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Abstract(s)
Esta dissertação teve como principal objetivo produzir energia baseando-se nos conceitos de Energy Harvesting, que consiste em adquirir pequenas porções de energia para pequenas aplicações, através de transdutores eletromagnéticos de energia. Foram caracterizadas as vibrações presentes em automóveis e máquinas industriais, recorrendo a um acelerómetro de três eixos, cada um ligado a um módulo de aquisição desenvolvido na Universidade da Beira Interior. Através do Flux 2D, um software de elementos finitos, foram modelados e simulados exemplos académicos de transdutores presentes na literatura, em seguida optou-se por modelar e simular um novo modelo, após a análise dos resultados partiu-se para a construção de quatro protótipos diferentes, recorrendo a uma impressora 3D, concluindo-se qual era o que obtinha melhores resultados, fizeram-se pequenas alterações e aplicou-se juntamente com a placa de desenvolvimento CBC-EVAL-09 em que foi criado uma rede de sensores sem fios com um nó, utilizando eZ430-CC2500.
This dissertation has as main goal the study and application of concepts needed to harvest energy from vibrations using electromagnetic transducers. The energy harvested from the vibrations will be available to power systems developed with low energy requirements. The vibrations present in automobiles and industrial machines were characterized with a three axes accelerometer, connected to an acquisition module developed in the University of Beira Interior. Academic examples found in literature were simulated with the finite elements software tool Flux2D. A new model was proposed and simulated. The analysis of results supported the construction of four different prototypes. A 3D printer was used to rapidly prototype the harvesting devices. Later the development kit CBC-EVAL-09 was used to verify how the harvest device behaves when powering a network of wireless sensors developed with the eZ430-CC2500.
This dissertation has as main goal the study and application of concepts needed to harvest energy from vibrations using electromagnetic transducers. The energy harvested from the vibrations will be available to power systems developed with low energy requirements. The vibrations present in automobiles and industrial machines were characterized with a three axes accelerometer, connected to an acquisition module developed in the University of Beira Interior. Academic examples found in literature were simulated with the finite elements software tool Flux2D. A new model was proposed and simulated. The analysis of results supported the construction of four different prototypes. A 3D printer was used to rapidly prototype the harvesting devices. Later the development kit CBC-EVAL-09 was used to verify how the harvest device behaves when powering a network of wireless sensors developed with the eZ430-CC2500.
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Keywords
Dispositivos Eletromagnéticos e Recolha de Energia