【摘要】 随着现代电子技术的发展,对数据采集系统的要求也越来越高。文章对采用典型的数据采集系统构成进行研究后提出基于CPLD和单片机的高速数据采集系统的方案,该方案将来自高速A/D转换器的采样数据直接写入RAM中,计数器及采样脉冲产生等核心逻辑功能与A/D转换器工作方式的选择用CPLD实现,单片机则实现控制数据通信接口。通过系统测试表明该方案在对200 kHz以下的信号采集时,能够取得较好的效果。更多还原

【Abstract】 With the development of modern electronic techniques,the demands to data acquisition systems keep rising.This paper studies the structure of the typical data acquisition system and puts forward high speed data acquisition system solutions based on CPLD and MCU.The scheme writes sampling data from high speed A/D converter into RAM directly.The core logic functions of the counter and the sampling pulse generation,and the choice of the working ways of A/D converter are achieved by using CPLD.The microcontroller is adopted to control data communication interface.The system test shows that this scheme can get better effect when signals acquired are below 200 kHz in frequency.更多还原