logo SBA

ETD

Archivio digitale delle tesi discusse presso l’Università di Pisa

Tesi etd-05162010-124607


Tipo di tesi
Tesi di laurea specialistica
Autore
VALLERI, PAOLO
URN
etd-05162010-124607
Titolo
Modeling Detection and Tracking of Complex Events in Wireless Sensor Networks
Dipartimento
SCIENZE MATEMATICHE, FISICHE E NATURALI
Corso di studi
TECNOLOGIE INFORMATICHE
Relatori
relatore Prof. Chessa, Stefano
relatore Dott. Amato, Giuseppe
Parole chiave
  • detection
  • event in WSN
  • mobile query
  • tracking
Data inizio appello
04/06/2010
Consultabilità
Non consultabile
Data di rilascio
04/06/2050
Riassunto
Wireless Sensor Networks (WSN) are widely used to monitor physical environments and recent developments have proposed to express the data gathering tasks of a WSN by means of a query language.
In this thesis we formalize the notion of network-event in a WSN and we propose a query language to manage and interact in its detection, tracking and classification. A general event is a natural phenomenon characterized by similar environmental conditions and it is subjected
to both temporal and spatial conditions. The network-event identifies the same phenomenon but seen through the sensing ability (temperature, noise, humidity) of a WSN. To manage the network-event and gather its data we propose a new query language (QL) that allows us to keep an high level of abstraction in moving the query subject from the physical sensors, to the
natural phenomenon that occurs in the WSN.
With a query bounded to an event we can then realize a mobile-query system able to follow the movements of an event in the network. Traditional
approaches assume that a query, or more precisely its network task, lives and is executed on a specific sensor: we have instead in mind to let it to move (or clone) around the sensors involved in the same event.
The aim of this thesis is the formalization of a network-event and the definition of a query language to deal with network-event based system. Furthermore we propose the guidelines, by means of running example, to implement such kind of system and we show its advantage comparing to the
previous ones.
File