基于点激光的横拉闸门门头运动轨迹检测方法与分析  

Detection method and analysis of trajectory of horizontal pulled gate head based on point laser

作　　者：王化明[1] 周凯强 强斌 马东明 张恒鸿 WANG Huaming;ZHOU Kaiqiang;QIANG Bin;MA Dongming;ZHANG Henghong(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu 210016,China;Mangdao Ship Lock Management Office of Jiangsu Province,Yangzhou,Jiangsu 225026,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]江苏省芒稻船闸管理所,江苏扬州225026

出　　处：《江苏大学学报（自然科学版）》2022年第4期439-445,共7页Journal of Jiangsu University：Natural Science Edition

基　　金：江苏省交通运输科技项目(2017Y10)。

摘　　要：为分析横拉闸门底台车运行磨损导致闸门门头运动轨迹的变化状况,提出一种基于点激光的横拉闸门门头运动轨迹检测方法.对预处理后的图像采用阈值分割与孔洞填充法分割得到图像中激光光斑区域,利用Canny边缘检测和基于Zernike矩亚像素边缘提取算法计算光斑区域的亚像素级边缘,通过光斑质心计算得到光斑中心坐标.采用线性回归分析法分析门头的运动轨迹变化趋势.结果表明,所提出方法可以如实获取并记录横拉闸门门头运动轨迹坐标数据,计算得到门头运动轨迹线性回归模型,分析得到横拉闸门底台车关键部件的磨损情况与磨损规律.To analyze the trajectory change of the gate head caused by the running wear of trolley at the bottom of horizontal pulled gate,a method for detecting the trajectory of gate head of the horizontal pulled gate was proposed based on the point laser.The laser spot area in the preprocessed image was segmented by threshold segmentation and hole filling method.The Canny edge detection and sub⁃pixel edge extraction algorithm based on Zernike moment were used to calculate the sub⁃pixel edge of spot area,and the spot center coordinate was obtained by calculating the spot centroid.The mean value of the data in the same time interval was calculated,and the trend of the trajectory was analyzed by linear regression analysis.The results show that the proposed method can truthfully obtain and record the track coordinate data of the horizontal pulled gate head,and the linear regression model of the gate head trajectory can be calculated to analyze the wear condition and wear law of the key components of the bottom trolley for the horizontal pulled gate.

关 键 词：横拉闸门 轨迹检测 图像处理 亚像素边缘检测 线性回归分析 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]