Lennon Brandão Freitas do Nascimento

EVALUATION OF THE IMPACT OF A REAL-TIME MONITORING SYSTEM ON THE OPERATIONAL EFFICIENCY OF NOTEBOOK TESTING LINES

Afonso Aguiar de Carvalho, Thiago Almeida Teixeira, Antony Alexsandrey Marques de Souza, Celice Nunes de Carvalho et autres

The growing complexity of industrial processes, especially in automated testing scenarios, has required technological solutions capable of providing greater visibility, traceability, and operational reliability on the production line. In this context, the absence of digitized monitoring and the heterogeneity of data sources …

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Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River

Thiago Almeida Teixeira, Lennon Brandão Freitas do Nascimento, Wallace Cavalcante, Ingrid Mayumi Fonseca Ono et autres

Monitoring water quality in the Amazon River remains a significant challenge due to limited accessibility, high sediment loads, intermittent connectivity, and the lack of continuous data in remote regions. This study presents the development and experimental validation of an IoT-based system for …

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Fine Time Measurement Protocol for Distance Estimation: Practical Analysis and Experimental Evaluation in Industrial Environments

Leandro Henrique de S. Carrascosa, Rubens de Andrade Fernandes, Lennon Brandão Freitas do Nascimento, Samuel Bruno Torres Rêgo et autres

The Fine Time Measurement (FTM) protocol, defined by the IEEE 802.11-2016 standard, introduces a bidirectional ranging approach to improve Wi-Fi positioning accuracy. Nevertheless, real-time distance measurements using FTM are susceptible to several sources of error. In this study, we conducted exploratory tests …

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DESENVOLVIMENTO DE UM DISPOSITIVO PARA ANÁLISE DE ESTABILIDADE DA REDE E PROTEÇÃO DE EQUIPAMENTOS ELÉTRICOS EM RESIDÊNCIAS

Wagner dos Santos Farah, Israel Gondres Torné, Daniel Guzmán del Río, Lennon Brandão Freitas do Nascimento et autres

FloatingBlue: A Delay Tolerant Networks-Enabled Internet of Things Architecture for Remote Areas Combining Data Mules and Low Power Communications

Ruan C. M. Teixeira, Celso B. Carvalho, Carlos T. Calafate, Edjair Mota et autres

Monitoring vast and remote areas like forests using Wireless Sensor Networks (WSNs) presents significant challenges, such as limited energy resources and signal attenuation over long distances due to natural obstacles. Traditional solutions often require extensive infrastructure, which is impractical in such environments. …

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CRIAÇÃO DE BASE DE DADOS DE SINAIS DE RÁDIO PARA APLICAÇÕES DA TÉCNICA DE DIRECTION FINDING COM BLUETOOTH

Daniel Deyvison, Gabriel Talles, João Lucas, João Sombra et autres

Estimação do Ângulo de chegada utilizando Bluetooth 5.1 e redes neurais profundas

Lennon Brandão Freitas do Nascimento, Celso B. Carvalho, Rubens de Andrade Fernandes, Ruan C. M. Teixeira et autres

Indoor positioning systems have been driven by the increased use of mobile devices and the need for precise location or orientation in various sectors. Bluetooth Low Energy (BLE) 5.1 stands out for spatial orientation tasks due to its low energy consumption and …

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Angle of Arrival estimation using Bluetooth 5.1 and deep networks

Lennon Brandão Freitas do Nascimento, http://lattes.cnpq.br/0238273463141097

Os sistemas de posicionamento indoor ganharam destaque impulsionados pelo aumento do uso de dispositivos móveis e pela necessidade de localização ou orientação precisa em diversos setores. O Bluetooth Low Energy (BLE) 5.1 destacase para tarefas de orientação espacial devido ao baixo consumo …

A Demand Forecasting Strategy Based on a Retrofit Architecture for Remote Monitoring of Legacy Building Circuits

Rubens de Andrade Fernandes, Raimundo Cláudio Souza Gomes, Carlos Tavares da Costa, Celso B. Carvalho et autres

Energy demand forecasting is crucial for planning and optimizing the use of energy resources in building facilities. However, integrating digital solutions and learning techniques into legacy buildings presents significant challenges due to limited or outdated resources, hampering predictive analytics in these buildings …

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Analysis of the Reduction of Ergonomic Risks through the Implementation of an Automatic Tape Packaging Machine

Ruan C. M. Teixeira, Walter P. S. Guimarães, Josiel Gomes Ribeiro, Rubens de Andrade Fernandes et autres

Many industrial sectors still lack automation resources to optimize their production processes, aiming to make manufacturing leaner and offer better working conditions to operators. Without these improvements, workers can suffer physical and even psychological damage from the ergonomic risks of the activities …

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Análise de anomalias em medições de parâmetros elétricos em motores trifásicos numa fábrica de prensagem metálica / Analysis of anomalies in electrical parameters measurements in three-phase motors in a metal pressing plant

Israel Gondres Torné, Jhonattan Farah Signorelli, Edry Antonio García Cisneros, Lennon Brandão Freitas do Nascimento et autres

Os motores elétricos trifásicos são muito utilizados nas empresas pelas suas variadas aplicações, neles é possível realizar inspeções preditivas pois possuem várias características que podem ser mensuradas como “termômetro” do seu estado de operação. As inspeções preditivas em motores elétricos podem envolver …

Análise de anomalias em medições de parâmetros elétricos em motores trifásicos numa fábrica de prensagem metálica / Analysis of anomalies in electrical parameters measurements in three-phase motors in a metal pressing plant

Israel Gondres Torné, Jhonattan Farah Signorelli, Edry Antonio García Cisneros, Lennon Brandão Freitas do Nascimento et autres

Os motores eletricos trifasicos sao muito utilizados nas empresas pelas suas variadas aplicacoes, neles e possivel realizar inspecoes preditivas pois possuem varias caracteristicas que podem ser mensuradas como “termometro” do seu estado de operacao. As inspecoes preditivas em motores eletricos podem envolver …