基于CCD的光纤式位移检测技术  

Technique for the Displacement Measurement Based on CCD and Optical Fiber

作　　者：李为民[1] 俞巧云[1] 胡红专[1] 邓伟平江奇娟 邢晓正[1] 汪静[1] 

机构地区：[1]中国科学技术大学精密机械与精密仪器系,合肥230027

出　　处：《中国科学技术大学学报》2003年第1期74-77,共4页JUSTC

基　　金：中国科学技术大学青年基金资助项目 (KB0 90 7)

摘　　要：介绍一种精确、远距离非接触检测机械位移的方法 .检测系统采用面阵CCD摄像机获取被测光纤端部出射光斑图像的灰度分布 ,由灰度加权平均法提取光斑的特征点 ,通过检测特征点的位移获得光纤的位移 ,从而得到被测件的位移 .实验结果表明 ,系统的稳定性为 1 .5 μm 。The non-contact measurement method based on matrix C CD and optical fiber was used to measure the mechanical displacement precisely a nd remotely. The matrix CCD camera captured the gray distribution of the output light spot from the end of optical fiber. The characteristic point of the light spot was acquired by the method of gray weighted average. The displacement of th e optical fiber was obtained through the measured displacement of the characteri stic point, and the displacement of the measured object was detected. Experiment al result show that the measurement accuracy is 1.5 μm, reaching sub-pixel res olution.

关 键 词：位移测量 灰度加权平均法 光纤 面阵CCD 

分 类 号：TP391[自动化与计算机技术—计算机应用技术] TN29[自动化与计算机技术—计算机科学与技术]