Sistema microcontrolado para monitoramento remoto do consumo de gás liquefeito de petróleo

Abstract

The pandemic of COVID-19 imposed the need for society as a whole to acquire new habits, or even resume some of them. With this, most families and people who went to bars and restaurants daily to eat, turned to produce their own meals at home. When preparing meals, many must have already faced the following problem, the time when the gas runs out. This is a very common problem, which leads to some unexpected inconvenience. From this, the idea of developing a microcontrolled system that monitors and remotely monitors the amount of LPG available for use, and complement it via an application for use on the smartphone, emerged. The project is intended to be another domestic tool that uses technology to solve problems, following home automation and IoT proposals, which is already known today, in addition to being easy to install and handle. Through the platform or smartphone application, the prototype informs the user when the contents of the cylinder are running out. The platform is compatible with the P13 cylinder model. Gas consumption is monitored through the cylinder weight detected via a microcontrolled weighing system. The weighing system is composed of a 50kg load cell, INA126 instrumentation amplifier, for voltage signal amplification, and ESP8266 microcontroller, for data acquisition and processing. The smartphone application was developed under the MIT App Inventor platform, communicating with the hardware via HTTP protocol. The project presented adequate results for the range of operating values, in addition to enabling implementation for commercial applications. [resumo fornecido pelo autor]