光纖法珀傳感器在冰凍及凍土監(jiān)測(cè)中的應(yīng)用研究.pdf

1、重慶大學(xué)碩士學(xué)位論文光纖法珀傳感器在冰凍及凍土監(jiān)測(cè)中的應(yīng)用研究姓名：陳計(jì)信申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：民商法指導(dǎo)教師：饒?jiān)平?01004英文摘要IIIABSTRACTChinahasveryseriousdisasteroffrozenpermafrosttherefeeffectivelongtermmonitoffrozenpermafrostissignificanttoprovidereferenceinfmationfpotent

2、ialdisaster.FiberFabryPerotsenshastheadvantageoflightmassthindiameterpassiveelectricinsulatingantielectromagicinterferencelowattenuation.ComparedtothetraditionalmonitingmeansthemethodbasedonthephotoniccrystalfiberFabryPe

3、rotsensisofhighreliabilityantielectromagicabilitylowrequirementofpowersupply.BasedonthepreviousresearchthissubjectstudiesthestrainvariationduringthefrozenthawprocessoffrozenpermafrostbyusingofphotoniccrystalfiberFabryPer

4、otsenswhichwasreptedbyourgroupintheinternationalfthefirsttime.itshowsthatthereiscomplicatedstrainvariationduringtheprocessoffrozenthawthawingsettlement.Thatistosaythesituationoffreezethawcanbefoundoutbydetectingtheintern

5、alstrainvibration.MeanwhilethetemperatureenhancedpackageofhollowcephotoniccrystalfiberFibryPerotsensismanufacturedhere.Afterpackagingthiskindofsenscanbeusedtomonitgroundtemperatureowingtoitshightemperaturesensitivity.The

6、reliabilityofjudgmentonfreezethawstatusofthissystemcanbeimprovedeffectivelybymonitingthestraingroundtemperatureofthefrozenpermafrostregionsimultaneously.Themaintasksofthisthesisare：1.Amethodofdetectingtheinternalfreezeth

7、awstatusofthefreezepermafrostbymonitingtheinternalstrainvibrationwithfiberFabryPerotsensisproposedfthefirsttime.2.Indertoimprovethereliabilityofjudgmentonfreezethawstatusbymeasuringtheinternalstraintemperatureofthefreeze

8、permafrostsimultaneouslyakindoftemperatureenhancedpackageschemeispropoundedwhichmakesthephotoniccrystalfibersenshaveveryhightemperaturesensitivity.3.ThetemperatureinsensitivityofphotoniccrystalfiberFabryPerotsensisexplai

9、ned.TheadvantageofhighsensitivityhighqualityoutputsignalstrongantiinterferenceofphotoniccrystalfiberFabryPerotasthedynamicstrainsensisverifiedbyexperiments.AmethodofwkingpointselfcalibrationoffiberFabryPerotisproposedher