Plc Automation
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. LOW-COST AUTOMATION OF FERTIGATION WITH PROGRAMMABLE LOGIC CONTROLLER AND GAS-FILLED SENSORS
ABSTRACT The aim of this study was to develop and evaluate a low-cost automation system for management of different fertigation regimes in tomato plants (Solanum lycopersicum L.) grown in a protected environment. The system consisted of an irrigation controller coupled to substrate moisture sensors and to a programmable logic controller (PLC). Four water reg
Eng. Agríc.. Publicado em: 2017-04
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2. Metodologia para implementação de controle supervisório modular local em controladores lógicos programáveis / Methodology for implementation of supervisory control local modular in programmable logic control
Currently, manufacturing automation has assumed an increasingly important role within the industry and the problems of automated control systems have become increasingly complex. Thus, the traditional use of empirical methods heavily base on the experience of the programmer can lead to inappropriate or ineffective solutions. In this case, the Supervisory Con
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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3. Automação do processo de soldagem a laser (Nd:YAG) para confecção das sementes de Iodo-125 utilizadas em braquiterapia / Development of an automation system for iodine-125 brachytherapy seed production by (Nd:YAG) laser welding
The aim of this work is to develop an automation system for iodine-125 radioactive seed production by (Nd:YAG) laser welding, which has been used successfully in Low Dose Rate (LDR) brachytherapy treatment. This small seed consists of a welded titanium capsule, with 0.8mm in diameter and 4.5mm in length, containing iodine-125 adsorbed onto a silver rod. The
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/09/2010
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4. Cibersegurança em sistemas de automação em plantas de tratamento de água. / Cibersecurity in automation systems in water treatment plants.
Currently, information security is a constant concern of the several institutions and countries that use computing resources for communication and service offering purposes. Protection methods and countermeasures for traditional networks such as firewalls and intrusion detectors are known and ordinarily used. The same goes for control systems and data acquis
Publicado em: 2010
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5. Study of a cooling system with air forced with monitoring of electrical energy consumption / Estudo de um sistema de resfriamento com ar forçado com monitoramento do consumo de energia eletrica
This work is a study of a classical controller implementation using tuning method referred to as IMC (Internal Model Control), aimed at reducing electrical energy consumption that proceed the appropriate relation between this consumption and cooling time of the cooling process with forced air. For this, the supervisory system installed is able to manipulate
Publicado em: 2010
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6. Desenvolvimento e implementação de um sistema de supervisão e controle residencial
With the technological progress the people are more and more looking for convenience, comfort and safety to your homes. The residential automation is winning space on the market not only by the status and modernity that provide, but also to allow a better use of natural resources, reducing the expense to keep up a residence. This work shows the development o
Publicado em: 2009
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7. Ambiente computacional paradesenvolvimento de aplicações de controladores lógicos programáveis baseado em linguagens SFC e ST
This work proposes an environment for programming programmable logic controllers applied to oil wells with BCP type method of artificially lifting. The environment will have an editor based in the diagram of sequential functions for programming of PLCs. This language was chosen due to the fact of being high-level and accepted by the international standard IE
Publicado em: 2009
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8. Desenvolvimento de um sistema de automação para uma planta de inertização de resíduos por plasma
Os processos tradicionais de tratamento de lixos perigosos são questionáveis por gerar outros resíduos que afetam negativamente à saúde das pessoas. Como tentativa de minimização desses problemas foi desenvolvido um sistema de tratamento de resíduos perigosos por plasma térmico, uma tecnologia adequada por produzir altas temperaturas, impedindo a fo
Publicado em: 2009
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9. Desenvolvimento de metodologia de aplicação de redes de Petri para automação de sistemas industriais com controladores lógicos programáveis (CLP). / Development of methodology of application of Petri Net for automation of industrial systems with programmable logic controllers.
Due to the needs of the modern world, the systems of automation have increased their complexity, forcing the development of ever more powerful engineering tolls to shape and analyse them. In systems of industrial automation, the Programmable Logic Controllers (PLCs), have been widely applies. The PLCs are generally programmed through the use of the Ladder pr
Publicado em: 2006
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10. Sistema elétrico automatizado objetivando otimização na alimentação de centros de consumo. / Automated electrical system aiming optimal supply at consumption centers.
This study is about the usage of the Petri Net as an analysis and development tool of the automation of a pilot micro plant of 130 kW. The project was carried out in the energy quality laboratory center at the Escola Politécnica de São Paulo. Its main goal was to study the most important variables related to the quality of energy and the functionalities of
Publicado em: 2006
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11. Software Scada as platform for the intelligent rationalization of electric energy in build automation / Software Scada como plataforma para a racionalização inteligente de energia elétrica em automação predial
This work proposal is to develop an intelligent system, that using building automation technology, and through the monitoring of variables generally neglected by traditional control systems, together with the strategy of a specialist control, generates a considerable economy on the consumption of electric energy in closed environments with air conditioning d
Publicado em: 2006
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12. Norma IEC61131-3: aspectos históricos, técnicos e um exemplo de aplicação. / IEC61131-3 standard: historical and technical aspects and an application example.
Este trabalho traça um panorama dos PLCs e tecnologias associadas em momentos anteriores e posteriores à publicação da norma IEC61131-3 e discute aspectos relativos à sua adoção. A aplicação deste norma pode trazer ganhos de produtividade no projeto e implementação de sistemas de automação industrial. Esta dissertação apresenta o caso do "Proj
Publicado em: 2005