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Tesi etd-09222019-230248


Tipo di tesi
Tesi di laurea magistrale
Autore
LO PRETI, MATTEO
URN
etd-09222019-230248
Titolo
Distributed mechanical sensing in a soft optical skin
Dipartimento
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
BIONICS ENGINEERING
Relatori
relatore Prof.ssa Laschi, Cecilia
relatore Dott.ssa Beccai, Lucia
controrelatore Prof. Tognetti, Alessandro
tutor Dott. Falotico, Egidio
tutor Dott. Totaro, Massimo
Parole chiave
  • Electronic skin
  • pressure sensor
  • shape-independent
  • soft
  • transparent
Data inizio appello
11/10/2019
Consultabilità
Non consultabile
Data di rilascio
11/10/2089
Riassunto
The present Master’s Thesis investigates a continuum polymer waveguide sensor for a 2D artificial skin. At first, mechanical simulations have been conducted to test different compositions of PDMS to relate their stiffnesses to the ranges of performance that can be achieved by using them as substrate. Infrared photodiodes and photoreceptors have been chosen and assembled in a PCB to detect the changes on the surface of the sensor. The response to different stimuli on different substrates has been tested in a opto-mechanical simulation to find the best composition of the skin, which has been produced in a controlled process.
Secondarily, some insights for approaches to map the output of the photodetectors into a pressure map have been explained, with the aim of obtaining a measurement which has to be independent on the spatial configuration of the detectors and, thus, on the shape of the skin.
The advantages of this technology are the absence of electronics in the sensing area and the insensitivity to the environment. Possible applications concern coatings for MIS tools and stretchable robots (e.g. inchworm-like, manipulators) working in an electrically or magnetically corrupted environment or having the need to come in contact with water or dust.
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