• Acta Photonica Sinica
  • Vol. 52, Issue 7, 0706003 (2023)
Hua QI1,2, Yan FENG1,2,*, Ruizhi PAN1,2, Maomao XU1..., Haoxiang WANG1,2, Hongpu ZHANG1,2 and Hua ZHANG1,2|Show fewer author(s)
Author Affiliations
  • 1School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China
  • 2Shanghai Collaborative Innovation Center of Intelligent Manufacturing Robot Technology for Large Components,Shanghai 201620,China
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    DOI: 10.3788/gzxb20235207.0706003 Cite this Article
    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 Copy Citation Text show less
    Optical transport characteristics of the FBG
    Fig. 1. Optical transport characteristics of the FBG
    Thumb's fingerstall model
    Fig. 2. Thumb's fingerstall model
    Schematic diagram of the FBG force under pressure at different positions
    Fig. 3. Schematic diagram of the FBG force under pressure at different positions
    Constraint and force of the thumb touch pressure sensing unit
    Fig. 4. Constraint and force of the thumb touch pressure sensing unit
    Schematic diagram of the FBG strain simulation of the thumb sensing unit
    Fig. 5. Schematic diagram of the FBG strain simulation of the thumb sensing unit
    Variations of strain with stress at different positions
    Fig. 6. Variations of strain with stress at different positions
    Variations of simulated wavelength with stress at different positions
    Fig. 7. Variations of simulated wavelength with stress at different positions
    Touch and pressure sensing experimental device
    Fig. 8. Touch and pressure sensing experimental device
    Center wavelengths at different positions of the touch experiment
    Fig. 9. Center wavelengths at different positions of the touch experiment
    Center wavelength change over time at 10 HA
    Fig. 10. Center wavelength change over time at 10 HA
    The central wavelength changes with the depth of touch pressure
    Fig. 11. The central wavelength changes with the depth of touch pressure
    Data of central wavelength under different hardness touch pressure(six experiments)
    Fig. 12. Data of central wavelength under different hardness touch pressure(six experiments)
    HardnessFeatures(based on subjective tactile perception by the human body)
    0 HAHardness similar to human skin
    10 HAHardness similar to the nipple
    20 HAHardness similar to eraser
    40 HAHardness similar to the tyre
    Table 1. Silicone hardness characteristics
    Touch depth/mm0 HA δ/pm10 HA δ/pm20 HA δ/pm40 HA δ/pm
    00.770.791.040.9
    51.121.171.481.58
    Table 2. Standard deviations
    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
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