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基于多个线激光传感器旋转扫描的铸钢车轮在线三维测量技术.docx

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基于多个线激光传感器旋转扫描的铸钢车轮在线三维测量技术 Title:OnlineThree-DimensionalMeasurementTechniqueforCastSteelWheelBasedonMultipleLineLaserSensors'RotationalScanning Abstract: Accuratemeasurementofcaststeelwheelsplaysacrucialroleinqualitycontrolandensuringsafetyinrailwaytransportation.Thispaperproposesanonlinethree-dimensionalmeasurementtechniqueforcaststeelwheelsusingmultiplelinelasersensors'rotationalscanning.Thetechniqueaimstoovercomethelimitationsofconventionalmeasurementmethods,suchastime-consumingandtediousmanualmeasurements,byautomatingthedataacquisitionprocessandprovidingaccurateandefficientmeasurements. Introduction: Caststeelwheelsarevitalcomponentsintherailwayindustry,andtheirqualitydirectlyaffectsthesafetyandperformanceoftrains.Traditionalmeasurementmethodsforcaststeelwheelsinvolvemanualmeasurementwithcalipers,whicharetime-consumingandpronetohumanerrors.Toaddresstheselimitations,theproposedtechniqueutilizesmultiplelinelasersensorsmountedonarotatingscanningdevicetoobtainprecisethree-dimensionalmeasurementsofcaststeelwheels. Methodology: 1.LineLaserSensorAssembly:Thesystemcomprisesmultiplelinelasersensorsevenlydistributedalongaring-shapedmechanismmountedonthescanningdevice.Theselinelasersensorsemitlaserlinesontothesurfaceofthewheelfromdifferentangles,allowingforthecaptureofacomprehensive3Dpointcloudofthewheel'ssurface. 2.RotationalScanning:Thescanningdeviceisdesignedtorotatethewheelcontinuouslywhilethelinelasersensorscapturethereflectedlaserlines.Therotationalmovementensuresthattheentiresurfaceofthewheelisscanned,resultinginacompleteandaccuraterepresentationofthewheel'sgeometry. 3.DataAcquisition:Thelinelasersensorscapturethereflectedlaserlines,andthepositionsoftheselinesonthewheel'ssurfacearerecorded.Thesepositionmeasurementsareconvertedintothree-dimensionalcoordinatesusingtheknownpositionsofthelinelasersensorsandthetrigonometricrelationshipbetweenthelaserlinesandthewheel'ssurface. 4.SensorCalibration:Toensuremeasurementaccuracy,acalibrationprocessisperformedbeforehandtodeter