基于ARM-Linux的无线视频监控系统设计

发布时间：2018-01-08 03:02

本文关键词：基于ARM-Linux的无线视频监控系统设计　出处：《武汉工程大学》2013年硕士论文　论文类型：学位论文

【摘要】：视频监控以准确、直观等特点，已在家庭安防、工业控制等领域有着广泛的应用。传统的视频监控系统大多依赖于有线网络，系统结构复杂，成本高且灵活性差。近年来，随着嵌入式技术、视频压缩技术和网络技术的发展，视频监控系统正朝着无线化、灵活高效的嵌入式方向发展。本文针对传统视频监控系统存在的不足，结合嵌入式技术、H.264编码标准和WiFi技术，设计并实现了一种嵌入式无线视频监控系统。该系统以ARM9微处理器为核心硬件，以高效、开源的嵌入式Linux操作系统作为软件平台，以USB无线WiFi网卡作为视频传输模块。论文首先介绍了视频监控系统的现状和今后的发展趋势，，阐述了研究嵌入式视频监控系统的价值和意义，然后给出了系统的总体设计方案，接着完成了系统主要硬件设备的选型，建立了交叉开发环境和进行了嵌入式Linux操作系统的移植。接着重点介绍了嵌入式Linux下设备驱动的开发、利用V4L2提供的接口进行的视频采集、采用H.264编码标准对视频的处理和基于RTP/RTCP协议的视频传输。最后在远程客户端利用DirectShow技术实现了视频的解码及显示。系统测试结果表明：系统能稳定运行，在视频帧的压缩率及传输上均表现良好，远程监控端获得的视频清晰流畅、延迟低，满足系统的设计要求及目标。
[Abstract]:Video surveillance with accurate, intuitive features, has been in the family security, industrial control and other fields are widely used. The traditional video monitoring systems mostly depend on the cable network system has complex structure, high cost and poor flexibility. In recent years, with the development of embedded technology, video compression technology and network technology, video surveillance the system is moving in the direction of embedded wireless, flexible and efficient development.
Aiming at the shortcomings of traditional video surveillance system, combined with embedded technology, H.264 encoding standard and WiFi technology, design and implementation of an embedded wireless video monitoring system. This system uses ARM9 microprocessor as the core hardware in an efficient, open source embedded Linux operating system as the software platform, using USB as the wireless WiFi video transmission module. This paper first introduces the status of video surveillance system and the future development trend, expounds the value and significance of the research of embedded video monitoring system, and then gives the overall design of system design, and then completed the selection of the main hardware equipment, the establishment of a cross development environment and the transplantation of embedded Linux operating system. Then introduces the development of embedded Linux device driver, video capture using V4L2 interface, using H.264 encoding standard The video processing and video transmission based on RTP/RTCP protocol. Finally in the remote client using DirectShow technology to realize the video decoding and display.
The system test results show that the stable operation of the system, in the video compression and transmission rate are good, the remote monitoring terminal to access the video is clear and smooth, low delay, meet the system design requirements and objectives.

【学位授予单位】：武汉工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TN948.6;TP368.1

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