基于无线Mesh网络的视频传感器节点研究与设计
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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 are important factors 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. In this article,the framework design of video monitoring system is completed based on WMN and the performance of several kinds of WMN routing methods are compared 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.
Video information transmission plays an important role in disaster relief,emergency communications and special regional monitoring. However,adaptability and network bandwidth are important factors 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. In this article,the framework design of video monitoring system is completed based on WMN and the performance of several kinds of WMN routing methods are compared 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.
引文
[1]李勋.无线视频监控系统关键技术研究[D].吉林:吉林大学,2012.
[2]吴新生.基于ARM/Wi Fi/QT的无线视频监控系统的开发[J].计算机系统应用,2013(8):76-78.
[3]赵增华,王楠,窦志斌,等.基于IEEE802.11的长距离无线Mesh网络[J].计算机学报,2012(6):1209-1222.
[4]吴越,孙东来,易平,等.无线Mesh网络试验床的构建与应用[J].电信科学,2008(9):70-73.
[5]王嵚琦,何新贵,徐明.无线Mesh网络路由协议的研究进展[J].计算机工程与设计,2009(10):2341-2345.
[6]宋建勋,刘峰.基于TMS320DM365多平台实时视频传输系统的设计与实现[J].电视技术,2011,35(7):32-35.
[7]邹修国,章世秀,刘德营.基于ARM+DSP的农田害虫识别系统设计[J].电子技术应用,2012(9):128-130.
[8]卢灵,周贤军.基于Wi Fi的嵌入式视频监控系统设计[J].电视技术,2013,35(1):157-160.
[9]王昱,邵浩然.基于V4L的WEB型嵌入式视频监控体系设计[J].科技通报,2013(9):133-136.
[10]沈沛意.DAVINCI技术剖析及实战应用开发指南[M].西安:西安电子科技大学出版社,2012.
[11]蒋文芳,赵利,莫金旺.AODV算法在无线Mesh网络中的开发与实现[J].计算机工程与设计,2010(15):3383-3385.?
[2]吴新生.基于ARM/Wi Fi/QT的无线视频监控系统的开发[J].计算机系统应用,2013(8):76-78.
[3]赵增华,王楠,窦志斌,等.基于IEEE802.11的长距离无线Mesh网络[J].计算机学报,2012(6):1209-1222.
[4]吴越,孙东来,易平,等.无线Mesh网络试验床的构建与应用[J].电信科学,2008(9):70-73.
[5]王嵚琦,何新贵,徐明.无线Mesh网络路由协议的研究进展[J].计算机工程与设计,2009(10):2341-2345.
[6]宋建勋,刘峰.基于TMS320DM365多平台实时视频传输系统的设计与实现[J].电视技术,2011,35(7):32-35.
[7]邹修国,章世秀,刘德营.基于ARM+DSP的农田害虫识别系统设计[J].电子技术应用,2012(9):128-130.
[8]卢灵,周贤军.基于Wi Fi的嵌入式视频监控系统设计[J].电视技术,2013,35(1):157-160.
[9]王昱,邵浩然.基于V4L的WEB型嵌入式视频监控体系设计[J].科技通报,2013(9):133-136.
[10]沈沛意.DAVINCI技术剖析及实战应用开发指南[M].西安:西安电子科技大学出版社,2012.
[11]蒋文芳,赵利,莫金旺.AODV算法在无线Mesh网络中的开发与实现[J].计算机工程与设计,2010(15):3383-3385.?