摘要
随着无线局域网的广泛应用,如何在嵌入式系统中整合WLAN宽带通信技术进行视频传输成为一个热点。本文是基于ARM11硬件平台和嵌入式Linux操作系统的无线视频终端系统的设计。给出了系统的总体设计与主要功能模块的实现,其中主要包括最小系统、CCD模拟视频采集模块、无线局域网传输模块的硬件设计,嵌入式Linux与驱动程序的移植以及应用程序实现等。该系统可应用于视频监控领域。
在嵌入式系统上实现无线通信网络协议的移植、分析、改进,针对当前嵌入式系统和无线网络的最新发展方向,设计一种适合中高端应用的WLAN终端平台,同时还可支持其他外设接口。论文构建了该平台的硬件系统和软件系统,硬件系统采用的处理器是三星公司的ARM11。讲述了基于ARM11的硬件设计方法、系统的移植和驱动的开发,包括主要硬件电路模块设计和软件系统两部分。
论文的软件部分包括在硬件平台上运行Linux操作系统,并通过交叉编译和移植,调试CCD模拟视频输入和基于SDIO接口的802.11b/g无线网卡驱动。通过基于嵌入式无线视频终端的连接,建立嵌入式无线通信网络。
Along with the widespread application of the Wireless Local Area Network(WLAN), In order to integrate wireless LAN embedded systems for video transmission of broadband communication technology. This article is based on the ARM 11 hardware platform and embedded Linux operating system, the design of wireless video terminal system.Describes the system's overall design and main modules of the design and implementation, Which mainly include Minimum System,CCD analog video capture module, WLAN module hardware design, Embedded Linux driver transplantation and application implementation, etc. The system can be applied to video surveillance.
In the embedded system wireless communication networks transplantation, analysis, improvement, The current embedded systems and wireless networks the latest development, Design a high-end applications for WLAN terminal platform, But can also support other peripheral interface. Paper constructs the platform hardware and software systems, Hardware system is used in Samsung's ARM11 processor. Describes the ARM 11 based hardware design, systems transplant and driver develop, The main circuit module includes hardware and software systems in two parts.
Software components included the hardware platform running Linux operating system, And through cross-compiling and porting, debugging CCD analog video input and interface-based 802.11b/g wireless LAN SDIO Driver. Embedded wireless video terminal-based connection, the establishment of embedded wireless communication networks.
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