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1、S.Leeetal.:APyroelectricInfraredSensor-basedIndoorLocation-AwareSystemfortheSmartHomeAPyroelectricInfraredSensor-basedIndoorLocation-AwareSystemfortheSmartHomeSukLee,Member,IEEE,KyoungNamHa,KyungChangLee,Member,IEEEAbstract—Smarthomeisexpectedtooffervariousintelligents
2、ervicesbyrecognizingresidentsalongwiththeirlifestyleandfeelings.Oneofthekeyissuesforrealizingthesmarthomeishowtodetectthelocationsofresidents.Currently,theresearcheffortisfocusedontwoapproaches:terminal-basedandnon-terminal-basedmethods.Theterminal-basedmethodemploysat
3、ypeofdevicethatshouldbecarriedbytheresidentwhilethenon-terminal-basedmethodrequiresnosuchdevice.Thispaperpresentsanovelnon-terminal-basedapproachusinganarrayofpyroelectricinfraredsensors(PIRsensors)thatcandetectresidents.Thefeasibilityofthesystemisevaluatedexperimental
4、lyonatestbed.IndexTerms—smarthome,location-basedservice,pyroelectricinfraredsensor(PIRsensor),location-recognitionalgorithmI.INTRODUCTIONThereisagrowinginterestinsmarthomeasawaytoofferaconvenient,comfortable,andsaferesidentialenvironment[1],[2].Ingeneral,thesmarthomeai
5、mstoofferappropriateintelligentservicestoactivelyassistintheresident’slifesuchashousework,amusement,rest,andsleep.Hence,inordertoenhancetheresident’sconvenienceandsafety,devicessuchashomeappliances,multimediaappliances,andinternetappliancesshouldbeconnectedviaahomenetw
6、orksystem,asshowninFig.1,andtheyshouldbecontrolledormonitoredremotelyusingatelevision(TV)orpersonaldigitalassistant(PDA)[3],[4].Fig.1.ArchitectureofthehomenetworksystemforsmarthomeEspecially,attentionhasbeenfocusedonlocation-basedservicesasawaytoofferhigh-qualityintell
7、igentservices,whileconsideringhumanfactorssuchaspatternofliving,health,andfeelingsofaresident[5]-[7].Thatis,ifthesmarthomecanrecognizetheresident’spatternoflivingorhealth,thenhomeappliancesshouldbeabletoanticipatetheresident’sneedsandofferappropriateintelligentservicem
8、oreactively.Forexample,inapassiveserviceenvironment,theresidentcontrolstheoperationoftheHVAC(heating,ventilating,anda
