Design And Realization Of Mobile Video Surveillance System

In recent years,embedded video surveillance system has been widely used in military,traffic,robot vision and public safety because of its advantages of reliability,portability and so on.At the same time,mobile video surveillance system has been widely studied because of its mobile characteristics,which has become a popular trend.In addition,with the development of WIFI,Bluetooth and other wireless technologies,video transmission has become very diverse and video surveillance system is gradually moving towards a more flexible,small,mobile direction.This paper is devoted to the design of a small mobile video monitoring system.Combined with the practical application and a lot of research have been done,the system architecture is determined and the overall scheme is designed.For chip selection,through the comparative study of various core processing chips,Hisilicon video monitoring chip Hi3518EV100 is designated as the system core processing chip and other parts of the device model are also identified.On the basis of the actual needs of the system,schematic and PCB are designed and each module is tested.The problem of system miniaturization has been solved.Small size multi-function multi-layer PCB board is designed and implemented.The laminated structure,layout and wiring,power supply and signal integrity of multilayer and high density PCB are described.The system is strictly customized.The modifications and transplantation of linux kernel and peripheral driver are done.The system functions of high definition video capture,H.264 coding and video storage are designed and implemented.Combined with specific application requirements,video stream is transmitted by RTSP in the way of WIFI and the system implements the migration and modification of the RTSP server.Bluetooth is used as a system control tool.The video can eventually be displayed at the far end.Finally,the test of the whole system shows that the system is running well,and it can meet the requirements of the project,such as stability,reliability,clarity,real-time and so on.