Hua QI, Yan FENG, Ruizhi PAN, Maomao XU, Haoxiang WANG, Hongpu ZHANG, Hua ZHANG. Bionic Touch Sensing of Wearable Fingerstall Based on Optical Fiber Bragg Grating[J]. Acta Photonica Sinica, 2023, 52(7): 0706003
- Acta Photonica Sinica
- Vol. 52, Issue 7, 0706003 (2023)
Fig. 1. Optical transport characteristics of the FBG
Fig. 2. Thumb's fingerstall model
Fig. 3. Schematic diagram of the FBG force under pressure at different positions
Fig. 4. Constraint and force of the thumb touch pressure sensing unit
Fig. 5. Schematic diagram of the FBG strain simulation of the thumb sensing unit
Fig. 6. Variations of strain with stress at different positions
Fig. 7. Variations of simulated wavelength with stress at different positions
Fig. 8. Touch and pressure sensing experimental device
Fig. 9. Center wavelengths at different positions of the touch experiment
Fig. 10. Center wavelength change over time at 10 HA
Fig. 11. The central wavelength changes with the depth of touch pressure
Fig. 12. Data of central wavelength under different hardness touch pressure（six experiments）
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Table 1. Silicone hardness characteristics
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Table 2. Standard deviations
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