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1、TrackingSolutionsforFleetManagementSystemsByPriyaShukla,AnandKumarSwami,NehaKocharandFilippoColaianniSTMicroelectronicsDesignanddevelopmentofcommercialGPSreceivershasgainedtremendousmomentumeversinceGPSsatellitesystemsweremadeavailableforgeneralcivilianuse.Withtheincreasingtechnology
2、improvementsandeasy/costeffectiveavailabilityofsuchdevices,therehasbeengreatdemandfortrackingandnavigationsystemswhichdeployGPSreceiverstoestimatethecurrentlocationandtiminginformation.Suchsystems,whenintegratedwithcommunicationstandardssuchasGSM/GPRS,additionalsensorsandamastercontr
3、oller,resultintrackingsystemswhicharenowadaysusedextensivelyinanumberofapplicationscenarios.Inthisarticle,wewilldiscussonesuchutilityofthesesystemsinfleetmanagementsystemswhereinfleetownersmaykeeptrackoftheirvehicles’locationandstatusensuringsecurityandsafetyofthevehiclesandincreaset
4、hebusinessproductivitybybettercommunicationandtracking.UtilityofthesesystemsisfurtherincreasedwiththeintegrationofMEMSaccelerometersandgyroscopes,camerasensorsanddriverauthenticationsystemswhichcollectivelyimplementa“black-box”typeoffunctionalityandprovideanti-theft,vehiclecrashdetec
5、tion,andwarningtotheadministration,therebytriggeringsecurityandrescueoperations.Thecompletesolutionincludesavehicletrackingunitandfleetmanagementsoftware,whereinthelocationofthevehiclescanbeviewedinamapdisplayformatonaPC/Laptop/Phonewithinternetconnectivity.Figure1:VehicletrackingSys
6、temsOVERVIEW:Ingeneral,trackingsolutionscanbeclassifiedas‘a(chǎn)ctiverealtimetrackingandpassivetrackingsolutions.’Inpassivetrackingsolutions,thelocationandstatusinformationofthevehiclesiscontinuouslymonitoredandstoredinthememorydeviceatthevehicleend.Uponreachingthedestination,thissystemis
7、interfacedwiththecomputerinordertodownloadtheinformationanddisplayonasuitablesoftwareapplication.Ontheotherhand,realtimeoractivesolutionsacquirethevehicle’slocationdataandtransmitthesameinrealtimeoveracommunicationmedium,generallyGSM/GPRS.Inrealtimetracking,systemscancommunicatewitht
8、hewebapplica