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Gait Shear and Plantar Pressure Monitoring: A Non-Invasive OFS Based Solution for e-Health Architectures

AuthorsTavares, Cátia; Domingues, M. Fátima; Frizera Neto, Anselmo ; Leite, Tiago; Leitão, Cátia; Alberto, Nélia; Marques, Carlos; Radwan, Ayman; Rocón, Eduardo ; André, Paulo; Antunes, Paulo
Issue Date25-Apr-2018
PublisherMultidisciplinary Digital Publishing Institute
CitationSensors 18 (5): 1334 (2018)
AbstractIn an era of unprecedented progress in sensing technology and communication, health services are now able to closely monitor patients and elderly citizens without jeopardizing their daily routines through health applications on their mobile devices in what is known as e-Health. Within this field, we propose an optical fiber sensor (OFS) based system for the simultaneous monitoring of shear and plantar pressure during gait movement. These parameters are considered to be two key factors in gait analysis that can help in the early diagnosis of multiple anomalies, such as diabetic foot ulcerations or in physical rehabilitation scenarios. The proposed solution is a biaxial OFS based on two in-line fiber Bragg gratings (FBGs), which were inscribed in the same optical fiber and placed individually in two adjacent cavities, forming a small sensing cell. Such design presents a more compact and resilient solution with higher accuracy when compared to the existing electronic systems. The implementation of the proposed elements into an insole is also described, showcasing the compactness of the sensing cells, which can easily be integrated into a non-invasive mobile e-Health solution for continuous remote gait monitoring of patients and elder citizens. The reported results show that the proposed system outperforms existing solutions, in the sense that it is able to dynamically discriminate shear and plantar pressure during gait.
Publisher version (URL)http://dx.doi.org/10.3390/s18051334
DOIhttp://dx.doi.org/doi: 10.3390/s18051334
Identifiersdoi: 10.3390/s18051334
Appears in Collections:(CAR) Artículos
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