|
导读:这是一篇英国留学生写作的essay范文（工程学专业），讨论了视频监控。视频监控系统是安全防范技术体系中一个重要的组成部分。随着计算机和图像处理等技术的飞速发展，视频监控制技术也得到飞速发展。视频控制系统应用领域广泛，而且发展迅速。数字视频监控是新近崛起的以计算机技术及图像视频压缩为核心的新型视频监控系统，该系统解决了模拟系统部分弊端而迅速崛起，但仍需进一步完善和发展。 Video monitoring system is an important part of safety technology system. At present, the application of this system in China is developing very fast and the market competition is fierce. In this design, video monitoring system mainly consists of the following parts: image information collection and preview; Simple control, storage and playback of the captured image. With the rapid development of computer technology, the whole system is developing towards digitalization, networking and integration. 视频监控系统是安全技术系统的重要组成部分。 目前，该系统在中国的应用发展很快，市场竞争激烈。 在此设计中，视频监控系统主要包括以下部分：图像信息采集和预览; 简单控制，存储和回放捕获的图像。 随着计算机技术的飞速发展，整个系统正朝着数字化，网络化和集成化的方向发展。 The development of video monitoring system has gone through three stages. Before the early 1990s, it was mainly a closed-circuit television monitoring system with analog equipment, called the first-generation analog monitoring system. In the mid - ninety - s, with the improvement of computing power and the development of video technology, people use high-speed data processing ability of computer video acquisition and processing, using high resolution of display image showed more, thus greatly improving the image quality, the multimedia master station system based on PC is called the second generation of digital video monitoring system of local. In the late 1990s, with the rapid improvement of network bandwidth, computer processing capacity and storage capacity, as well as the emergence of various practical video processing technologies, video monitoring entered the fully digital network era, known as the third generation remote video monitoring system. Based on the network, the third-generation video monitoring system takes the compression, transmission, storage and playback of digital video as the core, and the intelligent and practical image analysis as the feature, triggering the technological revolution of video monitoring industry, which is highly valued by the academic circle, the industry and the use department. In recent years, with the rapid development of computer, network, image processing and transmission technology, video monitoring technology has also achieved rapid development. Due to the wide application of video control system and its rapid development, two products of digital control, analog video monitoring and digital video monitoring, have been launched in the domestic and foreign markets. The former technology has been very mature and stable in performance, and has been widely applied in practical engineering, especially in large and medium-sized video monitoring engineering. The latter is a new video monitoring system with computer technology and image video compression as the core. This system solves some disadvantages of the simulation system and rises rapidly, but it still needs to be further improved and developed. With the advent of the digital information age, digital high-tech products are increasing and improving day by day. In order to improve and perfect the production, management level and increase the competition, all industries try to adopt perfect high-tech products first. Video monitoring system is one of the products of the information age. Video monitoring system is an ideal tool for high quality management. Is also a public security, anti - theft prevention is essential to a strong right-hand man. It can greatly reduce unnecessary manpower, monitor visual area in real time, control the actual work status on the site, reflect everything happening in real time and quickly, and facilitate managers to deal with emergencies in a timely manner. In order to meet the needs of informatization, in accordance with the technical specifications of video monitoring system and in combination with the characteristics of modern requirements, this paper adopted advanced and reasonable design ideas and relatively perfect equipment to design and realize the video monitoring system, striving to achieve the perfect combination of reliability and advanced nature of electronic monitoring system. In the design of the scheme, due to the full consideration of the application of current demands and the rapid development demands in the future, the overall functional facilities of the system are equipped according to the complete functions, practical, convenient to use, reliable quality and advanced technology with capacity expansion. Carefully analyze the price, function, stability and reliability of each system product, and adopt mainstream products according to the principle of high reliability and high cost performance; System integration is carried out on the principle of high overall security, stable performance, less maintainable failure and simple system operation. In a word, it should embody the overall design idea of advanced and practical, convenient operation, high degree of automation and safety and reliability. Strictly in accordance with the relevant provisions of the state, combined with the specific situation, with the best design scheme, adopt the advanced and mature technology and equipment and materials, not only meet the demand of the current, and combining the need of high-speed data transmission, to keep the whole system in a period of advanced and good expansibility, so as to adapt to the development of information industry of the future business and technology upgrading. Video monitoring project is an advanced and complex comprehensive system project. From the beginning of the system design, including the whole process of construction, installation, commissioning and final acceptance, the standardized design and management of the system should be completed in strict accordance with the relevant national standards and norms. At last, formal test and acceptance report and complete set of construction drawings and technical data are submitted for the user's file. The main specifications implemented include the national standards of the People's Republic of China and the public safety industry standards of the People's Republic of China: While designing the scheme of this monitoring system, the present needs and future long-term interests should be fully considered. First of all, it should meet its basic functional needs and meet the requirements of economic and practical use. In addition, it should fully consider the future development needs, have extensibility, fully protect existing investment, and have a high cost performance ratio. The construction of the system should be strictly in accordance with relevant national, local and industrial standards and norms. In the absence of standards and norms, the relevant national, local and industry standards and norms should be referred to the development of standards and norms. The analysis, design, implementation and testing of the system shall be strictly in accordance with the software engineering standards and specifications, and open technologies and international mainstream products shall be adopted as far as possible to ensure that the system conforms to international open standards. The construction of video monitoring system directly affects the use effect, external image and investment return. Therefore, the system design must be safe and reliable. This plan has fully considered the adoption of mature technologies and products, and the optimized plan is adopted in equipment selection and system design. And from the line laying, equipment installation, system debugging services and other aspects, fully meet the requirements of reliability. The signal processing part of video should include the following contents: set the camera for video signal collection at the monitoring point; The video signals collected by the camera are connected to the control room for monitoring activities through video cable. After video frequency division equipment and signal amplification equipment are used to process video signal frequency division and amplification in each control room, one set of signals is used for video monitoring on site, and the other signals are provided to other control rooms or dispatch rooms. The signal used in the field monitoring is connected with the industrial TV monitor through the picture splitter or matrix controller to complete the monitoring purpose of video information in the field. After video signal is processed with video 2 frequency divider in the dispatch room, one set of signals is used for integrated video monitoring in the dispatch room, and another set is provided to the digital signal processing part for processing. |
 |
|||
| 网站地图 |
