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Optical Engineering

Design and characterization of a wearable macrobending fiber optic sensor for human joint angle determination
Author(s): Ana S. Silva; Andre Catarino; Miguel V. Correia; Orlando Frazão
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Paper 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.

Paper Details

Date Published: 19 December 2013
PDF: 6 pages
Opt. Eng. 52(12) 126106 doi: 10.1117/1.OE.52.12.126106
Published in: Optical Engineering Volume 52, Issue 12
Show Author Affiliations
Ana S. Silva, INESC Porto (Portugal)
Andre Catarino, Univ. do Minho (Portugal)
Miguel V. Correia, Univ. do Porto (Portugal)
Orlando Frazão, INESC Porto (Portugal)

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