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Live Wire: design and validation of a capacitive coupling Intra-Body Communication system for visually impaired people

Matteo Morrone

Live Wire: design and validation of a capacitive coupling Intra-Body Communication system for visually impaired people.

Rel. Danilo Demarchi, Alessandro Sanginario, Marco Crepaldi, Paolo Motto Ros. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Biomedica, 2021

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Abstract:

Intra-Body Communication (IBC) is a non-RF, short range communication technique which uses the human body as a transmission medium ensuring a safe data exchange system. In this thesis, a new device, \textit{Live Wire}, is treated. It is based on the use of a transmitter (TX), directly connected to ground through a low impedance path and a wearable receiver device (RX), powered by batteries and capacitively coupled to the ground, thus providing a high impedance path to ground. It supports visually impaired people as a navigation indoor and object detection system providing an alternative to other biomedical Wireless Body Area Network (WBAN) techniques. Indeed its lower power consumptions and intrinsic safety in sensitive data transmission make it more suitable for such applications. First, a state of the art overview, introducing most diffused and well-known exploited techniques in literature, is provided, followed by the phenomenon theoretical background investigation. \textit{Live Wire}, conceived by Crepaldi et al. \cite{Crepaldi} is presented, describing the key-properties of the exploited system to introduce the device at the current state, starting from its hardware design, electrical characteristics, applicability and performed functions. Then, its validation setup measurement results, confirming the effectiveness and reliability of the designed device. Touch detection algorithm in different conditions is tested, demonstrating its accuracy. Last, the possibility to recognize RX user touch from fortuitous one, as well as all the possible future outcomes and applications, are discussed.

Relatori: Danilo Demarchi, Alessandro Sanginario, Marco Crepaldi, Paolo Motto Ros
Anno accademico: 2020/21
Tipo di pubblicazione: Elettronica
Numero di pagine: 97
Soggetti:
Corso di laurea: Corso di laurea magistrale in Ingegneria Biomedica
Classe di laurea: Nuovo ordinamento > Laurea magistrale > LM-21 - INGEGNERIA BIOMEDICA
Aziende collaboratrici: Politecnico di Torino
URI: http://webthesis.biblio.polito.it/id/eprint/17602
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