Internet of Things System for Detecting Forest Fires
Abstract
This article presents the results of experimental tests of commercial sensors and communication modules for the development of a low-cost Internet of Things (IoT) system prototype for early forest fires detection based on Wi- Fi and LoRa standards. The system is composed of three parts: (1) sensor nodes, which measure temperature, humidity and concentration of flammable gases in the environment; (2) a gateway, which receives data read by nodes and sends it to the Internet; and (3) a Web system to display the measurements of the sensors. The sensor tests indicated that they only capture information from the close environment, making it difficult to monitor large areas. Tests of the communication modules in a cerrado vegetation environment showed data transmissions at distances of approximately 200 meters for the Wi-Fi standard and 500 meters for the LoRa, confirming that it has a greater range than the Wi-Fi, but much less than the expected kilometers range acording to standard’s specifications.
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