Infrared and Laser Engineering, Volume. 53, Issue 11, 20240307(2024)
Application of optical fibre sensing in strong vibration environment monitoring system of remote sensing camera
Figures & Tables(20)
Fig. 2. Mechanical analysis diagram of FBG sensor based on elastic sheet structure
Fig. 3. Optical fiber vibration sensor relative calibration test system
Fig. 4. Comparison of simulation results of tensile specimens of different materials
Fig. 5. Single fiber sensor verification test device diagram and results
Fig. 10. Modal analysis and test diagram of remote sensing verification camera
Fig. 11. The output acceleration vs frequency curve of a standard electromagnetic sensor and fiber optic vibration sensor. Standard piezoelectric sensor's sinusoidal vibration of (a1)
Fig. 12. The output frequency & power spectral density relation curve of a standard electromagnetic sensor and fiber optic vibration sensor. Standard piezoelectric sensor's random vibration of (a1)
Fig. 13. Fitting curve of measured acceleration of simulation and two sensors. Sinusoidal vibration of (a)
Fig. 14. Fitting curve of measured acceleration root-mean-square response of simulation and two sensors. Random vibration of (a)
Table 1. Fiber Bragg grating sensor sensitivity
View tableView in ArticleTable 1. Fiber Bragg grating sensor sensitivity
Sensor number Sensitivity/ pm·g−1 Sensor number Sensitivity/ pm·g−1 Sensor number Sensitivity/ pm·g−1 1 58.1 6 59.9 11 59.6 2 58.8 7 58.1 12 59.5 3 60.9 8 59.5 13 61.5 4 61.8 9 60.5 14 61.9 5 60.8 10 58.4 15 61.2
Table 2. Test conditions for sinusoidal vibration
View tableView in ArticleTable 2. Test conditions for sinusoidal vibration
X direction Y direction Z direction Frequency/Hz Vibration level/g Frequency/Hz Vibration level/g Frequency/Hz Vibration level/g 5-10 0.5-2 5-10 0.5-2 5-10 0.375-1.5 10-15 2 10-15 2 10-20 1.5 15-30 3.5 15-25 3.5 20-30 2 30-55 3 25-50 3 30-45 3 55-100 2 50-100 3 45-60 2 60-70 2-3 70-90 3 90-100 3-1.5
Table 3. Test conditions for random vibration
View tableView in ArticleTable 3. Test conditions for random vibration
X direction Y direction Z direction Frequency/Hz Loading level Frequency/Hz Loading level Frequency/Hz Loading level 20-50 +3 dB/oct 20-50 +3 dB/oct 20-60 +9 dB/oct 50-130 0.013 g2/Hz 50-110 0.02 g2/Hz 60-250 0.09 g2/Hz 130-150 0.013-0.025 g2/Hz 110-150 0.02-0.008 g2/Hz 250-400 0.09-0.004 g2/Hz 150-170 0.025 g2/Hz 150-600 0.008 g2/Hz 400-600 0.004 g2/Hz 170-200 0.025-0.005 g2/Hz 600-2 000 −9 dB/oct 600-2 000 −9 dB/oct 200-600 0.005 g2/Hz 600-2 000 −9 dB/oct Total root mean square 2.571 g Total root mean square 2.83 g Total root mean square 4.9 g
Table 4. Main parameters of the material
View tableView in ArticleTable 4. Main parameters of the material
Material Density/ kg·m−3 Elastic modulus/ GPa Poisson ratio Linear expansion coefficient/10−6·℃−1 Zerodur 2530 91 0.24 0.05 SiC 3120 350 0.17 2.2 Fused silica 2200 73 0.16 0.5 Invar 8180 145 0.25 0.05 TC4 4450 110 0.34 9.1 Al 2700 70 0.34 22 XM23 1000 0.002 0.49 236
Table 5. Comparison of peak acceleration of sinusoidal vibration
View tableView in ArticleTable 5. Comparison of peak acceleration of sinusoidal vibration
X direction Y direction Z direction Optical fiber sensor measurement/g Standard piezoelectric sensor measurement/g Relative error Optical fiber sensor measurement/g Standard piezoelectric sensor measurement/g Relative error Optical fiber sensor measurement/g Standard piezoelectric sensor measurement/g Relative error 2.49 2.45 1.63% 2.56 2.49 2.81% 3.4 3.33 2.10% 2.1 2.07 1.45% 2.79 2.75 1.45% 2.49 2.45 1.63% 2.78 2.73 1.83% 2.87 2.78 3.24% 3.28 3.23 1.55% 2.94 2.87 2.44% 2.77 2.72 1.84% 3.25 3.22 0.93% 2.66 2.61 1.92% 2.72 2.66 2.26% 3.23 3.16 2.22% 3.09 3.04 1.64% 3.11 3.07 1.30% 3.26 3.2 1.87% 2.72 2.66 2.26% 2.69 2.63 2.28% 3.21 3.17 1.26% 2.67 2.59 3.09% 2.63 2.58 1.94% 3.2 3.16 1.27% 3.58 3.5 2.29% 3.58 3.47 3.17% 3.24 3.17 2.21% 3.55 3.48 2.01% 3.6 3.51 2.56% 3.24 3.2 1.25% 0.8 0.78 2.56% 0.87 0.85 2.35% 3.2 3.12 2.56% 0.91 0.89 2.25% 0.88 0.87 1.15% 3.16 3.1 1.94% 2.37 2.39 0.84% 2.37 2.34 1.28% 4.13 4 3.25% 2.82 2.77 1.81% 2.72 2.67 1.87% 3.27 3.21 1.87% 2.44 2.42 0.83% 2.4 2.36 1.69% 3.25 3.2 1.56%
Table 6. Results of random vibration test
View tableView in ArticleTable 6. Results of random vibration test
X direction Y direction Z direction FBG sensor measurement of RMS acceleration/g Standard sensor measurement of RMS acceleration/g Relative error FBG sensor measurement of RMS acceleration/g Standard sensor measurement of RMS acceleration/g Relative error FBG sensor measurement of RMS acceleration/g Standard sensor measurement of RMS acceleration/g Relative error 9.80 9.82 0.20% 7.63 7.65 0.26% 15.14 15.15 0.07% 8.63 8.91 3.14% 5.04 5.05 0.20% 13.61 13.62 0.07% 3.50 3.46 1.16% 4.85 4.79 1.25% 13.99 14.01 0.14% 4.11 4.15 0.96% 4.02 4.04 0.50% 8.16 8.25 1.09% 3.32 3.28 1.22% 3.94 3.87 1.81% 9.08 9.14 0.66% 3.83 3.83 0.00 4.53 4.53 0.00 15.60 15.65 0.32% 3.05 3.01 1.33% 4.87 4.92 1.02% 4.95 4.91 0.81% 1.78 1.75 1.71% 2.28 2.23 2.24% 4.79 4.76 0.63% 4.38 4.29 2.10% 4.19 4.13 1.45% 5.01 5.06 0.99% 2.16 2.18 0.92% 2.85 2.80 1.79% 4.83 4.84 0.21% 2.58 2.57 0.39% 3.55 3.49 1.72% 5.01 5.07 1.18% 0.91 0.90 1.11% 1.21 1.24 2.42% 4.77 4.80 0.63% 10.73 10.86 1.20% 11.86 11.86 0.00 18.00 18.00 0.00 11.68 11.73 0.43% 12.11 12.16 0.41% 18.78 18.78 0.00 9.45 9.51 0.63% 15.59 15.61 0.13% 13.18 13.21 0.23
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Pengpeng LIU, Jun WU, Kaicheng DING, Jingtao XIN, Zheng LÜ, Shijun SUN. Application of optical fibre sensing in strong vibration environment monitoring system of remote sensing camera[J]. Infrared and Laser Engineering, 2024, 53(11): 20240307
Paper Information
Category: Optical communication and sensing
Received: Jul. 5, 2024
Accepted: --
Published Online: Dec. 13, 2024
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