Design and characterization of a wearable macrobending fiber optic sensor for human joint angle determination

Ana S. Silva; Andre Catarino; Miguel V. Correia; Orlando Frazão

doi:10.1117/1.OE.52.12.126106

19 December 2013 Design and characterization of a wearable macrobending fiber optic sensor for human joint angle determination

Ana S. Silva, Andre Catarino, Miguel V. Correia, Orlando Frazão

Author Affiliations +

Funded by: FCT

Optical Engineering, Vol. 52, Issue 12, 126106 (December 2013). https://doi.org/10.1117/1.OE.52.12.126106

Abstract

The work presented here describes the development and characterization of intensity fiber optic sensor integrated in a specifically designed piece of garment to measure elbow flexion. The sensing head is based on macrobending incorporated in the garment, and the increase of curvature number was studied in order to investigate which scheme provided a good result in terms of sensitivity and repeatability. Results showed the configuration that assured a higher sensitivity (0.644 dBm/deg ) and better repeatability was the one with four loops. Ultimately, this sensor can be used for rehabilitation purposes to monitor human joint angles, namely, elbow flexion on stroke survivors while performing the reach functional task, which is the most common upper-limb human gesture.

Citation Download Citation

Ana S. Silva, Andre Catarino, Miguel V. Correia, and Orlando Frazão "Design and characterization of a wearable macrobending fiber optic sensor for human joint angle determination," Optical Engineering 52(12), 126106 (19 December 2013). https://doi.org/10.1117/1.OE.52.12.126106

Published: 19 December 2013

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