文档介绍：烟台南山学院
毕业论文
题目基于PLC的自动门控制系统
姓名:__ 葛_
所在学院:计算机与电气自动化学院
所学专业:__ 自动化_ ___
班级___ 05自本3班
学号__
指导教师:___
完成时间:____2009-2-20
摘要
随着社会的发展、科技的进步以及人们生活水平的逐步提高,各种方便于生活的自动控制系统开始进入了人们的生活,以PLC为核心的自动门系统就是其中之一。同时也标志了自动控制领域成为了数字化时代的一员。它实用性强,功能齐全,技术先进,使人们相信这是科技进步的成果。它更让人类懂得,数字时代的发展将改变人类的生活,将加快科学技术的发展.
本文所介绍的PLC控制的自动门系统是我们日常生活中在超级市场、公共建筑、银行和医院等入口出经常看到的那种自动平移自动门:它利用红外传感器的感应特性,当有人走进到达感应区或在感应区中有人停留时,传感器就把感应信号传给CPU,通过PLC内部的程序控制给门一个开门信号,自动开门;当有人远离门口走出感应区时,感应信号终止,执行关门指令,另外再执行关门的指令中我们有加了一个延时8S的指令,即人走出感应区后等待8S如果每人进入就执行关门指令。对比继电器控制的自动门系统,PLC控制的自动门系统具有故障率低、可靠性高、维修方便、易控制、易修改等优点,因而得到广泛的应用
关键字:PLC,自动门
Abstract
With the development of society, the progress of science and technology and the increase of people's living standard, convenient to gradually, the automatic control system of life into people's lives, with PLC automatic system for the core is one of them. Also marks the automatic control field became a member of the digital age. It is practical, complete functions, advanced technology, make people believe that it is the results of scientific and technological progress. It makes humans understand, the development of digital era will change our lives will speed up the development of science and technology.
This paper introduces the PLC control system is built in our daily life in the supermarket, public buildings, Banks and hospitals saw the entrance often automatic sliding automatic: it USES infrared sensor induction, when someone into reach inductive zone or in some of inductive zone, the induction sensor signal to the CPU, through the PLC program control internal to the door open, the automatic door is a signal, When someone from outside the area, inductive sensor signal termination, closed, another instruction executed instructions we closed with a delay 8S, namely the instructions of people waiting for 8S inductive zone after entering into close if each instruction. The automatic control system parative relays, PLC control system with low malfunction rate of automat