Navegando por Assunto "Automation"

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Acesso aberto (Open Access)
Implementação de um sistema supervisório em unidades geradoras de energia elétrica de sistemas isolados instalados em municípios do estado do Amazonas
(Universidade Federal do Pará, 2021-08-30) SILVA, Jefferson Emilio Maciel da; LEITE, Jandecy Cabral; http://lattes.cnpq.br/7279183940171317
This master's dissertation consists of an exploratory research carried out by monitoring the maintenance activities carried out in the Thermoelectric Power Plants installed in the cities of the State of Amazonas, with the objective of implementing a monitoring system for electrical quantities coming from engines, also called Engenies Electric Power. This is a field research with qualitative approaches, taking into account the implementation of an automated system to capture the variations in electrical quantities (Voltage, Current, Power and Power Factor) of these energy generating units. The capture of these data, which are the variations of electrical quantities, occurs with the use of PLC, transducers, Modem, among other equipment, which are stored in a database (computer) that using a Supervisory System modeled for this purpose, providing the visualization of these data, in real time, in a friendly and interactive interface. From the monitoring of these data, via a Supervisory System, and with the use of data manipulation tools from the SCADA system, an interface for the generation of graphics was modeled, which significantly contributed to the interpretation of these data. And in addition, make it available remotely, to everyone involved in the activities of the plants, thus being able to access the Supervisory System from anywhere in the world, through the internet.
Acesso aberto (Open Access)
NFPR - Um Coletor automático de amostras de baixo custo
(Universidade Federal do Pará, 2021-07-23) MATOS JÚNIOR, Berilo Costa de; RIBEIRO, Nielson Fernando da Paixão (in memorian); http://lattes.cnpq.br/0755443458423442; MACÊDO, Emanuel Negrão; http://lattes.cnpq.br/8718370108324505
The evolution of automation in industrial processes has brought many benefits to humanity. The use of automatic systems has been growing and becoming more and more frequent in machines and projects. Aiming at greater production, reliability and cost reduction. Due to the high value of technological equipment, it is necessary to seek more financially viable alternatives to obtain efficient and accurate results. An issue commonly encountered in chemical engineering laboratories is the difficulty of collecting samples over a long period, eg experiments to determine adsorption breakthrough curve. Thus, this work proposes to develop a low-cost equipment, in which a liquid can be collected automatically. From a microcontroller, the Arduino Mega, it is possible to interconnect the programming technique with an open source language based on C++. Developing a command algorithm for the control and operation of stepper motors and solenoid valve. Several tests were performed for accuracy of positioning and volume collection for: 5, 10 and 15 ml. In which, the prototype presented good results defined by the mean and standard deviation of the collected samples. The implementation of this equipment tends to improve the working conditions of users, ensuring better accuracy, avoiding waste by manual collection and bringing convenience. It is observed that the prototype has a monetary value up to ten times lower than the equipment consolidated in the market. Demonstrating that it is a viable and promising proposal for laboratories that need automatic volume collection.