摘要
目的:研制基于USB2.0的事件相关电位数据采集卡,为神经活动功能改变的评定提供依据。方法:以USB2.0芯片CY7C68013为核心,结合CPLD(ComplexPro-grammableLogicDevice,CPLD)和FIFO(FirstIn,FirstOut,FIFO),设计硬件系统及控制程序。结果:事件相关电位数据采集卡包括硬件设计和软件设计两部分。在硬件上包含多路开关、模数转换、FIFO模块、CPLD模块、USB模块;在软件上包含CPLD编程、USB固件、USB驱动以及应用程序。结论:该卡具有精度高、实时性好、可自由设置通道、单端和差分信号可同时采集、外部信号和采集数据同步等优点,完全能胜任事件相关电位数据采集。
AIM:To design the data collection card based on USB2.0 for event related potentials(ERP) and provide material to evaluate the change of neural activity. METHODS:The hardware system and control program were designed based on USB2.0 chip CY7C68013,which combined Complex Programmable Logic Device(CPLD) and First In, First Out(FIFO). RESULTS:The study included hardware and software design. There were analog multiplexers,A/D conversion(analog digital conversion), FIFO module,CPLD module in the hardware design and CPLD program,USB firmware, USB driver in the software design. CONCLUSION:The card possesses of some advantages:high precision, outstanding real time ability,free channels setting,single ended and differential signals collecting simultaneously,exterior signal and collecting data synchronization.So,the card is competent for the data collection of event related potentials.
出处
《中国临床康复》
CSCD
北大核心
2005年第5期42-44,共3页
Chinese Journal of Clinical Rehabilitation
基金
国家攀登计划(95-专-09)
中国博士后基金资助(2003034026)~~