Drip irrigation using a PLC based adaptive irrigation system
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/18683 |
Resumo: | Most of the water used by man goes to irrigation. A major part of this water is used to irrigate small plots where it is not feasible to implement full-scale Evapotranspiration based irrigation controllers. During the growth season crop water needs do not remain constant and varies depending on the canopy, growth stage and climate conditions such as temperature, wind, relative humidity and solar radiation. Thus, it is necessary to find an economic irrigation controller that can adapt the daily water application to the plant needs. The dramatic development of Programmable Logic Controllers, PLCs, and their rather affordable price has made it possible to use them as stand-alone irrigation controllers. In this paper a PLC is used to adapt the daily irrigation amount to actual ETc, using a Hargreaves-Samani type equation. This equation only requires temperature values to calculate Evapotranspiration. Once the ETc is calculated, then the PLC manages the irrigation according to the characteristics of the field, the irrigation equipment and the growth stage of the crop. First year results are very encouraging and indicate a 12% saving in irrigation water. It was also found that heat flux form the soil can influence canopy temperature. |
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Drip irrigation using a PLC based adaptive irrigation systemPLCIrrigation controllerAutomationHargreavesEvapotranspirationCrop coefficientHeat fluxIrrigationMost of the water used by man goes to irrigation. A major part of this water is used to irrigate small plots where it is not feasible to implement full-scale Evapotranspiration based irrigation controllers. During the growth season crop water needs do not remain constant and varies depending on the canopy, growth stage and climate conditions such as temperature, wind, relative humidity and solar radiation. Thus, it is necessary to find an economic irrigation controller that can adapt the daily water application to the plant needs. The dramatic development of Programmable Logic Controllers, PLCs, and their rather affordable price has made it possible to use them as stand-alone irrigation controllers. In this paper a PLC is used to adapt the daily irrigation amount to actual ETc, using a Hargreaves-Samani type equation. This equation only requires temperature values to calculate Evapotranspiration. Once the ETc is calculated, then the PLC manages the irrigation according to the characteristics of the field, the irrigation equipment and the growth stage of the crop. First year results are very encouraging and indicate a 12% saving in irrigation water. It was also found that heat flux form the soil can influence canopy temperature.The development of this study was funded by the Fundação para a Ciência e a Tecnologia (FCT) research project PTDC/AGR-AAM/81271/2006: “Desenvolvimento dum controlador de rega adaptativo, autónomo e automático”.World Scientific and Engineering Academy and Society (WSEAS)Universidade do MinhoShahidian, S.Serralheiro, R. P.Teixeira, J. L.Santos, F. L.Oliveira, M. R. G.Costa, J. L.Toureiro, C.Haie, NaimMachado, R. M.2009-022009-02-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/18683eng1790-5079http://www.wseas.us/e-library/transactions/environment/2009/28-911.pdfinfo: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:RCAAP2023-07-21T12:06:46Zoai:repositorium.sdum.uminho.pt:1822/18683Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:57:34.289135Repositório 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 |
Drip irrigation using a PLC based adaptive irrigation system |
title |
Drip irrigation using a PLC based adaptive irrigation system |
spellingShingle |
Drip irrigation using a PLC based adaptive irrigation system Shahidian, S. PLC Irrigation controller Automation Hargreaves Evapotranspiration Crop coefficient Heat flux Irrigation |
title_short |
Drip irrigation using a PLC based adaptive irrigation system |
title_full |
Drip irrigation using a PLC based adaptive irrigation system |
title_fullStr |
Drip irrigation using a PLC based adaptive irrigation system |
title_full_unstemmed |
Drip irrigation using a PLC based adaptive irrigation system |
title_sort |
Drip irrigation using a PLC based adaptive irrigation system |
author |
Shahidian, S. |
author_facet |
Shahidian, S. Serralheiro, R. P. Teixeira, J. L. Santos, F. L. Oliveira, M. R. G. Costa, J. L. Toureiro, C. Haie, Naim Machado, R. M. |
author_role |
author |
author2 |
Serralheiro, R. P. Teixeira, J. L. Santos, F. L. Oliveira, M. R. G. Costa, J. L. Toureiro, C. Haie, Naim Machado, R. M. |
author2_role |
author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Shahidian, S. Serralheiro, R. P. Teixeira, J. L. Santos, F. L. Oliveira, M. R. G. Costa, J. L. Toureiro, C. Haie, Naim Machado, R. M. |
dc.subject.por.fl_str_mv |
PLC Irrigation controller Automation Hargreaves Evapotranspiration Crop coefficient Heat flux Irrigation |
topic |
PLC Irrigation controller Automation Hargreaves Evapotranspiration Crop coefficient Heat flux Irrigation |
description |
Most of the water used by man goes to irrigation. A major part of this water is used to irrigate small plots where it is not feasible to implement full-scale Evapotranspiration based irrigation controllers. During the growth season crop water needs do not remain constant and varies depending on the canopy, growth stage and climate conditions such as temperature, wind, relative humidity and solar radiation. Thus, it is necessary to find an economic irrigation controller that can adapt the daily water application to the plant needs. The dramatic development of Programmable Logic Controllers, PLCs, and their rather affordable price has made it possible to use them as stand-alone irrigation controllers. In this paper a PLC is used to adapt the daily irrigation amount to actual ETc, using a Hargreaves-Samani type equation. This equation only requires temperature values to calculate Evapotranspiration. Once the ETc is calculated, then the PLC manages the irrigation according to the characteristics of the field, the irrigation equipment and the growth stage of the crop. First year results are very encouraging and indicate a 12% saving in irrigation water. It was also found that heat flux form the soil can influence canopy temperature. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-02 2009-02-01T00:00:00Z |
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 |
http://hdl.handle.net/1822/18683 |
url |
http://hdl.handle.net/1822/18683 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1790-5079 http://www.wseas.us/e-library/transactions/environment/2009/28-911.pdf |
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.publisher.none.fl_str_mv |
World Scientific and Engineering Academy and Society (WSEAS) |
publisher.none.fl_str_mv |
World Scientific and Engineering Academy and Society (WSEAS) |
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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1799132364479135744 |