基于CCD的工件直径动态检测

Dynamic Testing of The Workpiece Diameter based on CCD

为实现工件直径的在线检测,本文采用了CCD动态检测方法,它以CCD和微型计算机为核心构成了工件直径动态检测系统。将工件直径影像成像于CCD光敏面上,经光电转换可获得CCD像元的电荷图像,以CCD像元(素)的间距为尺子实现对工件影像的度量,所以它属于模–数变换法。将CCD输出的光电脉冲经放大、整形后输入计算机,通过运算处理即得到工件直径值。用标准工件直径做了大量的实验测试,其系统精确度超过1.5μm,从而得到CCD动态检测系统具有精确度高和实际应用价值的结论。

In modern production, in order to achieve workpiece diameter on-line measurement, this paper uses the CCD dynamic detection method. The method to CCD and microcomputer as the core constitutes a workpiece diameter dynamic detection system. The diameter of the workpiece and imaging in CCD photosensitive surface. After the photoelectric conversion into CCD pixel charge image. The method to CCD pixel （ ET ） spacing on the workpiece image measurement ruler, so it belongs to die - transformation method. The CCD output of the photoelectric pulse amplifying, shaping input into the computer after processing, will receive the workpiece diameter value. Using the standard workpiece diameter do lots of experiments, the precision of the system is smaller than 1.5 UG / M results, so as to get CCD dynamic detection system with high accuracy and practical value of the conclusion.