Tesi etd-01272026-105144 |
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Tipo di tesi
Tesi di laurea magistrale
Autore
SCARSELLI, MIREA
URN
etd-01272026-105144
Titolo
Progettazione, sviluppo e validazione di una piattaforma hardware portatile per sistemi di tomografia impedenza elettrica
Dipartimento
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
INGEGNERIA BIOMEDICA
Relatori
relatore Prof. Tognetti, Alessandro
relatore Ing. Tesconi, Mario
relatore Ing. Marinai, Carlotta
relatore Ing. Tesconi, Mario
relatore Ing. Marinai, Carlotta
Parole chiave
- Arduino
- Electrical Impedance Tomography
- Howland circuit
- INA333
- PCB (Printed Circuit Board)
- piezoresistive sensor
- portable circuit
Data inizio appello
23/02/2026
Consultabilità
Non consultabile
Data di rilascio
23/02/2029
Riassunto (Inglese)
Riassunto (Italiano)
This thesis project proposes a simple and open-source solution for the development of a portable electrical impedance tomography system. The circuit is designed to measure resistance variations caused by pressures applied with different weights on a piezoresistive sensor.
The system uses readily available, low-cost electronic components, including Arduino, INA333 instrumentation amplifiers, and a custom PCB developed to handle both sensor stimulation through current injection and differential voltage measurements from the pairs of electrodes placed on the sensor.
The PCB includes a Howland current source and three multiplexers: two dedicated to stimulation and one for differential voltage measurement. The voltages are acquired in differential mode and then processed by INA333 instrumentation amplifiers; in this configuration, they are not amplified but filtered from noise, resulting in cleaner and more reliable signals.
The system uses readily available, low-cost electronic components, including Arduino, INA333 instrumentation amplifiers, and a custom PCB developed to handle both sensor stimulation through current injection and differential voltage measurements from the pairs of electrodes placed on the sensor.
The PCB includes a Howland current source and three multiplexers: two dedicated to stimulation and one for differential voltage measurement. The voltages are acquired in differential mode and then processed by INA333 instrumentation amplifiers; in this configuration, they are not amplified but filtered from noise, resulting in cleaner and more reliable signals.
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