作者：宋振¹, 裴润有², 张洪军¹, 贾春虎², 李汲峰², 宏岩², 李东升¹

作者单位：1. 中国计量学院, 浙江杭州 310018;
2. 长庆油田公司技术监测中心, 陕西西安 710021

关键词：立式罐; 三维激光扫描法; 容量计量;

摘要：

研究基于三维激光扫描技术的立式罐容量计量方法,利用三维激光扫描仪获取立式罐表面点云数据,采用小圆柱体积叠加的容量计算模型计算容积并获得容积表,基于点云分析计算底部排量和罐体倾斜度进行容积修正。在测试试验中,以一个5 000 m3的立式罐为测试对象,对比三维激光扫描法与全站仪法测得的半径值和容积表数据后,发现内测法半径最大偏差为1.6 mm,外测法半径最大偏差为8.2 mm,容积偏差均在1以内,从而验证三维激光扫描法的可行性和准确性。测试试验还显示这种方法可大幅度提高立式罐容量计量的工作效率。

Research on 3D laser scanning method for vertical tank capacity measurement

SONG Zhen¹, PEI Run-you², ZHANG Hong-jun¹, JIA Chun-hu², LI Ji-feng², HONG Yan², LI Dong-sheng¹

1. China Jiliang University, Hangzhou 310018, China;
2. Technical Monitoring Center of Changqing Oilfield Company, Xi'an 710021, China

Abstract: A volume measurement method for vertical cylindrical metal tanks based on 3D laser scanning technology was investigated. In this method,vertical tank surface point cloud data were obtained by a 3D laser scanner,and the volume of the tank was calculated by a circular cylinder volume superposition. Then,the volume form of the tank can be easily obtained. Volume correction for tank bottom capacity and tank body tilt is taken based on the point cloud analysis. A vertical tank of 5 000 m³ was selected as an object being measured. Comparing of the radius and volume measured by 3D laser scanning and electronic total station methods,it's found that the maximum radius deviation is 1.6 mm for inside measurement and 8.2 mm for outside measurement,volume deviation is less than 1‰. The results show the good reliability and accuracy of 3D laser scanning method. It's also found that the 3D laser scanning method can substantially increase the measurement efficiency.

Keywords: vertical tank; 3D laser scanning method; capacity measurement

2014, 40(6): 22-26  收稿日期: 2014-2-3;收到修改稿日期: 2014-4-12

基金项目: 国家质检总局公益性行业科研专项(201210106)

作者简介: 宋振(1987-),男,山东济宁市人,硕士研究生,专业方向为容量计量科学技术。

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