Nansu Wang, Chengyu Hong, Dong Su, Yifan Zhang, Jun Wang. Inclinometer Sensors Based on Fiber Bragg Grating and Additive Manufacturing Technology[J]. Laser & Optoelectronics Progress, 2021, 58(9): 0906005
- Laser & Optoelectronics Progress
- Vol. 58, Issue 9, 0906005 (2021)
Fig. 1. Structure of the FBG sensor
Fig. 2. Principle of the FBG sensor
Fig. 3. Inclinometer principle of the FBG sensor
Fig. 4. Schematic diagram of the FBG inclinometer sensor and package structure
Fig. 5. Physical image of the FBG inclinometer sensor. (a) Main part; (b) shell part
Fig. 6. Calibration experiment device of the FBG inclinometer sensor
Fig. 7. FBG sensor wavelength change curve with time. (a) FBG1; (b) FBG2
Fig. 8. Change curve of wavelength difference with time
Fig. 9. Change curve of wavelength ratio difference with tilt angle
Fig. 10. Comparison of actual and theoretical calculation values
Fig. 11. Slope model and sensor layout. (a) Layout of the sensors; (b) physical object of the slope model
Fig. 12. Change curve of the tilt angle of the FBG inclinometer with time
Fig. 13. Displacement relationship curves between FBG inclinometer and LVDT displacement meter
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Table 1. Physical parameters of the sand
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