Abstract
Advantages like electromagnetic field immunity, fracture toughness, high strain limits, flexibility in bending and impact resistance of polymer optical fibers (POFs) are beneficial for applications that involve embedment in flexible structures. Since insoles are one of these flexible structures that may be used in different wearable applications, POFs can be applied and this paper proposes the application of POF sensors in insole instrumentation with two different approaches: intensity variation-based and polymer optical fiber Bragg gratings (POFBGs). Results show that both approaches present low errors with root mean squared errors (RMSEs) of 45.17 kPa for the plantar pressure monitoring with the POFBG-based insole and 5.30 N for the ground reaction force measurement with the intensity variation sensors. These results demonstrate the feasibility of POF sensors applications in flexible structures and in wearable applications such as insoles and soft robotics instrumentation.
This research is financed by CAPES (88887.095626/2015-01), FAPES (72982608), CNPq (304192/2016-3 and 310310/2015-6), FCT by the National Funds through the FCT/MEC and the ERDF under the PT2020 Partnership Agreement (SFRH/BPD/109458/2015, UID/EEA/50008/2013).
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Hadi, A., et al.: Foot plantar pressure measurement system: a review. Sensors 12(7), 9884–9912 (2012)
Morag, E., Cavanagh, P.R.: Structural and functional predictors of regional peak pressures under the foot during walking. J. Biomech. 32(4), 359–370 (1999)
Taborri, J., Palermo, E., Rossi, S., Cappa, P.: Gait partitioning methods: a systematic review. Sensors 16(1), 66 (2016)
Abboud, R.J.: Relevant foot biomechanics. Current Orthop. 16(3), 165–179 (2002)
Kirtley, C.: Clinical Gait Analysis: Theory and Practice. Elsevier, Philadelphia (2006)
Villa-Parra, A., et al.: Knee impedance modulation to control an active orthosis using insole sensors. sensors 17(12), 2751 (2017)
Leal-Junior, A.G., et al.: Polymer optical fiber for in-shoe monitoring of ground reaction forces during the gait. IEEE Sens. J. 18(6), 1558–1748 (2018)
Peters, K.: Polymer optical fiber sensors—a review. Smart Mater. Struct. 20(1), 13002 (2011)
Leal-Junior, A.G., Frizera, A., José Pontes, M.: Sensitive zone parameters and curvature radius evaluation for polymer optical fiber curvature sensors. Opt. Laser Technol. 100, 272–281 (2018)
Vilarinho, D., et al.: POFBG-embedded cork insole for plantar pressure monitoring. Sensors 17(12), 2924 (2017)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Switzerland AG
About this paper
Cite this paper
Leal-Junior, A.G. et al. (2019). Polymer Optical Fiber Sensors Approaches for Insole Instrumentation. In: Carrozza, M., Micera, S., Pons, J. (eds) Wearable Robotics: Challenges and Trends. WeRob 2018. Biosystems & Biorobotics, vol 22. Springer, Cham. https://doi.org/10.1007/978-3-030-01887-0_91
Download citation
DOI: https://doi.org/10.1007/978-3-030-01887-0_91
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-030-01886-3
Online ISBN: 978-3-030-01887-0
eBook Packages: EngineeringEngineering (R0)