成庄矿选煤厂重介质密度监控系统的改造实践

摘要

In view of the problem that existing monitoring and control system of heavy-media coal separation cannot reflect real-time information to field operating personnel real-timely in Chengzhuang Coal Preparation Plant, the paper proposed a reforming scheme with S7-300 PLC, SIMATIC WinCC and VB6.0 for current minotoring and control system.It introduced communication process of WinCC with VB6.0 and S7-300 PLC.The reformed system achieves a dynamic display of data and monitoring of main parameters through putting a piece of LED display screen in heavy-media coal separation workship, which makes operators on duty finish density control according to real-time data on LED display screen, and all coal separation workshops share information by OPC interface of WinCC, so as to realize centralized control and manage.Besides, cost of the system reform is low by using simple external program to collect and display data.%针对成庄矿选煤厂现有重介选煤监控系统存在不能将实时信息及时向现场操作人员反映的问题,提出一种采用S7-300 PLC、SIMATIC WinCC及VB6.0软硬件平台对现有监控系统进行改造的方案,介绍了WinCC与VB6.0及S7-300 PLC的通信过程.改造后的系统将LED显示屏放置在重介选煤车间,实现了数据的动态显示和主要参数的监控,值班人员可以在显示屏实时数据的指导下完成密度调控;通过WinCC提供的OPC接口,各选煤车间可以实现信息共享,从而方便了全厂的集中控制、管理;系统通过调用简单的外部程序就可采集和显示数据,改造成本低廉.