Sistema de monitoramento do solo integrado utilizando LoRa

Abstract

The objective of the project is the development and assembly of a monitoring device ment to collect and monitor soil properties, including temperature, humidity, pH and the concentration of phosphorus, nitrogen and potassium. The project will be carried out from a microcontrolled circuit, with an input for reading the sensors and a connection module using LoRa, for communication with the gateway connected to the internet. The data will be displayed in a graphical interface on a cloud server. This proposal is aimed at small and large producers, aiming to improve plantation management, taking into account that by reducing the time required to carry out the soil analysis, it is possible to make a more effective decision. Temperature, humidity, pH, and NPK concentration tests demonstrated adequate sensor accuracy. The range test was conducted to evaluate the efficiency of the soil properties monitoring system using LoRa technology, with reference to an urban environment, in which it demonstrated positive results, with the system being able to transmit data over considerable distances in this environment. The final test involved the complete system, with arugula as the model plant, observing differences in the data collected between planting without fertilization and planting with mineral fertilizer 04-14-08. The positive results obtained demonstrate the viability of the monitoring system, with potential for application in different crops, considering their particularities. The developed project proved to be promising by enabling the accurate collection and sending of the collected data, as well as its representation in an easy-to-understand interface. The printed circuit board containing the components was affordable, as well as the sensor and gateway used. This low-cost approach offers a viable solution compared to other available options. The application of this technology has the potential to improve agricultural management, providing a flexible and scalable architecture, allowing an effective management of resources and contributing to the sustainability and productivity of the agricultural sector.