基于激光入射光斑识别的非接触式波高测量  

Non-contact wave height measurement method based on laser incident spot recognition

作　　者：吴俊[1,2] 舒岳阶 曹师宝 丘宇杭 WU Jun;SHU Yue-jie;CAO Shi-bao;QIU Yu-hang(Chongqing Southwest Research Institute for Water Transport Engineering,Chongqing Jiaotong University,Chongqing 400016,China;Key Laboratory of Inland Waterway Regulation Engineering Ministry of Transport,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Xike Waterway Engineering Consulting Center,Chongqing 400016,China)

机构地区：[1]重庆交通大学西南水运工程科学研究所,重庆400016 [2]重庆交通大学内河航道整治技术交通行业重点实验室,重庆400074 [3]重庆西科水运工程咨询中心,重庆400016

出　　处：《光学精密工程》2021年第9期2065-2074,共10页Optics and Precision Engineering

基　　金：国家重点研发计划资助项目(No.2016YFC0402006);重庆市基础研究与前沿探索项目(No.cstc2018jcyjAX0345);重庆市教委科学技术研究项目(No.KJQN201800739)。

摘　　要：为了实现水工物理模型实验中波高这一重要参量的高精度测量,提出了一种基于激光入射光斑识别的非接触式波高测量方法。构建了波高测量装置的图像成像几何关系模型,研究了波高测量装置主要参数的确定方法。根据激光入水二值化图像特征构造了激光入水特征模板,提出了激光光斑动态跟踪算法。最后,根据确定的结构参数与图像传感器参数,搭建了实验装置,对波高传感器进行了标定,并利用标定曲线对电动位移平台模拟的波浪进行了测量。实验结果表明:实测位移与电动位移平台设定的位移基本吻合,最大误差仅为0.65 mm。该方法基本满足水工物理模型实验波高测量的高精度、非接触与高动态性等需求。To achieve high-precision,non-contact wave height measurements,a non-contact wave height measurement method based on laser-incoming spot recognition was proposed.First,the image geometry model of the wave height measurement device was constructed,and the primary parameter determination method of the wave height measurement device was studied.Then,according to the characteristics of the binary image of a laser in water,a laser-water entry feature template was constructed,and a dynamic laser spot tracking algorithm was proposed.Finally,according to the determined structural and image sensor pa⁃rameters,an experimental device was constructed,the wave-height sensor was rated,and the wave simulated by the electric displacement platform was measured using the calibration curve.The experimental re⁃sults show that the measured displacement is identical to the set displacement of the electric displacement platform,with a maximum error of only 0.65 mm,essentially meeting the high precision,non-contact,and high dynamic measurement requirements of hydro-physical model experiment waves.

关 键 词：激光测量 水工物理模型 激光光斑 二值化图像 图像识别 波高测量 

分 类 号：U653.2[交通运输工程—港口、海岸及近海工程] TN248[交通运输工程—船舶与海洋工程]