Optical fiber solutions to physical rehabilitation systems and e-Health applications

Detalhes bibliográficos
Autor(a) principal: Leite, Tiago Maurício de Pinho
Data de Publicação: 2018
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/25194
Resumo: In this dissertation a biaxial optical fiber sensor, based on Bragg gratings, is proposed for simultaneous monitoring of plantar and shear pressures. This work begins with the definition of the problem: the consequences of pathologies associated with diabetic foot and lower limbs disorders. It was analysed several previously published studies on plantar pressure sensors, the several methodologies and applications that already exist. A biomechanical research was carried out, with particular focus on gait pattern and human foot anatomy, in order to understand the different gait phases and points of greatest interest for foot pressure monitoring. Thus, the response of sensors based on Bragg gratings was studied in several configurations of sensing cells, then integrated in insoles. The sensitivities obtained for normal pressure were between 0.56 and 2.16 pm/kPa and, for shear pressure, between 0.51 and 3.98 pm/kPa. Those prove to be a non-invasive solution with potential to be included in e-health systems for real-time gait monitoring. They can be prepared for daily medical use, serving as important tools in aiding prevention and diagnosis, especially of foot diseases.
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spelling Optical fiber solutions to physical rehabilitation systems and e-Health applicationsOptical fiber sensorsFiber bragg gratingPlantar pressureShear pressureGait analysisIn this dissertation a biaxial optical fiber sensor, based on Bragg gratings, is proposed for simultaneous monitoring of plantar and shear pressures. This work begins with the definition of the problem: the consequences of pathologies associated with diabetic foot and lower limbs disorders. It was analysed several previously published studies on plantar pressure sensors, the several methodologies and applications that already exist. A biomechanical research was carried out, with particular focus on gait pattern and human foot anatomy, in order to understand the different gait phases and points of greatest interest for foot pressure monitoring. Thus, the response of sensors based on Bragg gratings was studied in several configurations of sensing cells, then integrated in insoles. The sensitivities obtained for normal pressure were between 0.56 and 2.16 pm/kPa and, for shear pressure, between 0.51 and 3.98 pm/kPa. Those prove to be a non-invasive solution with potential to be included in e-health systems for real-time gait monitoring. They can be prepared for daily medical use, serving as important tools in aiding prevention and diagnosis, especially of foot diseases.Nesta dissertação é proposto um sensor biaxial em fibra ótica, baseado em redes de Bragg, para monitorização simultânea de pressões plantar e de cisalhamento. Este trabalho começa com a definição do problema: as consequências de patologias associadas ao pé diabético e distúrbios na sincronização dos membros inferiores. Foram analisados vários estudos publicados anteriormente sobre sensores de pressão plantar, as diversas metodologias e aplicações já existentes. Foi realizada uma pesquisa na área da biomecânica, com particular foco no padrão de marcha e na anatomia do pé humano, de forma a compreender as diferentes fases da marcha e os pontos de maior interesse para monitorização da pressão do pé. Assim, foi desenvolvido um estudo sobre a resposta de sensores baseados em redes de Bragg à pressão, em várias configurações de células sensoriais, culminando na integração desses sensores em palmilhas. Foram obtidas sensibilidades para pressão normal entre 0,56 e 2,16 pm/kPa e, para pressão de cisalhamento, entre 0,51 e 3,98 pm/kPa. Estas demonstram ser uma solução não invasiva, com potencial de ser incluída em sistemas e-Health, para monitorização da marcha em tempo real. Podem ser preparadas para uso médico diário, servindo como importantes ferramentas no auxílio para a prevenção e diagnóstico, em especial de doenças do pé.2019-01-28T13:52:45Z2018-07-03T00:00:00Z2018-07-03info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10773/25194TID:202237044engLeite, Tiago Maurício de Pinhoinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:49:04Zoai:ria.ua.pt:10773/25194Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:58:35.117877Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Optical fiber solutions to physical rehabilitation systems and e-Health applications
title Optical fiber solutions to physical rehabilitation systems and e-Health applications
spellingShingle Optical fiber solutions to physical rehabilitation systems and e-Health applications
Leite, Tiago Maurício de Pinho
Optical fiber sensors
Fiber bragg grating
Plantar pressure
Shear pressure
Gait analysis
title_short Optical fiber solutions to physical rehabilitation systems and e-Health applications
title_full Optical fiber solutions to physical rehabilitation systems and e-Health applications
title_fullStr Optical fiber solutions to physical rehabilitation systems and e-Health applications
title_full_unstemmed Optical fiber solutions to physical rehabilitation systems and e-Health applications
title_sort Optical fiber solutions to physical rehabilitation systems and e-Health applications
author Leite, Tiago Maurício de Pinho
author_facet Leite, Tiago Maurício de Pinho
author_role author
dc.contributor.author.fl_str_mv Leite, Tiago Maurício de Pinho
dc.subject.por.fl_str_mv Optical fiber sensors
Fiber bragg grating
Plantar pressure
Shear pressure
Gait analysis
topic Optical fiber sensors
Fiber bragg grating
Plantar pressure
Shear pressure
Gait analysis
description In this dissertation a biaxial optical fiber sensor, based on Bragg gratings, is proposed for simultaneous monitoring of plantar and shear pressures. This work begins with the definition of the problem: the consequences of pathologies associated with diabetic foot and lower limbs disorders. It was analysed several previously published studies on plantar pressure sensors, the several methodologies and applications that already exist. A biomechanical research was carried out, with particular focus on gait pattern and human foot anatomy, in order to understand the different gait phases and points of greatest interest for foot pressure monitoring. Thus, the response of sensors based on Bragg gratings was studied in several configurations of sensing cells, then integrated in insoles. The sensitivities obtained for normal pressure were between 0.56 and 2.16 pm/kPa and, for shear pressure, between 0.51 and 3.98 pm/kPa. Those prove to be a non-invasive solution with potential to be included in e-health systems for real-time gait monitoring. They can be prepared for daily medical use, serving as important tools in aiding prevention and diagnosis, especially of foot diseases.
publishDate 2018
dc.date.none.fl_str_mv 2018-07-03T00:00:00Z
2018-07-03
2019-01-28T13:52:45Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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format masterThesis
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/25194
TID:202237044
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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