Special Section on Advanced Laser Technologies for Biophotonics

Insole optical fiber Bragg grating sensors network for dynamic vertical force monitoring

[+] Author Affiliations
Maria Fátima Domingues

Instituto de Telecomunicações, Campus Universitário de Santiago, Aveiro, Portugal

Centro de Automática y Robótica, CSIC-UPM, Arganda del Rey, Madrid, Spain

University of Aveiro, Department of Physics and I3N, Campus Universitário de Santiago, Aveiro, Portugal

Cátia Tavares, Ayman Radwan, Jonathan Rodriguez

Instituto de Telecomunicações, Campus Universitário de Santiago, Aveiro, Portugal

Cátia Leitão, Carlos Marques, Paulo Antunes

Instituto de Telecomunicações, Campus Universitário de Santiago, Aveiro, Portugal

University of Aveiro, Department of Physics and I3N, Campus Universitário de Santiago, Aveiro, Portugal

Anselmo Frizera-Neto

Federal University of Espírito Santo, Department of Electrical Engineering, Goiabeiras, Vitória, Brazil

Nélia Alberto

Instituto de Telecomunicações, Campus Universitário de Santiago, Aveiro, Portugal

University of Aveiro, Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, Aveiro, Portugal

Octavian Postolache

Lisbon University Institute, ISCTE-IUL, Instituto de Telecomunicações, Lisbon, Portugal

Eduardo Rocon

Centro de Automática y Robótica, CSIC-UPM, Arganda del Rey, Madrid, Spain

Paulo André

University of Lisbon, Instituto Superior Técnico, Instituto de Telecomunicações and Department of Electrical and Computer Engineering, Lisbon, Portugal

J. Biomed. Opt. 22(9), 091507 (Feb 28, 2017). doi:10.1117/1.JBO.22.9.091507
History: Received November 30, 2016; Accepted February 8, 2017
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Abstract.  In an era of unprecedented progress in technology and increase in population age, continuous and close monitoring of elder citizens and patients is becoming more of a necessity than a luxury. Contributing toward this field and enhancing the life quality of elder citizens and patients with disabilities, this work presents the design and implementation of a noninvasive platform and insole fiber Bragg grating sensors network to monitor the vertical ground reaction forces distribution induced in the foot plantar surface during gait and body center of mass displacements. The acquired measurements are a reliable indication of the accuracy and consistency of the proposed solution in monitoring and mapping the vertical forces active on the foot plantar sole, with a sensitivity up to 11.06  pm/N. The acquired measurements can be used to infer the foot structure and health condition, in addition to anomalies related to spine function and other pathologies (e.g., related to diabetes); also its application in rehabilitation robotics field can dramatically reduce the computational burden of exoskeletons’ control strategy. The proposed technology has the advantages of optical fiber sensing (robustness, noninvasiveness, accuracy, and electromagnetic insensitivity) to surpass all drawbacks verified in traditionally used sensing systems (fragility, instability, and inconsistent feedback).

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Maria Fátima Domingues ; Cátia Tavares ; Cátia Leitão ; Anselmo Frizera-Neto ; Nélia Alberto, et al.
"Insole optical fiber Bragg grating sensors network for dynamic vertical force monitoring", J. Biomed. Opt. 22(9), 091507 (Feb 28, 2017). ; http://dx.doi.org/10.1117/1.JBO.22.9.091507


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