基于CPLD扩展单片机接口的多路数据采集系统

Data Sampling System of Multi-roads Based on CPLD Extend ing MCU Interface

介绍了基于 CPL D扩展 80 3 1单片机接口实现远程数据采集功能的系统。该系统采用双 CPU控制 ,下位机提供 8路数据采集 ,上位机控制下位机并进行数据处理 ,CPL D作为扩展接口实现数据显示、键盘输入、打印输出和系统报警等工作。通过单片机通讯的方式实现数据与控制指令的远距离传输。

This paper introduced data sampling system of mul ti roads based on CPLD extending MCU interface.Two CPU was used in system . the terminal CPU used for sampling data, the local CPU used for controlling t he termi nal CPU,disposing data and the CPLD as extending MCU interface used for displa ying information,inputting and printing data etc. By using the way, the data a nd instruction had been transmitted in the long distance.