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脑-机接口(BCI)系统是通过脑电(EEG)信号实现人和计算机等设备之间的交流和控制的系统。本文阐述了基于BCI技术的无线智能家居系统的工作原理,利用单片机、LED灯组成视觉刺激器诱发得到稳态视觉诱发电位(SSVEP),再利用在LabVIEW平台上的功率谱变换方法实时处理不同频率刺激下产生的EEG信号,将其转化为不同的指令,由无线射频设备收发控制命令,实现家居设备的实时智能控制。实验结果表明,10名受试者的正确率均达到100%,单个设备的平均控制时间为4s,实现了家居设备的智能控制。
The Brain-Computer Interface (BCI) system is a system that enables communication and control between devices such as humans and computers through EEG signals. This paper describes the working principle of wireless smart home system based on BCI technology. The visual stimulator composed of single chip microcomputer and LED lamp is used to evolve the steady-state visual evoked potential (SSVEP), and the power spectral conversion method on the LabVIEW platform is used to process different frequencies The EEG signals generated under stimulation are converted into different commands, and control commands are sent and received by the radio frequency devices to realize real-time intelligent control of home devices. The experimental results show that the correct rate of the 10 subjects is 100%, and the average control time of a single device is 4s, which realizes the intelligent control of home devices.