Acta Photonica Sinica, Volume. 51, Issue 6, 0606004(2022)
In-situ Calibration Method of Fiber Grating Strain Sensor Based on Data Sequence Matching and Statistical Analysis
Figures & Tables(11)
Fig. 1. Principle of RS sensor in-situ calibration model based on resistance strain gauge
Fig. 5. Amplitude comparison between resistance strain gauge and FBG strain sensor
Fig. 7. Matching results of 1529 nm wavelength FBG strain sensor and resistance strain gauge at the same sampling rate
Fig. 8. Waveforms of RS sensor and SBC sensor with wavelength of 1529 nm at the same sampling rate
Fig. 9. Static data fitting of FBG strain sensors with wavelength of 1 529 nm and 1 547 nm
Table 1. Calibration coefficient of FBG strain sensor sensitivity at 1529 nm
View tableView in ArticleTable 1. Calibration coefficient of FBG strain sensor sensitivity at 1529 nm
Parameter Value Sensitivity calibration coefficient/（pm·με-1） 1.16 1.15 1.16 1.16 1.16 1.17 Static sensitivity coefficient /（pm·με-1） 1.16 1.17 1.17 1.16 1.17 1.16 Matching coefficient 0.996 0.999 0.983 0.965 0.987 0.978
Table 2. Calibration coefficient of FBG strain sensor sensitivity at 1547 nm
View tableView in ArticleTable 2. Calibration coefficient of FBG strain sensor sensitivity at 1547 nm
Parameter Value Sensitivity calibration coefficient/（pm·με-1） 1.13 1.13 1.14 1.13 1.14 1.14 Static sensitivity coefficient /（pm·με-1） 1.13 1.14 1.14 1.13 1.13 1.13 Matching coefficient 0.996 0.999 0.982 0.963 0.988 0.978
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Jingyi CAI, Jieya WU, Chunliu ZHAO, Juan KANG, Huaping GONG. In-situ Calibration Method of Fiber Grating Strain Sensor Based on Data Sequence Matching and Statistical Analysis[J]. Acta Photonica Sinica, 2022, 51(6): 0606004
Paper Information
Category: Fiber Optics and Optical Communications
Received: Jan. 5, 2022
Accepted: Mar. 11, 2022
Published Online: Sep. 23, 2022
The Author Email: GONG Huaping (gonghp@163.com)
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