Sistema de alerta IoT para ambientes acadêmicos

Abstract

The growing relevance of the Internet of Things (IoT) in creating smart environments and optimizing resources drives the development of innovative monitoring solutions. This work presents the design and implementation of a low-cost system for generating alerts in academic environments. The main objective is to notify, through a web platform, about resource waste conditions, such as active lighting or air conditioning systems in unoccupied rooms. The methodology involved the construction of a hardware prototype based on the ESP32 microcontroller, integrated with presence (PIR), luminosity (LDR), and temperature/humidity (DHT11) sensors. The firmware developed for the device is responsible for collecting and processing data locally, applying timing and threshold logic, and then transmitting the alerts to a web server. The results obtained demonstrated that the prototype is functional and capable of successfully identifying and communicating the predefined conditions, thus validating the proposed architecture. It is concluded that the project not only achieves its practical objectives but also serves as a solid and accessible foundation for future implementations of building automation and resource management in educational institutions.