可编程逻辑控制器在隧道列车预警系统中的应用  

Application of PLC to Train Early Warning System in tunnel

作　　者：李志强[1] 李国宁[1] 

机构地区：[1]兰州交通大学信息与电气工程学院,兰州730070

出　　处：《铁路计算机应用》2006年第7期43-45,共3页Railway Computer Application

摘　　要：随着列车速度的提高,在隧道中列车经过的时间越来越短。为了使维护和检修工作时更加安全,在列车通过隧道时应有预警系统。介绍基于SIMATICS7-200在隧道列车预警系统中的主要硬件配置、工作原理和软件编程,并给出程序流程图。系统实现了对经过列车的提前检测并给出报警。该系统控制效果良好,操作简单,维护方便,可靠性高,具有较好的实用价值。With the enhancement of train＇s speed, the time of trains passing the tunnel was more and more short. In order to enhance the maintenance and the overhaul work＇s safety, the Early Warning System was necessary when trains passed the tunnel. The System was introduced based on SIMATICS7-200, included hardware disposition, working principle, software programming. It was produced the procedure block diagram. The System was implemented examination and alarming before passing the trains. The System had good practical value. It had the property of good controlling effect, easy to operate, convenient to maintain, high reliability and so on.

关 键 词：可编程逻辑控制器 列车 检测 隧道列车预警系统 

分 类 号：U284.14[交通运输工程—交通信息工程及控制] TP391.8[交通运输工程—道路与铁道工程]