基于机器视觉的毫升级容量瓶注水定容方法
打开文本图片集
本文引用格式：，.基于机器视觉的毫升级容量瓶注水定容方法[J].自动化与信息工程，2025，46（6）：17-23. PENG Xinhua，CAI Yonghong.Machine vision-based water injection andconstant volume method for mililiterscale volumetric flasks[J].Automation& Information Engineering，2025，46（6）：17-23.
关键词：机器视觉；毫升级容量瓶；注水定容；液面检测中图分类号：TH715.1 文献标志码：A 文章编号：1674-2605（2025）06-0003-07DOI： 10.12475/aie.20250603 开放获取
Machine Vision-based Water Injection and Constant Volume Method forMilliliter-scaleVolumetric Flasks
PENGXinhual CAI Yonghong2
（1.Qinghai Instituteof Metrologyand Verification，Xining81ooO1， China 2.Guangzhou Institute of Measurement and Test Technology， Guangzhou 51O663， China）
Abstract：Toaddressthe isueofsignificantdriperrorsduring theautomatic machine vision-based water injectionandonstant volumeprocessformillierscalevolumetricfasks，fourimaging-asistedmenisusetectionmethodswitoutextealreference objectsandasubmergedcontinuous waterinjectionmethodfromthepipeorificeareproposed.During therapid waterinjectionphase intheflaskbody，themaximumrowgrayscaledetectionmethodisemployedforrapidmeniscusdetection.Intheslowwaterinjection phaseattheflaskneck，eitherthemaximumparticledetectionmethodortheedgedetectionmethdisused totrackthemeniscus. Duringthefinalconstantvolumephase，themaximumparticledetectionmethodisfirstused toconstructeregionofinterestforthe meniscus.Then，therowgrayscalegradientdetectionmethodisutlizedforprecisedetectionofthemeniscuslowestpoint（concave point）.Forcases wheretheconcave meniscus isnotobvious，theedgedetection methodisadopted.Experimental verification was conductedusingaself-developedmachinevisionautomatic waterinjectionandconstantvolumedeviceforilliter-scalevolumtric flasks.The results show that the standard deviations for constant volume of1，2，and 5ml volumetric flasks are 0.001 9，0.002 0，and 0.0080ml ，respectively， meeting the requirements of metrological work.
Keywords：machine vision;milliter-scale volumetric flasks; water injectionandconstant volume; meniscus detection
0 引言
容量瓶是一种刻有容量标线的玻璃量器，可根据装入液体液面在标线上的位置获得液体体积。（剩余5543字）
