基于ARM11的图像采集与传输系统设计与实现

Design and implementation of image acquisition and transmission system based on ARM11

为实现大麦田间状况的远程监测和及时有效的农业生产管理,设计开发了一种基于ARM11微处理器和Linux操作系统的嵌入式无线远程视频监控系统。该系统选取S3C6410并构建Linux操作系统为采集节点,采用ZigBee构成田间信息采集无线局域网络,选用0V9650摄像头采集图像,用Video4Linux调控和接收视频,视频通过研究改进的优化H.264编码后,通过无线网桥传送到接收端解码存储和显示。结果表明:该无线视频监控系统运行稳定,传输压缩率高于93%,误包率小于5%。

In order to realize remote monitoring and effective agricultural production management in barleyfield, the paper presents a video acquisition and wireless transmission system for barley growth surveillance basedon ARM11 and Linux operating system. In this system camera OV9650 was selected as image acquisition device,S3C6410 as a key processor to build a Linux operating system platform in which V4L was used for barley imageacquisition and control. The images were transferred to a far terminal receiver by coded with H264,where ZigBeenetwork was consisted of coordinator and accessing nodes and a pair of wireless bridges were used forcommunication. The paper also presents H. 264 coded optimization project. The results showed that this wirelessimage monitoring platform run well and the compression rate of transmission is higher than 93 % , the packet errorrate is less than 5%.