基于达芬奇技术的视频监控系统研究

Embedded Video Surveillance System Based on DaVinci Technologies

传统视频处理平台,采用DSP(Digital Signal Processor)结合ARM(Advanced RISC Machines)处理器的体系结构,印刷电路板的空间较大,双核总线的数据吞吐量低,双核处理器间数据交互方案复杂。为此,给出了基于达芬奇技术的解决方案。该方案以双内核处理器芯片DM6446为核心,在达芬奇平台上实现了嵌入式Web服务器、视频采集编码和视频传输功能模块,从而搭建起B/S架构的视频监控系统。研究结果表明,该系统具有高效的处理能力、平衡的内部互连以及专用外设组合的优点,分别适配到ARM和DSP内核中,可使ARM与DPS发挥各自功能的同时又相互配合,从而实现了单芯片的系统级性能优化。

In the traditional video-processing platform with detached DSP（Digital Signal Processor） and ARM（Advanced RISC Machines） processors,there is some disadvantages such as large print circuit board,the small amount data access capacity and the difficulties for exchanging data.A new method is provided with DaVinci platform for an embedded video surveillance system,which is achieved with a dual-core processor chip DM6446.The realization is introduced in three function blocks,one is embedded Web server,another is encoding for video capture and video transmission,the last one is about protocol stack for network communication.The video surveillance system is built up in B/S（Browse/Server） architecture.The functions are fitted into ARM and DSP core processor correspondingly,which leads the best performance optimization on one chip.