摘要
视频信息传输对救灾、应急通信和特殊区域监控有着重要意义,网络的适应性和带宽问题是限制视频监控系统发展的重要因素。无线Mesh网络具有带宽高、易组网等优点,能够提供实时的视频传输服务。首先完成对基于Mesh网络的视频监控系统整体架构设计,通过实验仿真的方法对比几种常用的Mesh网络路由协议性能,根据仿真结果和应用需求,选择AODV作为路由协议方案。然后在DM365硬件平台和嵌入式Linux操作系统平台之上完成视频传感器节点设计。最后对无线Mesh网络多跳带宽性能进行测试,测试结果表明系统可以满足应用需求。
Video information transmission plays an important role in disaster relief, emergency communications and special regional monitoring. However, adaptability and network bandwidth is an important factor to restrict the development of video monitoring system. Wireless Mesh network with high bandwidth, easy networking and other advantages, can provide real-time video transmission services. This article complete the framework design of video monitoring system based on WMN and compare the performance of several kinds of WMN routing methods through simulation. It selects AODV as the routing protocol based on the simulation results and application requirements. Then, it realized the DVC theory-based encoding scheme on the video sensor node based on DM365 and embedded Linux operating system. At last, It test the bandwidth performance of multi-hop wireless Mesh network and testing results show that the system can complete the appropriate functionality to meet the application requirements.
出处
《电视技术》
北大核心
2015年第5期87-90,共4页
Video Engineering
