An integrated system based on wireless sensor networks for patient.pdf

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1、AdHocNetworks11(2013)39–53ContentslistsavailableatSciVerseScienceDirectAdHocNetworksjournalhomepage:www.elsevier.com/locate/adhocAnintegratedsystembasedonwirelesssensornetworksforpatientmonitoring,localizationandtrackingAlessandroRedondi,MarcoChirico

2、,LucaBorsani,MatteoCesana⇑,MarcoTagliasacchiDipartimentodiElettronicaeInformazione,PolitecnicodiMilano,P.zzaLeonardodaVinci,32,Milano,ItalyarticleinfoabstractArticlehistory:ThisworksdescribesthesystemLAURAwhichprovidespatientlocalization,trackingandR

3、eceived28November2011monitoringserviceswithinnursinginstitutesthroughawirelesssensornetwork.Thesys-Receivedinrevisedform23March2012temiscomposedofthreefunctionalblocks:alocalizationandtrackingenginewhichper-Accepted25April2012formslocalizationoutofsa

4、mplesofthereceivedsignalstrengthandtrackingthroughaAvailableonline4May2012particlefilter;apersonalmonitoringmodulebasedonbi-axialaccelerometerswhichclas-sifiesthemovementsofthepatientseventuallydetectinghazardoussituations,andawire-Keywords:lesscommuni

5、cationinfrastructuretodelivertheinformationremotely.ThepaperIndoorlocalizationcommentsonthedesignanddimensioningofthebuildingblocks.Twoapproachesarepro-E-healthWirelesssensornetworkposedtotheimplementationofthelocalizationandtrackingengine:acentraliz

6、edimple-mentationwherelocalizationisexecutedcentrallyoutofinformationcollectedlocally,andadistributedsolutionwherethelocalizationisperformedatthemobilenodesandtheout-comeisdeliveredtothecentralcontroller.Strengthsandweaknessesofthetwosolutionsarehigh

7、lightedfromasystem’sperspectiveintermsoflocalizationaccuracy,energyeffi-ciencyandtrafficloads.LAURAmodulesarefinallytestedinarealenvironmentusingcom-mercialhardware.Themainoutcomesareanaveragelocalizationerrorlowerthan2min80%ofthecasesandamovementsclass

8、ificationaccuracyashighas90%.Ó2012ElsevierB.V.Allrightsreserved.1.Introductionular,inthefieldofdeviceminiaturizationandwirelesscommunicationtechnologieshaveopenedupenormousTheimprovementofhealthcaresystemsandinfrastruc-opportunitiestodesignubiquitousan