Mr. Wei Jiang Profile

Wei Jiang

at Chinese Academy of Sciences

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Proceedings Article | 12 January 2018 Paper

A new type industrial total station based on target automatic collimation

Dabao Lao, Weihu Zhou, Rongyi Ji, Dengfeng Dong, Zhi Xiong, Jiang Wei

Proceedings Volume 10621, 1062115 (2018) https://doi.org/10.1117/12.2292423

KEYWORDS: Head, Ranging, Distance measurement, Collimation, Calibration, Phase shift keying, Target recognition, Sensors, Precision measurement, Detection and tracking algorithms

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In the case of industrial field measurement, the present measuring instruments work with manual operation and collimation, which give rise to low efficiency for field measurement. In order to solve the problem, a new type industrial total station is presented in this paper. The new instrument can identify and trace cooperative target automatically, in the mean time, coordinate of the target is measured in real time. For realizing the system, key technology including high precision absolutely distance measurement, small high accuracy angle measurement, target automatic collimation with vision, and quick precise controlling should be worked out. After customized system assemblage and adjustment, the new type industrial total station will be established. As the experiments demonstrated, the coordinate accuracy of the instrument is under 15ppm in the distance of 60m, which proved that the measuring system is feasible. The result showed that the total station can satisfy most industrial field measurement requirements.

Proceedings Article | 24 October 2017 Paper

Study of multi-functional precision optical measuring system for large scale equipment

Wei Jiang, Dabao Lao, Weihu Zhou, Wenying Zhang, Xingjian Jiang, Yongxi Wang

Proceedings Volume 10458, 104580J (2017) https://doi.org/10.1117/12.2283083

KEYWORDS: Geometrical optics, Precision optics, Distance measurement, 3D metrology

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The effective application of high performance measurement technology can greatly improve the large-scale equipment manufacturing ability. Therefore, the geometric parameters measurement, such as size, attitude and position, requires the measurement system with high precision, multi-function, portability and other characteristics. However, the existing measuring instruments, such as laser tracker, total station, photogrammetry system, mostly has single function, station moving and other shortcomings. Laser tracker needs to work with cooperative target, but it can hardly meet the requirement of measurement in extreme environment. Total station is mainly used for outdoor surveying and mapping, it is hard to achieve the demand of accuracy in industrial measurement. Photogrammetry system can achieve a wide range of multi-point measurement, but the measuring range is limited and need to repeatedly move station. The paper presents a non-contact opto-electronic measuring instrument, not only it can work by scanning the measurement path but also measuring the cooperative target by tracking measurement. The system is based on some key technologies, such as absolute distance measurement, two-dimensional angle measurement, automatically target recognition and accurate aiming, precision control, assembly of complex mechanical system and multi-functional 3D visualization software. Among them, the absolute distance measurement module ensures measurement with high accuracy, and the twodimensional angle measuring module provides precision angle measurement. The system is suitable for the case of noncontact measurement of large-scale equipment, it can ensure the quality and performance of large-scale equipment throughout the process of manufacturing and improve the manufacturing ability of large-scale and high-end equipment.

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