二维码技术在选煤厂PLC集控系统中的应用

Application of two-dimensional code technology in PLC centralized control system of coal separation plant

针对传统的选煤厂设备人工巡检方式准确率和效率较低等问题,提出了一种基于二维码技术的选煤厂PLC集控系统设计方案,介绍了该系统的结构、控制流程及二维码技术在该系统中的应用方案。安检员登录二维码扫描仪上的巡检管理系统并下载巡检任务,然后扫描待检设备的二维码,通过PLC集控系统与数据库服务器进行数据通信。上位机将设备的运行数据发送到二维码扫描仪进行数据显示,完成设备巡检;同时,上位机进行巡检工作数据统计,完成对巡检人员的考勤。

In view of low correctness and efficiency of traditional manual device inspection mode of coal separation plant,a PLC centralized control system of coal separation plant was proposed which was based on two-dimensional code technology.Structure and control processing of the system were introduced as well as application scheme of two-dimensional code technology in the system.Inspectors login to inspection management system in two-dimensional code scanner and download inspection tasks,then scan twodimensional code on the inspected device.Upper computer sends running data of the device to the twodimensional code scanner for data display by data communication between the PLC centralized control system and database servers,so as to realize device inspection.Meanwhile,the upper computer counts inspection data to complete inspector attendance.