Video surveillance system (1)
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Video surveillance system摘要谷歌版With the development of society, people's living standards have been leaps and bounds to enhance the development of urban transport force lags behind the overall level of development of society. Among them, the number of private cars are more and more. But the traditional parking system equipment behind, which makes parking don,t have spaces, vehicle safety and other issues become even more prominent. This gives the carpark management a new challenge, so the establishment of intelligent, design and application of new conceptual car park management system is very necessary. Things based parking lot to parking demand solutions based on the basis of existing technologies play a catalytic role, providing a convenient and comprehensive regulatory and vehicle safety issues. Implementation of the smart parking is to meet the needs of social development,it has a strong practical value and economic benefits.The design is a parking management system based on Internet of Things design and implementation of video capture system is based on a combination of development S3C2440ARM9 platform via a USB cable, network cable, Linux, SecureCRT, etc. to achieve its unique features and as much as possibleto meet the needs of the modern intelligent parking, parking environment for real-time monitoring display.绪论（Introduction）With the car in large quantities into the personal family, difficult parking, traffic and plagued become the problem of urban traffic. Experts pointed out that the phenomenon of parking difficultly also presents tremendous opportunities, urban land resources are increasingly scarce and expensive, three-dimensional, intelligent car park parking industry development direction. The same high degree of intelligence for the parking requirements are increasingly high requirements for parking management. Then for parking purposes, the safety is the most important addition to the parking spaces are to have a basic service functions. If a parking lot can not guarantee the safety of the parking of vehicles, then there will not be many parking customers, so it becomes very important for video surveillance of the parking lot, at the same time, the rapid development of the Internet to promote the global information sharing and exchange. People increasingly want to achieve remote access to information and control of the device through the network, the development of embedded systems to some extent to meet the needs in this area. Through the built-in Web server embedded systems, the user can easily browse the information and control equipment operating parameters of the system, in order to achieve remote monitoring of equipment.To ensure the safety of the user and the vehicle in this design, the safety performance of the system is improved.(1) in the design and implementation of the parking management system based on Internet of Things video capture system that uses a combination of S3C2440ARM9 development platform and Linux entire parking process monitoring, network monitoring node collection for parking informationby the control node through the local area network monitoring information to the server-side, abnormal judgment, abnormal generate an alarm signal immediately notify the system manager to take emergency measures to ensure the users personal and property safety.(2) video surveillance. To prevent vehicle theft incidents , the video monitor will sent the entire parking information to the server .then it be managed by the server, in order to prepare for laterqueries. As people's living standards rising, the rate of private car ownership is increasing every year. High security, high intelligence development and operation of the parking lot to a great extent solve people parking is difficult, the problem of low efficiency. And thus it creates a good environment for the lives of the masses.视频监控系统的概述（An overview of the video surveillance system）The video surveillance system is the ability of a security system and its intuitive, convenient and abundant information is widely used in various occasions. With the continuous development of modern technology, such as the emergence of embedded technology, computer network communication and various video processing technology, video surveillance systems are also increasingly subject to people's attention and concern and has developed rapidly, with the digital network trend.Video surveillance system experienced analog video surveillance, digital video surveillance and network digital video surveillance three stages, digital and network is the inevitable trend of development, the front-end integration, video digitizer, monitoring, networking, system integration videothe monitoring system recognized development direction. The twenty-first century information technology center inevitable trend of development of electronic technology is digital, With the development of electronic products that we use will become more and more digitized. All in all, the video surveillance network will effectively improve the monitoring range and equipment scalability. In addition, intelligent video surveillance, wireless, and IP development. In the case of very large video surveillance data, how users really need monitoring information obtained through the massive amounts of data, real-time prevention and alarm function is very important, as technology evolves, the Almighty intelligent monitoring of the system can provide people with and timely response measures.嵌入式系统及Web服务器概述（Embedded systems and Web servers Overview）The advent of the information society, making the embedded technology has become an important research direction in computer field, is bound to be more widespread concern. Current embedded products have penetrated into all areas, not only closely related to people's daily life and is closely linked with the country's future development. Embedded operating system on the target machine compatibility, and high efficiency, scalability, visualization operation, more and more rich resources, the development process is more streamlined. Network of. With the popularization of network technology, as well as information and communication technology, industrial control technology, a powerful combination, embedded devices more and more toward the development of the network. Currently, the embedded system is in a stage of rapid development of network applications.Uniform Resource Identifier (Unified Resource identifier, Jane denoted by URI), Hypertext Transfer Protocol (HyperText Transfer Protocal, abbreviated as HTTP), HTML (HyperText Markup Language, abbreviated as HTML) Web three most importantand the basic part of the supporting technologies unified resource identifier (URI) URI is a standard mechanism for naming and positioning information resources on the Internet. A unified approach on the Internet, in order to allow customers to be able to know and access the resource must be assigned a unique identifierfor each resource. This identifier should contain some information to indicate how to access the resources.The embedded Web Similarly have various characteristics of the above-described general Web and technical characteristics, but as an embedded Web, the embedded Web also has its own characteristics. In embedded devices with limited resources, a Web server can not be very comprehensive, it must have a sufficiently small capacity, and should have a Web server features and does not affect the overall performance of embedded systems. The embedded Web server technology is the core of the HTTP protocol engine. Embedded Web server through the CGI interface and data dynamic display technology, you can run the code inserted in the HTML file or table for RAM read / write data.4 ARM and embedded Linux operating systemARM is R Engineering SC processor: ARM processor can achieve load / store architecture, is a typical R for SC processor. Only load and store instructions access memory. Data processing instructions operate only on the contents of the register. ARM processors have 37 registers: 31 general-purpose registers: program counter (PC). These registers are 32-bit. The six status register: these registers are 32-bit, but only with a 12-bit. The registers are arranged into groups partially overlap (overlapping Bank). Each processor mode has a different set of registers. Grouping of registers in the processor exceptions and privileged operations can be fast context switching.Embedded systems for user needs is for embedded applications, is the most simple computer hardware and software organization to solve practical problems for the purpose of the need to satisfy the specified task. Its hardware and software can be tailored to the practical application as the center of its main features, high adaptability to the natural environment, hardware and software system itself safe and reliable. Embedded systems are often inseparable from the support of real-time operating system, the Linux operating system, not only for servers, but also to meet the needs of embedded development. Linux operating system can be customized and widely used in the embedded application development5 Embedded development platform to buildS3C2440 processor on-chip platform with rich resources, based on the configuration and expansion platform configuration of large-capacity NAND technology, highly reliable Flash memory, 64MB 16 bit Flash (K9F 1208). The system boot code, kernel code and root file system can be stored with this. RAM is two 64MB SDRAM.Building a cross-compiler environment is the first step in the development of embedded, is also an essential step. Most ARM device platform does not provide adequate resources for the use of the compilation process, so most of the compilation in the host, to establish the ARM-Linux cross-compiler environment on the host first compile the application, generate code that runs on the ARM platform.6 Design and implementation of the monitoring system hardware and softwareS3C2440 has standard USB1.1 interface, it can lead to a standard USB plug, the S3C2440 pin DNO and DPO. DNO D in the USB communication signal, while the DPO is USB communication in the D + signal.Servfox transplantThe document servfox folder to linux virtual machine under / opt / EmbedSky / Next, modify the Makefile. First to enter servfox folder; then vi makefile found on line 7 modified to enter edit mode (i) for CC = arm-linux-gcc. The line 12 Modify found for the SERVFLAGS exit = -02-DLIUNX $ (warnings)-I / / home/test/temp6410/linux-2.6.28.6/include (Note that to be exactly the same) and then ESC shift + colon enter: wq (save) . The modify spcav4l.c find 367 lines of modification to enter edit mode (i) will generate servfox ported to ARM board with the directory.(1)can be used to mount directly to the ARM board from the virtual machine2) can be used to the tftp transfer or port transfer (to using HyperTerminal operation), from the virtual machine to the windows to the ARM board. After that there is the most important part. Www folder to the ARM board instead of inside the Web folder (you can use the mount method or HyperTerminal transmission to ensure that the ARM board is properly connected to the computer, IP connection is normal, the camera is properly connected.7 Video surveillance system integration and testingFriendly arm mini2440 development board, as a core processing chip, the S3C2440 development board GPIO port, USB interface, level conversion chip MAX3232, audio processing chip UDA1341 and Ethernet control chip DM9000, with the relay module, USBthe camera module is connected to the various functions of the remote monitoring.In the primary stage of commissioning, the system mainly uses a real-time test, that is constantly judge and deal with change in signal serial signal. And on whether the system is to achieve the required functionality to be tested. User through the distant client access monitoring system services platform, users can realize through this platform remote video monitoring.。
