| With the rapid development of network communications and embedded technology,research and applications of security system have extended gradually to district andresidential areas.As one of the important areas of security technology,the videosurveillance not only plays a security function but also keeps abreast of householdsexception via the Internet.How to reduce the current video surveillance systemcost,power consumption and ease to use has gradually become the focus of currentresearch.By researching open source embedded Linux system,V4L2API and releventtechnologies, this paper has achieved security system with the remote video surveillancetaking the Samsung S3C2440microprocessor as the core hardware platform.First,this thesis reviews the research background of the remote video monitor homesecurity systems, domestic and international situation and future development trendency;and illustrates the significance and practical value of the current research;it discussesembedded system concepts and gives system hardware and software overall design.Second, this paper analyzes in detail the code structure and operation process of theBootLoader, the embedded Linux kernel and YAFFS2file system; and aslo achieves theVIVI’s modification and transplantation, the Linux kernel compiling and transplantationand the production of YAFFS2file system according to the characteristics of thehardware structure of this system.Third,this thesis introduces the relationship betweenthe device drivers and the entire hardware,software system;and also transplants a USBcamera driver.Fourth,it achieves the video data acquisition by the Video4Linux2,completes transplantation and configuration of the embedded Web server,Socketnetwork programming;and then realizes the security system with the remote videosurveillance.Showed by experiments,the system is of good scalability,ease to use,lower cost,lower power consumption,small size and so on.Thus it can effectively compensate forthe lack of ordinary home security system and have great practical value. |
