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基于 ARM 的数字视频监控的设计
摘 要:视频监控系统是安全防范系统的组成部分,它是一种防范能力较强的综
合系统。现今监控系统已经步入了数字化、网络化时代,即视频从前端图像采集
设备输出时即为数字信号,并以网络为传输媒介,基于 TCP/IP 协议,采用流媒
体技术实现视频在网上的多路复用传输。使用嵌入式系统实现远程视频监控技术,
符合网络化数字化的特点,对公安、安防等行业有着重要的现实意义。
视频监控系统一般采用基于 PC 平台+视频采集卡的形式,该方案系统体积
大、成本高,在远距离、多点系统中实现困难。本设计采用 Samsung 公司基于 ARM
公司的 ARM920T 处理器核(CPU 芯片含有视频采集接口),软件平台是
Linux-2.4.20 操作系统内核,由于 Linux 操作系统的开放特性、优良的网络支
持性能、模块化的结构,较好满足系统的需要。
关键词:视频监控;高级精简处理器;嵌入式;Linux 操作系统
Based on ARM digital video monitoring design
Abstract:Video surveillance security system is an integral part of the system,it is a
comprehensive prevention system capability. The current monitoring system has
entered the digital and network era,that is,video from front-end image acquisition
device when the output is digital signal, and to network transmission medium, based
on the TCP/IP protocol,using streaming media technology to achieve multi-line video
multiplexing transmission path.Embedded systems using remote video surveillance
technology,in line with the digital network characteristics of public security, security
and other industries have an important practical significance. Video surveillance
systems are generally based on the PC platform video capture card, the program
system of large, expensive, in the long-range, multi-point system to achieve difficult.
The design uses Samsung's ARM-based ARM920T processor core (CPU chip
contains a video capture interface), software platform is a Linux-2.4.20 operating
system kernel, as a result of the open Linux operating system features, excellent
performance of the network support, the module of the structure, better meet the
needs of the system.
Keywords:video monitor and control;ARM;embedded;LinuxOS