Dissertação PPG.EGPSA

URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/3

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Assunto: search.filters.subject.Interferência eletromagnética

Resultados da Pesquisa

Agora exibindo 1 - 2 de 2
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    Melhoria de desempenho em equipamentos de manufatura: um estudo de caso sobre a redução de queimas de placas eletrônicas em máquinas Okuma
    (Instituto de Tecnologia e Educação Galileo da Amazônia, 2024) SANTOS, James Silva dos; BRITO JUNIOR, Jorge de Almeida
    This study addresses the performance improvement of Computer Numerical Control Okuma machines at Musashi da Amazônia Ltda., focusing on reducing failures in electronic boards caused by electromagnetic interference in the manufacturing environment. The primary objective was to decrease the incidence of these failures, enhance operational efficiency, and reduce maintenance costs. The methodology involved analyzing historical data, identifying interference sources, and installing electromagnetic interference filters. As a result, the filters significantly reduced failures, ensuring greater operational stability and lower costs. This work highlights the importance of power quality management for industrial efficiency.
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    Avaliação de imunidade eletromagnética radiada do protocolo IOT LORA
    (Instituto de Tecnologia e Educação Galileo da Amazônia, 2024) RIBEIRO, Jhonatan; SANTOS, Eliton Smith dos
    Industrial automation, historically based on wired technologies, has evolved toward wireless solutions, driven by the increasing interconnection of devices and the need to overcome logistical and range limitations. In Industry 4.0, wireless communication plays a central role by integrating sensors, actuators, and control systems into an intelligent production environment. This integration enables real-time data collection and analysis, facilitating automation, optimization, and process flexibility. Despite the benefits, adopting wireless technologies faces significant challenges, particularly electromagnetic interference (EMI), which can compromise the operation of devices and systems. This study presented an analysis of the electromagnetic immunity of the LoRa protocol, using the Heltec V2 board, which incorporates the SX1278 chip, to evaluate its robustness in environments subject to electromagnetic interference. The tests, conducted according to the IEC 61000-4-3 standard, identified critical failure frequencies such as 232.4 MHz, 412 MHz, and 615.2 MHz under different parameter configurations. In these conditions, partial or total communication loss was observed, depending on the intensity of the irradiated field, demonstrating that different configurations can significantly impact the system's immunity. Solutions such as using robust protocols, including LoRaWAN and NB-IoT, spectral spreading techniques, electromagnetic shielding, and filters can mitigate the effects of EMI. Furthermore, future strategies include developing adaptive algorithms to dynamically adjust communication parameters and signal failures, enhancing the resilience and reliability of the LoRa protocol in complex industrial environments. The results of this research contribute to improving wireless communications in Industry 4.0, highlighting LoRa as an essential technology for robust and efficient connectivity.