Acta Photonica Sinica, Volume. 53, Issue 3, 0312003(2024)
Invention Relates to an Automatic Coordinate System Calibration Method Applied to a Large Size Measurement System
Figures & Tables(17)
Fig. 1. Schematic diagram of measurement units measuring each other
Fig. 6. Schematic diagram of mutual scan measurement at transmitter station
Fig. 8. Comparison diagram of length measurement error compared with standard method
Fig. 9. Comparison diagram of LM optimization method and Gaussian Newton optimization method
Fig. 14. Self-calibration method using inter-scanning technique and ultrasonic ranging
Table 1. Internal parameters of laser transmitters
View tableView in ArticleTable 1. Internal parameters of laser transmitters
Transmitter Plane A B C D 1 1 0.017 681 453 -0.428 387 511 -0.736 372 876 0.000 000 000 2 0.964 419 228 0.010 089 585 -0.520 140 008 0.000 000 000 2 1 -0.331 011 200 -0.800 227 994 -0.432 092 864 0.000 000 000 2 0.758 123 749 -0.309 036 328 -0.542 004 991 0.000 000 000
Table 2. Scan the target coordinates at the laser transmitters
View tableView in ArticleTable 2. Scan the target coordinates at the laser transmitters
X/mm Y/mm Z/mm 886.656 456 465 598 0.256 453 156 52 10.657 852 232 12 6.541 154 515 152 801.325 645 154 59 28.514 145 145 141 2.064 151 545 125 817.125 461 256 451 6.456 541 514 554 869.456 415 415 454 2.415 615 445 145 29.564 584 545 154
Table 3. Comparison of the standard ruler method and the method in this paper
View tableView in ArticleTable 3. Comparison of the standard ruler method and the method in this paper
Standard ruler method Proposed method Calibration procedure After the transmitters are secured， the standard ruler is placed in at least 6 positions， each of which needs to maintain a vertical attitude After fixing the transmitters， the transmitters are automatically calibrated by scanning each other's mark targets Time-consuming About 50 min About 5 min Ways to add
transmitters
Re-calibration Automatic Networking Mechanism Average ranging accuracy Within 0.2 mm/m Within 0.46 mm/m
Tools
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Xiaohui ZHANG, Jiaying ZHANG, Qing LIU, Jintong LI, Qihang YANG, Jiaming LV, Ting SHANG, Pengfei CHENG. Invention Relates to an Automatic Coordinate System Calibration Method Applied to a Large Size Measurement System[J]. Acta Photonica Sinica, 2024, 53(3): 0312003
Paper Information
Category: Instrumentation, Measurement and Metrology
Received: Aug. 21, 2023
Accepted: Oct. 16, 2023
Published Online: May. 16, 2024
The Author Email: Qing LIU (itcliuq@xaut.edu.cn)
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