激光扫描三维形貌测量系统的优化研究

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1、天津大学硕士学位论文激光扫描三维形貌测量系统的优化研究姓名：庞晓红申请学位级别：硕士专业：测试计量技术及仪器指导教师：邾继贵20090801ABSTRACT：Inrecentyears，manyfieldscorrelativewiththeReverseEngineeringaredrivedbytheRapidDevelopmentoftheReverseEngineering．Especiallythenon—contactlaserscanningmeasurementwhichhavegoodmeasurementspeed，measurementofhigheff

2、iciency．easyautomation,andgoodflexibility．，nlethree—dimensionalshapemeasurementtechnologyresearchhasbeenincreasingattentioninthemodemindustryandisthenewtrendofdevelopment．Wimathoroughunderstandingoflaserscanningtechnologydevelopmentathomeandabroad，analyzethecharacteristicsoflaserthree-dimen

3、sionalscanningsystemwhichisbeingstudied．Wimhigherdemands．developasetofmeasurementsystemwithhardwareandsoftwaresystemofrelativelygoodoverallperformance，whichgreatlyimprovesthestabilityofthemeasurementsystemandefficiencyofmeasurement．功especificworkisasfollows：1．Detailedanalysisandresearchhave

4、beencarried．butonhardwarecomponentsofthemeasuringsystemandtheoptimaldesignhasbeencarriedoutonthescanningprobehardware，mechanicaltransmissionstructure，controlcircuitandcontrolprocedures，whicheffectivelyimprovestheefficiencyofmeasurement．Amongthem,thenumberofthelasersincreasetosevenandtheprob

5、estructureisre-designed；scanningtransmissionpartisreplacedbymotorcontrolchip，andtheuseofgeartransmissionstructureimprovestheeffectivenessofthemeasurementdata；redesignalasercontrolcircuitandmotordrivecircuitandenhancecommunicationbetweenthehostcomputerandtheslavecomputerthroughoptimizationof

6、controlprocedures．2．nedataofpointcloudsCanbeacquiredbyscanningthesurface．Thesedataofpointcloudsforanalysisandresearchforthedataproblems，thedatawillhavet0bedealtwith,suchasdisplays，de·noising，streamlinesamplingandSOon，togetthevalueclosertothetruevalueofthemeasurementsandlayagoodfoundationfor

7、thefollow—upthree—dimensionalreconstruction．3．111eoptimizedsystemisusedtoscantheobject．Experimentresultsshowsthattheoptimaldesignachievesthedesiredvision,scanningefficiencyisimprovedandmeasurementdataistrueandreliable．Afterpropertreatment，itwillbemorepro