基于PLC的自动扶梯控制系统设计摘要自动扶梯是现代商场、超市不可缺少的运输工具，用于倾斜输送乘客、货物。传统的自动扶梯控制系统主要采用继电器--接触器进行控制，其缺点是触点多，故障率高、可靠性差、维修工作量大等，而采用PLC组成的控制系统可以很好地解决上述问题。本文通过讨论自动扶梯控制系统的组成，阐述可编程控制器（PLC）在电梯控制中的应用，采用西门子PLC编程的程序控制方式，提出了自动扶梯的PLC控制系统总体设计方案、设计过程及最后的仿真结果，列出了具体的主要硬件电路、电梯的控制梯形图，并给出了系统组成框图和程序流程图。在分析、处理故障信号逻辑关系的基础上，提出了PLC的编程方法，设计了一套完整的自动扶梯控制系统方案。并进行了程序的调试，最终使用MCGS软件将整个控制界面用动画的方式展示了出来。关键词：自动扶梯PLC梯形图MCGS控制系统IControlsystemdesignbasedonPLCofescalatorAbstractAsanindispensabletransportationtoolformodernstoressupermarkets,Escalatorisusedforcarryingpassengers,goods,thetraditionalescalatorcontrolsystemmainlyadoptsrelays-contactdevicecontrol,itsshortcomingiscontacts,highfailurerate,poorreliability,maintenanceworkloadbig,etc,anduseofPLCcontrolsystemcanwellsolvetheproblems.Thispaperdiscussedthecompositionoftheescalatorcontrolsystem,expoundedtheprogrammablecontroller(PLC)intheelevatorcontrolapplication,adoptedthemodeofprogrammingwhichisusedSiemensPLCprogramcontrol,putforwardtheescalatorPLCcontrolsystemoveralldesignscheme,designprocessandthefinalsimulationresults,listthemajorhardwarecircuit,theelevatorcontrolladderdiagram,andgavethesystemcompositiondiagramandprogramflowchart.putforwardPLCprogrammingmethodbasedontheanalysisanddealwiththerefaultsignal,designedasetofcompleteescalatorcontrolsystemscheme.Andtheadjustmentoftheprogram,andeventuallyusedMCGSshowtheentirecontrolinterfaceoutbyanimation.Keywords:EscalatorPLCladderdiagramMCGScontrolsystemII目录摘要.................................................................................................................................IAbstract..........................................................................................................................II第一章引言...................................................................................................................11.1自动扶梯的发展和研究现状...............................................................................11.1.1自动扶梯的发展历史....................................................................................11.1.2国内自动扶梯的实例介绍............................................................................21.2自动扶梯的概述...................................................................................................31.2.1自动扶梯的定义............................................................................................31.2.2自动扶梯的基本结构....................................................................................31.2.3自动扶梯的分类............................................................................................51.2.4自动扶梯的主要参数....................................................................................5第二章S7—200系列PLC的概述...............................................................................62.1PLC的定义..........................................................................................................62.2PLC的基本组成........................................................
