基于IMAQ Vision的零件尺寸视觉测量系统

Vision Measurement System of Parts Size Based on IMAQ Vision

针对常规方法测量衔铁小轴零件尺寸效率低、精确差的不足,提出一种基于机器视觉的零件尺寸测量系统。以500万CCD相机、远心镜头、LED背光源进行系统搭建,基于LabVIEW开发平台,利用IMAQ Vision视觉工具包进行软件开发。在该系统中,依据小轴轮廓开发自动截取感兴趣区域(ROI)模块;利用IMAQ Vision视觉函数实现二值化、形态学去噪以及边缘轮廓提取,最终实现几何参数测量。通过稳定性和重复性测试,结果表明:基于IMAQ Vision的视觉测量系统测量精度可达0.005 mm,系统测量稳定、抗干扰能力强。

Aiming at the shortage of low efficiency and poor precision for dimension measurement of armature small shaft part by conventional methods,a kind of part size measuring system based on machine vision was proposed. The system was built with 5 million CCD camera,telecentric lens and LED backlight. The visual software system was developed with IMAQ Vision visual toolkit based on LabVIEW development platform. In this system,the ROI module was developed according to the small shaft contour. In order to achieve geometric parameter measurement,IMAQ Vision function was used to achieve binarization,morphological denoising and edge contour extraction. Through the stability and repeatability test,the results show that the measurement accuracy of the vision system based on IMAQ Vision can reach 0.005 mm. The system has good stability and strong anti-interference ability.