Mr. Shuuhei Fujino Profile

Shuuhei Fujino

at Soka Univ

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Proceedings Article | 2 June 2014 Paper

A flexible tactile sensitive sheet using a hetero-core fiber optic sensor

S. Fujino, H. Yamazaki, A. Hosoki, K. Watanabe

Proceedings Volume 9157, 91579Y (2014) https://doi.org/10.1117/12.2059442

KEYWORDS: Sensors, Fiber optics sensors, Silicon, Optical fibers, Fiber optics, Biosensing, Space robots, Electromagnetic coupling, Motion detection, Skin

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In this report, we have designed a tactile sensitive sheet based on a hetero-core fiber-optic sensor, which realize an areal sensing by using single sensor potion in one optical fiber line. Recently, flexible and wide-area tactile sensing technology is expected to applied to acquired biological information in living space and robot achieve long-term care services such as welfare and nursing-care and humanoid technology. A hetero-core fiber-optic sensor has several advantages such as thin and flexible transmission line, immunity to EMI. Additionally this sensor is sensitive to moderate bending actions with optical loss changes and is independent of temperature fluctuation. Thus, the hetero-core fiber-optic sensor can be suitable for areal tactile sensing. We measure pressure characteristic of the proposed sensitive sheet by changing the pressure position and pinching characteristic on the surface. The proposed tactile sensitive sheet shows monotonic responses on the whole sensitive sheet surface although different sensitivity by the position is observed at the sensitive sheet surface. Moreover, the tactile sensitive sheet could sufficiently detect the pinching motion. In addition, in order to realize the discrimination between pressure and pinch, we fabricated a doubled-over sensor using a set of tactile sensitive sheets, which has different kinds of silicon robbers as a sensitive sheet surface. In conclusion, the flexible material could be given to the tactile sensation which is attached under proposed sensitive sheet.

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