Design And Implementation Of Vehicle Terminal For Internet Of Vehicles Based On Dual System

In recent years,with the acceleration of China's urbanization process,urban traffic congestion,frequent occurrence traffic accidents,and difficult parking problems have become increasingly prominent,seriously influences people's travel and economic development.With the rapid development of IoT,the internet of vehicles Technology has become Ways to solve urban traffic problems in the future.The vehicle terminal for internet of vehicles is the basis for the establishment of the internet of vehicles system,and is a bridge for V2V and V2I.The vehicle terminal needs to have various information interaction,fast data processing and function expansion.This project studies the literature of existing vehicle terminal for internet of vehicles at home and abroad.Proposes vehicle terminal for internet of vehicles based on dual system supported by Liaoning Province Natural Science Foundation in 2018,which is the research on key technologies of vehicle communication terminals for intelligent internet of vehicles.Dual system is embedded Linux system and Android system.The embedded Linux system provides users with security applications and scheduling applications;The android system provides users with entertainment applications.The physical environment of the dual system is two experimental boards of the same type and respectively equipped with a touch screen.The Telematics vehicle terminal based on dual system mainly realizes pedal data validity judgement,positioning data hot standby,driving data uploading to the cloud,downloading cloud traffic coordination information,navigation,video and audio playback,etc.Including dual system processor experiment board,4G Module,dual-mode positioning module,Bluetooth/WiFi module,GPS positioning module and other components.In the design of the vehicle terminal,the vehicle terminal is first analyzed according to the safety management life cycle in the IS026262 standard,and the hardware architecture and risk processing strategy of the vehicle terminal are determined.Then,the relevant interface of each functional module of the vehicle terminal is designed.After that,the vehicle terminal is customized according to the actual situation,and the Kernel driver file of the embedded Linux system is added/removed,so that the embedded Linux system can support related functional modules;the Android system modifies the File System source code under the premise of kernel customization,so that Android system is more in line with the vehicle environment.Finally,the application program in the dual system of the vehicle terminal is designed,in the embedded Linux system,the risk processing program and the data interaction program between the vehicle terminal and the cloud are simultaneously run by establishing a process mode,and the key information is displayed in the QT/E interface.Designing a listener program in the Android system,through the Android UI interface button,CAN communication,serial port monitoring to achieve voice control,positioning data hot standby and third-party application jump,navigation and entertainment services provided by third-party applications.Finally,the physical test of the experimental boards of different systems is carried out separately.Communicate data by simulating internet of vehicles,verify the communication capabilities and expected functions of the vehicle terminal.The experimental results show that the scheme is feasible,the circuit design is reasonable,and the expected goal is achieved.This achievement has practical significance for promoting the development for internet of vehicles.