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自动化学报 2006
使用运动监视传感网络对行走过程中腿部屈伸角的跟踪, PP. 938-946 Keywords: Gaitanalysis,sensornetworks,Kalmanfilter,thighflexionangle Abstract: ？Anaccelerometry-basedgaitanalysisapproachviatheplatformofsensornetworkisreportedinthispaper.Thehardwareunitsofthesensornetworkarewearableaccelerometersthatareattachedatthelimbsofhumanbody.Forthespecifictaskofgaitanalysis,flexionanglesofthethighsduringgaitcyclesarecomputed.AKalmanfilterisdesignedtoestimatetheflexion-extensionangle,angularvelocityofthethighusingtheoutputofthewearableaccelerometers.Theproposedapproachhasbeenappliedtofoursubjectsandtheperformanceiscomparedwithvideobasedapproach.ComparativeresultsindicatethatwiththeproposedKalmanfilter,thesensornetworkisabletotrackthemovementofthethighsduringgaitcycleswithgoodaccuracyandsimultaneouslydetectmajorgaiteventoffootcontactfromthewaveformoftheangularvelocity.
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