Proof-of-concept of a carpet-embedded heterogeneous optical fiber sensor system for gait analysis

Arnaldo Leal Jr.; Letícia Avellar; Maria José Pontes; Carmilo Díaz; Carlos Marques; Anselmo Frizera

doi:10.1117/12.2541308

28 August 2019 Proof-of-concept of a carpet-embedded heterogeneous optical fiber sensor system for gait analysis

Arnaldo Leal Jr., Letícia Avellar, Maria José Pontes, Carmilo Díaz, Carlos Marques, Anselmo Frizera

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111990R (2019) https://doi.org/10.1117/12.2541308
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

This paper presents an optical fiber embedded intelligent carpet for gait analysis, where the system is able of measuring the ground reaction force and the foot position on the carpet (which can be used on the gait spatiotemporal parameters assessment). The system comprises of fiber Bragg gratings (FBGs) inscribed in silica fibers to detect the foot positioning and intensity variation-based sensors on polymer optical fibers (POFs) to estimate the ground reaction forces. The proposed system was characterized as function of foot impact positioning as well as applied forces and a high correlation between the sensors responses and the applied parameters was obtained on each case. Then, a proof-of-concept test was performed, where a volunteer placed his foot in different positions on the carpet, which show the feasibility of the system in the proposed application.

Citation Download Citation

Arnaldo Leal Jr., Letícia Avellar, Maria José Pontes, Carmilo Díaz, Carlos Marques, and Anselmo Frizera "Proof-of-concept of a carpet-embedded heterogeneous optical fiber sensor system for gait analysis", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111990R (28 August 2019); https://doi.org/10.1117/12.2541308

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