A novel low-cost instrumentation system for measuring the water content and apparent electrical conductivity of soils.
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
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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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 |
_version_ |
1817705808515825664 |