Diseño e implementación de un sistema con tecnología Lorawan para localización de niños entre 0 y 11 años en ambientes abiertos de alta concurrencia.

Abstract

In Ecuador, there is currently no device capable of real-time child tracking and alerting in case of possible loss or abduction. Therefore, this technical project aimed to design and implement a system with LoRaWAN technology for tracking children aged 0 to 11 in high-traffic open environments. The prototype consists of three nodes: the sensor node, responsible for collecting GPS data through the Neo-6M GPS module, and temperature data through the Mlx 90614 module and transmitting this data to the Gateway node. The Gateway node receives the transmitted data and uploads it to TTN. The processing node is responsible for processing the data from TTN via node-red, controlling the geofence, and monitoring the child's temperature. The storage node is responsible for storing GPS data, date, and temperature in the Firebase database, which is crucial in case of a loss. The visualization node displays GPS data in real-time on a map. The system covered distances ranging from 389.46 to 1039.64 meters, with a battery life of around 8 hours. The GPS accuracy of the system varies between 5.1429 to 22.129 meters, and the latency averages between 400 to 500 ms, parameters that are favorable for a tracking system. In this context, it is concluded that the prototype functions effectively and assists in real-time and remote monitoring of children's locations, allowing real-time alerts in case of possible loss or abduction.