三波長血氧飽和度測量儀的研制.pdf

1、分類號密級UDC學(xué)位論文三波長血氧飽和度測量儀的研制三波長血氧飽和度測量儀的研制（題名和副題名）林政劍林政劍（作者姓名）指導(dǎo)教師姓名周山宏高工周山宏高工電子科技大學(xué)電子科技大學(xué)成都成都（職務(wù)、職稱、學(xué)位、單位名稱及地址）申請學(xué)位級別碩士碩士專業(yè)名稱生物醫(yī)學(xué)工程生物醫(yī)學(xué)工程論文提交日期2005.4論文答辯日期2005.5學(xué)位授予單位和日期電子科技大學(xué)電子科技大學(xué)答辯委員會主席評閱人2005年4月4日注1注明《國際十進(jìn)分類法UDC》的類號三

2、波長血氧飽和度測量儀的研制IIAbstractOxygenisthekeymaterialtohuman’slifeoxygensaturationisoneoftheimptantindexesreflectingganicoxgendeliverystatus.Conventionaltwowavelengthpulseoximeterisaccurateathighoxygensatuationunderavarietyofphy

3、siologicalconditionsbutshowwseningaccuracyatlowersaturation.TheprincipletechniqueoftheoximetertheLamberBeerLawthedifferenceinopticalabsbenciesofthecomponentsintissuesrelatedtodifferentlightwavelengthemployedintransmittan

4、ceoxymetryareanalyzedindertoaccuratelymeasurelowersaturationofthefutustheinfantthepatientsinintensivecare.Theoverseasresearchresultabouttheoptimalionofwavelengthflowsaturationpulseoximeterareadopted.Thestableaccuracyofth

5、epulseoximeteroccurswhenthefractionalchangeinphotonpathsduetoperturbationsinthetissueisequivalentatthetwowavelengths.Additionallytheperationdepthoftheprobinglightneedstobewellmatchedatthetwowavelengthindertominimizetheef

6、fectsoftissueheterogeneity.Atlowsaturationitisbetterusing735890nmwavelengththanthatusing660940nmwavelength.Threewavelengthspulseoximeterbased51micprocessisdevelopedfthesakeofimprovinglowsaturationprecisionanewarithmetici

7、sbroughtfth.Thispaperalsoincludesthesoftwarehardwaredesignimplementionofthethree–wavelengthpulseoximeter.Atlastavarietyoffactsaffectingmeasureprecisionareanalyzedthemeansofeliminatinginterferentialsignalsarepresented.Key