摘要
针对目前隧道中视频监控范围受限的问题,提出采用云台摄像头的监控方案;首先构建最基本的微控制处理单元,由Nand Flash和SDRAM存储电路、RS和USB接口电路、S3C2440核心处理器组成;其次通过RS-485接口连接云台摄像头,在设备接口文件中编写程序对它实现移动控制;最后在Linux内核中引入FFmpeg编码软件,采集的数据编码后利用设计的DM9000A连接电路把数据传输到远程客户端;实验验证了摄像头能上下左右移动,采集到的图像清晰,实现了隧道监控目的。
In view of the limited scope of video surveillance in tunnel, monitoring schemes using cradle head camera is put forward. This paper firstly build the most basic of micro control processing unit, it is made up of Nand Flash and SDRAM memory circuit, RS and USB in terrace circuit, S3C2440 processor core. Secondly cradle head camera is connected through RS--485 interface, meanwhile the program are written in the device file in order that cradle head camera is controlled by a remote client. Finally, system introduces the FFmpeg encoding software in the Linux kernel, at the same time designs connection circuits of DM9000A chip, by using it the encoded data is transmitted to a remote client. The experimental results show that camera can move up and down, and transmit the clear image, realizes the goals for tunnel monitoring.
出处
《计算机测量与控制》
北大核心
2014年第4期1090-1092,1095,共4页
Computer Measurement &Control
基金
山西省青年科技研究基金(2013021020-2)
