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利用人的脑电(EEG)信号来控制外部设备以实现各种功能一直是脑机接口(BCI)领域所致力于研究的热点。P300实验是一个利用字母闪烁来刺激眼睛以产生相应的EEG信号,进而识别出相应的字母的实验。本文在P300实验的基础上进行了一些改进。首先把闪烁的字母矩阵改成了代表一定意义的文字;其次对BCI2000内部程序源代码做了相应的添加;再次,设计了一个可以无线射频收发信号的履带小车系统。最后实现了使诱发EEG能够控制智能小车行进状态的目的。
The use of EEG signals to control external devices for various functions has always been a hot topic in the field of Brain Machine Interface (BCI). The P300 experiment is an experiment that uses a blinking of a letter to stimulate the eye to produce a corresponding EEG signal that identifies the corresponding letter. This article has made some improvements on the basis of P300 experiment. First of all, the blinking letter matrix was changed to represent a certain meaning of the text; followed by the BCI2000 internal program source code to do a corresponding addition; again, designed a radio RF transceiver track car system. Finally, the purpose of inducing EEG to control the traveling state of the smart car is achieved.