Low-cost control and measurement circuit for the implementation of single element heat dissipation soil water matric potential sensor based on a SnSe2 thermosensitive resistor

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidade Tecnológica Federal do Paraná (UTFPR)-
Autor(es): dc.contributorCatalonia Institute for Energy Research (IREC)-
Autor(es): dc.contributorCatalan Institution for Research and Advanced Studies-ICREA-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorMorais, Flávio [UNESP]-
Autor(es): dc.creatorCarvalhaes-Dias, Pedro-
Autor(es): dc.creatorZhang, Yu-
Autor(es): dc.creatorCabot, Andreu-
Autor(es): dc.creatorFlosi, Fábio S.-
Autor(es): dc.creatorDuarte, Luis Caparroz-
Autor(es): dc.creatorSantos, Adelson Dos-
Autor(es): dc.creatorSiqueira Dias, José A.-
Data de aceite: dc.date.accessioned2022-02-22T00:45:40Z-
Data de disponibilização: dc.date.available2022-02-22T00:45:40Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-02-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/s21041490-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/205915-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/205915-
Descrição: dc.descriptionA low-cost signal processing circuit developed to measure and drive a heat dissipation soil matric potential sensor based on a single thermosensitive resistor is demonstrated. The SnSe2 has a high thermal coefficient, from −2.4 Ω/◦ C in the 20 to 25◦ C to −1.07 Ω/◦ C in the 20 to 25◦ C. The SnSe2 thermosensitive resistor is encapsulated with a porous gypsum block and is used as both the heating and temperature sensing element. To control the power dissipated on the thermosensitive resistor and keep it constant during the heat pulse, a mixed analogue/digital circuit is used. The developed control circuit is able to maintain the dissipated power at 327.98 ± 0.3% mW when the resistor changes from 94.96 Ω to 86.23 Ω. When the gravimetric water content of the porous block changes from dry to saturated (θw = 36.7%), we measured a variation of 4.77 Ω in the thermosensitive resistor, which results in an end-point sensitivity of 130 mΩ/%. The developed system can easily meet the standard requirement of measuring the gravimetric soil water content with a resolution of approximately ∆θw = 1%, since the resistance is measured with a resolution of approximately 31 µΩ, three orders of magnitude smaller than the sensitivity.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionGeneralitat de Catalunya-
Descrição: dc.descriptionFaculty of Science and Engineering Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionDepartment of Electrical Engineering Universidade Tecnológica Federal do Paraná (UTFPR)-
Descrição: dc.descriptionCatalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1-
Descrição: dc.descriptionCatalan Institution for Research and Advanced Studies-ICREA, Pg. Lluís Companys 23-
Descrição: dc.descriptionDepartment of Semiconductors Instrumentation and Photonics School of Electrical and Computer Engineering University of Campinas-
Descrição: dc.descriptionFaculty of Science and Engineering Universidade Estadual Paulista (UNESP)-
Descrição: dc.descriptionCAPES: 0001-
Descrição: dc.descriptionGeneralitat de Catalunya: 2017SGR1246-
Formato: dc.format1-17-
Idioma: dc.languageen-
Relação: dc.relationSensors-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHeat dissipation matric water potential sensor-
Palavras-chave: dc.subjectHeat dissipation soil matric potential sensor-
Palavras-chave: dc.subjectPower control circuits-
Palavras-chave: dc.subjectSignal condition-ing circuit-
Palavras-chave: dc.subjectSingle-element soil matric water potential sensor-
Título: dc.titleLow-cost control and measurement circuit for the implementation of single element heat dissipation soil water matric potential sensor based on a SnSe2 thermosensitive resistor-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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