时控制。系统采用多线程技术,充分发挥了软件优势互补的特点,可推动BCI的在线应用。

Online BCI Application System Based on Labwindows/CVI and Matlab

A BCI (brain computer interface) control system for online application is designed by combining CVI and Matlab.Firstly,the EEG (electroencephalogram) is received in real time through TCP/IP in CVI.Then the received data is updated in real time through triggering the callback function.Secondly,the Matlab is enabled through software interface.Then the updated EEG data is sent to Matlab,which is processed including preprocessing,feature extraction and classification.Finally,the classification label obtained from Matlab is sent to CVI software through software interface.The classification label is transfered to a specific command and the online real-time control of the virtual car is realized.The system uses the multithreading technology and takes full advantages for the complementary characteristic of different softwares,so it can promote the online application of BCI.