| 基于激光定标测距的连铸钢包壁厚测量方法 |
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| 引用本文： | 刘军,吴新华,孟宪武,方江雄,侯庆明,赵鹏,杨凤.基于激光定标测距的连铸钢包壁厚测量方法[J].计量学报,2019,40(4):557-562. |
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| 作者姓名： | 刘军 吴新华 孟宪武 方江雄 侯庆明 赵鹏 杨凤 |
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| 作者单位： | 东华理工大学核技术应用教育部工程研究中心,江西南昌330013;东华理工大学地球物理与测控技术学院,江西南昌330013;东华理工大学地球物理与测控技术学院,江西南昌,330013 |
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| 基金项目： | 国家自然科学基金(51304050,61866001); 江西省自然科学基金(20171BAB202028,20161BBE53006); 东华理工大学核技术应用教育部工程研究中心开放基金(HJSJYB2016-9,HJSJYB2016-1) |
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| 摘 要： | 提出一种激光定位测距的钢包壁厚测量方法。先利用定位激光确定被测钢包所处的空间坐标,再由执行机构带动测量激光扫描钢包内壁面,根据空间坐标关系,将钢包内壁面各被测点数据进行三维映射为钢包壁厚数值,最后将映射后的钢包壁厚数值与钢包初始状态对比,从而得出钢包内壁的厚度分布。现场实验结果表明:该方法能够有效克服测量环境与钢包位置不固定的影响,实现钢包壁厚的可靠测量,壁厚测量最大误差为5.2mm,最小误差为2.6mm,平均误差为3.6mm。
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| 关 键 词： | 计量学 壁厚测量 连铸钢包 激光定标 坐标转换 三维重建 映射 |
| 收稿时间： | 2018-07-20 |
Solution to Wall Thickness of Continuous Casting LadleBased on Laser Positioning and Ranging |
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| LIU Jun,WU Xin-hua,MENG Xian-wu,FANG Jiang-xiong,HOU Qing-ming,ZHAO Peng,YANG Feng.Solution to Wall Thickness of Continuous Casting LadleBased on Laser Positioning and Ranging[J].Acta Metrologica Sinica,2019,40(4):557-562. |
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| Authors: | LIU Jun WU Xin-hua MENG Xian-wu FANG Jiang-xiong HOU Qing-ming ZHAO Peng YANG Feng |
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| Affiliation: | 1. Engineering Research Center of Nuclear Technology Application, Ministry of Education, East China University of Technology, Nanchang, Jiangxi 330013, China
2. School of Geophysics and Measurement-Control Technology, East China University of Technology, Nanchang, Jiangxi 330013, China |
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| Abstract: | A method to measure wall thickness of continuous casting ladle based on laser positioning and ranging is proposed. Firstly, positioning lasers are used to detect the spatial coordinates of the measured ladle. Secondly, the inner surface of the ladle is scanned by measuring laser driven by a rotary platform. According to the spatial coordinate transformation, the data of the measured points on the inner surface of the ladle are mapped to the wall thickness of the ladle. Finally, the thickness distribution of the inner wall of the ladle is obtained by comparing wall thickness with the standard initial data of the ladle. After test in the metallurgy filed, it shows that the method can measure the thickness of ladle wall accurately, the maximum measuring error is 5.2 mm, the minimal error is 2.6 mm, and the average error comes to 3.6 mm. |
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| Keywords: | metrology wall thickness measurement continuous casting ladle laser calibration coordinate transformation three-dimensional reconstruction mapping |
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