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针对目前微小深度尺寸现场测量难的问题,设计开发了一种基于光切原理的现场视觉检测系统,应用自主开发的基于Directshow和VC++的图像采集和处理软件,能快速、准确地检测被测工件表面的微小深度尺寸。实验结果表明,该测量系统景深达700μm,可测量20～990μm的深度尺寸,系统整体的测量不确定度优于3%;在200～500μm范围内,系统测量误差小于1.5μm,测量不确定度优于1%。通过模拟易开盖生产现场的振动环境(振动频率为6.7Hz,位移振幅360μm),对该测量系统振动适应性做了分析,实验验证了本系统能够用于类似易开盖生产现场的加工环境中。
In view of the difficulty of on-the-spot measurement of the small depth size, a visual inspection system based on the principle of light cutting is designed and developed. The self-developed image acquisition and processing software based on Directshow and VC ++ can detect the tested workpiece quickly and accurately The surface of the tiny depth size. The experimental results show that the depth of field of this measuring system can reach 700μm and measure the depth of 20 ~ 990μm, the measurement uncertainty of the whole system is better than 3%. The measurement error of the system is less than 1.5μm in the range of 200 ~ 500μm. The measurement uncertainty Better than 1%. The vibration adaptability of the measuring system was analyzed by simulating the vibration environment (vibration frequency of 6.7 Hz, displacement amplitude of 360 μm) of the easy-open-lid production site. The experiment proves that the system can be used in the processing environment similar to the easy open-lid production site in.