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基于LoRa技术的远程抄表系统设计 Abstract Remotemeterreadingisoneofthemostimportantapplicationsoftheinternetofthings.Inthispaper,aremotemeterreadingsystembasedonLoRatechnologyisdesignedandimplemented.Inthissystem,aLoRagatewayisusedtoreceiveandprocesssensordatafrommetersandthensendthedatatoacentralserver.Thesystemadoptsapoint-to-multipointcommunicationmode,whicheffectivelyimprovesthecommunicationdistanceandreducesthecommunicationcost.Theprototypeofthesystemisdesignedandtestedinthelaboratory,andtheresultsshowthatthesystemcanachievereliableandefficientremotemeterreadingperformance,meetingtherequirementsofpracticalapplications. Keywords:remotemeterreading,LoRa,internetofthings,point-to-multipoint,communicationdistance,communicationcost. Introduction Remotemeterreadingisaprocessofacquiringmeterdatawithouttheneedforon-sitevisitsormanualreading.Remotemeterreadinghasmanyadvantagesovertraditionalmeterreadingmethods,suchasreducinglaborcosts,improvingreadingaccuracy,andprovidingreal-timedatamonitoring.Withthedevelopmentoftheinternetofthings(IoT)technology,remotemeterreadinghasbecomeoneofthemostpromisingapplicationsofIoT. AmongthevariousIoTtechnologies,LoRa(LongRange)technologyhasattractedmoreandmoreattentionduetoitslong-range,low-power,andlow-costfeatures.LoRatechnologycanbeusedforvariousIoTapplications,includingsmartagriculture,smartcities,andsmarthomes.Therefore,inthispaper,weproposearemotemeterreadingsystembasedonLoRatechnology. Theproposedsystemconsistsofthreeparts:meter,LoRagateway,andcentralserver,asshowninFigure1.ThemeterisequippedwithaLoRamodule,whichcancollectmeterdataandsendittotheLoRagatewaywirelessly.TheLoRagatewayisresponsibleforreceivingandprocessingsensordatafrommultiplemetersandthensendingthedatatothecentralserver.Thecentralserverstoresandmanagesthemeterdataandprovidesreal-timemonitoringandanalysisfunctions. ![image.png](attachment:image.png) Figure1.Systemarchitecture LoRatechnology LoRaisawirelesstechnologythatusesspread-spectrummodulationtoachievelong-rangeandlow-powercomm