1、 毕 业毕 业 设 计设 计 院系名称院系名称 2013 年年 4 月月 25 日日 设计题目设计题目 交通灯控制系统交通灯控制系统 学生姓名学生姓名 学学 号号 专业班级专业班级 机械电子机械电子 指导教师指导教师 摘要摘要 随着社会经济的发展,城市交通问题越来越引起人们的关注。人,车,路三者关 系的协调,已成为交通管理部门需要解决的重要问题之一。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中最重要的组成部分。 随着城市机动车辆的不断增加,许多大城市如北京,上海,南京等出现了交通超 负荷运行的情况,因此自 80 年代后期,
2、这些城市纷纷修建城市高速公路,在高速公 路建设完成的初期,它们也曾有效的改善了交通状况。然而,随着交通量的快速增 长和缺乏对高速道路在构造上的特点,也决定了城市高速道路的交通状况必然受高 速道路和普通道路耦合出交通状况的制约。所以,如何采用合适的控制方法,最大 限度利用和耗费巨资修建的城市高速道路,缓解主干道与匝道,城区与周边地区的 交通拥堵状况,越来越成为交通运输管理和城市规划部门烝待解决的主要问题, 关键词:PLC 可编程控制器 交通信号灯 可靠性高 ABSTRACT With the development of social economy, the urban transportat
3、ion problem more and more aroused peoples concern. People, vehicles, road three relations coordination, has become a traffic management department needs to solve one of the important problems. Urban traffic control system is used in city traffic data monitoring, traffic signal control and traffic pe
4、rsuation computer integrated management system, it is the modern urban traffic control command is the most important part of. With the increasing of urban motor vehicle, many big cities such as Beijing, Shanghai, nanjing, etc. The traffic overload operation, since the late 80 s, therefore, these cit
5、ies have built urban expressway, at the beginning of the construction of highway, they have effectively improved the traffic conditions. However, with the rapid growth of traffic volume and lack of high-speed road on the structure characteristics, and determines the condition of urban freeway traffi
6、c by high-speed roads and ordinary road traffic of coupling the constraints. So, how to adopt the suitable control method, make the best use of and costly to build urban freeway, relieve the main road and on-ramp, urban traffic congestion, and surrounding areas become Zheng transportation management and city planning department to solve the main problem, 目录目录 一、一、 交通灯信号控制系统交通灯信号控制系统 (一)十字路口交通灯控制实际情况 (二)结合十字路口