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19983(710032),,,,;;;ThedesignofaeireuitfordetectingRESPsingalusingimPedaneemethodQiJianxin,etal(XiJingHospital,theFourthMilitaryMediealUniversity,Xian,710032)AbstractARESPsignaldeteetingeireuitusingimpedaneemethod15introdueed.Inthiseireuit,afoureleetrodearrangement15used,whieheanredueemovementartifaetinus-ingtwoeleetrodes.Forsignalproeessing,aseriesofmethodssuehasfilteringwaveandampliyingareusedtoovereomethedisturbaneeoftheheartbeatandbloodflowsigals.TheeireuithassueeessfullybeenappliedinthebloekingphysiologiealparametersmoniterthatwehavedeveloPed.Keywordsimpedanee;RESPsignal;disturbanee;filteringwave1,,,,[1j,,,,,,2t,RLC,14119983,,,,RpL/A:p,L/A,,,,pL/AR,I,,:vIxR,VR,,,,,,,;[2j,,,,3[4[52CCC1444}23.1519983,;,sokHz,RlClRZCZRlRZ10k,CI=CZ=300P,f=1/2RC=sokHz2122RSQlQZ,DlDZ,VRI,60V,30k,,,VRI,lmA3.2,,UZ:AUZ:B,UZ:C,,253.3U3:AD3D4U3:BR27C4,3.4U3:CU3:D,0.08Hz~10Hz,,U4:AU4:B,,0.3Hz,1.ZHz,0.SHz,,10,4,403.5USU6,,,DClCI,R42R43,,C13C14,10ZV3.6:50kHz:lmA:100Mn:0.08~0.SHz:ZV4,,,,,1BakerLE:PrineiplesoftheImPedeneeTeehnique,IEEEENGINEERINGINMEDICINEANDBIOLOGYMAG-AZINE,11~16,Mareh,19892BakerLE:APPlieationsoftheImpedaneeTeehniquetotheRespiratorySystem,IEEEENGINEERINGINMEDICINEANDBIOLOGYMAGAZINE,50~52,Mareh,19893,.,,19854,.,,19875,..,1994,18(4):199~202(19971203)6