Tesi etd-06062012-203504 |
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Tipo di tesi
Tesi di laurea specialistica
Autore
MAZZA, ANNALISA
URN
etd-06062012-203504
Titolo
BLOOD FLOW SENSOR BASED ON CTA: MODELING AND VALIDATION
Dipartimento
INGEGNERIA
Corso di studi
INGEGNERIA BIOMEDICA
Relatori
relatore Prof.ssa Menciassi, Arianna
relatore Sette, Mauro
relatore Sette, Mauro
Parole chiave
- Anemometry
- CTA
- flowmeter
- velocity measurements
- Wheatstone bridge
Data inizio appello
17/07/2012
Consultabilità
Non consultabile
Data di rilascio
17/07/2052
Riassunto
Hot wire anemometry has always been a very accurate method for flow measurements. In maintaining the wire at constant temperature, the heat aexchange is only due to the convection phenomenon. The constant temperature is guarantee by inserting the wire in a Wheatstone bridge connected to a feedback amplifier which restores the equilibrium when the value of the wire resistance changes.
The main goals of this study are to evaluate the performances of a platedsensor (RTD sensor used as a flowmeter) when it replaces the wire in Constant Temperature Anemometer (CTA) configuration, and to maximize its sensitivity by varying its nominal resistance value and its geometry.
For biomedical application, it is important to heat the sensor below 40°C to avoid the hemolisis process.
The main goals of this study are to evaluate the performances of a platedsensor (RTD sensor used as a flowmeter) when it replaces the wire in Constant Temperature Anemometer (CTA) configuration, and to maximize its sensitivity by varying its nominal resistance value and its geometry.
For biomedical application, it is important to heat the sensor below 40°C to avoid the hemolisis process.
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