Zhongze XIAN, Jingtao XIN, Qihui LI, Xiang TANG, Mingli DONG. Wide-band high-sensitivity fiber Bragg grating vibration sensor based with hinged complementary structure[J]. Infrared and Laser Engineering, 2024, 53(7): 20240132
- Infrared and Laser Engineering
- Vol. 53, Issue 7, 20240132 (2024)
Fig. 1. Mechanical model diagram of the sensing unit
Fig. 2. Schematic diagram of sensor structure
Fig. 3. The first two orders of the sensor's mode vibration pattern. (a) First-order modal shapes; (b) Second-order modal shapes
Fig. 4. Sensitivity frequency response curve simulation
Fig. 5. Combination sensitivity frequency response curve simulation
Fig. 6. Sensor packaging platform
Fig. 7. Flow chart for packaging sensor. (a) Double hinge assembly; (b) Encapsulation; (c) Outer cover mounting
Fig. 8. Diagram of the sensor FBG reflection spectrum
Fig. 9. Sensor characterisation test system
Fig. 10. Sensitivity frequency characteristic curve of the sensor
Fig. 11. Sensitivity frequency response curve after combination
Fig. 12. Response curve for sensor sensitivity
Fig. 13. Change curve for sensor acceleration amplitude
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Table 1. Sensor parameter table
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Table 2. Main material properties of the sensor
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