Pressure and Deformation Measurement with Piezoresistive Sensors
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.6/9594 |
Resumo: | This dissertation shows us the processes to develop a sensor capable of measuring deformations of surfaces. The work englobes the processes of production and assemblage of the transducers, the electronics boards to read the signals from the transducers and, finally, the development of algorithms used to transform the signal of the sensor in readable information either for humans and other computers. The work starts with the study of the production and assemblage methods of the transducers. In this part, we used the screen printing technique to print the different layers of the transducer. After obtaining the printed transducer, we tested it, measuring only the main characteristics, as the variation of resistance with pressure. This gave us important information to proceed with the dimensioning of the measurement chain. The second part of this project, was focused in the design of the measurement chain. For this work, we projected a device that can adapt automatically to different values of sensors’ resistance. Because the transducers tested in this project have a hysteretic behavior, a mathematical model used to model the magnetic hysteresis was adapted to be used with piezoresistive sensors. This work meets the initial goal which was building a complete data acquisition system for a printed piezoresistive sensor. The proposed mathematical algorithm to model the resistance of piezoresistive sensors opens doors for future projects. |
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Pressure and Deformation Measurement with Piezoresistive SensorsAquisição de DadosModelo de PreisachSensores ImpressosSensores PiezoresistivosDomínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e InformáticaThis dissertation shows us the processes to develop a sensor capable of measuring deformations of surfaces. The work englobes the processes of production and assemblage of the transducers, the electronics boards to read the signals from the transducers and, finally, the development of algorithms used to transform the signal of the sensor in readable information either for humans and other computers. The work starts with the study of the production and assemblage methods of the transducers. In this part, we used the screen printing technique to print the different layers of the transducer. After obtaining the printed transducer, we tested it, measuring only the main characteristics, as the variation of resistance with pressure. This gave us important information to proceed with the dimensioning of the measurement chain. The second part of this project, was focused in the design of the measurement chain. For this work, we projected a device that can adapt automatically to different values of sensors’ resistance. Because the transducers tested in this project have a hysteretic behavior, a mathematical model used to model the magnetic hysteresis was adapted to be used with piezoresistive sensors. This work meets the initial goal which was building a complete data acquisition system for a printed piezoresistive sensor. The proposed mathematical algorithm to model the resistance of piezoresistive sensors opens doors for future projects.Esta dissertação vem mostrar o processo completo para o desenvolvimento de um sensor capaz de medir deformações de superfícies. O trabalho passa assim pelos processos de produção e montagem dos transdutores, pelos circuitos eletrónicos desenhados para fazer as leituras do transdutor e finalmente pelos algoritmos utilizados para transformar o sinal do sensor numa informação que pode ser interpretada por humanos ou por outras máquinas. Desta forma, o trabalho inicia-se por um estudo dos métodos de produção e montagem dos transdutores. No final optou-se pela técnica de screen printing para produzir os transdutores e os elétrodos. Quanto ao método de montagem, optou-se por fazer uma sobreposição das camadas impressas. Após termos o transdutor impresso conseguimos testá-lo e assim obter informações como a variação da resistência. Estes são parâmetros muito importantes para o dimensionamento da cadeia de medida, que foi o segundo passo deste trabalho. Foi desenhada uma cadeia de medida capaz de fazer a leitura de diferentes sensores ao mesmo tempo. Este circuito é também capaz de se adaptar a diferentes sensores automaticamente. Como os sensores testados neste projeto apresentaram histerese, para contornar esta situação, um modelo de aproximação utilizado com materiais magnéticos foi adaptado para os sensores piezoresistivos. O trabalho cumpre o objetivo proposto no início deste projeto que era construir um sistema completo de aquisição de dados de um sensor piezoresistivo impresso. No final foi introduzido a adaptação do algoritmo que abre portas para futuros trabalhos.Espírito Santo, António Eduardo Vitória doLanceros, SenentxuuBibliorumPimentel, José Henrique Fernandes2020-02-26T17:07:13Z2017-07-202017-06-272017-07-20T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.6/9594TID:202336867enginfo: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:RCAAP2023-12-15T09:50:54Zoai:ubibliorum.ubi.pt:10400.6/9594Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:49:46.630931Repositório 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 |
Pressure and Deformation Measurement with Piezoresistive Sensors |
title |
Pressure and Deformation Measurement with Piezoresistive Sensors |
spellingShingle |
Pressure and Deformation Measurement with Piezoresistive Sensors Pimentel, José Henrique Fernandes Aquisição de Dados Modelo de Preisach Sensores Impressos Sensores Piezoresistivos Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
title_short |
Pressure and Deformation Measurement with Piezoresistive Sensors |
title_full |
Pressure and Deformation Measurement with Piezoresistive Sensors |
title_fullStr |
Pressure and Deformation Measurement with Piezoresistive Sensors |
title_full_unstemmed |
Pressure and Deformation Measurement with Piezoresistive Sensors |
title_sort |
Pressure and Deformation Measurement with Piezoresistive Sensors |
author |
Pimentel, José Henrique Fernandes |
author_facet |
Pimentel, José Henrique Fernandes |
author_role |
author |
dc.contributor.none.fl_str_mv |
Espírito Santo, António Eduardo Vitória do Lanceros, Senentxu uBibliorum |
dc.contributor.author.fl_str_mv |
Pimentel, José Henrique Fernandes |
dc.subject.por.fl_str_mv |
Aquisição de Dados Modelo de Preisach Sensores Impressos Sensores Piezoresistivos Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
topic |
Aquisição de Dados Modelo de Preisach Sensores Impressos Sensores Piezoresistivos Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática |
description |
This dissertation shows us the processes to develop a sensor capable of measuring deformations of surfaces. The work englobes the processes of production and assemblage of the transducers, the electronics boards to read the signals from the transducers and, finally, the development of algorithms used to transform the signal of the sensor in readable information either for humans and other computers. The work starts with the study of the production and assemblage methods of the transducers. In this part, we used the screen printing technique to print the different layers of the transducer. After obtaining the printed transducer, we tested it, measuring only the main characteristics, as the variation of resistance with pressure. This gave us important information to proceed with the dimensioning of the measurement chain. The second part of this project, was focused in the design of the measurement chain. For this work, we projected a device that can adapt automatically to different values of sensors’ resistance. Because the transducers tested in this project have a hysteretic behavior, a mathematical model used to model the magnetic hysteresis was adapted to be used with piezoresistive sensors. This work meets the initial goal which was building a complete data acquisition system for a printed piezoresistive sensor. The proposed mathematical algorithm to model the resistance of piezoresistive sensors opens doors for future projects. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-20 2017-06-27 2017-07-20T00:00:00Z 2020-02-26T17:07:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.6/9594 TID:202336867 |
url |
http://hdl.handle.net/10400.6/9594 |
identifier_str_mv |
TID:202336867 |
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 |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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 |
repository.mail.fl_str_mv |
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1799136388935843840 |