Huizhi Zhao, Mingli Dong, Jingtao Xin, Yanming Song, Xu Zhang, Jun Wu. Structural Design and Investigation of Micro-Broadband Fiber Bragg Grating Vibration Sensor[J]. Laser & Optoelectronics Progress, 2024, 61(9): 0906007
- Laser & Optoelectronics Progress
- Vol. 61, Issue 9, 0906007 (2024)
Fig. 1. Schematic diagram of acceleration sensor structure
Fig. 2. Mechanical analysis diagram of acceleration sensor
Fig. 3. Variation curves of d with q and p. (a) Variation curve of d with q; (b) variation curve of d with p
Fig. 4. Variation curves of S and f with d. (a) Different hole diameters; (b) different hole positions
Fig. 5. Sensor stress profile. (a) Mass block not hollow; (b) mass block hollow
Fig. 6. Amplitude-frequency response simulation curve
Fig. 7. Spectra of FBG
Fig. 8. Pictorial diagram of the sensor
Fig. 9. Vibration signal calibration system
Fig. 10. Variation curve of wavelength change with excitation frequency
Fig. 11. Time-domain/frequency-domain characteristics of the sensor under 1g and 100 Hz excitation. (a) Time-domain response characteristics; (b) frequency-domain response characteristics
Fig. 12. Variation curve of Sensitivity
Fig. 13. Variation curve of acceleration amplitude with time of sensor
Fig. 14. Time-domain characteristic curve of main axis direction and cross axis direction
Fig. 15. Repeatability test
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Table 1. Design parameters of the sensor
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Table 2. Sensor parameters of different structures
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Table 3. Research status of fiber grating vibration sensor
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