Xiang Tang, Jun Wu, Qihui Li, Jingtao Xin, Mingli Dong. Research on miniature three-axis vibration sensor based on FBG[J]. Infrared and Laser Engineering, 2024, 53(2): 20230518
- Infrared and Laser Engineering
- Vol. 53, Issue 2, 20230518 (2024)
Fig. 1. Schematic diagram of the structure of the sensor
Fig. 2. Diagram of the mechanical analysis of the sensor
Fig. 3. Sensor mode diagram
Fig. 4. Sensor stress profile plot
Fig. 5. Amplitude-frequency response curve
Fig. 6. Microscopic imaging packaging system
Fig. 7. Sensor packaging process diagram. (a) Group assembly part; (b) Packaging optical fiber; (c) Install the shell
Fig. 8. Schematic diagram of sensor testing system
Fig. 9. Curve of wavelength variation with excitation frequency in the Y axis. (a) Entirety; (b) 0-1200 Hz
Fig. 10. Curve of wavelength variation with excitation frequency in the X axis. (a) Entirety; (b) 0-1200 Hz
Fig. 11. Curve of wavelength variation with excitation frequency in the Z axis. (a) Entirety; (b) 0-1200 Hz
Fig. 12. Variation curve of sensitivity with acceleration
Fig. 13. Sensitivity linear fitting of time-domain characteristic curves in working and cross directions
Fig. 14. Impact response curve. (a) Time domain curve; (b) Frequency domain curve
Fig. 15. Repeatability test
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Table 1. Optical fiber and sensor structure parameters
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