高温H型钢截面尺寸视觉测量方法研究  

Research on Visual Measurement Method of High Temperature H-beam Section Size

作　　者：杜旺哲 陈康辉 李旭为 刘元铭 郑宪广 赵雪霞[1,2,3] 王涛 王志华[1,2,3] DU Wangzhe;CHEN Kanghui;LI Xuwei;LIU Yuanming;ZHENG Xianguang;ZHAO Xuexia;WANG Tao;WANG Zhihua(College of Mechanical Engineering,Taiyuan University of Technology,Taiyuan 030024;Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment,Ministry of Education,Taiyuan 030024;National Key Laboratory of Metal Forming Technology and Heavy Equipment,Taiyuan University of Technology,Taiyuan 030024)

机构地区：[1]太原理工大学机械工程学院,太原030024 [2]先进金属复合材料成形技术与装备教育部工程研究中心,太原030024 [3]太原理工大学金属成形技术与重型装备全国重点实验室,太原030024

出　　处：《机械工程学报》2025年第6期43-52,共10页Journal of Mechanical Engineering

基　　金：国家重点研发计划课题(2021YFB3401000);河北省科技重大专项(23280101Z)资助项目。

摘　　要：针对当前高温H型钢截面尺寸测量需求,设计并搭建一种由多相机和线性激光器构成的高温H型钢截面尺寸测量系统,系统由四个激光三角模型子系统组成,子系统分别测量对应方向的型钢尺寸,采用拼接方式实现型钢截面尺寸测量。采用张正友标定法和平面拟合法分别对子系统进行标定,采用量块进行标定精度评价,试验结果表明,精度可达到±0.05 mm。针对高温H型钢表面氧化铁皮和其他杂质造成的光条凹凸不平和断线问题,提出一种基于局部回归分析和二次拟合修正的光条中心提取算法和模拟卡尺测量的H型钢截面尺寸视觉测量方法,试验结果表明,采用该方法对高温H型钢进行测量,精度可达到±0.5 mm,每幅图像平均处理时间为0.24 s,为实现热轧H型钢生产过程中的闭环控制提供了尺寸数据支撑。Aiming at the current measurement requirements of high temperature H-beam section size,a high temperature H-beam section size measurement system composed of multi-camera and linear laser sensors is designed and built.The system consists of four laser triangle model subsystems.The subsystems measure the size of the steel in the corresponding direction and splicing method is adopted to realize the measurement of the section size of the steel.Zhang’s calibration method and plane fitting method are used to calibrate the subsystem respectively,and the calibration accuracy is evaluated by the gauge block.The experimental results show that the accuracy can reach±0.05 mm.Aiming at the problem of unevenness and disconnection of light stripe caused by oxide scale and other impurities on the surface of high temperature H-beam,a light stripe center extraction algorithm based on local regression analysis and quadratic fitting correction and a visual measurement method of H-beam section size based on analog caliper measurement are proposed.The experimental results show that the accuracy of high temperature H-beam measurement can reach±0.5 mm,and the average processing time of each image is 0.24 s,which provides size data support for the closed-loop control in the production process of hot rolled H-beam.

关 键 词：高温H型钢 截面尺寸测量 标定精度评价 光条中心提取 视觉测量 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]