Research And Implementation Of The Embedded Wireless Video Surveillance System Based On ARM11

With the development of embedded technology, video compression and wirelesstransmission technology, wireless video surveillance system has become the tendency ofdevelopment in the field of video surveillance. This paper researches and designs a solution ofembedded wireless video surveillance system based on ARM11. The system uses embeddedplatform which based on S3C6410processor as the server to process video including capture,compression and transmission, and PC or other embedded device as a client to receive, decodeand display the surveillance video.This paper firstly introduces the techniques that the system adopts, and then describes thewhole design based on C/S structure of the system. On this basis, to complete the selection andbuilding of the hardware platform, and to introduce the building of embedded softwaredevelopment environment in detail, after that the application layer software design of thesystem’s server and the client is analyzed.The application layer software of the system is based on the Qt application developmentframework to write, has good performance in cross-platform, adopts multi-threading technologyto improve the concurrency of the system, completes the exchange of data between threadsthrough the ring buffer. The server-side uses V4L2of Linux to capture video, and realizes thelocal echo function. S3C6410MFC is used for compressing video data based on H.264standard.To implement the video transmission adopts JRTPLIB library based on RTP/RTCP protocol. Onthe client-side, after receiving the video data by JRTPLIB library, the FFMPEG is used to decode,and then display the video. The server-side and the client-side communicate through the wirelessnetwork. After testing, the system has basically reached the desired design goals. The paperfinally points out the shortcomings of the system and gives some suggestions for improvement.