农机作业现场视频无线传输系统的设计与实现  

Design and implementation of agricultural machinery operations video wireless transmission system

作　　者：田野[1] 钱燕[1] 张美娜[1] 冯学斌[1] 尹文庆[1] 

机构地区：[1]南京农业大学工学院/江苏省智能化农业装备重点实验室,江苏南京210031

出　　处：《中国农机化学报》2013年第3期213-218,共6页Journal of Chinese Agricultural Mechanization

基　　金：江苏省农机三项工程项目(NJ2010-02);南京农业大学青年科技创新基金(KJ2010032)

摘　　要：为解决农业机械作业信息滞后、时效性差的问题,基于嵌入式技术和3G通信技术设计一套应用于农机作业现场的视频无线传输系统。系统中制定了一种可靠的进程间通信规约,采用H.264视频编码技术编码视频,根据RTP协议封装编码后的视频数据,使用3G无线网络作为通信信道传输视频数据给远程监控中心。试验表明,系统工作稳定可靠,能够实现每秒25帧720×576分辨率大小的实时视频的传输。To address the information lag and poor timeliness of agricultural machinery operation,a video wireless transmission system based on embedded technology and 3G wireless technology for agricultural machinery operation site was designed.In the system,a reliable interprocess communication protocol was developed,we used H.264 video coding technology to compress the video data,encapsulated the encoded video data according to the RTP protocol,and transmitted the video data to the remote monitoring center via 3G wireless networks.The experiment showed that the system was reliable,and achieved real-time video transmission of 25 frames per second and resolution of 720×576.

关 键 词：视频无线传输 3G网络 H 264视频编码 RTP 多线程 

分 类 号：S225.7[农业科学—农业机械化工程]