P300脑机接口控制智能小车系统的设计与实现

Design and Implementation of Controlling Smart Car Systems Using P300 Brain-computer Interface

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。

Using human electroencephalogram（EEG） to control external devices in order to achieve a variety of func- tions has been focus of the field of brain-computer interface （BCI） research. P300 is experiments which stimulate the eye to produce EEG by using letters flashing, and then identify the corresponding letters. In this paper, some im- provements based on the P300 experiments were made？？. Firstly, the matrix of flashing letters were modified into words which represent a certain sense. Secondly, the BCI2000 procedures were added with the corresponding source code. Thirdly, the smart car systems were designed using the radiofrequency signal. Finally it was realized that the evoked potentials were used to control the state of the smart car.