Proposta de um sistema de medição e controle do consumo de energia eléctrica

Abstract

This monograph aims to develop a system for measuring and controlling the electrical energy consumption of two single-phase loads, corresponding to the lighting and air con ditioning systems installed in separate rooms of an environment. The system is composed of two main subsystems: measurement and control. The methods for measuring and con trolling energy consumption were analyzed, and the following components were identified for the implementation of the measurement subsystem: current and voltage sensors, Ar duino Uno and ESP32 microcontrollers, and an LCD display for local data visualization. These sensors read the electrical values, enabling the calculation of instantaneous power and accumulated energy consumption. The obtained information is made available both locally and remotely through a web interface, which also allows for sending notifications to the user about energy consumption. For the control subsystem, relays and specific sen sors were used. In the room with the lighting system, a presence sensor was integrated, allowing the lights to be automatically switched on when motion is detected and turned off in the absence of people. In the room with the air conditioning system, a temperature sensor was used to automatically control the air conditioner based on the thermal condi tions of the environment. The system’s logic was developed using the C++ programming language, while the web interface was built using HTML, providing a simple and effective user interaction.