1、 毕毕 业业 论论 文（设计）文（设计） 论论 文文 题题 目目 智能交通灯设计智能交通灯设计 ( (英英 文文) ) the design of intelligent traffic lights 2015 年年 05 月月 日日 智能交通灯设计 I 摘 要 PLC 可编程序控制器是以微处理器为基础，综合了计算机技术、自动控制技 术和通讯技术发展而来的一种新型工业控制装置。它具有结构简单、编程方便、 可靠性高等优点，已广泛用于工业过程和位置的自动控制中。据统计，可编程控 制器是工业自动化装置中应用最多的一种设备。专家认为，可编程控制器将成为 今后工业控制的主要手段和重要的基础设备之一，PL
2、C、机器人、CAD/CAM 将成 为工业生产的三大支柱。由于 PLC 具有对使用环境适应性强的特性，同时其内部 定时器资源十分丰富，可对目前普遍使用的“渐进式”信号灯进行精确控制，特 别对多岔路口的控制可方便地实现。 因此现在越来越多地将 PLC 应用于交通灯系 统中。同时，PLC 本身还具有通讯联网功能，将同一条道路上的信号灯组成一局 域网进行统一调度管理，可缩短车辆通行等候时间，实现科学化管理。 关键字：交通灯 PLC 通讯 科学管理 渐进式交通灯 梯形图 智能交通灯设计 II Abstract The programmable preface in PLC controller is a
3、 kind of new industry controls the device,it regard microprocessor as the foundation, synthesizing the calculator technique, automatic control technique to develop with the communication technique .It has the construction simple, the plait distance is convenient, high etc. in dependable advantage, a
4、lready extensive used for the industry process with the automatic control of the position inside.According to the covariance, the programmable controller is a kind of equipments that industry automate to equip the inside the application at most.The expert thinks, the programmable controller will bec
5、ome the main means that aftertime industry control with the one of the important foundation equipmentses, the PLC, robot, CAD/ CAM will become three major of pillar that industry produce.Because the PLC has to the strong characteristic in adaptability in environment in usage, its inner part settles
6、at the same time the machine resources is abundant very, can to current widespread usage of“ enter the type gradually“ the signal beacon proceeds the precision controls, special the oscular control in a many branch roads can realizes expediently.So that is applied the PLC more and more now in transportation light system inside.At the same time, PLC still have the communication internet function, constitute the same of the signal beacon on the road a the bureau area net proceeds to unify to ad
