利用PLC控制交通信号灯.doc

郑州轻院民族职业学院 专科毕业设计 题 目 利用PLC控制交通信号灯 学生姓名 专业班级 电气自动化技术（ 班 学 号 院 （系） 电子信息技术系 指导教师(职称) （助讲） 完成时间 2009 年 05月 11日  目 录 摘要·································································Ⅰ Abstract···························································Ⅱ 1 应用背景与需求·················································1 2 控制任务分析····················································4 2.1 方案研究························································4 2.2 控制要求························································5 2.3 控制任务分析···················································5 2.4 流程图···························································6 2.5 十字路口交通灯模拟控制时序表及时序图···················6 3 PLC选型及输入输出地址定义································7 3.1 可编程控制器选型··············································7 3.2 输入输出定义···················································8 3.3 输入输出接线图················································9 4 程序设计··························································10 4.1简略梯形图···············································10 4.2 程序梯形图·····················································11 4.3 语句表··························································12 5 系统安装与调试·················································13 5.1 程序输入·····················································13 5.2 系统安装·····················································15 5.2.1元件表·····················································15 5.2.2安装接线···················································16 5.2.3 将程序写入PLC·············································17 5.3 系统调试······················································17 总结·································································18 致谢·································································19 参考文献···························································20  利用PLC控制交通信号灯 摘 要 城市交通控制系统是用于城市交通数据监测、交通信号灯控制与交通疏导的计算机综合管理系统，它是现代城市交通监控指挥系统中最重要的组