REDES DE SENSORES SEM FIO EM MONITORAMENTO E ...

Abstract of Dissertation presented to COPPE/UFRJ as a partial fulfillment of the
requirements for the degree of Master of Science (M.Sc.)
WIRELESS SENSOR NETWORKS IN MONITORING AND CONTROL
Sergio Torres dos Santos
June/2007
Advisors:
Department:
Aloysio de Castro Pinto Pedroza
Luís Henrique Maciel Kosmalski Costa
Electrical Engineering
The advances in wireless technologies and microelectronic have enabled interesting
new applications for wireless devices. With this development it appeared an increasing
demand for remote monitoring and control in industrial and residential environments.
Some technologies are already met in the market, destined to this type of application and
amongst them the ZigBee standard is distinguished. These applications suffer restrictions
in its performance due to internal interference between nodes. This work shows this influence,
through the throughput in different rates and amounts of nodes, showing conditions
that must be respected and be prevented in a scenery of automation and control, where
if demand more reliability than a data high rate. This study it can not only serve of base
for other works with ZigBee sensors networks, but mainly for designers in the creation
of ZigBee networks, considering aspects as: scenery, number of nodes, throughput and
packet delivery ratio.
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