一种基于智能手机与脑-机接口技术的环境控制系统

西安科技大学 电气与控制工程学院,陕西 西安 710054

脑机-接口; 稳态视觉诱发电位; 智能手机; 蓝牙

An environmental control system based on smart mobile phone and brain computer interface technology
WANG Pai,LV Yuan-jie,WANG Mei

(College of Electrical and Control Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)

brain computer interface; steady state visual evoked potential; smart mobile phone; bluetooth

DOI: 10.13800/j.cnki.xakjdxxb.2015.0521

备注

为帮助重症患者实现与外部环境交流,基于稳态视觉诱发电位原理,将脑-机接口与智能手机相结合,开发一种利用脑电波进行环境控制的智能系统。本系统采用稳态视觉诱发电位技术设计脑-机接口,采用Android系统的智能手机作为控制终端,以FFT算法提取脑电波信号的频率特征,用于目标识别。采用蓝牙技术实现控制终端与被控对象之间无线通信。本系统可以实现:拨打电话、家电控制等功能。针对不同的系统功能进行3组试验,结果表明:本系统的识别准确率最高可达100%,最差准确率达:72.4%.与传统的BCI系统相比,本系统具有可穿戴、移动性好、识别率高等特点。

To help critically ill patients communicate with outside environment,we combine the brain-computer interface with smart phone based on the theory of steady state visual evoked potential(SSVEP)to develop an intelligent system which controls the environment by using the electroencephalograph(EEG).This system uses the steady-state visual evoked potential technology to design a brain computer interface,and takes the intelligent android mobile phone as the control terminal.It applies FFT algorithm to extract the frequency characteristic of EEG signals for target recognition,and realizes wireless communication between the control terminal and controlled object by using Bluetooth technology.By using the intelligent system,patients may make a telephone call and control household appliances and so on.We design three groups of test according to the different function of the system The experimental results show that the system has the highest accuracy of 100% in recognition,and the lowest accuracy of 72.4%.Compared with the traditional BCI system,this system has the characteristics of wearable,mobile,and higher recognition rate.