A hetero-core fiber optic smart mat sensor for discrimination between a moving human and object on temporal loss peaks

Ai Hosoki; Michiko Nishiyama; Yongwoon Choi; Kazuhiro Watanabe

doi:10.1117/12.885063

17 May 2011 A hetero-core fiber optic smart mat sensor for discrimination between a moving human and object on temporal loss peaks

Ai Hosoki, Michiko Nishiyama, Yongwoon Choi, Kazuhiro Watanabe

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77534D (2011) https://doi.org/10.1117/12.885063
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

In this paper, we propose discrimination method between a moving human and object by means of a hetero-core fiber smart mat sensor which induces the optical loss change in time. In addition to several advantages such as flexibility, thin size and resistance to electro-magnetic interference for a fiber optic sensor, a hetero-core fiber optic sensor is sensitive to bending action of the sensor portion and independent of temperature fluctuations. Therefore, the hetero-core fiber thin mat sensor can have a fewer sensing portions than the conventional floor pressure sensors, furthermore, can detect the wide area covering the length of strides. The experimental results for human walking tests showed that the mat sensors were reproducibly working in real-time under limiting locations the foot passed in the mat sensor. Focusing on the temporal peak numbers in the optical loss, human walking and wheeled platform moving action induced the peak numbers in the range of 1 - 3 and 5 - 7, respectively, for the 10 persons including 9 male and 1 female. As a result, we conclude that the hetero-core fiber mat sensor is capable of discriminating between the moving human and object such as a wheeled platform focusing on the peak numbers in the temporal optical loss.

Citation Download Citation

Ai Hosoki, Michiko Nishiyama, Yongwoon Choi, and Kazuhiro Watanabe "A hetero-core fiber optic smart mat sensor for discrimination between a moving human and object on temporal loss peaks", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77534D (17 May 2011); https://doi.org/10.1117/12.885063

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