Design Of Vehicle Monitoring System Based On Beidou Positioning And LoRa Communication

With the development of science and technology and the acceleration of urbanization,automobiles have become a necessity for people's daily life,and their ownership has risen sharply.Especially under the promotion of sharing bicycles and sharing cars,the number of vehicles in cities has exploded.Under such a background,urban road traffic congestion is getting worse and worse,vehicle theft happens frequently.The effective supervision of vehicles has become a hot spot of public concern,and the development of vehicle monitoring systems has been carried out based on this.The vehicle monitoring system integrates satellite navigation technology,wireless communication technology and geographic information technology to effectively improve road traffic capacity and ensure vehicle safety.Due to the pioneering development of satellite navigation technology in the United States and the maturity of cellular network communication,most of China's vehicle monitoring systems currently use GPS satellite positioning combined with GPRS data transmission.With the growing maturity of China's Beidou satellite navigation system and the development of low-power wide-area networks,In order to promote the development of China's Beidou navigation industry,this paper proposes a vehicle monitoring system based on Beidou satellite positioning,and uses LoRa wireless communication to have long distance and low power consumption,and improves the communication mode of the existing system.Based on the basic principles of Beidou satellite positioning technology,LoRa communication technology,embedded technology and electronic map technology,this paper proposes the design ideas and specific implementation schemes of vehicle monitoring system.The main contents are as follows:(1)Vehicle terminal design.Use STM32 microprocessing as the master chip.Through the ATGM332 Beidou positioning module,LoRa communication module and other peripheral circuits,Completed the hardware design and program implementation of the vehicle terminal.The vehicle terminal realizes data acquisition,data analysis and data transmission functions of the vehicle position.(2)Monitor the host computer design.The monitoring terminal host computer is a Windows application written in C++ using the Qt development framework.It mainly performs UI interface design and electronic map function design to design data interaction between internal modules.The monitoring center upper computer realizes the map display function to the target vehicle.After the design is completed,the physical production is performed,and then the functions of each part of the test system are performed.T The test results show that the positioning accuracy,communication quality and upper computer function of the monitoring system can meet the actual needs.It has the advantages of high positioning accuracy,long communication distance and low power consumption,and the display function of the host computer is good and the software runs reliably.The system as a whole can meet the needs of remote vehicle monitoring and achieve the expected goals,and propose an effective solution for urban vehicle supervision.