Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) |
Texto Completo: | http://repositorio.ufes.br/handle/10/10178 |
Resumo: | The popularization and fast growth of the optical fiber sensing technology has stimulated in different fields WHERE measurements of diverse physical and chemical parameters are required. Among these parameters, liquid level sensing plays an essential role in industry applications such as chemical processing, fuel storage, transportation systems, oil tanks/reservoirs, and wastewater treatment plants. In order to measure this parameter different sensing techniques based on acoustical, mechanical, electrical and electromagnetical technologies have been already proposed. Nevertheless, they suffer from intrinsic safety concerns in harsh environments, especially with corrosive, and explosive or flammable atmospheres. Fiber optic based liquid level sensors (FOLLS) can work in harsh environments with inherent advantageous features that only optical fiber offers, such as intrinsic safety, resistance to chemical corrosion, immunity to electromagnetic interference, electric isolation, small size, lightweight sensing heads, high accuracy and resolution, easy multiplexing, and capability for extremely remote monitoring without the need of electrical power at the measuring point. In this context, this doctoral Thesis presents two specific optical fiber sensor technologies to measure liquid level. Both the MachZehnder and FabryPerot interferometers are researched. The Thesis also focus on uniform fiber Bragg grating (FBG). Since these technologies have different operation principle, the liquid level measurement was based on refractive index changes for the MachZehnder sensor and based on hydrostatic pressure in the case of both the FPI and FBG sensors. Furthermore, analysis of temperature crosssensitivity is performed with the aim to improve the pressurebased sensors performance. Despite the FBGs provide high accurate measurements, the interrogation systems are the most important drawback for their large commercial application, due to their high cost. Therefore, a new and lower cost interrogation technique based on FPI microcavities was proposed as a final contribution. |
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Frizera Neto, AnselmoRibeiro, Moisés Renato NunesRodríguez Díaz, Camilo ArturoSilva, Jean Carlos Cardozo daWerneck, Marcelo MartinsPontes, Maria JoséCastellani, Carlos Eduardo Schmidt2018-08-23T22:06:02Z2018-08-232018-08-23T22:06:02Z2018-06-06The popularization and fast growth of the optical fiber sensing technology has stimulated in different fields WHERE measurements of diverse physical and chemical parameters are required. Among these parameters, liquid level sensing plays an essential role in industry applications such as chemical processing, fuel storage, transportation systems, oil tanks/reservoirs, and wastewater treatment plants. In order to measure this parameter different sensing techniques based on acoustical, mechanical, electrical and electromagnetical technologies have been already proposed. Nevertheless, they suffer from intrinsic safety concerns in harsh environments, especially with corrosive, and explosive or flammable atmospheres. Fiber optic based liquid level sensors (FOLLS) can work in harsh environments with inherent advantageous features that only optical fiber offers, such as intrinsic safety, resistance to chemical corrosion, immunity to electromagnetic interference, electric isolation, small size, lightweight sensing heads, high accuracy and resolution, easy multiplexing, and capability for extremely remote monitoring without the need of electrical power at the measuring point. In this context, this doctoral Thesis presents two specific optical fiber sensor technologies to measure liquid level. Both the MachZehnder and FabryPerot interferometers are researched. The Thesis also focus on uniform fiber Bragg grating (FBG). Since these technologies have different operation principle, the liquid level measurement was based on refractive index changes for the MachZehnder sensor and based on hydrostatic pressure in the case of both the FPI and FBG sensors. Furthermore, analysis of temperature crosssensitivity is performed with the aim to improve the pressurebased sensors performance. Despite the FBGs provide high accurate measurements, the interrogation systems are the most important drawback for their large commercial application, due to their high cost. Therefore, a new and lower cost interrogation technique based on FPI microcavities was proposed as a final contribution.ResumoTexthttp://repositorio.ufes.br/handle/10/10178engUniversidade Federal do Espírito SantoDoutorado em Engenharia ElétricaPrograma de Pós-Graduação em Engenharia ElétricaUFESBRCentro TecnológicoInterferômetro de Mach-ZehnderInterferômetro de Fabry-PerotDetectores ópticosGrades de BraggInterferômetrosIndicadores de nivel liquidoEngenharia Elétrica621.3Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoringinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)instname:Universidade Federal do Espírito Santo (UFES)instacron:UFESORIGINALtese_8266_Thesis_Final Camilo.pdfapplication/pdf34209018http://repositorio.ufes.br/bitstreams/e306e31b-06c1-45ec-b6f3-8d0b106b7809/downloadf8bbb0b51ae8a11a48c4546685b529d0MD5110/101782024-07-17 16:58:17.245oai:repositorio.ufes.br:10/10178http://repositorio.ufes.brRepositório InstitucionalPUBhttp://repositorio.ufes.br/oai/requestopendoar:21082024-10-15T17:52:11.827201Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) - Universidade Federal do Espírito Santo (UFES)false |
dc.title.none.fl_str_mv |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
title |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
spellingShingle |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring Rodríguez Díaz, Camilo Arturo Interferômetro de Mach-Zehnder Interferômetro de Fabry-Perot Engenharia Elétrica Detectores ópticos Grades de Bragg Interferômetros Indicadores de nivel liquido 621.3 |
title_short |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
title_full |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
title_fullStr |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
title_full_unstemmed |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
title_sort |
Optical fiber sensing for sub-millimeter intrinsically-safe liquid level monitoring |
author |
Rodríguez Díaz, Camilo Arturo |
author_facet |
Rodríguez Díaz, Camilo Arturo |
author_role |
author |
dc.contributor.advisor-co1.fl_str_mv |
Frizera Neto, Anselmo |
dc.contributor.advisor1.fl_str_mv |
Ribeiro, Moisés Renato Nunes |
dc.contributor.author.fl_str_mv |
Rodríguez Díaz, Camilo Arturo |
dc.contributor.referee1.fl_str_mv |
Silva, Jean Carlos Cardozo da |
dc.contributor.referee2.fl_str_mv |
Werneck, Marcelo Martins |
dc.contributor.referee3.fl_str_mv |
Pontes, Maria José |
dc.contributor.referee4.fl_str_mv |
Castellani, Carlos Eduardo Schmidt |
contributor_str_mv |
Frizera Neto, Anselmo Ribeiro, Moisés Renato Nunes Silva, Jean Carlos Cardozo da Werneck, Marcelo Martins Pontes, Maria José Castellani, Carlos Eduardo Schmidt |
dc.subject.por.fl_str_mv |
Interferômetro de Mach-Zehnder Interferômetro de Fabry-Perot |
topic |
Interferômetro de Mach-Zehnder Interferômetro de Fabry-Perot Engenharia Elétrica Detectores ópticos Grades de Bragg Interferômetros Indicadores de nivel liquido 621.3 |
dc.subject.cnpq.fl_str_mv |
Engenharia Elétrica |
dc.subject.br-rjbn.none.fl_str_mv |
Detectores ópticos Grades de Bragg Interferômetros Indicadores de nivel liquido |
dc.subject.udc.none.fl_str_mv |
621.3 |
description |
The popularization and fast growth of the optical fiber sensing technology has stimulated in different fields WHERE measurements of diverse physical and chemical parameters are required. Among these parameters, liquid level sensing plays an essential role in industry applications such as chemical processing, fuel storage, transportation systems, oil tanks/reservoirs, and wastewater treatment plants. In order to measure this parameter different sensing techniques based on acoustical, mechanical, electrical and electromagnetical technologies have been already proposed. Nevertheless, they suffer from intrinsic safety concerns in harsh environments, especially with corrosive, and explosive or flammable atmospheres. Fiber optic based liquid level sensors (FOLLS) can work in harsh environments with inherent advantageous features that only optical fiber offers, such as intrinsic safety, resistance to chemical corrosion, immunity to electromagnetic interference, electric isolation, small size, lightweight sensing heads, high accuracy and resolution, easy multiplexing, and capability for extremely remote monitoring without the need of electrical power at the measuring point. In this context, this doctoral Thesis presents two specific optical fiber sensor technologies to measure liquid level. Both the MachZehnder and FabryPerot interferometers are researched. The Thesis also focus on uniform fiber Bragg grating (FBG). Since these technologies have different operation principle, the liquid level measurement was based on refractive index changes for the MachZehnder sensor and based on hydrostatic pressure in the case of both the FPI and FBG sensors. Furthermore, analysis of temperature crosssensitivity is performed with the aim to improve the pressurebased sensors performance. Despite the FBGs provide high accurate measurements, the interrogation systems are the most important drawback for their large commercial application, due to their high cost. Therefore, a new and lower cost interrogation technique based on FPI microcavities was proposed as a final contribution. |
publishDate |
2018 |
dc.date.accessioned.fl_str_mv |
2018-08-23T22:06:02Z |
dc.date.available.fl_str_mv |
2018-08-23 2018-08-23T22:06:02Z |
dc.date.issued.fl_str_mv |
2018-06-06 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufes.br/handle/10/10178 |
url |
http://repositorio.ufes.br/handle/10/10178 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
Text |
dc.publisher.none.fl_str_mv |
Universidade Federal do Espírito Santo Doutorado em Engenharia Elétrica |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Elétrica |
dc.publisher.initials.fl_str_mv |
UFES |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Centro Tecnológico |
publisher.none.fl_str_mv |
Universidade Federal do Espírito Santo Doutorado em Engenharia Elétrica |
dc.source.none.fl_str_mv |
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Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) |
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