为设计基于Internet技术的视频监控系统,采用了PHILIPS-ARM芯片的最新内核Cotex-M3,以LPC1768处理器为核心,DP83848为以太网物理层收发器,实现了两个不同内网间穿越Symmetric型NAT网关通信；实验表明,该硬件设计为上层协议栈等软件提供了良好的支持,具有良好的稳定性和可靠性,实验效果好,满足设计要求；文中在给出了硬件设计方案的同时,着重介绍嵌入式设备接入网络的底层设计方法,并描述了软件设计过程.%In order to design a digital Video surveillance system based on the Internet, PHILIPS -ARM latest Cortex-M3 was used, the LPC1768 processor was core, DP83848 was for the Ethernet physical layer transceiver, NAT net communication in two clients in the different symmetric was successfully achieved. It was proved in experiment that the hardware design could provide good support for upper layer protocol stack, system was stable and reliable, experimental results was effect , it could meet the design challenge, hardware design was presented in the paper, the design method of underlying access network in embedded device and the software design process were focused on at the same time.
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