Research And Development Of Cooperative Vehicle Infrastructure Monitoring System Based On Intelligent Terminal

In recent years,traffic safety problems and traffic congestion problems are very serious.In order to monitor the health status of vehicles and road traffic congestion,this paper developed a cooperative vehicle infrastructure monitoring system based on intelligent terminals.The main research contents and results are shown as follows.First of all,the domestic and foreign research and development status of cooperative vehicle infrastructure technology and data collection terminal is summarized,the task requirements of cooperative vehicle infrastructure monitoring system are described,and the overall framework of cooperative vehicle infrastructure monitoring system is designed,which includes on-board terminal,infrastructure terminal and parking terminal.The key technologies used in the research and development of the cooperative vehicle infrastructure monitoring system are summarized,including CAN bus technology,OBD interface technology,4G communication technology,Bluetooth communication technology,DSRC(vehicular short range communication)communication technology,Euler angle detection technology,global GPS positioning technology,etc.Secondly,according to the requirements analysis of the on-board terminal 、infrastructure terminal and parking terminal of the cooperative vehicle infrastructure monitoring system,the on-board terminal with STM32F407 chip as the control core,the infrastructure terminal with Raspberry Pi as the control core,and the parking terminal with STM32F103 chip as the control core are designed.And with 4G module,DSRC module,millimeter-wave radar module,camera module and other external devices,the corresponding electronic platform construction is completed.Completed the design of the circuit schematic diagram of the parking terminal and the vehicle terminal,and produced the PCB circuit board.Thirdly,the driver layer program and application layer program of each terminal are designed.It realizes four functions: vehicle information acquisition,infrastructure information acquisition,cooperative vehicle infrastructure warning function and parking space management function.The Onenet cloud platform is used to build cloud applications to display and store cloud data.Finally,in order to verify the reliability of system,the vehicle information acquisition experiments,roadside information acquisition experiments,cooperative vehicle infrastructure warning experiments parking management experiments.The experimental results show that,in this paper,the design of cooperative vehicle infrastructure monitoring system has high practical value.It has higher significance for improving travel efficiency and ensuring driving safety.