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PLC在EMIS车站信号微机联锁控制系统中的应用
引用本文:王思明,张金敏. PLC在EMIS车站信号微机联锁控制系统中的应用[J]. 电气传动自动化, 1998, 20(3): 53-56
作者姓名:王思明  张金敏
作者单位:兰州铁道学院!730070
摘    要:EMIS车站信号微机联锁控制系统、采用PLC作为下位联锁系统。本文说明了PLC在系统中所起的作用,并介绍了PLC系统的软、硬件结构,阐明PLC与上位联锁系统的通信及解决通信死锁的方法,并对系统的故障-安全性、可靠性进行了探讨。

关 键 词:可编程控制器(PLC)  通讯  微机联锁  故障—安全  可靠性

The Application of PLC in EMIS Microcomputer Railway Signal Interlocking System
Wang Siming Zhang Jinmin. The Application of PLC in EMIS Microcomputer Railway Signal Interlocking System[J]. Electrical Drive Automation, 1998, 20(3): 53-56
Authors:Wang Siming Zhang Jinmin
Affiliation:Lanzhou Railway Institute
Abstract:EMIS microcomputer railway signal in terlocking system uses Siemens programmable toiler as it's lower - level interlocking system . The function of the lower - level interlocking system and the hardware and software structure of the system are described in the paper . The designing method of the communication program between the upper - level interlocking system and lower - level interlocking PLC is presented , and the technique used for solving the dead locks in the communication is discussed in detail . The overall architechture of PLC system aiming at a high degree of safety, reliability is shown .
Keywords:programmable logical controller(PLC) communication microcomputer interlocking failsafe reliability
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