降雨量液位高视觉测量系统误差分析  

Error Analysis for Rainfall Liquid-Level Vision Measurement System

作　　者：钟球盛[1] 周华[1] 谢宏威[2] 苏杰仁[1] ZHONG Qiu-sheng;ZHOU Hua;XIE Hong-wei;SU Jie-ren(Guangzhou Panyu Polytechnic,Guangzhou 511493,China;Guangzhou University,Guangzhou 510006,China)

机构地区：[1]广州番禺职业技术学院,广东广州511493 [2]广州大学,广东广州510006

出　　处：《机电工程技术》2017年第6期23-26,共4页Mechanical & Electrical Engineering Technology

基　　金：广东省自然科学基金博士启动基金项目(编号:2015A030310308);广东省科技计划项目(编号:2016A010102021);广州市属高校科研项目(编号:1201630529)

摘　　要：为了提高基于机器视觉的液位高度测量系统的精度,采用理论分析和实验验证的方法,对相机与测量对象在不同姿态下的误差种类进行了研究。在简述系统结构与算法原理的基础上,深入研究系统原理、制造、安装、算法、物理现象、以及空间姿态偏差等所产生误差的机理。通过分析并构建降雨量液位高度与测量误差的关系表达式,并进行了实验验证与分析。实验结果表明所提出液位高度测量系统的重复测量精度高于0.1 mm。To improve the precision of liquid level vision measurement system,error analysis for rainfall liquid-level measurement was carried out based on the vision system.In this paper,the error of the measured object and camera was analyzed and verified under different postures.The error had a relationship to system principle,manufacture,installation,algorithm,physical phenomena and postures.By the construction of3D space postures,the subsection calibration method was proposed to limit the errors.Experimental results show that the repeated measurement precision of the measurement system was higher than0.1mm.

关 键 词：液位测量 机器视觉 误差分析 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]