Ms. Zhiting Jia Profile

Zhiting Jia

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Proceedings Article | 30 April 2024 Paper

A measurement method for straightness of two-dimensional long guide rails

Rongting Zhao, Ziyue Zhao, Jiansu Qu, Zhiting Jia, Siyuan Gong, Qiandi Liu

Proceedings Volume 13153, 1315313 (2024) https://doi.org/10.1117/12.3018552

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A real-time straightness measurement method for two-dimensional long guide rails is introduced based on the current measurement principle and status, combined with the requirements of existing work and the characteristics and performance of laser geometry measurement systems. The system uses a collimated laser beam as a reference line and outputs displacement values instead of angle values using coordinate data obtained from a dual two-dimensional PSD. Therefore, real-time measurement of intermittent guide rail straightness can be achieved. In addition, the system only has an output optical path and no return optical path, making the adjustment of the optical path much easier than that of a laser interferometer. When the 2D PSD fixed on the rail slider moves along the rail, the position data of the light spot will be transmitted to the terminal through the Bluetooth module. After inputting the position information, the software will automatically draw the 2D straightness curve of the rail. The reliability of this method was verified through experiments on a high-precision displacement platform. At the same time, while meeting the accuracy requirements, it is simple and practical, improving measurement efficiency, and providing a new way to improve measurement accuracy.

Proceedings Article | 30 April 2024 Paper

Study of a standardizer suitable for on-site verification of laser scanners

Ziyue Zhao, Xiaojun Wang, Lei Qiao, Zhiting Jia, Siyuan Gong

Proceedings Volume 13153, 131530I (2024) https://doi.org/10.1117/12.3015338

KEYWORDS: Laser scanners, Calibration, Point clouds, Environmental sensing, Optical spheres, Surface finishing, Reflection, Error analysis, Design and modelling, Color difference

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Laser scanners could reflect the surface topography of the measured object through the measurement of massive point cloud data, possessing the characteristics of high accuracy and high efficiency, which are currently widely used in the measurement of parts and components of aircrafts, aero-engines, ships, and other machineries. The accuracy and reliability of data from laser scanners under site conditions for engineering applications has been an urgent problem to be solved. This paper proposes the design method of the standardizer based on the analysis of the error influencing elements of the laser scanner, which is able to meet the on-site verification requirements of the laser scanner. Considering the size detection error, shape detection error, sphere space error, length measurement error, plane space error five error parameters, and resolution performance parameters of the laser scanner, the standardizer needs to be composed of several concave-convex surfaces, steps, standard spheres, cylindrical tables, square tables, and multi-sized sawtooth surfaces. In order to ensure the accuracy of the standard, a precise assignment method of the standard parameters is proposed to achieve the ultimate traceability of the measurement value of the laser scanner.

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