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三菱PLC交通灯设计
1.2万字 17页
有详细梯形图
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xx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。在该设计中,还引入F940触摸屏模拟十字路口红绿灯闪亮及车辆通行,十分形象地显示出了PLC在交通灯系统中的实际应用。
关键词:交通灯 PLC 触摸屏 通讯
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 the communication 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 become 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 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 adjust a management, can shorten the vehicle go through waiting time, realizing scientific management.In that design, still leads into the F940 touch hold the emulation intersections traffic lights bright and the vehicle goes through,images an actual application for displaying PLC in transportation light system.
Keywords: The transportation light, PLC ,The touch holds , Communication
采用FX2N系列可编程序控制器控制十字路口交通灯工作。可编程序控制器由STOP状态进入RUN状态时,同时触摸键“启动”按钮按下,M11由OFF变成ON时,将M10置为ON,东西方向绿灯亮,初始化脉冲M8002将M20置为ON,东西方向车子开始行驶,南北车辆等待。T0开始计时,25S后绿灯闪亮3S,闪烁次数由C0控制,3次。Y1为ON,黄灯亮,东西方向后面车辆停止,已过线的车辆继续行驶。T1计时2S后,Y2为ON,东西红灯亮。
此时,Y4为ON,南北绿灯亮,南北方向车子开始行驶,东西车辆等待。T5计时25S,绿灯闪亮,由C1控制次数,3次。状态同东西方向,T7计时黄灯2S。
触摸键“停止”按钮按下,M12由OFF变成ON时,所有灯Y0至Y5全复位,车辆位置M20至M29,M30至M39全复位,返回初始状态。
参考文献
[1] 廖常初,《可编程序控制器的编程方法与工程应用》,重庆大学出版社
[2] 钟肇新,彭侃,《可编程序控制器原理及应用》,华南理工大学出版社