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ID:58314252
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页数:8页
时间:2020-09-06
《基于高精度激光扫描仪的路面检测系统.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、Roadsurfaceinspectionusinglaserscannersadaptedforthehighprecision3Dmeasurementsoflargeflatsurfaces.JohnLaurent,MarioTalbot,MichelDoucetNationalOpticsInstituteAbstractInthispaperanopticalconfigurationbasedonauto-synchronizedlaserscanningisproposedforthe30measurementofroadsurjaces.Theadvantagesofthi
2、stechniqueoverclassicaltriangulationmethodsarez=dfexposed.Theroadinspectionsystemdevelopedattheftan0+pNationalOpticsInstitute(NOI)usingthistypeoflasertelemetryisalsopresented.Thissystemusestwoauto-synchronizedlaserscannersinordertoobtaintransverse30andintensityprofilesofroadsurfaces.Alsodescribeda
3、resimplealgorithmswhichdetectandmeasureruttingandFigure1.Triangulation-basedtelemetryprinciple.cruckingconditions.Resultsincluderutmeasurementsonboihrealandsimulated30roadprofilesandacrackmapEquation1,see[2],describestheopticalgainassociatedofanactualpavementsection.withtriangulation-basedsensors;
4、&correspondstoachangeinobject-sensordistanceandApisthe1.IntroductioncorrespondingdisplacementofthelaserspotimageontheRoadinspectionisaverydemandinglargeflatsurfacedetector.Foragivendetector,thesensitivityofthesensorinspectionapplication.Scanningroadsurfacesrequiresdependsonthefocallengthfofthecoll
5、ectionoptics,thecoveringthefull4-meterwidthofatypicalhighwayseparationdbetweenthelaserprojectorandthedetectorcorridorwithsub-millimeterverticalprecision.Eachyear,andtheobject-sensordistancez.Increasingthelaser-substantialamountsofmoneyarespentfortheinspectionofdetectorseparationdinordertoincreaset
6、hesensitivityofroadnetworksdemonstratingtheneedforanautomaticandthesensorisoftennotaviablealternativebecauseofob-jectiveassessmentofroadpavementconditions.Inspitestabilityreasons,limitstotheallowablesensordimensionsoftechnologicalprogress,pavementruttingandcrackandbecauseshadoweffectsbecomeimporta
7、ntasdisdetectionareoftenstillmeasuredmanually.Fortheseincreased.reasons,Quebec’sMinistryofTransportationmandatedNO1todeveloparoadinspectionsystem.Withclassicalapproachestolasertriangulation,suchastheuseofavideoca
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