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.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.
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