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Temperature, pH, and conductivity control of the nutrient solution of an hydroponic greenhouse
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Orientador(es)
Resumo(s)
One of the aspects of modern agriculture is characterised by a culture without soil (hydroponic
cultures). These culture techniques are identified by possessing automatic control systems to
control the nutrient solution. In first hydroponic cultures this control was accomplished by “on-
off” analog controllers that applied a single control law implemented in hardware. Therefore,
the changes of the control law resulted in the change of all interface electronics. In digital
control implemented by micro-controllers the alteration of such control law is easily performed
by changing only a computer program, leaving untouched all the interface hardware. In this
way, the use and substitution of the control strategy is improved, as well, the use of advanced
control strategies.
Descrição
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Contexto Educativo
Citação
Teixeira, C. A.; Ruano, A. E. Temperature, pH, and Conductivity Control of the Nutrient Solution of an Hydroponic Greenhouse, Trabalho apresentado em 6th Portuguese Conference on Automatic Control (Controlo 2004), In 6th Portuguese Conference on Automatic Control (Controlo 2004), Faro, 2004.