电气工程与自动化专业基于PLC的交通灯控制系统设计大学毕业论文外文文献翻译及原文.docx

电气工程与自动化专业基于PLC的交通灯控制系统设计大学毕业论文外文文献翻译及原文.docx

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电气工程与自动化专业基于PLC的交通灯控制系统设计大学毕业论文外文文献翻译及原文

毕业设计（论文）

外文文献翻译

文献、资料中文题目：

基于PLC的交通灯控制系统设计

文献、资料英文题目：

PLC-baseddesignoftrafficlights

文献、资料来源：

文献、资料发表（出版）日期：

院（部）：

专业：

电气工程与自动化

班级：

姓名：

学号：

指导教师：

翻译日期：

2017.02.14

毕业设计（外文翻译）

英文题目PLC-baseddesignoftrafficlights

中文题目基于PLC的交通灯设计

PLC-baseddesignoftrafficlights

Abstract:

Onekindoftrafficlightcontrolsystemusingprogrammablelogiccontroller（PLC）,viasoftwarecontroltrafficlightsrunautomatically.Inthesystem,theoriginallineistheprograminsteadoftherelay,programmablelogiccontroller（PLC）systemhardwareandsoftwareresourcestobefairuse.NormaloperationandemergencytransportforadetaileddescriptionandfromtheEastandWestemergenciescanbemutuallylinked.Trafficsignalsystemsandtwoseven-segmentdigitaldisplayinthecountdownorder;alsodiscussedindetailthewiringofthehardwareandPLCladder.TrafficlightsatthecrossroadsoftheremotemonitoringsystemdesignconfigurationsoftwareMCGS,real-timemonitoringoftrafficlights,greatlyimprovingthereliabilityofdatatransmission.Atthesametime,wecanconfigurethetrafficlightstochangethestatusofphotographs.

Keywords:

switchingpower,supplyprotection,circuitsystemdesign

1.Introduction

Withthesocialdevelopmentandprogress,trafficflowbecomesincreasinglyimportant.Ontheonehand,toomanycrossroads,moreandmorevehicles,whicharecausingserioustrafficcongestion.Ontheotherhand,inthelimitedtimeitisnecessarytomaintainthevehicleandpedestrianfastandsafe.Therefore,onekindoftrafficlightcontrolsystemdesign,canbeusedtodisplaytimecountdown,withcomputercontrolledreal-timedata.Inaddition,theconfigurationtechnologyforreal-timeimagesthatreflectthetrafficlights,understandthehistoricalcrossroadsofworktogettrafficlightsvisualization.Thesystemconsistsofhostcomputerandalowcomputer.MCGSconfigurationisinstalledinthehostcomputerislowerbythePLCcontrolsystem.

NormaltrafficsignaltimingdiagramshowninFigure1.Buttherearesomeurgentmatters,forexample.Thereareanumberofambulancestotransportpatientstothehospitalortodealwithanumberoffireenginesandfire.Fireenginesandambulancesrushedtotakeprecedenceoverothertrafficscene.Accordingtourbantrafficcontrolsystem,undernormalcircumstances,twocontrolmethodsandurgencytrafficcontrolfactorsintoaccount.Thisprocesscanshow14segmentencoder.U.S.trafficlightsinstantrecordofthemonitoringprocess.

Emergencycontrolsignalstocontroltrafficemergencyswitch.Ifthereisnoemergencylightsallwork,butwhenanemergencyopen.Inthiscase,thecarisurgentprioritypass.Oncetheemergencyvehiclepasses,emergencyswitchoffimmediately.Thegreenlightinthesamedirectionofthevehiclequicklyflashesthreetimes,followedbythenormaloperation.Ifyouwerefromthenorth-southandeast-westtwoemergencyvehicles,trafficcontrolsystemscanrespondquicklycameearly,andthenanother.

2.TrafficControlSystemDesign

A.Hardwaredesign

CP1HseriesPLCascontroller,displaytheprocedureshouldstopwhenthetimeseriesofabnormalsystemoperation,thetimewillnotbedisplayed.Whentheemergencyproceduresarecompletedtimeseries,countdowndisplayprogramshouldbereset.At220VACsystemisusedtocontroltrafficlights,24VDCcontrolsegmentencoder,Figure2showstheschemeEasterntimedisplay.CP1Hseriesprogrammablelogiccontroller（PLC）isasimplecontroller,whichconsistsof24inputsandsixteenoutputs.BecausetheoutputtotwentyInthissystem,anI/Omodulemustbeextended.CircuitisshowninFigure2.

B.ControlProgramDesign

Sixtimersandtwospecialnormalopenpulseisusedinthissystem,thegreenlightflashesforallnorth-southandeast-timerandaspecialpulse;eightkindsofinterlockinginternalrelayisusedtoimplementtheurgencyandtransmitpulsetwodirectionstoPLC,showninthefigure.TwoSDECinstructionsareusedtodisplaythecountdowndisplaythecorrespondinglight.Asanimportantpartofthecountdowndisplayprogram,eastandwestofthegreenlightreflectedintheview4intheseprogramsdownloadedtotheprogrammablelogiccontroller（PLC）,allthetrafficlightsrunningaccuracy,urgency,andthingscanbeinterlockedfromnorthtosouthstrictly,allthelightscanbesetbacktotheurgencyofpassingstate.Therefore,thesecontrolprogramiscorrect,simple.

C.MonitoringSystem

Computersystemhastwomainfunctions:

anoutputsignalacquisitionanddisplayreal-timestatusoftheprogrammablelogiccontroller（PLC）tocontroltrafficlights,trafficlights.Anothernotificationrobotstatusandhistoryofthestatereal-timecurvebyexaminingthehistoryandalarmwindow.

ThismonitoringsystemdesignandconfigurationsoftwareMCGSconfigurationiseasy.Theserialcommunicationisimplementedasfollows.

Datainspectionmethods:

doubleended

SerialCommunicationsNumber:

COM0ended

Theminimumsamplingperiod:

200ms

ProgrammableLogicController（PLC）Theparametersaredefinedasfollows:

Theminimumsamplingperiodofthebasicproperties:

200ms

Threeread/writechannel:

X0,X1,X2

Sixread-onlyaccess（readU.S.trafficlights）:

Q0-Q5

Allchannelsmustbeconnectedtoavariabledefinedinareal-timedatabaseaccessvisitsandotherparameterstotheirdefaultvalues.Afterasuccessfulrelationship,PLCandcomputercontrolsystemisabletochangethecoloroftheanalogsignallightsinthepictureonthePCbeingcollecteddatathroughtheserialport..Incontrast,bychangingtheparametersofthehost,thecorrespondingvalueiswrittentothePLCinternalrelaycontrol,intersectiontrafficlightscanbeimplemented.Experimentalresultsshowthatthesystemisusuallygoodenoughandanimation.OnlinemonitoringsystemoftrafficlightsinFigure5:

3.Conclusion

Experimentalresultsshowthatthesystemisusuallyconfiguredwithenoughgoodphotos.Thissystemsimplifiestheprogrammablelogiccontroller（PLC）andthecommunicationbetweenthehostcomputerusingindustrialconfigurationsoftwaredevelopmenttimeisgreatlyreduced.Inparticular,moresuitableforcomplexcontrolsystems.WecancontrolthetrafficlightsbythePLCandMCGSconfiguration,replacetheoriginalrelaycontrol,improvethesystem'slifetime.Atthesametime,thismethodcanbeappliedtocontrolthemotorandfluidlevels.Remotecontrolandconfigurationcombinedwiththesimulation,canbeappliedtosimilarcontrolzone.