Desenvolvimento de um dispositivo de aquisição de dados rede CAN para a linha automotiva

Abstract

The motor vehicle is the standard way of transporting people and cargo by road, which is present on a global scale. With the advancement of technology, data monitoring has become an essential tool in the automotive world. To understand the behavior of a vehicle in different real-world situations, a series of data are analyzed during the development process through the OBD II connector, which is present in all vehicles with electronic engine management. With this in mind, an automotive data acquisition device was developed, where data could be collected and stored on a cloud server. The main objective is to take readings from the vehicle's rotation, speed, and throttle position sensors. Based on the research, a data acquisition device capable of reading vehicle sensors from the vehicle was developed. The CAN network is a communication protocol that sends packets containing the PID (Parameter Identification) codes of interest, so the ECU can return the values to the data acquisition device. Through a Wi-Fi connection, data is sent to the online server where it is stored and is available for reading on a computer. The data acquisition device was developed with the ESP32-S2-Wroom microcontroller, which is responsible for connecting to the Wi-Fi network and processing the vehicles collected data. Device's validation tests were conducted in two small passenger vehicles, where data were collected on a 650-meter urban route. The device's connection to the vehicle was stable, returning values for the requested parameters. The stipulated objectives were successfully achieved. [resumo fornecido pelo autor]