Mr. Shendong Shi Profile

Shendong Shi

at Tianjin Univ

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Author

Publications (6)

Proceedings Article | 8 July 2022 Paper

Calibration and measurement space inconsistency analysis for workshop measurement positioning system (wMPS)

Rao Zhang, Shendong Shi, Jiarui Lin, Shuo Yang, Linghui Yang

Proceedings Volume 12282, 122820K (2022) https://doi.org/10.1117/12.2612132

KEYWORDS: Calibration, Measurement devices, Precision measurement

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Proceedings Article | 8 July 2022 Paper

Online time-space calibration method of hybrid wMPS-IMU system

Rui Deng, Linghui Yang, Shendong Shi, Anrui Guo, Yongjie Ren

Proceedings Volume 12282, 122820F (2022) https://doi.org/10.1117/12.2611629

KEYWORDS: Calibration, Transmitters, Receivers, Clocks, Signal processing, Gyroscopes, Sensors, Precision calibration, Motion measurement, Manufacturing

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Limited by the principle of multi-angle intersection measurement, photoelectric scanning measurement systems such as workshop Measuring and Positioning System (wMPS) and indoor Global Positioning System (iGPS) have systematical positioning errors when measuring moving targets. Fusing target movement information can effectively compensate the positioning error introduced by the relative motion between the target and the transmitter. Inertial measurement systems are capable of high-frequency, all-weather and autonomous rotation and acceleration measurement. They have good measurement complementarity with photoelectric scanning measurement systems. Integrating movement information from inertial measurement unit (IMU) is an effective method to improve the dynamic measurement performance. Inertial information fusion needs two preconditions: the first one is clock synchronization and the second one is spatial alignment. In response to the two problems above, we research on wMPS and propose a wMPS-IMU integrated online calibration method. The time offset of the two systems is precisely calibrated by compensating the delay between the wMPS reference clock and the IMU clock. Due to the fact that wMPS receivers and the IMU are connected as a rigid body, the rotation R and the translation T between the wMPS and the IMU can be easily calibrated through a linear estimation method. Our novel method benefits to achieve real-time online temporal and spatial calibration without the help of any external measurement equipment and prior information and significantly improves the applicability of wMPS. Verification experiments were carried out. A three-axis turntable and a linear guide were utilized as the roundness and straightness references. The calibration experiment shows that the calibration accuracy of our method is at the same level as that achieved from the high accuracy coordinate measuring machine (CMM). The precision evaluation experiment shows that the hybrid wMPS-IMU system calibrated through the proposed method has slightly better dynamic performance than that calibrated on a CMM. This method is fully verified to be effective.

Proceedings Article | 12 March 2020 Paper

A multi-dimensional evaluation method of the angle measurement performance for the transmitter

Zhenyu Zhang, Linghui Yang, Jiarui Lin, Shendong Shi, Jigui Zhu

Proceedings Volume 11439, 1143918 (2020) https://doi.org/10.1117/12.2548311

KEYWORDS: Transmitters, Receivers, Signal processing, Manufacturing, Distributed computing

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Proceedings Article | 12 January 2018 Paper

Analysis on the dynamic error for optoelectronic scanning coordinate measurement network

Shendong Shi, Linghui Yang, Jiarui Lin, Siyang Guo, Yongjie Ren

Proceedings Volume 10621, 106210N (2018) https://doi.org/10.1117/12.2296263

KEYWORDS: Transmitters, Receivers, Error analysis, Optoelectronics, Manufacturing, Head, Manufacturing equipment, Photogrammetry, Analytical research, Superposition

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Proceedings Article | 12 January 2018 Paper

Rotating machinery vibration analysis of the rotary-laser scanning measurement system

Siyang Guo, Yongjie Ren, Shendong Shi, Linghui Yang, Jiarui Lin

Proceedings Volume 10621, 106210E (2018) https://doi.org/10.1117/12.2295752

KEYWORDS: Signal processing, Transmitters, Statistical analysis, Signal detection, Transducers, Smoothing, Fourier transforms

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Proceedings Article | 19 September 2013 Paper

The research on calibration methods of dual-CCD laser three-dimensional human face scanning system

Jinjiang Wang, Tianyu Chang, Baozhen Ge, Qingguo Tian, Fengting Yang, Shendong Shi

Proceedings Volume 8905, 890535 (2013) https://doi.org/10.1117/12.2045916

KEYWORDS: Calibration, Cameras, Imaging systems, Distortion, Stereo vision systems, Clouds, Laser scanners, Visual process modeling, 3D acquisition, CCD cameras

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Showing 5 of 6 publications

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