全站式激光準直系統(tǒng)中的測距技術研究.pdf

1、天津大學碩士學位論文全站式激光準直系統(tǒng)中的測距技術研究姓名：康瑋瑋申請學位級別：碩士專業(yè)：測試計量技術及儀器指導教師：林玉池20070601ABSTRACTRecently，themeasuringapproachbythemeansofalignmentlaserbeamasthelinearreferenceshasbeengreatlypromotedLaseralignmenttechnologyhasbeenwidelyuse

2、dinshapeerrormeasuring，suchaslinearconcentricityflamessandparallelismHoweverconventionallasercollimatorsareincapableofobtainingdistancesofmeasuringpointsdirectlywhichcausegreatinconvenienceofmeasuringanddataprocessingEsp

3、eciallyinautomaticmeasurement，distanceinformationofthemeasuringpointisnecessaryContraposethisdeficiencyoftheconventionallasercollimators，totalstationlaseralignmentsystemisdesignedThesystemcombinestheportablelaserinterfer

4、encecollimatorandlaserrangefinderInthelaseralignmentpart，allalignedandenlargedlaserbeamisprojectedtoopticalwedgeplateOptoelectronicdeviceisusedtodetectinterferencefringescreatedbyreflectedlaseroffrontandbacksurfaceofthep

5、lateThroughsignalprocessing，themovementoftheinterferencefringesisobtainedThenthedeviationofthetargetfromthecollimationbeamismeasuredInthelaserrangefindingpart，modulatedlaserisreflectedbythecooperationtargetoppositePhased

6、ifferenceoftheemittedlaserandthereflectedlaseriSobtainedbysignalprocessingThenthedistanceismeasuredbycalculationThetotalstationlaseralignmentsystemhaveboththefunctionoflasercollimatorandlaserrangefinderandmeasureddataist

7、ransmittedtocomputerviawirelessdatatransmissionsystemforfurtherdataprocessinganddisplayinthecomputerinterfaceThebasicarchitecture，theoryhardwareandsoftwaredesignoftotalstationlaseralignmentsystemisintroducedMethodsoflase

8、rrangefindingatediscussedBasedonthecharacteristicofshortdistancemeasurement，theapproachofphaselaserrangefindingisselectedThehardwareandsoftwareofthelaserrangefindingsystemisdesignedSeveralexperimentsofareperformedTheposs

9、ibleerrorsourcesareanalyzedTheresultsindicatethatthedistancemeasurementerrorisbelow5eraandthesystemcanfunctionwellandtheperformanceshavemetthescheduledtargetsKEYWORDS：Laseralignment，totalstation，laserrangefinding，straigh