Desenvolvimento de um controlador de irrigação para áreas experimentais / Development of an irrigation controller for experimental areas

AUTOR(ES)

Antonio Pires de Camargo

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

29/08/2012

RESUMO

Irrigation scheduling at experimental areas is determined by several factors, which are mainly related to features of each unit (container or bed) and criteria set by researchers. Many times the experimental areas are greenhouses and depending on the research may be necessary provide mechanisms for monitoring sensors and controlling actuators on each unit in order to supply individual water requirements. Once irrigation requirements vary in time and among units, this individual irrigation management becomes a repetitive and laborious task when sensors and actuators are operated manually. Commercial systems for automated irrigation controlling in Brazil can be characterized in two extremes, when applied on experimental areas. Irrigation controllers sold at affordable and feasible prices have basic functionalities and don\ t have enough versatility for using at most of irrigation researches. In the other hand, there are some sophisticated solutions for automating irrigation systems which have plenty of technology and could be implemented at any experimental area. Although, these kind of automated systems are very expensive and most of times are unfeasible for using at irrigation researches. Based on the summarized situation, this thesis presents the development of an automated system comprised of microprocessed modules and Supervisory Control and Data Acquisition (SCADA), implemented for actuators controlling and sensor\ s data acquisition at irrigation experimental areas. The first research\ s stage describes the development of an openloop control system that was a dedicated solution for actuators controlling. The second stage described a closed-loop control system designed for irrigation controlling at experimental areas. The developed solutions have features of hardware and software that ensure versatility, scalability, and reliability.

ASSUNTO(S)

automação automation instrumentation irrigação microcontrolador microcontroller

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