Tipo di tesi | Tesi di laurea magistrale | ||||||||||||||||||||||||||||||
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Autore | BONACINI, ENRICO | ||||||||||||||||||||||||||||||
URN | etd-03072018-172830 | ||||||||||||||||||||||||||||||
Titolo | Progetto e realizzazione di un flussimetro usando un interferometro self-mixing a bassa coerenza. | ||||||||||||||||||||||||||||||
Titolo in inglese | Design and realization of a flowmeter using a self-mixing low-coherence interferometer | ||||||||||||||||||||||||||||||
Struttura | Dipartimento di Ingegneria | ||||||||||||||||||||||||||||||
Corso di studi | ELECTRONICS ENGINEERING - Ingegneria Elettronica (D.M.270/04) | ||||||||||||||||||||||||||||||
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Data inizio appello | 2018-04-12 | ||||||||||||||||||||||||||||||
Disponibilità | Accessibile via web (tutti i file della tesi sono accessibili) | ||||||||||||||||||||||||||||||
Riassunto analitico
In this thesis we present a fiber-based low-coherence self-mixing interferometer for the measurement of flow in pipe. This system relies on a single-arm approach which guarantees advantages over the traditional two arms interferometer. The Single-arm configuration is much easier to align, it is able to reject common mode vibrations and provides higher stability. |
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Abstract
In this thesis we present a fiber-based low-coherence self-mixing interferometer for the measurement of flow in pipe. This system relies on a single-arm approach which guarantees advantages over the traditional two arms interferometer. The Single-arm configuration is much easier to align, it is able to reject common mode vibrations and provides higher stability. The system exploits a low-coherence source for investigating the flow of scattering particles only in a fixed region located close to duct of the wall. The signal generated from the low-coherence source is processed by the signal-conditioning electronics. A novel scheme which performs DC current rejection is presented. The aim of such solution is to automatically cancel the continuous component of the current in order to facilitate the acquisition of the Doppler signal. Results highlight that the system is able to perform high amplification of AC components while performing high suppression of DC components. The system is thus suitable for flow measurements in laminar flow regime. |
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