Development Of Network Video Surveillance Alarm System Based On ARM Embedded

With the technology development and social progress, network video surveillance alarm system is widely used in many occasions for its intuitive, accurate and rich information content, has penetrated into domestic security, urban security, transport, industry and other fields, it plays an increasingly important role in people's daily life.For the actual needs of video surveillance system, combination of embedded technology, image processing technology, network technology and embedded WEB technology, designed and implemented an embedded WEB server as the core, useing C/S structure of the network video surveillance alarm system. The system is embedded S3C2440 microcontroller as the core platform, useing embedded linux operating system, camera through the USB data acquisition and video compression for the JPEG format, send to the embedded WEB server through the CGI interface. Embedded Web server is directly connected to the Internet, waiting for the client's request, provide real-time video image to monitor for the client.At the same time, a simulation of four-way switch for selecting the four-way warning signals,and LED lights to indicate alarm. Customers do not need special client monitoring software, they can access the server and site monitoring only with an ordinary browser. The system is compact size, stable performance, real-time and can be directly connected and so on.Introduces the hardware in the system the function of each module and its selection, focused on the analysis and design of a circuit diagram of the module circuit, detailed analysis of the embedded Web server and how to build a working principle in system software, focuses on how to use video Video4Linux API function Data Acquisition, video image data storage, the concrete realization of the network communication process and methods, as well as alarm signals in the process of generating and alarm. In addition the system for the establishment of embedded development environment, The system software development platform to build, production and transplantation of bootloader, custom linux system with the transplant and with the file system of production and transplantation, have carried out detailed analysis and discussion.The design of the development of ARM-based embedded network video surveillance alarm system can operation stablely under S3C2440A microprocessor and arm-linux operating system,and it achieve the desired results.