基于ARM11的高清网络实时监控系统  

Real-time monitoring system for high-definition network based on ARM11

作　　者：刘伟杰 李博[1] LIU Weijie;LI Bo(Key Laboratory of Ministry of Education for Instrumentation Science ＆ Dynamic Measurement, North University of China, Taiyuan 030051, China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《现代电子技术》2018年第12期47-51,共5页Modern Electronics Technique

基　　金：国家自然科学基金项目(61471325)~~

摘　　要：针对高清远程监控带来传输带宽增加的压力和时延、保存监控视频的周期短的问题,设计一种基于ARM11的高清网络实时监控系统。采用USB摄像头基于V4L2接口采集图像,结合H.265视频编解码技术,以RTP协议打包封装H.265视频码流经网络传输到Web服务器,利用CGI,Java Script技术实现多种智能终端登录浏览器显示监控画面,在此基础上实现在LCD终端实时显示监控画面。经测试,该监控系统画面清晰无抖动,网络延时在500 ms以内,视频压缩比在130左右,满足高清视频监控数据的存储。In allusion to the problems of pressure and delay caused by transmission bandwidth increase,and short period of stored monitoring videos in high-definition remote monitoring,a real-time monitoring system for high-definition network based on ARM11 is designed. The USB camera is used to collect images on the basis of V4 L2 interface. By combining with the H.265 video codec technology,the H.265 video code streams are packaged and encapsulated by using the RTP protocol,and transmitted to the Web server via network. The CGI and Java Script technologies are used to realize multiple intelligent terminals ′ login onto the browser for the display of monitoring screen,and on the basis of which,the real-time display of monitoring screen on the LCD terminal can be realized. The test results show that the monitoring system has clear images without any jitter,network delay within 500 ms,and video compression ratio of about 130,which can meet the storage requirement of monitoring data for high-definition videos.

关 键 词：ARM11 V4L2接口 网络实时监控 RTP协议 WEB服务器 LCD终端 

分 类 号：TN948.6[电子电信—信号与信息处理]