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新疆机电职业技术学院毕业设计（论文）新疆机电职业技术学院电气工程系2012毕业设计毕业设计题目英文题目姓名：班级：学号：指导教师：新疆机电职业技术学院毕业设计（论文）摘要电梯是高层建筑不可缺少的运输工具，用于垂直运送乘客和货物，传统的电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，使电梯运行更加安全、方便、舒适。目前在电梯行业已得到广泛应用。采用PLC对电梯进行控制，通过合理的选择和设计，提高了电梯的控制水平，并改善了电梯运行的舒适感，使电梯达到了较为理想的控制效果。本文阐述了可编程控制器PLC在电梯控制中的应用。主要介绍了四层电梯的PLC控制系统总体设计方案、设计过程、组成，列出了具体的主要硬件电路、电梯的控制梯形图及指令表。并给出了系统组成框图，在分析、处理随机信号逻辑关系的基础上，提出了PLC的编程方法。用MCGS组态软件实现了对PLC控制的四层电梯的模拟，计算机与PLC通过串行通信交换信息，用PLC来控制“虚拟”电梯。通过组态软件中命令语言编写的程序，使虚拟电梯的轿厢和门执行相应的动作，用画面上的指示灯和楼层显示器来显示来自PLC的各种状态信息。关键词：电梯控制;可编程控制器;组态软件；MCGS新疆机电职业技术学院毕业设计（论文）AbstractTheelevatoristhehigh-riseconstructionessentialtransportmeans,usesinverticalshippingthepassengerandthecargo,thetraditionalelevatorcontrolsystemmainlyusestherelay.Thecontactdevicecarriesonthecontrol,itsshortcomingistheelectroniccontactaremany,failureratehigh,reliabilitybad,serviceworkloadbigandsoon,butusesthePLCcompositionthecontrolsystemtobepossibletosolvetheaboveproblemwell,causestheelevatormovementtobesafer,tobeconvenient,iscomfortable.Atpresentobtainedthewidespreadapplicationintheelevatorprofession.Inthelayerandthecontrolfunctionfewsituations;usethePLCcontroltobeadvantageous.ThearticleelaboratedprogrammablecontrollerPLCintheelevatorcontrolapplication.MainlyintroducedfourelevatorPLCcontrolsystemoverallprojectdesigns,thedesignprocess,thecomposition,havelistedtheconcretemainhardwareelectriccircuit,theelevatorcontrolladderdiagramandtheinstructionlist.Andgivingthesystemcompositiondiagramandtheprogramflowdiagram,intheanalysis,intheprocessingrandomsignallogicrelationsfoundation,proposedthePLCprogrammingmethod.UsingtheMCGSconfigurationsoftwarerealizethePLCcontrolofthefourlayersofcomputersimulation,theelevatorwithPLCthroughserialcommunicationexchangeinformationwithPLCtocontrol,virtualtheelevator.Throughtheconfigurationsoftwarecommandlanguageprogram,makethevirtualelevatorofthecardoorandexecutesaction,usepicturesoftheindicatorandthefloortodisplaymonitorfromthevariousstatesinformationwithPLC.Keywords:elevator;ProgrammableLogiccontroller;configurationsoftware;新疆机电职业技术学院毕业设计（论文）MCGS目录第一章绪论..........................................................................................11.1电梯的国内外发展情况..................................................................11.2课题研究的意义及内容..................................................................1第二章电梯和PLC的简介...................................................................32.1电梯的定义......................................................................................32.2电梯的结构及组成..........................................................................32.3PLC的定义及特点...........................................................................5第三章电梯控制系统的硬件设计.......................................................73.1电梯的控制要求..............................................................................73.2四层电梯曳引电机及门电机电路图.............................................103.3硬件的选型....................................................................................113.3.1SIEMENSS7-200PLC简介.......................................................113.2.2CPU的选型.............................................................................113.4PLC外部接线图.............................................................................13第四章软件设计及程序的仿真.........................................................154.1step7-Micro/Win程序语言............................................................154.2程序设计........................................................................................154.2.1内指令信号的登记及消除......................................................154.2.2外召唤信号的登记及消除.....................................................16新疆机电职业技术学院毕业设计（论文）4.2.3平层信号处理.........................................................................194.2.4上行信号.................................................................................214.2.5下行信号.................................................................................234.2.6开门和关门信号....................................................................244.3电梯PLC程序的软件仿真............................................................254.3.1仿真软件的简介....................................................................254.3.2电梯程序的PLC仿真.............................................................25第五章组态监控系统设计................................................................305.1MCGS软件的简介.........................................................................305.2建立界面........................................................................................315.2.1建立窗口.................................................................................315.2.2定义数据对象.........................................................................315.3编辑界面.......................................................................................325.4MCGS与PLC的连接......................................................................34参考文献..............................................................................................35致谢..........