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ParkingGuidanceControlSystemBasedonInternetofThingsIntroductionRoadconstructioninthecityisbecomingbetter,theparkinglotsasthemaintransportinfrastructure,theconstructionoftheparkingareacaneffectivelyalleviatethecitytrafficcongestion,therefore,thestatehasincreasedtheconstructionofparking,especiallytheconstructionofintelligentparkinglots.Parkingspacedetectionsystemasanimportantpartofintelligentparkingyardconstruction,detectionfunctionofparkingspacesisthebasisofparkingspacedetectionsystemoperation,andtheparkinginformationtransmissionisthekeyofimprovingtheefficiencyofparkingdetectionsystem.Therefore,ThispaperputsforwardtheresearchonParkingspacedetectionsystembasedonMagneto-resistivesensorandZigBee,inordertoimprovetheutilizationefficiencyofparkingspaces.Ithasimportantsignificancetotheconstructionofintelligentparkinglot.Thispaperontheparkingspaceswereidentifiedandjudgedbyparkingspacedetectionnodewithreluctancesensorasthemaindetectionfunction.BuildingaverypowerfulZigBeewirelesssensornetwork,theparkinginformationdataistransferredfromonenodetoanothernode,andbywayofrelayistransmittedtothecoordinator.Andbydesigningthehostcomputerdisplayplatform,Parkinglotmanagementcanreal-timeobserveoccupancyofparkingspaces,theimplementationofeffectivemanagementandmonitoringofmovingvehicle.Themainresearchcontentsinthispaperareasfollows:(1)Combinedwiththecharacteristicandworkingprincipleofthemagneto-resistivesensor,basedondetailedanalysisbetweennetworkarchitectureofZigBeetechnology,thenetworkdevicetypeandnetworktopologystructure,thewholestructuredesignofparkingdetectionsystemisproposed.(2)Onthebasisofanalyzinghardwarestructureofparkingspacedetectionnodes,thecoordinatorandrouter,themainhardwarecircuitmoduleisdesignedindetail,includesasensormodule,amicroprocessormodule,serialcommunicationmodule,powermanagementmodule,antennaandbalunmatchingcircuit,andtocompletethePCBdesignofthehardwarecircuitnode.(3)ThedesignofI2Cbusdriver,extractionofmagneticsignalsensordetection,theuseofparkingspacedetectionalgorithmtodeterminethecurrentstateofparkingspaces;basedontheanalysisofZigBeeprotocolstack,thesoftwaredesignofnode;applicationofVisualStudio2010todesignauppercomputersoftware,torealizetheparkinginformationvisualization.Tohelpdriverstoquicklyfindaspareparking,aparkingguidancecontrolsystemwasproposed.Theprincipleofultrasonicrangingwasusedtodetectthestateofaparkingspace,andthroughtheinternetofthingstheparkingdetectortransmitsthereal-timeinformationtothecontrolcenter.Thecontrolcentermainlyisanindustrialcomputerandisresponsiblefordealingwiththereal-timeinformationandsendingthecontrolcommandbyinternetofthings.Theguidancesignsateachcrossroadreceivethewirelesscommandsandexecutethem,bywhichtheguidancefunctionisperformed.TheinternetofthingswasrealizedbyZigBeestarnetwork,inwhichthecontrolcenterisacoordinatorandotherpartsareroutersorterminalequipments.Thesimulationexperimentresultsshowthattheparkingguidancesystemworkswell,andhasthevalueofapplicationandpromotiontosomeextent.Withthesocialprogressandtheeconomicdevelopmentinchina,people’slivingwayischanginggreatlyandcarshavebecomethenecessarytoolsformoreandmorepeople,whichresultsincarsincreasingrapidly,especiallyincities.Thisphenomenonusuallycausesparkingovercrowdedandevenchaosthatisgreatinconveniencetopeople'slives.Soweneedtrytodealwiththeproblembyhigh-techmeans.Withthedevelopmentandapplicationoftheinternetofthingstechnology,itisgraduallyenteringthefieldofsmartparkingsystemthatfunctionsmorepowerfulandintelligent,andisprovidingamorecomprehensivetechnologyserviceforthecarowners.Sotheintelligentparkingmeetstheneedofkeepingabreastofthetimesandisthefruitofhigh-techdevelopment.Theintelligentparkingsystemcannotonlyreducethephenomenonofparkingdifficultlyandsavethecarowner’sparkingtime,butalsocanpromotethestandardizationconstructionoftransportfacilities.Furthermore,itcanbeeasilycombinedintoamorepowerfulintegratedsystemwithotherintelligentsystems,whichissuitableforavarietyofcomprehensiveadvantagedmanagement.Toestablishasetofintelligentparkingtollcollectionmanagementandguidancesystemthatmakesparkingserviceissafe,simpleandaccurate,andtocontroltheconstructingcostandoperatingcosttotheappropriateextentisthecurrenttrendofaparkingmanagement.Improvingtheworkefficiencyandovercomingtheshortcomingofthetraditionalmanualmanagementistheidealmodelofthemodernparking.SystemComponentsThesystemperformsthefunctionofparkingguidanceaccordingtothereal-timestateinformationintheparkingandthecountervaluesofparkingregions,whichreducestheparkingtimeandimprovestheparkingefficiency.AsFig.1shown,thesystemconsistsofcontrolcenter,ultrasonicparkingdetectors,parkingguidancesigns,displayofparkinginformationandcountersfordifferentparkingareas.Theultrasonicparkingdetectorsisthebasicoftheguidancesystem,whichcollectthereal-timestateinformationforthecontrolcenter;theparkingregioncounterisusedtocountthenumberwithinsomeparkingregionandthecoredeviceisinfraredtransmitterandreceiver;theparkingguidancesignisusuallyrealizedbyledlights,whichisresponsibleforguidingthdirection