基于P300的便携式中文输入系统  

Portable Chinese input system based on P300

作　　者：黄国阳 何军 毛剑波[1] HUANG Guo-yang;HE Jun;MAO Jian-bo(School of Electronic Science and Applied Physics,Hefei University of Technology,Hefei 230601,China)

机构地区：[1]合肥工业大学电子科学与应用物理学院,合肥230601

出　　处：《信息技术》2021年第2期56-61,共6页Information Technology

基　　金：合肥工业大学省级大学生创新项目(S201910359258,2018CXCYS211)。

摘　　要：目前有关中文BCI输入系统的研究仅有拼音输入和笔画输入两种,且都克服不了中文输入速率较低、不便携等问题。据此提出了基于P300的五笔中文输入系统。此系统通过低成本OpenBCI套件,使用Wi-Fi协议传输脑电数据,在移动设备上实现刺激界面,并使用卷积神经网络处理脑电信号。实验表明,该系统具有高中文输入速率、高准确率以及便携化等特点。Currently there has been merely two types of input methods used in the proposed Chinese-based BCI input system:Pinyin input and stroke input.Furthermore,both of them cannot overcome the problems such as low Chinese input rate and being unportable.To solve the problems,a Wubi Chinese input system is proposed on the basis of P300.This system use the low-cost OpenBCI suite,use the Wi-Fi protocol to transmit computer data,the stimulation interface is realized on mobile devices,and Convolutional Neural Network is used to process EEG signal.The experimental results show that the system has the characteristics of high Chinese input rate,high accuracy and portability.

关 键 词：脑机接口 脑电信号 P300电位 OpenBCI 嵌入式系统 

分 类 号：TP335[自动化与计算机技术—计算机系统结构] R318.04[自动化与计算机技术—计算机科学与技术]