多路数据巡回监测系统的实现

Implementation of Multi-Data Circuit Monitoring System

多路数据巡回监测系统以VCMSComm控件控制串口,通过MAX+PlusⅡ使FPGA能识别串口指令并按指令采集模拟数据,达到以串口实现PC机与FPGA通信的目的。即先通过并／串转换电路将接收到的串行数据变成并行数据,后通过缓存模块读取并行数据,再以74LS195组成的串／并转换电路将其转换成串行数据帧返回计算机。而模拟数据采集及其A／D变换则通过ADCS09完成。

The serial port is controlled with VC MSComm for multi-data circuit monitoring System （MCMS）. The instructions of serial port are identified by FPGA through MAX＋Plus Ⅱ, and analog data is collected according to the instructions, and the communication between computer and FPGA is realized. Firstly, the received serial data was changed into parallel data by the parallel/serial converting circuit. Secondly, the parallel data was read with buffer module, and finally, the read parallel data was converted into serial data frame and returned to the computer through the serial/parallel converting circuit composed by 74LS195. The analog data acquisition and AID conversion was completed by ADC809.