Encontrados 18 documentos, a visualizar página 1 de 2
Optimization approaches in electric machine design: insights from a bibliometri...
Nascimento, Cecilia Pagnozzi do; Silvério, Ana Cristina; Baptista, Bruno; Carvalho, José Augusto; Bazzo, Thiago; Ferreira, Ângela P.Optimizing the design of electric machines is a complex task due to the large number of interrelated geometric and physical parameters that influence performance, efficiency, cost, and sustainability. Numerous deterministic and stochastic optimization techniques have been developed to address these challenges, each presenting distinct advantages and limitations. Deterministic approaches, though computationally ...
Image Transfer over MQTT in IoT: Message Segmentation and Encryption for Remote...
Valente, David; Brito, Thadeu; Correia, Márcio; Carvalho, José Augusto; Lima, JoséThe Internet of Things (IoT) has revolutionized how objects and devices interact, creating new possibilities for seamless connectivity and data exchange. This paper presents a unique and effective method for transferring images via the Message Queuing Telemetry Transport (MQTT) protocol in an encrypted manner. The image is split into multiple messages, with each carrying a segment of the image, and employ top-n...
A data logger for educational purposes of a laboratory chemical reactor: an IoT...
Lima, José; Brito, Thadeu; Ferreira, Olga; Afonso, Maria João A.P.S.; Pinto, Vítor H.; Carvalho, José Augusto; Costa, Paulo Gomes daThis paper presents the development of an acquisition system and data logger from an existing set of three continuous stirred-tank reactors in series. The reactors are currently used in chemical engineering educational laboratories to perform kinetic and tracer experiments. In this sense, to accomplish the store data process, the volumetric flow rate and the concentration of tracer, reactants and/or products of...
Data acquisition, conditioning and processing system for a wearable-based biost...
Oliveira, Leonardo Sestrem de; Kaizer, Raul; Gonçalves, João; Leitão, Paulo; Teixeira, João Paulo; Lima, José; Franco, Tiago; Carvalho, José AugustoData acquisition by electromyography, as well as the muscle stimulation, has become more accessible with the new developments in the wearable technology and medicine. In fact, for treatments, games or sports, it is possible to find examples of the use of muscle signals to analyse specific aspects related, e.g., to disease, injuries or movement impulses. However, these systems are usually expensive, does not int...
Real airplane cockpit development applied to engineering education: a project b...
Carvalho, José Augusto; Mendes, Andre C.; Brito, Thadeu; Lima, JoséEngineering education, the process of teaching knowledge and principles to the professional practice of engineering, can be done by resorting to several methodologies. Project Based Learning is a teaching method that allows students to get knowledge and skills by developing and solving complex problems or challenges, supported by a supervisor. In the presented work, a real airplane cockpit development is used a...
Real cockpit proposal for flight simulation with airbus A32x models: an overvie...
Carvalho, José Augusto; Mendes, Andre C.; Brito, Thadeu; Lima, JoséThis paper describes the several steps to build an elaborate flight simulator cockpit, where the hardware is designed based on Mechatronic principles and the proposed software was developed using agile methodologies to create a Cyber-Physical System (CPS). Furthermore, this research attempts to simulate the real environment from an aircraft as close as possible with a real scale developed cockpit. Based on this...
Towards distance teaching: a remote laboratory approach for modbus and IoT expe...
Carvalho, José Augusto; Mendes, Andre C.; Brito, Thadeu; Lima, JoséRemote laboratories are of extraordinary importance for students that cannot attend classroom lessons. Once Automation and industrial networks are topics of electrical engineering that should be studied and experimented with by students in a practical way, this paper presents a developed tool that students can use to access the laboratory equipment from outside. It has as an advantage the capacity of handling s...
Modular data acquisition architecture for thin-film sensors surfaces
Rodrigues, Nelson; Lima, José; Rodrigues, Pedro João; Carvalho, José Augusto; Laranjeira, Jorge; Maidana, Wellington; Leitão, PauloThin-film sensors surfaces are becoming popular to collect data in several specific and complex processes, namely plastic injection or metal stamping, allowing the digitization of such processes through the use of Internet of Things technologies. A particular challenge in such thin-film sensors surfaces is the data acquisition and signal conditioning system, which implementation is complex due to the characteri...
Patente Nacional nº 107499 - Sistema que tem como função otimizar o funcionamen...
Lima, José; Carvalho, José AugustoA invenção refere-se a um sistema que tem como função otimizar o funcionamento de sistemas solares térmicos (SST) para águas quentes sanitárias (aqs). Maximiza a eficiência do sst reduzindo significativamente a utilização da fonte de energia secundária para o aquecimento da água. O sistema faz uma gestão inteligente da utilização da fonte de energia secundária de forma a suprimir a sua utilizaç...
Avaliação do desempenho de redes PROFIBUS-DP suportada em técnicas de injecção ...
Carvalho, José AugustoLimitações de natureza tecnológica condicionaram o desenvolvimento dos sistemas de controlo a uma abordagem que conduziu à centralização da sua estrutura. Com a evolução da tecnologia esta abordagem alterou-se e actualmente muitas das estruturas de controlo assentam sobre o paradigma da distribuição de tarefas. Neste contexto, as redes de comunicação desempenham um papel fundamental na estrutura e na operação d...