Uso do microcontrolador ESP32 para monitoramento e operação de um inversor de frequência via rede Wi-­Fi

Abstract

With the advancement of technology and the need for increasingly faster communication between machines, the concept of "Internet of Things"(IoT) was developed, being one of the purposes, it refers to the human being being able to follow the process without having the need from being close to the place to know what’s going on. Therefore, the idea of intelligent systems for the exchange of information between devices that are connected in a network was created. In the industry, there are several pieces of equipment in which the exchange of information from the devices takes place through the RS­485 network, with supervision and operation of the process limited to direct human presence on site, so that the information is passed on to the front. In order to present more flexibility and agility to the supervision and operation process, the following work will develop a prototype for the acquisition of data and operation of devices commonly used in the industry, being the device in question, a frequency inverter, through the use of the ESP32 microcontroller and the development of web pages through programming languages such as HTML, C and JavaScript for the acquisition of data and operation of the device through a Human Machine Interface (HMI) that is connected to the Wi­Fi network. With the use of the Modbus communication protocol in the exchange of information between master and slave devices, in addition to the presentation of the results obtained in practice during its operation.