| 线激光辅助的皮带撕裂视觉检测方法 |
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| 引用本文： | 李海滨,张春明,张元正,徐刚.线激光辅助的皮带撕裂视觉检测方法[J].光学技术,2011,37(4):466-470. |
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| 作者姓名： | 李海滨 张春明 张元正 徐刚 |
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| 作者单位： | 1. 燕山大学工业计算机控制工程河北省重点实验室,河北秦皇岛,066004
2. 河北农业大学机电学院,河北保定,071001 |
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| 基金项目： | 国家自然科学基金资助项目(61007003);教育部博士点基金资助项目(20101333120006);河北省优秀博士后基金资助项目(A1550) |
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| 摘 要： | 为了快速、准确地检测出输送机皮带工作时发生的纵向撕裂事故,提出了一种基于线激光的视觉检测方法.“一”字线激光器向皮带底面投射直线激光条纹,使用CCD相机获取图像并提取出光条中心,通过分析光条中心畸变特征来判断皮带表面是否存在撕裂.首先采用阈值法对激光条纹进行分割；然后在光条区域上利用重心法实现光条中心的粗略提取;最后利...
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| 关 键 词： | 皮带撕裂 机器视觉 光条中心提取 高斯拟合 亚像素 |
A new inspection method for rip of conveyor belt based on line laser stripe |
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| LI Hai-bin
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ZHANG Chun-ming
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ZHANG Yuan-zheng
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XU Gang.A new inspection method for rip of conveyor belt based on line laser stripe[J].Optical Technique,2011,37(4):466-470. |
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| Authors: | LI Hai-bin ZHANG Chun-ming ZHANG Yuan-zheng XU Gang |
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| Institution: | 1 (1.Key Lab of Industrial Computer Control Engineering of Hebei Province, Yanshan University,Qinhuangdao 066004,Hebei,China)(2.Department of Electromechanical Engineering,Agricultural University of Hebei,Baoding 071001,Hebei,China) |
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| Abstract: | A new method based on line laser stripe is proposed to accomplish longitudinal rip of conveyor belt inspection rapidly and accurately.A line laser stripe is generated by laser projected on the surface of conveyor belt,processing the images obtained by the camera to extract the stripe center and using the distortion of the stripe center to judge whether there are some rips on the belt surface or not.Firstly,the initial center of stripe is got with the gray barycenter method.Secondly,the normal direction of the light stripe is calculated with the Bazen's method in the region of interest of the laser stripe.Finally,the sub-pixel value on the normal direction is detected by the use of Gaussian curve fitting method.The belt with a variety of longitudinal rips is used to achieve the experiment.Experimental results show that the proposed method is fast and high precise,the precision is millimeter.This inspection method can effectively resolve the problem of conveyor belt rip inspection to real-time applications. |
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| Keywords: | conveyor belt rip machine vision stripe center extraction Gaussian fitting sub-pixel |
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