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Tesi etd-06242016-121006


Thesis type
Tesi di laurea magistrale
Author
ANGELINI, ELENA
URN
etd-06242016-121006
Title
Development of a phonocardiography sensor to be integrated in a wearable system for hemodynamic parameters monitoring.
Struttura
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
INGEGNERIA BIOMEDICA
Commissione
relatore Prof. Dario, Paolo
tutor Ing. Rossi, Stefano
Parole chiave
  • hemodynamics
  • microphone
  • phonocardiography
Data inizio appello
15/07/2016;
Consultabilità
parziale
Data di rilascio
15/07/2019
Riassunto analitico
The aim of this work is the development of a sensor for the acquisition of phonocardiogram (PCG).<br>This activity was performed in the Advanced System Technology (AST)- Remote Monitoring group of STMicroelectronics, which is involved in the study and development of wearable systems for the continuous collection of physiological parameters.<br>In this contest of work, sensor is purposely designed for a future integration with other external sensors in order to create a wearable monitoring system for the estimation of several hemodynamic parameters.<br>An analog MEMS microphone is used for acquiring PCG, which is amplified and sampled by a microcontroller ADC channel. Data are then transmitted to a smartphone application through a Bluetooth module.<br>Amplification, simulations, digital block, PCB layout strategy are presented and the main constraints, such as size, power consumption and integrability are discussed, as well as the consequent design choices. Package&#39;s characteristics are also described, in addition to the imple-<br>mented firmware.<br>During the test, S1 and S2 peaks are easily acquired with and without a synchronous ECG acquisition.<br>This device opens up new challenges to overcome in terms of wearability, hardware and software developments.
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