Application of a self-compensation mechanism to a rotary-laser scanning measurement system

Guo, Shilin; Lin, Jiarui; Ren, Yongjie; Shi, Shendong; Zhu, Jigui

doi:10.1088/1361-6501/aa8749

Cited by 11 publications

(12 citation statements)

References 14 publications

(12 reference statements)

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“…In addition, a concrete realization scheme and calibration method for wMPSs were proposed by Zhu et al [11][12][13]. Meanwhile, the influence of wMPS network layout on location error was investigated by Zhi et al [14], and the hardware and measurement algorithm employed in wMPSs have been optimized by Lao et al [15,16].…”

Section: Introductionmentioning

confidence: 99%

Calibration of Large-Scale Spatial Positioning Systems Based on Photoelectric Scanning Angle Measurements and Spatial Resection in Conjunction with an External Receiver Array

Xiong

Bai

2020

Applied Sciences

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Positioning systems providing high-precision real-time measurements over very large spatial scales are urgently required for large-scale industrial manufacturing applications. While large-scale positioning systems (LSPSs) employing laser transmitter stations have been employed in engineering practice, the introduction of an LSPS into an existing industrial manufacturing setting must first solve the problems of docking with existing control points and external parameter calibration. However, calibrating the external parameters of a measurement system is very difficult under extreme and complicated working conditions due to the limited visibility of transmitter stations and the measurement distances involved. This problem is addressed in this paper by proposing a single transmitter station calibration method based on a photoelectric scanning multi-angle resection positioning model that combines photoelectric scanning angle measurements and spatial resection in conjunction with an external receiver array. Positioning information is obtained by solving the unknown parameters of the model according to a nonlinear optimization approach using the Levenberg–Marquardt least-squares fitting algorithm. The feasibility and spatial positioning accuracy of the proposed method are verified experimentally. The experimental results demonstrate that the principles of the proposed method are correct, and the method can achieve millimeter measurement accuracy, which meets the requirements of measurement tasks in engineering applications.

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Section: Introductionmentioning

confidence: 99%

Calibration of Large-Scale Spatial Positioning Systems Based on Photoelectric Scanning Angle Measurements and Spatial Resection in Conjunction with an External Receiver Array

Xiong

Bai

2020

Applied Sciences

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“…Without the restrictions on image resolution and hardware processing, rotary-laser scanning systems were usually featured with fast scanning speed, longer working distance, and higher spatial resolution. It has been successfully demonstrated in several high-efficiency equipments, such as the Structural Health Monitoring system (SHM) [ 14 , 15 ], HTC Vive [ 16 , 17 , 18 ], indoor Global Position System (iGPS) [ 19 , 20 ], and workspace Measuring and Positioning System (wMPS) [ 21 , 22 , 23 , 24 ]. SHM makes full use of rotary-laser scanning technology to determine three-dimensional (3D) coordinates of an observed object efficiently.…”

Section: Introductionmentioning

confidence: 99%

“…Taking the wMPS system, for example, the working distance of a single transmitter is up to 25 m, with a scanning coverage range of 360° horizontal angles and ±22.5° vertical angles. It supports multi-targets measurement with measuring frequency up to 30 Hz [ 23 , 24 ]. Compared with visual measurement, it has significant advantages in range, accuracy, and efficiency, so that it is more suitable for on-site positioning and guidance.…”

Section: Introductionmentioning

confidence: 99%

Automatic Guidance Method for Laser Tracker Based on Rotary-Laser Scanning Angle Measurement

Yang

Pan

Lin

et al. 2020

Sensors

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Laser-tracking measurement systems (laser tracker) have been playing a critical role in large-scale 3D high-precision coordinate measurement. However, the existing visual guidance of laser trackers is still limited by the disadvantages of operator-dependence, small-angle view field, time-consuming laser-guided process. This paper presents an automatic guidance method for laser trackers based on the rotary-laser scanning angle measurement technology. In this method, a special target consisting of six photoelectric receivers and a retroreflector is integrated into the rotary-laser scanning transmitter’ coordinate systems. Real-time constraints calculated by the proposed method would provide the coordinates of the target in a laser tracker coordinates system for guidance. Finally, the experimental results verified the automatic re-establish of sightline can be realized in horizontal 360° angle field within tens of arc-seconds, and this method is robust against the fast movement of the target.

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“…In recent years, the team at Tianjin University developed a space coordinate measurement technology called the workspace measuring and positioning system (wMPS) [27][28][29][30][31][32]. The system's characteristics include high measurement precision, real-time measurements, and multi-task synchronization measurements.…”

Section: Introductionmentioning

confidence: 99%

Potential of Workshop Measurement Positioning System to Measure Oscillation Frequencies of Rigid Structures

2019

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A workshop measuring and positioning system (wMPS) is a large three-dimensional (3D) coordinate-measurement system based on optoelectronic scanning. It is capable of large-range coverage, high measurement accuracy and frequency, and multi-task synchronous measurement. Existing geodetic instruments cannot measure the intrinsic parameters of strong rigid structures. Thus, this study conducted experiments to explore the feasibility of the wMPS to measure the intrinsic parameters of rigid structures. A test bed was established using a reverse-engineering method to simulate the oscillation frequency of the structure. Displacement data, which changed with the time series through the fast Fourier transformation method, were analyzed to determine the feasibility and range of the wMPS in measuring intrinsic parameters of the structure. The experimental results demonstrated that the wMPS can measure the vibrational frequency up to 9 Hz with a 3-mm amplitude and up to 4 Hz with a 30-mm amplitude.

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Application of a self-compensation mechanism to a rotary-laser scanning measurement system

Cited by 11 publications

References 14 publications

Calibration of Large-Scale Spatial Positioning Systems Based on Photoelectric Scanning Angle Measurements and Spatial Resection in Conjunction with an External Receiver Array

Calibration of Large-Scale Spatial Positioning Systems Based on Photoelectric Scanning Angle Measurements and Spatial Resection in Conjunction with an External Receiver Array

Automatic Guidance Method for Laser Tracker Based on Rotary-Laser Scanning Angle Measurement

Potential of Workshop Measurement Positioning System to Measure Oscillation Frequencies of Rigid Structures

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