【毕业论文】PLC控制火车进出站系统--火车进出站信号控制与优化.doc

密级： 铁路系统 火车进出站信号控制与优化 train station lights control and optimization 学 院：信息科学与工程学院 专 业 班 级：通信工程0703班 学 号：070404066 学 生 姓 名：程 峰 指 导 教 师：李 晖 （副教授） 2011年 06 月 摘 要 铁道信号也称为铁路信号，铁道信号的作用是保证列车运行安全，有效提高铁路运输效率，降低运输成本，大大改善行车人员的劳动条件信号是指挥火车的命令，也是告诫人们安全的警语。保证铁路行车安全。PLC实现对火车进出站的信号灯和轨道控制。预想一个时间段，有数列火车通过一个铁路的中转站，有5条轨道，期间有各列火车途径此站时，完成通过，停留，变轨等作业任务，在信号灯与控制台的统一操作下，各列火车完成有条不紊的进行安全作业。设计包括使用PLC STEP7编程软件编写控制程序，系统硬件的组态以及整个系统使用PLCSIM软件的仿真过程。设计着重研究这么几个方面： （1）深入学习PLC的梯形图编程方法； （2）进路，道岔和信号与PLC之间的连锁； （3）信号灯在火车进出站实施各种作业时，色灯变化控制； （4）系统硬件整体功能的调试和优化。 通过系统的研究和设计火车进出站信号的控制与优化，将会使得行车信息服务于大众成为可能，随着铁路信号技术的发展和铁路信号的广泛应用，铁路信号也成为提高铁路区间和车站通过能力、增加铁路运输经济效益、改善铁路员工劳动条件的一种现代化科学管理手段和技术[9] Abstract Railway signals, also known as railway signaling, railway signal role is to ensure safety of train operation, improve the efficiency of rail transport to reduce transport costs, greatly improve the traffic officers working conditions. Meanwhile, the command signal is a train conductor, but also warned that security warnings. With the development, social progress, scientific and technological level of continuous improvement and application of the classification of railway signal and more precise. Envision a time period, a number of trains through a railway station on 5 tracks, there will be the way to the train station, completed by, stay, orbit and other job tasks, operation of lights and under the unified console each train to complete an orderly conduct of security operations. Design including the use of PLC STEP7 programming software development control procedures, system hardware configuration and the entire system uses PLCSIM software in the simulation process. Design focuses on such aspects: (1) Depth study of PLC ladder programming method; (2)Approach, switches and signal chain between the PLC; (3)Lights on the train and out points to a variety of operations, the color light change control; (4)The overall function of the system hardware debugging and optimization. Through systematic st