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Development of embedded devices for automated acoustic resonance analysis in material quality classification.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Signals and Systems Group.
2014 (English)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

In this report we investigate whether an embedded system can be used to determine materials quality by analysing the acoustic resonance frequencies.

Through experiments the necessary specifications are established and suitable circuits constructed. Signal analysis is performed by a FFT-based algorithm.

We have verified that the system is succesful in detecting the five strongest resonance frequencies and list these in order of amplitude. By using embedded devices, it's possible to lower the cost of purchase as well as power consumption dramatically compared to alternative solutions.

Abstract [sv]

I denna rapport undersöker vi hurvida ett inbyggt system kan användas för att bestämma materialkvalité genom analys av akustiska resonansfrekvenser.

Genom experiment fastställs de specifikationer systemet måste ha, varefter lämpliga kretsar konstrueras. Med hjälp av en FFT-baserad algoritm utförs viss signalanalys.

Vi har verifierat att systemet framgångsrikt kan detektera de fem starkaste resonansfrekvenserna och lista dessa efter amplitud. Genom användandet av inbyggda system kan energiförbrukningen och inköpskostnaden bli mycket lägre än alternativa lösningar.

Place, publisher, year, edition, pages
2014. , 28 p.
Keyword [en]
signals analysis, embedded, devices, resonance frequencies, acoustic, quality
Keyword [sv]
signalbehandling, akustisk, resonansfrekvenser, inbyggda, system, kvalité
National Category
Signal Processing
URN: urn:nbn:se:uu:diva-234401ISRN: UTH-INGUTB-EX-E-2014/06-SEOAI: diva2:756589
Educational program
Bachelor Programme in Electrical Engineering
Available from: 2014-10-21 Created: 2014-10-17 Last updated: 2014-10-21Bibliographically approved

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