基于MODBUS协议的速度传感器检测系统设计与开发

摘要

After the analysis of current status for the speed sensor detection system and using industrial control computer, V20 frequency converter, AC motor and other equipment, the frequency conversion speed regulation module of test system is established. This module can simulate the running conditions of metro vehicles. Through using VC++ technology, Microsoft Communication Control and preparation of communication messages, the sys-tem can make industrial PC achieve the real-time regulation of AC motor speed. The performance of speed sen-sor can be detected at different speeds. The actual application shows that this system is stable with low failure rate and high detection accuracy, which can meet the actual demand of metro vehicles.%分析目前速度传感器检测系统的现状,利用工控机、V20变频器、交流电机等设备,依照MODBUS协议搭建检测系统变频调速模块,模拟地铁车辆运行工况;通过VC++技术、Microsoft Communication Control通信控件以及通信报文的编写,实现工控机对交流电机的实时调速,使得系统可在不同速度区段下检测速度传感器性能.经实际使用表明,该系统运行稳定、故障率低、检测精度高,满足地铁使用需求.