BioWatchEstimation of Heart and Breathing Rates from Wrist Motions

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1、BioWatch:EstimationofHeartandBreathingRatesfromWristMotionsJavierHernandezDanielMcDuffRosalindW.PicardMediaLabMassachusettsInstituteofTechnologyCambridge,MA,USA{javierhr,djmcduff,picard}@media.mit.eduAbstract—Continueddevelopmentsofsensortechnologyincludinghardwareminiaturizationandincrease

2、dsensitivityhaveenabledthedevelopmentoflessintrusivemethodstomonitorphysiologicalparametersduringdailylife.Inthiswork,wepresentmethodstorecovercardiacandrespiratoryparametersusingaccelerometerandgyroscopesensorsonthewrist.Wedemonstrateaccuratemeasurementsinacontrolledlaboratorystudywherepar

3、ticipants(n=12)heldthreedifferentpositions(standingup,sittingdownandlyingdown)underAccelerometer75BeatsperMinuterelaxedandarousedconditions.Inparticular,weshowitisyxzpossibletoachieveameanabsoluteerrorof1.27beatsperminute(STD:3.37)forheartrateand0.38breathsperminuteGyroscope17BreathsperMinu

4、te(STD:1.19)forbreathingratewhencomparingperformanceyxwithFDA-clearedsensors.Furthermore,weshowcomparablezperformancewithastate-of-the-artwrist-wornheartratemonitor,andwhenmonitoringheartrateofthreeindividualsFig.1.Wepresentanovelapproachformeasuringcardiacandrespiratoryduringtwoconsecutive

5、nightsofin-situsleepmeasurements.parametersfromwristmotionsusingasmartwatch(SamsungGalaxyGear),evenwhenthewristisnotheldagainstthechest.Keywords—accelerometer;gyroscope;smartwatch;wrist;incorporatemotionsensors,theirreadingsaremainlyusedtoballistocardiography;photoplethysmography;sleepmonit

6、oringrecognizeactivitiesanddetectmotionartifacts.AsillustratedinFig.1,ourworkexplorestheuseofmotioninformationontheI.INTRODUCTIONwristinordertoderivemeasuresofcardiacandrespiratoryactivity.InparticularweaddressthefollowingresearchContinuousmeasurementofphysiologicalparametersquestions:Howca

7、nweusethecurrentlyavailablemotionduringdailylifehasmuchpotentialforadvancinghealthsensorswithinwrist-wornwearabledevices,namelyinformatics[21][23].Forinstance,physiologicalparametersaccelerometersandgyroscopes,toaccuratelymeasurecardiacsuchasrestingheart