Abstract:A measurement method of optical fiber geometric parameters based on machine vision is studied. This method uses digital image processing algorithm. First, read the image of fiber end face and use Deriche edge detection algorithm to segment the image. Then, the effective edges are extracted and merged by using the algorithm of removing false edges. Finally, the geometric parameters of fiber end face are measured by curve fitting. The experimental results show that the method is simple to operate, low algorithm complexity, high fitting accuracy of optical fiber endface edge, fast data detection speed, and can accurately and efficiently detect the geometric parameters of optical fiber end face. The repeated measurement accuracy of coating layer diameter can reach 0.021 μm, and the repeated measurement accuracy of coating layer out of roundness can reach 0.043%.
金柯,陈晓荣. 基于机器视觉的光纤端面几何参数测量研究[J]. 计量学报, 2023, 44(2): 165-170.
JIN Ke,CHEN Xiao-rong. Research on Measurement of Geometric Parameters of Optical Fiber Endface Based on Machine Vision. Acta Metrologica Sinica, 2023, 44(2): 165-170.
Chen W, Yuan J, Zuo-Wei H E, et al. The Research Progress of High-end Optical Fiber Technologies for Large-capacity Communication[J]. Study on Optical Communications, 2017,1: 27-29+33.
Ouyang C. Measurement of Optical Fiber Geometric Parameters Based on Cubic Spline Function Fitting Method[J]. Digital Technology and Application, 2020, 38(12): 50-52.
Gui X, Li Z Y, Wang H M, et al. Review of Distributed Optical Fiber Sensing Technology and Application Based on Large-Scale Grating Array Fiber[J]. Journal of Applied Sciences, 2021, 39(5): 747-776.
Kong M, Xu Z L, Xu Y, et al. Quality Inspection of Overall Bolt Dimension with Actual Edge Profile[J]. Acta Metrologica Sinica, 2021, 42(6): 724-730.
[14]
Sinué Ontiveros, Roberto Jiménez, José A Yagüe-Fabra, et al. Analysis of Surface Extraction Methods Based on Gradient Operators for Computed Tomography in Metrology Applications. [J]. Materials, 2018, 11(8): 1461.
Zhou X. Rapid Detection for small Module Gear[J]. Techniques of Automation and Applications, 2017, 36(10): 104-107, 127.
Lu P, Mihailov S J, Ding H, et al. Plane-by-plane inscription of grating structures in optical fibers[C]// International Conference on Optical Fibre Sensors, Jeju, Korea, 2017.
Pang Y L, Liu J, Wang L. BCF-92 POF end face out-of-roundness measurement and application[J]. Optical Communication Technology, 2020, 44(7): 59-62.
Liu Y Z, Gao H T, Cheng Y B, et al. Measurement of Micro Transverse Spacing Using Single Frequency-stabilized Laser[J]. Acta Metrologica Sinica, 2021, 42(2): 144-149.
Li Y M, Zheng G, Tu J K, et al. Measurement of optical fiber geometry with arbitrary ellipse curve fitting[J]. Opto-Electronic Engineering, 2019, 46(5): 32-39.
Xing X L, Gan W B, Jiang C G. Technology of Size Detection of Air Rivets Based on Machine Vision[J]. Acta Metrologica Sinica, 2020, 41(5): 518-523.
[13]
许海涛. 焊接机器人焊缝识别跟踪技术研究[D]. 南京: 东南大学, 2019.
Liu B, Dong Z T, Hu C, et al. Measurement Method of Screen Printing Template Size Based on Machine Vision[J]. Acta Metrologica Sinica, 2021, 42(2): 150-156.
Kong S J, Huang X, Zhou K, et al. Detection method of addendum circle of gear structure based on machine vision[J]. Chinese Journal of Scientific Instrument, 2021, 42(4): 247-255.