利用非接触心电和光电容积脉搏波信号进行呼吸率的估计

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1、利用非接触心电和光电容积脉搏波信号进行呼吸率的估计利用非接触心电和光电容积脉搏波信号进行呼吸率的估计RespiratoryRateEstimationUsingContactlessElectrocardiographyandPhotoplethysmography吴丹黄绮雯张元亭摘要本文提出了一种通过非接触心电和脉搏波信号来估计呼吸率的算法，验证时采用压电呼吸传感器来提供对比信号。15名志愿者参加了在体实验，结果表明心电和脉搏波信号提取的呼吸率与呼吸参考信号得到的呼吸率有很高的相关性。其中，心电提取的呼吸率(-0.25±1.11bpm)比脉搏波提

2、取的呼吸率(-0.35±1.68bpm)更加准确。总体认为，非接触心电信号更适合用于呼吸率监测。关键词呼吸率；心电(ECG)；呼吸；光电容积脉搏波(PPG)ABSTRACTInthispaper,wesuggestedareliablealgorithmtoestimaterespiratoryrateusingcontactlesselectrocardiogram(ECG)andphotoplethysmogram(PPG).Apiezoelectricsensorwasusedtodetectreferencesignal.In-situex

3、perimentswereconductedonfifteensubjects.TheresultsindicatedthatbothECG-andPPG-derivedrespiratoryrateswerehighlycorrelatedwithreference.Comparedtothereference,ECG-derivedrespiratoryrate(-0.±1.11bpm)wasmoreaccuratethanPPG-derivedrespiratoryrate(-0.35±1.68bpm).Insummary,contact

4、lessECGwassuitableforthemonitoringofrespiratoryrate.KEYWORDSRespiratoryRate;Electrocardiogram;Respiration;Photoplethysmogram1Introduction2Methodology[1][5,7]Agingpopulationisincreasingallovertheworld.heexperimenthasbeendescribedpreviously.Themonitoringofvitalphysiologicalsigna

5、ls,suchTBriefly,experimenthasbeenconductedon15aselectrocardiogram(ECG)andphotoplethysmogramapparenthealthysubjects(26±5years,from23to38(PPG)forpervasivehomehealthcarethushasdrawnyears).TheECGandPPGweremeasuredfromthebackresearchers’attentioninrecentdecades.AsPPGandwithoutdirec

6、tcontacttotheskin.TheelectrodesforECGECGprovidenotonlycardiacbutalsorespiratorydetectionweremadeofe-textile;meanwhile,optical[2]information,thecontinuouscaptureofthesesignalssensorswereusedforPPGdetection.Theelectrodesandhaspotentialtomeasurerespiratoryrate.G.B.MoodyPPGsensors

7、wereembeddedinamattressunderneathetalcollectedtherespiratorywaveformfrommulti-leadawhitebedsheet.Thereferencerespiratorysignalwas[3]ECGsandK.Nakajimaetalshowedthemonitoringdetectedusingpiezoelectricsensorunderthemattress.ofheartandrespiratoryratessimultaneouslyusing[4]A.Experi

8、mentalProceduresphotoplethysmography.ThemeasureofECGandPPGreq