Creación de un prototipo de monitoreo de temperatura del aire utilizando equipos de desarrollo de bajo costo y comunicación LoRaWAN : Implementación física de un prototipo de monitoreo de temperatura del aire utilizando equipos de desarrollo de bajo costo y comunicación LoRaWAN.

Abstract

LoRaWAN has gained significance in the field of IoT communications globally due to its cost-effectiveness, long-range capabilities, and low energy consumption, enabling a wide range of applications. However, its adoption in Ecuador is not widespread. The purpose of this study is the design and creation of an affordable prototype for ambient temperature measurement using LoRaWAN within the environment of Escuela Politécnica Nacional. The PPDIOO methodology proposed by Cisco was employed, dividing the process into 6 stages: Preparation, Planning, Design, Implementation, Operation, and Optimization. To implement the prototype, the end-device was assembled, followed by connecting it to the LoRaWAN Gateway. Subsequently, data processing occurred within the Gateway using Node-RED. A MQTT server was established to grant data access to an MQTT client. After deploying the network, optimization was conducted along with tests for coverage, energy consumption, and signal quality. The results include a coverage of 2.66 km encompassing the perimeter of the Escuela Politécnica Nacional. Moreover, the operational time, sending data every 3 minutes with a 1000mAh battery, extends to 20 hours. Signal quality revealed an average RSSI of -28dBm and a SNR of 9dB. All of this is achieved at a cost not exceeding $70 per device, representing a significant advancement in the realm of economical wireless environmental monitoring within the setting of Escuela Politécnica Nacional's environment while also broadening prospects for future applications using LoRaWAN technology.