Desenvolvimento de um sistema de monitoramento em tempo real do consumo de energia elétrica para aplicações de média e baixa potência

Abstract

The present work exposes the development of a system for real-time monitoring of electrical energy consumption applied to medium and low power devices. This system is proposed in order to obtain individual’s reports energy consumption of each monitored device, in addition to an overview with the calculation of the amount to be paid per devices operation’s period. It is believed that making the consumption pattern information available to the user can contribute to saving electricity, in view of the need to preserve natural resources and also because of the electricity price’s increase. The project consists of a circuit responsible for measuring voltage and current through sensors LV25-P and LA55-P. After obtaining the values, these signals are conditioned by a non-inverting adder circuit with an operational amplifier to provide signals compatible with the analog inputs of the ADS1115 digital analog converter and subsequently the ESP8266 module, the device is responsible for the software processing that consists of performing samples calculation in the defined period, and by GET request send the results to the web application. The system was developed in such a way that when receiving the data, the web application inserts them into the database, any changes occur synchronously in the database tables and in the HTML pages, graphical user interface.