Dissertações
URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/174
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Item Desenvolvimento de um Sistema de Baixo Custo para Monitoramento da Qualidade do Ar Usando Tecnologia Embarcada(Instituto de Tecnologia, 2018) MELLO, José Carlos Nunes de; LEITE, Jandecy CabralThe objective of this work was to develop a low-cost system for monitoring air quality using embedded technology, focusing on the use of the Arduino UNO board for Environmental Monitoring. Commercially available sensors were used, including the DHT11 temperature sensor, BMP180 atmospheric pressure sensor, MICS 2614 ozone sensor, MICS 2714 nitrogen dioxide sensor, MQ-7 carbon monoxide sensor and PM2.5 PPD42 NS particle sensor. The methodology included a literature review on air pollution and Arduino UNO technologies, in addition to the construction and testing of a functional prototype, composed of sensors, a micro SD reader module, an LCD display and a contact matrix, interconnected to the Arduino board. The research was classified as experimental and applied. Of the six indicators proposed, only the NO2 and particulate matter data could not be compared to those of a professional station due to technical failures in the latter's meters. The results showed that the use of Arduino for air quality monitoring provides a more affordable solution than conventional instruments, ensuring a satisfactory level of reliability, practicality and flexibility. The study also identified challenges faced during implementation and proposed improvements and recommendations for future research in the area of atmospheric sensing. It is concluded that the developed system demonstrated viability and met the established objectives.Item Influência do Efluente Gerado por uma Termoelétrica Lançado em um Corpo D’Água – Estudo de Caso na UTE Manauara – Manaus/AM(Universidade Federal do Pará, 2015) FRANÇA, Alcimar de Jesus; Prof. Dr. Ronaldo Lopes Rodrigues MendesThermal energy is crucial for the development of the Northern region but presents environmental impacts due to its generation process. This study analyzes the influence of effluents generated by the Manauara Thermoelectric Plant in a water body, assessing effluent quality before and after the transition from heavy fuel oil to natural gas. Environmental monitoring considered parameters such as Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD), comparing them with the standards established by CONAMA 430/2011. The study also discusses the importance of environmental management and continuous monitoring in minimizing environmental impactsItem Metodologia para Diagnosticar a Qualidade de Energia Elétrica Referente à Distorção Harmônica em Sistema Trifásico de Baixa Tensão Utilizando Lógica Fuzzy(Universidade Federal do Pará, 2010) GONÇALVES, Benevaldo Pereira; COSTA JÚNIOR, Carlos Tavares daThis work emphasizes the importance of monitoring and diagnosing the quality of electric power from the viewpoint of harmonic distortion present in the electrical installation in low voltage three-phase system using a methodology to analyze and diagnose the level of harmonic disturbances evaluating the overall indicator of distortion Harmonic (THD), supported by an expert system based on a Fuzzy inference system.