CORREIA, F. P.; http://lattes.cnpq.br/9826247432532928; CORREIA, Felipe Pinheiro.
Resumen:
The technologies of precision agriculture permit the management of natural resources for
a sustainable development of the environment, as well as the reduction of costs and an increase
in the production margin of profit. In this context the wireless sensor networks are presented as a
solution to gather soil and environment information, in large distributed areas. The Sao Francisco
Valley region in the Northeast of Brazil has as main economic activity the irrigated fruit production,
and is one of the major agricultural regions of the Country. Grape plantations receive large
investments and provide good financial return. However, the region still lacks electronic sensing
systems to extract adequate information from plantations. Considering these facts, this dissertation
presents a study of path loss in grape plantations for a 2.4 GHz operating frequency. In order
to determine the position of the sensor nodes, various environmental factors, that influence the
intensity of the received signal by a transceiver, must be considered. The analysis of the communication
channel presented in this dissertation provides subsidy for the network designer to
determine the optimal positions to place the sensors to achieve greater coverage area. The main
propagation phenomena were identified and interpreted for the studied environment. Also, the
parameter adjustment of the propagation models from the literature was performed. XBee-PRO
ZB S2B devices were used to measure the signal intensity.
