Thesis etd-06062012-203504 |
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Thesis type
Tesi di laurea specialistica
Author
MAZZA, ANNALISA
URN
etd-06062012-203504
Thesis title
BLOOD FLOW SENSOR BASED ON CTA: MODELING AND VALIDATION
Department
INGEGNERIA
Course of study
INGEGNERIA BIOMEDICA
Supervisors
relatore Prof.ssa Menciassi, Arianna
relatore Sette, Mauro
relatore Sette, Mauro
Keywords
- Anemometry
- CTA
- flowmeter
- velocity measurements
- Wheatstone bridge
Graduation session start date
17/07/2012
Availability
Withheld
Release date
17/07/2052
Summary
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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