基于多线激光的大尺寸水冷板高度测量系统  

Large-size Water-cooled Plate Height Measurement System Based on Multi-line Laser

作　　者：徐思源 班兆军 XU Siyuan;BAN Zhaojun(School of Biological and Chemical Engineering,Zhejiang University of Science and Technology,Zhejiang Provincial Key Laboratory of Chemical and Biological Processing Technology of Farm Products,Zhejiang Provincial Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacturing)

机构地区：[1]浙江科技学院生物与化学工程学院,浙江省农产品化学与生物加工技术重点实验室,浙江省农业生物资源生化制造协同创新中心

出　　处：《仪表技术与传感器》2024年第3期57-61,95,共6页Instrument Technique and Sensor

基　　金：浙江省尖兵领雁研发攻关计划项目(2022C04039);浙江科技学院研究生教改项目(2020yjsjg03)。

摘　　要：为了满足现代工业非接触、高精度以及快速对大尺寸工件表面高度测量的需求,设计了一种基于多线激光的水冷板高度测量系统,该系统由运动控制、图像采集和图像处理3部分组成。首先对系统的硬件进行了选型;其次,根据线激光获取的点云数据,提出了水冷板高度测量方法;为了减少干扰点云的影响,采用高斯滤波对模板匹配后的点云去噪,并基于统计的方法筛选参与高度计算的点云数据。实验数据表明:系统重复测量误差小于30μm,测量时间少于1 min,满足企业生产需求。In order to meet the needs of modern industrial non-contact,high precision and fast surface height measurement of large workpieces,a water-cooled plate height measurement system based on multi-line laser was designed,which consisted of three parts:motion control,image acquisition and image processing.Firstly,the hardware of the system was selected.Secondly,according to the point cloud data obtained by the line laser,a water-cooled plate height measurement method was proposed.In order to reduce the influence of interfering point clouds,Gaussian filters were used to denoise the point cloud after template matching,and the point cloud data participating in the height calculation were screened based on statistical methods.The experimental data show that the accuracy of the repeated measurement error of the system is less than 30μm,and the measurement time is less than 1 minute,which meets the production needs of enterprises.

关 键 词：机器视觉 水冷板 线激光 高度测量 模板匹配 点云分割 

分 类 号：TH715[机械工程—测试计量技术及仪器]