Raspberry Pi based spectral analyzer

• Autor(a) principal: Nunes, Bruno Alexandre Pereira
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/31261
• topic: Spectral analyzer; Raspberry Pi; Vibration analysis

With the technological evolution, more and more low-cost and highly exible development solutions are appearing on the market, making them extremely interesting tools to be used in a multitude of projects. Two of this devices, a Raspberry Pi and a audio card, were chosen in order to undertake the main objective of this project, which is the development of a low-cost spectrum analyzer to be used in vibration analysis. The main purpose of the created solution is to tackle the already commercial avaible devices that are excessively expensive and have little flexibility. The data acquisition is done using the audio card and all the signal analyzer algorithms are run by the Raspberry Pi, being both controlled through a graphic interface also developed within this project. After conducting a few tests it was possible to perceive the capabilities and limitations of the solution created, as well as some possible problems. The solution showed promising despite some of its limitations.