A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.

Detalhes bibliográficos
Autor(a) principal: Rêgo Segundo, Alan Kardek
Data de Publicação: 2015
Outros Autores: Martins, José Helvecio, Monteiro, Paulo Marcos de Barros, Oliveira, Rubens Alves de, Freitas, Gustavo Medeiros
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
dARK ID: ark:/61566/001300000hkc2
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/6775
https://dx.doi.org/10.3390%2Fs151025546
Resumo: The scarcity of drinking water affects various regions of the planet. Although climate change is responsible for the water availability, humanity plays an important role in preserving this precious natural resource. In case of negligence, the likely trend is to increase the demand and the depletion of water resources due to the increasing world population. This paper addresses the development, design and construction of a low cost system for measuring soil volumetric water content (θ), electrical conductivity (σ) and temperature (T), in order to optimize the use of water, energy and fertilizer in food production. Different from the existing measurement instruments commonly deployed in these applications, the proposed system uses an auto-balancing bridge circuit as measurement method. The proposed models to estimate θ and σ and correct them in function of T are compared to the ones reported in literature. The final prototype corresponds to a simple circuit connected to a pair of electrode probes, and presents high accuracy, high signal to noise ratio, fast response, and immunity to stray capacitance. The instrument calibration is based on salt solutions with known dielectric constant and electrical conductivity as reference. Experiments measuring clay and sandy soils demonstrate the satisfactory performance of the instrument.
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spelling A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.Dielectric constantElectrical conductivitySelf balancing bridgeMicrocontrollerEmbedded systemThe scarcity of drinking water affects various regions of the planet. Although climate change is responsible for the water availability, humanity plays an important role in preserving this precious natural resource. In case of negligence, the likely trend is to increase the demand and the depletion of water resources due to the increasing world population. This paper addresses the development, design and construction of a low cost system for measuring soil volumetric water content (θ), electrical conductivity (σ) and temperature (T), in order to optimize the use of water, energy and fertilizer in food production. Different from the existing measurement instruments commonly deployed in these applications, the proposed system uses an auto-balancing bridge circuit as measurement method. The proposed models to estimate θ and σ and correct them in function of T are compared to the ones reported in literature. The final prototype corresponds to a simple circuit connected to a pair of electrode probes, and presents high accuracy, high signal to noise ratio, fast response, and immunity to stray capacitance. The instrument calibration is based on salt solutions with known dielectric constant and electrical conductivity as reference. Experiments measuring clay and sandy soils demonstrate the satisfactory performance of the instrument.2016-08-09T19:41:25Z2016-08-09T19:41:25Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfRÊGO SEGUNDO, A. K. et al. A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils. Sensors, Basel, v. 15, p. 25546-25563, 2015. Disponível em: <https://www.mdpi.com/1424-8220/15/10/25546>. Acesso em: 11 jul. 2016.1424-8220http://www.repositorio.ufop.br/handle/123456789/6775https://dx.doi.org/10.3390%2Fs151025546ark:/61566/001300000hkc2This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. Fonte: o próprio artigo.info:eu-repo/semantics/openAccessRêgo Segundo, Alan KardekMartins, José HelvecioMonteiro, Paulo Marcos de BarrosOliveira, Rubens Alves deFreitas, Gustavo Medeirosengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2024-11-11T06:51:36Zoai:repositorio.ufop.br:123456789/6775Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332024-11-11T06:51:36Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
title A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
spellingShingle A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
Rêgo Segundo, Alan Kardek
Dielectric constant
Electrical conductivity
Self balancing bridge
Microcontroller
Embedded system
title_short A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
title_full A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
title_fullStr A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
title_full_unstemmed A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
title_sort A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
author Rêgo Segundo, Alan Kardek
author_facet Rêgo Segundo, Alan Kardek
Martins, José Helvecio
Monteiro, Paulo Marcos de Barros
Oliveira, Rubens Alves de
Freitas, Gustavo Medeiros
author_role author
author2 Martins, José Helvecio
Monteiro, Paulo Marcos de Barros
Oliveira, Rubens Alves de
Freitas, Gustavo Medeiros
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Rêgo Segundo, Alan Kardek
Martins, José Helvecio
Monteiro, Paulo Marcos de Barros
Oliveira, Rubens Alves de
Freitas, Gustavo Medeiros
dc.subject.por.fl_str_mv Dielectric constant
Electrical conductivity
Self balancing bridge
Microcontroller
Embedded system
topic Dielectric constant
Electrical conductivity
Self balancing bridge
Microcontroller
Embedded system
description The scarcity of drinking water affects various regions of the planet. Although climate change is responsible for the water availability, humanity plays an important role in preserving this precious natural resource. In case of negligence, the likely trend is to increase the demand and the depletion of water resources due to the increasing world population. This paper addresses the development, design and construction of a low cost system for measuring soil volumetric water content (θ), electrical conductivity (σ) and temperature (T), in order to optimize the use of water, energy and fertilizer in food production. Different from the existing measurement instruments commonly deployed in these applications, the proposed system uses an auto-balancing bridge circuit as measurement method. The proposed models to estimate θ and σ and correct them in function of T are compared to the ones reported in literature. The final prototype corresponds to a simple circuit connected to a pair of electrode probes, and presents high accuracy, high signal to noise ratio, fast response, and immunity to stray capacitance. The instrument calibration is based on salt solutions with known dielectric constant and electrical conductivity as reference. Experiments measuring clay and sandy soils demonstrate the satisfactory performance of the instrument.
publishDate 2015
dc.date.none.fl_str_mv 2015
2016-08-09T19:41:25Z
2016-08-09T19:41:25Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv RÊGO SEGUNDO, A. K. et al. A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils. Sensors, Basel, v. 15, p. 25546-25563, 2015. Disponível em: <https://www.mdpi.com/1424-8220/15/10/25546>. Acesso em: 11 jul. 2016.
1424-8220
http://www.repositorio.ufop.br/handle/123456789/6775
https://dx.doi.org/10.3390%2Fs151025546
dc.identifier.dark.fl_str_mv ark:/61566/001300000hkc2
identifier_str_mv RÊGO SEGUNDO, A. K. et al. A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils. Sensors, Basel, v. 15, p. 25546-25563, 2015. Disponível em: <https://www.mdpi.com/1424-8220/15/10/25546>. Acesso em: 11 jul. 2016.
1424-8220
ark:/61566/001300000hkc2
url http://www.repositorio.ufop.br/handle/123456789/6775
https://dx.doi.org/10.3390%2Fs151025546
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 Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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