计量学报2025，Vol.46Issue(10)：1454-1460,7.DOI:10.3969/j.issn.1000-1158.2025.10.07
基于双CCD相机标定的面形测量中反向激光共线性位姿检测方法
Detection Method for Reverse Laser Position and Orientation in Surface Shape Measurement Based on Dual-CCD Camera Calibration
摘要
Abstract
A high-precision requirements for reverse laser collinearity in surface shape measurement is addressed and a laser displacement sensor optical axis pose measurement method is proposed based on dual-CCD cameras.The method utilizes the collinear reflection path of a single laser beam,establishes a three-dimensional coordinate system for the measurement system by defining the left image plane coordinate system as the xOy reference plane and integrating a grating ruler as the z-axis.Two CCD cameras continuously capture the coordinates of the laser spot centers,determine the linear equation of the laser optical axis through multi-point fitting,and propose a novel pose relationship calculation method that directly computes the positional and angular relationship between two laser beams via coordinate system transformation.This approach optimizes the traditional single-CCD camera detection method,reduces human errors introduced by stepwise calibration,and improves detection efficiency.Experimental results show that before adjustment,the angle between the two laser beams is 0.337° with a distance of 2.179 mm.After adjustment,the angle is reduced to 0.054° and the distance to 0.431 mm,demonstrating that this method achieves sub-angular-minute(<0.1°)precision for optical axis alignment and sub-millimeter-level(<0.5 mm)accuracy for positional deviation.The method facilitates the quantitative analysis of measurement errors caused by laser non-collinearity in surface shape measurement while optimizing the traditional single-CCD detection process,simplifying operations,and minimizing error sources.关键词
几何量计量/面形测量/反向激光/共线性检测/CCD相机Key words
geometric measurement/surface shape measurement/inverse laser/collinearity detection/CCD camera引用本文复制引用
罗明哲,李加福,张楠,董钧港,杜华,朱小平..基于双CCD相机标定的面形测量中反向激光共线性位姿检测方法[J].计量学报,2025,46(10):1454-1460,7.基金项目
国家自然科学基金青年基金项目(52205579) （52205579）
国家市场监督管理总局质量技术基础能力建设(ANL2207) （ANL2207）
中国计量科学研究院基本科研业务费(AKYZZ2205) （AKYZZ2205）
