交通指示灯控制系统 毕业论文

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1、目录摘要····························································2第一章绪论························································4第二章PLC的特点及应用············································61.1概述···························································61.2PLC的特点·······························

2、······················61.3PLC的应用·····················································8第三章PLC的结构及原理············································152.1PLC的分类·····················································92.2PLC的结构·····················································92.3PLC25的工作原理······

3、···········································92.4PLC汇编语言··················································112.5PLC的基本指令················································152.6PLC交通灯毕业论文编程器件····································15第四章梯形图的设计与编程方法·····································193.1控制要求·······

4、··············································173.2控制时序·····················································173.3PLC交通灯毕业论文硬件及外围元器件····························19第五章程序设计···················································254.1梯形图·······················································234.2交通

5、灯指令图·················································23254.3软件设计·····················································25谢辞···························································25参考文献···························································26交通灯控制系统摘要:针对近年来城市交通的拥挤现象,特别是驾驶员违章严重、交通事故频发

6、、车辆尾气污染等问题,介绍丁集计算机、信息、电子及通讯等众多高新技术手段于一体的智能交通指挥中心控制系统.该系统的安装及使用,大大缓解了城市道路堵塞现象、提高了道路的通行能力.减少了驾驶员违章的次数,抑制了交通事故的发生,同时对减轻车辆尾气排放,从而降低环境污染都起到了不可低估的作用.分析了现代城市交通控制与管理问题的现状，结合城乡交通的实际情况阐述了交通灯控制系统的工作原理，给出了一种简单实用的城市交通灯控制系统的硬件电路设计方案。关键词　plc控制系统交通灯自动化Trafficcontrolsystem25Abstract：Forurbantrafficcongest

7、ioninrecentyears,especiallythedriverviolationserious,frequenttrafficaccidents,vehicleexhaustpollutionandotherissues,describesthesmallsetofcomputer,information,andmanyotherhigh-techelectronicsandcommunicationsmeansinoneoftheIntelligentTrafficControlCommandCenterSyste