Wei He, Cui Zhang, Xinglin Tong, Chengwei Deng, Fang Liu, Yuan Tao, Yan Mao. Wirelessly Coupled Fiber-Bragg-Grating Sensor for Bushing-Temperature Monitoring[J]. Acta Optica Sinica, 2019, 39(9): 0906008
- Acta Optica Sinica
- Vol. 39, Issue 9, 0906008 (2019)
Fig. 1. Principle diagram of FBG sensing
Fig. 2. Encapsulation structure diagram of FBG sensor
Fig. 3. Calibration fitting curves of sensors
Fig. 4. Diagram of wirelessly coupled demodulation
Fig. 5. Axial spacing versus insertion loss
Fig. 6. Horizontal spacing versus insertion loss
Fig. 7. Angle deviation versus insertion loss
Fig. 8. Center wavelength or lateral spacing versus insertion loss of sensor 1
Fig. 9. Center wavelength versus insertion loss of sensor
Fig. 10. Wireless coupling system diagram of petrochemical site
Fig. 11. Installation layout diagram of FBG sensor
Fig. 12. Center wavelength experimental data of senor 1
Fig. 13. Temperature and its error bar diagram of bushing
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Table 1. Parameters of fitting curves
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Table 2. Distribution table of different temperature differences
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