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ID:36509587
大小:1.91 MB
页数:60页
时间:2019-05-11
《应用光电容积脉搏波测量动脉僵硬度的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、一Y847341应用光电容积脉搏波测量动脉僵硬度的研究StudyonMeasurementofArtery,StiffnessBasedonDigitalVolumePulseWave学科专业:测试计量技术及仪器研究生:刘云丽指导教师:蒋诚志教授天津大学精密仪器与光电子工程学院二零零五年一月·ABSTRACTCardiovasculardisease1Soneoftheheavydiseaseswhichharmthehumanhealth,andWorldHealthOrganizationhasnamed
2、itasthefirstkillerwhichharmsthehumanhealthinthe21stcentury.Theessenceofcardiovasculardiseaseisbloodvesseldiseaseorabnormity.Ithelpstodiagnosepatientnearclinicsituationbydeterminingarterialstiffnessandlargearteryfunctionatearlierperiodandguardagainstefficien
3、tly,SOithasgreatscienceandsocialvalue.Nowthenon—invasivewayshavebothadvantagesanddisadvantages.andtheyareexpensive.complexandlackoftheory.Thephotoplethysmographyissimpleandcheap,ithasgreatpotential.Soweusedigitalvolumepulse(DVP)toassesslargearterialstiffnes
4、s.ItmeasuresarterialstiffnessbyanalyzingcontourofDVP.Theaimofthearticleistestingitsfeasibility.Thearticledidthefeasibilitystudyfromtwoaspectsoftheoryandexperiment.Abouttheory,weintroducedknowledgeabouttheproducetheoryofpulsewave,thestructureofarterialvessel
5、anditschangeafterarteriosclerosis,therelationbetweenpulsewavevelocityandarterystatus,pressurewavetransmissionandreflectiontheoryandSOon.ThuswegavethetheorybasisofusingDVPtodeterminethearterystiffnessbythenumbers.Wedevelopedasystemtodeterminearterialstiffnes
6、sbasedonVisualInsmanentcvI)usingabovetheoryinordertodoexperiment.Wepresentedthehardwareandsoftwaredesignofthesystem.Theemphasisofhardwareispulsewavemeasurecircuit,andtheemphasisofsoftwareisdataprocessing.ThecharacteristicofVIiseasytomodifj,andquicktodevelop
7、,SOitcallshortentheperiodofinstrumentdesignlargely.Thereprodueibilityexperimentofthesystemindicatedithashighreproducibilityandissuitabletodofeasibilitystudy.Thenwevalidatedthefeasibilitybyexperiment,includingfindingmeasureconditionanddoingfeasibilitystudy.F
8、irstly,wecomparedthepulsewavesunderdifferentconditions,thenchoseadaptablecondition.Secondly,wechoseastandardinstrument,measuredarterialstiffnessbyOursystemandstandardinstrumentsimultaneously.Wecollecte
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