Aplicação de protocolo IOT para monitoramento veicular

Abstract

The objective of this work is to explore Internet of Things (IoT) concepts, applicability and its main protocols, in the process of extraction and publication of data originated from modern vehicle on-board diagnose systems. A bibliographic review about the subject is presented, ex ploring themes related to the modern car, combustion engine and its characteristics, control units, communication and protocols. Other themes related to IoT, its characterization and definition, main communication protocols and usage are also explored. There is a limitation in relation to the user location in order to have access to a vehicle diagnostic information. With this problem in mind, the work is proposing a system that acts as a gateway to connect vehicles to a central system capable of giving the user a monitoring experience. The gateway system is responsible for translating the messages in the OBDII (On-Board Diagnostic II) format to a MQTT (Message Queuing Telemetry Transport) protocol format and publish it in the Internet. Tests with real vehicles were made with the intent of ensuring compatibility, viability and performance of the proposed system while collecting measurements of message processing time. This tests, after the data was analysed, confirmed that the proposed system has a correct operation, processing 99.06% of the messages in 800 milliseconds.