非重叠视场结构光传感网的空间坐标精密测量方法研究

Large-scale space coordinate measurement is not only the basic supporting technology of equipment manufacturing industry, but also the hot and difficult problem of precision measurement technology. With the continuous upgrading of heavy equipment products, the problem of measuring the shape and size of large-scale complex objects has become a bottleneck restricting the development and technological progress of equipment. However, the Structured light measurement technology based on sensor network is an effective way to solve the real-time measurement of large complex objects. Focusing on the major strategic needs of our country, this project aims at the real-time measurement challenges of large-scale objects represented by key technical equipment, and will explore the precise measurement method of space coordinate based on network. Besides that, the mechanism of measurement error of structured light sensor will be revealed, and the relationship between the whole data of the network and the local data of the sensor will be discussed. After that, a three-dimensional coordinate precision measurement system based on structured light sensor network will be set up, which focuses on solving some key scientific problems, including non-metric correction based on complete distortion mathematical model; The nonlinear phase error modeling of projector in complex environment and accurate solution method for spatial relationship of sensors having non-overlapping field of view based on flexible target. Research of the project will strive to achieve a number of high-level, innovative theoretical research results, and carry out experimental verification. It will provide new methods and technical support for high-precision measurement of large-scale objects, and play a positive role in promoting the development of equipment manufacturing industry for our country.

大尺度空间坐标测量是装备制造业的基础支撑技术，也是精密测量技术的热点和难点问题。随着重型装备不断升级换代，大尺度复杂物体形貌尺寸测量问题已成为制约装备研制与技术进步的瓶颈。基于传感网的结构光测量技术是解决大型复杂物体现场实时测量的有效途径。本项目紧密围绕我国重大战略需求，瞄准当前以重大技术装备为代表的大尺寸物体现场实时测量挑战性难题，探索空间坐标网络化精密测量方法，揭示结构光传感器测量误差产生机理，探明网络整体数据与传感器局部数据之间关系，建立一套基于结构光传感网的三维坐标精密测量系统，重点解决所遇到的一些关键科学问题，如：基于完整畸变数学模型的非量测校正、复杂环境下投影仪非线性相位误差建模以及基于柔性靶的非重叠视场传感器空间关系精确求解等。力争取得一批高水平、创新性理论研究成果，并开展实验验证。为实现大尺寸物体现场高精度测量提供新方法和技术支撑，对促进我国装备制造行业的发展产生积极作用。

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