VALADARES; http://lattes.cnpq.br/2071137340853439; VALADARES, Dalton Cézane Gomes.
Résumé:
In industry, it is known that wireless networks are the most suitable, since they have
low implementation cost, greater flexibility and are less invasive to the environment.
In the literature, among the wireless network technologies applied in industrial
environments, little attention is given to traditional 802.11a/b/g, known by the
domestic use and by the acronym WiFi (Wireless Fidelity). This work aims to evaluate
the performance of an 802.11g network in an industrial environment of a thermal
power plant. The scenario consists of four communication links, with the main one
having a distance of approximately 150m. For the evaluation of network performance,
we considered three metrics: packet loss rate, bandwidth and response time. Tests
were carried out through the establishment of communication between points within
the engine square (first link) and the server located in the boardroom (last link). The obtained results for the signal strength at each point were compared with the
estimated values by the Log Distance Path Loss Model. It was verified that the
performance of the communication performed by the network did not suffer significant
degradation, even being in an environment subject to considerable electromagnetic
interference. After the concluded analysis, it was found feasibility of using 802.11g
technology for data communication in environments with characteristics similar to
those of a thermal power plant.