文档介绍：(2011届)
专科毕业设计(论文)
基于PLC多工作方式交通灯设计
学院(部): 电气与信息工程学院
专业: 机电一体化技术
学生姓名:
班级: 机电0821 学号:
指导老师: 职称: 讲师
最终评定成绩:
2011年6月
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,PLC、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。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。
本文选择三菱可编程控制器FX2n为核心部件,着重进行硬件接口设计,利用梯形图和语句表进行编程,实现了十字路口交通灯控制系统的自动化。
关键词: PLC,交通控制,自动化
ABSTRACT
The programmable preface in PLC controller is a kind of new industry controls the device, it regard microprocessor as the foundation, synthesizing the calculator technique, automatic control technique to develop with munication technique .It has the construction simple, the plait distance is convenient, high etc. in dependable advantage, already 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 e the main means that aftertime industry control with the one of the important foundation equipments, the PLC, robot, CAD/ CAM will e 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 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 munication  function, constitute the same of the signal beacon on the road of bureau proceeds