Lang Bai, Gang Zheng, Yuan Guo, Mengdi Nie, Xiongxing Zhang, Bin Sun. Analysis and Compensation Method of Temperature Characteristics of High-Precision Frequency-Modulated Continuous Wave Fiber Optic Pressure Sensor[J]. Laser & Optoelectronics Progress, 2021, 58(9): 0928002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 9, 0928002 (2021)
Fig. 1. Pressure sensing head of frequency modulated continuous wave fiber optic pressure sensor
Fig. 2. Relationship between shape variable of diaphragm center and temperature
Fig. 3. Influence of different cavity residual air pressure on central shape variable of diaphragm
Fig. 4. Influence of different temperature on central shape variable of diaphragm
Fig. 5. Characteristic curve of 316L stainless steel cavity structure with temperature change
Fig. 6. Characteristic curve of epoxy resin adhesive with temperature change
Fig. 7. Structure of sensing head of frequency modulated continuous wave fiber optic pressure sensor
Fig. 8. Temperature measurement system of frequency modulated continuous wave fiber optic pressure sensor
Fig. 9. Shape variation of F-P cavity structure with temperature change
Fig. 10. Relationship between length variable of F-P cavity and air pressure of inflatable cavity at different temperatures
Fig. 11. Relationship between temperature and length variable of F-P cavity
Fig. 12. Relationship between pressure value obtained after temperature compensation and experimental pressure value
Fig. 13. Difference between pressure value obtained after temperature compensation and experimental pressure value
Fig. 14. Normal distribution of cavity length random error at 0 kPa pressure after temperature compensation
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