Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection

Detalhes bibliográficos
Autor(a) principal: Morais, Raul
Data de Publicação: 2006
Outros Autores: Valente, António, Almeida, José Carlos, Silva, Amélia, Soares, Salviano, Reis, M.C., Valentim, Ramiro, Azevedo, Jorge Manuel Teixeira de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10348/1553
Resumo: In cattle breeding industry, where artificial insemination techniques are employed, the successful detection of estrus onset leads to considerable cost-saving in herd management. One of the most reliable approaches is based on the determination of progesterone concentration in milk. However, these methods rely on the biosensor concept where a biological substrate is used in a chemical-binding reaction to directly or indirectly produce some effect (electrical or light) that is used at the transducer level. These methods present several drawbacks concerning real-time measurements due to the complexity of the reactions involved and reagent/waste handling. Another approach is to combine measurements of temperature and electrical resistance of reproductive tissues to predict estrus. Using a low-power microsystem with wireless capabilities it is possible to take these measurements in situ and more frequently. The proposed microsystem comprises a second-order delta–sigma modulator for analog-to-digital conversion and a class-E radio-frequency (RF) transmitter operating in the ISM-band of 433MHz to transfer acquired data to a collar. Electrical resistance is measured by using a modifiedWenner array and temperature by the on-chip temperature sensor. System (including battery and antenna) package is made of a tissue-compatible material to allow implantation in the cow’s vulvar muscle. Since estrus prediction is based on relative changes of the two correlated parameters, calibration is not necessary. Some preliminary results regarding the measuring concept are presented.
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spelling Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detectionMicrosystemElectrical resistivity sensorWireless interfaceEstrus predictionIn cattle breeding industry, where artificial insemination techniques are employed, the successful detection of estrus onset leads to considerable cost-saving in herd management. One of the most reliable approaches is based on the determination of progesterone concentration in milk. However, these methods rely on the biosensor concept where a biological substrate is used in a chemical-binding reaction to directly or indirectly produce some effect (electrical or light) that is used at the transducer level. These methods present several drawbacks concerning real-time measurements due to the complexity of the reactions involved and reagent/waste handling. Another approach is to combine measurements of temperature and electrical resistance of reproductive tissues to predict estrus. Using a low-power microsystem with wireless capabilities it is possible to take these measurements in situ and more frequently. The proposed microsystem comprises a second-order delta–sigma modulator for analog-to-digital conversion and a class-E radio-frequency (RF) transmitter operating in the ISM-band of 433MHz to transfer acquired data to a collar. Electrical resistance is measured by using a modifiedWenner array and temperature by the on-chip temperature sensor. System (including battery and antenna) package is made of a tissue-compatible material to allow implantation in the cow’s vulvar muscle. Since estrus prediction is based on relative changes of the two correlated parameters, calibration is not necessary. Some preliminary results regarding the measuring concept are presented.Elsevier2012-02-03T11:04:01Z2006-01-01T00:00:00Z2006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10348/1553eng0924 - 4247Morais, RaulValente, AntónioAlmeida, José CarlosSilva, AméliaSoares, SalvianoReis, M.C.Valentim, RamiroAzevedo, Jorge Manuel Teixeira deinfo: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:RCAAP2024-02-02T12:48:38Zoai:repositorio.utad.pt:10348/1553Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:04:39.743723Repositório 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 Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
title Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
spellingShingle Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
Morais, Raul
Microsystem
Electrical resistivity sensor
Wireless interface
Estrus prediction
title_short Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
title_full Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
title_fullStr Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
title_full_unstemmed Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
title_sort Concept study of an implantable microsystem for electrical resistance and temperature measurements in dairy cows, suitable for estrus detection
author Morais, Raul
author_facet Morais, Raul
Valente, António
Almeida, José Carlos
Silva, Amélia
Soares, Salviano
Reis, M.C.
Valentim, Ramiro
Azevedo, Jorge Manuel Teixeira de
author_role author
author2 Valente, António
Almeida, José Carlos
Silva, Amélia
Soares, Salviano
Reis, M.C.
Valentim, Ramiro
Azevedo, Jorge Manuel Teixeira de
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Morais, Raul
Valente, António
Almeida, José Carlos
Silva, Amélia
Soares, Salviano
Reis, M.C.
Valentim, Ramiro
Azevedo, Jorge Manuel Teixeira de
dc.subject.por.fl_str_mv Microsystem
Electrical resistivity sensor
Wireless interface
Estrus prediction
topic Microsystem
Electrical resistivity sensor
Wireless interface
Estrus prediction
description In cattle breeding industry, where artificial insemination techniques are employed, the successful detection of estrus onset leads to considerable cost-saving in herd management. One of the most reliable approaches is based on the determination of progesterone concentration in milk. However, these methods rely on the biosensor concept where a biological substrate is used in a chemical-binding reaction to directly or indirectly produce some effect (electrical or light) that is used at the transducer level. These methods present several drawbacks concerning real-time measurements due to the complexity of the reactions involved and reagent/waste handling. Another approach is to combine measurements of temperature and electrical resistance of reproductive tissues to predict estrus. Using a low-power microsystem with wireless capabilities it is possible to take these measurements in situ and more frequently. The proposed microsystem comprises a second-order delta–sigma modulator for analog-to-digital conversion and a class-E radio-frequency (RF) transmitter operating in the ISM-band of 433MHz to transfer acquired data to a collar. Electrical resistance is measured by using a modifiedWenner array and temperature by the on-chip temperature sensor. System (including battery and antenna) package is made of a tissue-compatible material to allow implantation in the cow’s vulvar muscle. Since estrus prediction is based on relative changes of the two correlated parameters, calibration is not necessary. Some preliminary results regarding the measuring concept are presented.
publishDate 2006
dc.date.none.fl_str_mv 2006-01-01T00:00:00Z
2006
2012-02-03T11:04:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10348/1553
url http://hdl.handle.net/10348/1553
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0924 - 4247
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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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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