面向螺纹精密测量的多模态机器视觉系统

打开文本图片集

Multimodal Machine Vision System for Precision Thread Measurement

DENG Yulan LIN FeizhenMA TingtingMai Zhizhuan SUN Tao （Guangzhou Institute of Measurement and Testing Technology， Guangzhou 510663， China）

Abstract： Toaddressthessues oflowaccuracy，operational diffcultyandsusceptibilityto wear inmanual thread geometric parameter measurement，amultimodal machine visionsystem forprecisionthread measurementis proposed.This systemautomates themeasuremetfgeometricpaametrssuchspitchthadglendmajoameter.Fiagesofteadoke'sn andheadarecapturedusingthemacrocameraandshort-focal-lengthcameraofamultimodal imageacquisitiondevice.Thendualpath measurement methodisdesigned basedonOpenCV geometric image algorithmsandconvolutional neural network to measure thethread'spitch，threadangle，andmajordiameter.Finallanenhancedatentionmechanismdynamicallyfusesthemeasurement resultsfromthetwopaths，achievingabalancebetweenacuracyandstabilityinthefinalresults.Experimentalresultsdeostrate thatthissystem can significantlyimprovetheaccuracy，stability，and eficiencyofthread geometric parameter measurement， possessing substantial practical engineering value and potential for widespread adoption.

Keywords：multimodal machine vision;thread precision measurement;pitch;thread angle; major diameter; dual-path measurement;attentionmechanism

0 引言

在工业生产中，螺纹工件是一种常用的机械结构件，具有密封、机械联接和动能传递等作用。（剩余9162字）