Desenvolvimento de um sistema Android de informação e entretenimento para veículos: visualização de defeitos veiculares

Abstract

Given the technological advances, vehicles are becoming increasingly modern and intelligent, integrating systems that enhance the safety of drivers and passengers. However, the communication of defects through codes and lights remains outdated and confusing, which can lead to serious consequences in critical situations. This work presents a study of a new approach to vehicle defect communication using Android Automotive OS (AAOS) and the Controller Area Network (CAN) bus, as opposed to solutions based on Android Mobile and On-Board Diagnostics II (OBD-II). This approach involves building a vehicular network with the CAN bus for data transmission, while the AAOS, running on a Raspberry Pi 4B, simulates a vehicle connected to the bus, processing information and displaying defects clearly and effectively. A service in the AAOS captures the CAN network traffic and populates the Vehicle Hardware Abstraction Layer (VHAL), allowing the infotainment application to display defects to the user in a clear and effective way. Experiments demonstrated communication between two nodes on the CAN network, with real-time display of information and defects on the application. A usability test conducted with potential users indicated that the new approach is more effective and less confusing in communicating vehicle defects than traditional methods.