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Introduction to monitoring technology of the "four modernizations" development
Publishing Time:2006-4-07 10:04  No.of Visits:2169

Throughout the current monitoring industry, it is not hard to find, simulation of the image digitization, network transmission technology, intelligent system integration trend process is growing faster. Compared with many other industries, monitoring industry have been affected more by the development of IT industry, with the combination of the IT industry more closely, the mature technology of the development of almost all in the IT field are monitored industry re-innovation, monitoring industry new product launch is mark with digital and network. So monitoring technology development trend is closely related to the big trend in the development of IT technology, and more dependent on the technology progress and popularity.

Monitoring technology is a major trend in the development of digitalization and networking, integration and intelligence, IT has been recognized by most people, then the digital, network, integration and intelligent of the four application characteristics and development direction in the field of technology in monitoring and product features, is now need to discuss problems, treat the problem, the experts in the field of monitoring and the experts in the field of IT may come to the conclusion that is not the same.

Lead into the digital and network monitoring technology wave and one of the factors is the key in the field of video surveillance products, the successful application of hard disk video recorder and industrialized production, the popularization of its application process is to monitor the development of the digital and network technology.

Hard disk video recorder is a collection of image acquisition and compression storage, video image centralized monitoring and management, remote monitoring for the integration of monitoring products, its emergence, direct analog video tape recorder, image segmentation, guide to exit the market simulation monitoring products, and replaced most of the small and medium-sized matrix control host and alarm host, become the core products in the field of monitoring. From the technical developing trend of hard disk video recorder, can see clearly the future monitoring technology development venation.

The first trend is digital monitoring technology

Monitoring in the field of digital is mainly refers to monitoring digital video images, including digital audio and video information conversion, compression, storage, three big aspects. From the point of monitoring industry the requirement of image quality, monitoring the development of digital video standards within the industry and civil video technology will follow the development of common, clear, high-definition (VCD, DVD - HDVD) development model. Therefore, the development of digital video technology in the future will be in high resolution direction development, in the next few years the unity of the image compression algorithm and the image format is digital monitoring need to be solved urgently. For high-definition system requires better image quality, higher processor speed, more storage space, so the relevant numerical technology, chip technology, hard disk storage technology for continuous exploration development. High definition digital monitoring technology reserves has been completed.

Algorithm for h. 264 technology represented by the high-resolution algorithms start application; Chip technology, has been on the market can be completed standard h. 264 - D1 algorithm of the single chip, realizes the around 1 m rate DVD image quality compression storage; Thousands of G hard disk hard disk storage technology, successful development, will soon to the market. The above technology is essentially the development of IT technology, but its development also indicate the direction for the development of monitoring technology, monitoring enterprise how to use technology to create conditions for their own development of the IT industry, take advantage of the technology of IT industry to develop products that meet the high definition monitor market demand, find a proper breakthrough point for the market and technology and timing, will become one of the technology in the future development direction in the field of monitoring.

The second trend is network monitoring technology

With digital as the foundation, the development of network has become another key factor in the development of monitoring technology. Surveillance industry has a characteristic is many projects need to implement remote monitoring and centralized management. Traditional remote monitoring method is to use fiber as transmission medium, direct transmission of simulating image, this method system has many advantages, such as high cost, poor scalability, maintainability, and can only be used in the field of military, transportation and other special, cannot reach the civilian monitoring field. And use of network operators to provide interconnection network as a transport platform, system implementation is simple, strong scalability, cost and use cost in accordance with market demand, therefore, in recent one or two years, based on the network application of digital surveillance products.

At present there are mainly three kinds of network monitoring products, the technology development trend of each are not identical.


1. The device network function of digital hard disk video recorder

Digital hard disk video recorder main function is to provide users with high quality, real-time video, meet user data storage and query for a long time for the monitoring requirements, network functions as one of its functions, main implementation within the local area network (LAN) and download image transmission, the current technology development trend is to network video server functions and its combination, to achieve a large networking system requirements.

2. Network camera and network video server

Network camera and network video server is mainly used for remote monitoring and control system, the main technology development trend is how to under the condition of the existing network, meet the demand of security monitoring technology of remote monitoring system. System to the original design is not considered due to the network for transmission of real-time, reliable, clear video images, so how to make use of existing network environment, application of streaming media technology or developing new suitable for network monitoring network transmission technology of the market, to solve the contradiction between the network bandwidth and the image quality, ensure the security of network transmission, is the network camera and network video server technology development direction.

3. The network digital matrix

Network digital matrix is nearly a year of two new network monitoring products, mainly complete network video transmission management, switching, display, and other functions, the product features and market positioning is not unified form. The future technological development direction mainly and digital hard disk video recorders, network cameras and network video server, the combination of large-scale network monitoring host function.

The development trends of monitoring technology and the third is integration

Monitoring technology embodies in network system integration, network security industry manufacturers, often provides a network node device, the device can be used in a standard network protocol and network connection, is to meet the needs of users according to their own management network system, so the security industry manufacturers in the development of network monitoring equipment, the need to provide the corresponding network interface software, developed by system integrators to further meet user requirements of system management software, to meet the different needs of users.

The third one is a development trend of intelligent monitoring technology

Traditional monitoring system only provide image information for safety management personnel to determine, when security managers are faced with huge Numbers of video data, often can't timely and accurate for events or special characters make the right judgment, so the new technology change the artificial judgment to computer intelligent judgment. The technology can be divided into:

1. The image recognition technology

Monitoring in the field of image recognition technology is mainly refers to facial recognition technology, this technology can be used in access control, real-time dynamic check and personnel match the system storage of suspicious personnel, suspicious personnel storage and alarm in time, for safety management personnel handling.

2. Intelligent image retrieval technology

With growing digital surveillance system, especially the establishment of social public security network monitoring project image could be as many as thousands of even tens of thousands of point to point, security personnel to monitor all of the image scene, a large number of video is stored in large disk array, how in the vast amounts of data timely and accurately find the needed information, intelligent retrieval technology will provide comprehensive help.

3. Intelligent image alarm technology

Intelligent image alarm technology is an application of the image recognition technology, it is through the special algorithm, to determine whether there is abnormal moving objects in the scene image, whether there is a legacy of dangerous goods, whether there are stranded the personnel, whether there is crossing the line of the invaders, and so on, if I found on several situations will send out alarm information in time, and transmit the image to the safety management personnel, don't need a manager staring at the screen to judge.

Digital, networked, intelligent systematic, on behalf of the modern monitoring technology development direction, the four kinds of technologies and complement each other, in combination with each other and penetration, when monitoring technology and IT technology constantly fusion, the IT industry advantage and market advantage industry will deeply influence the development of monitoring and its characteristic is more superior product performance, quality reliable, low cost more, and constantly promote monitoring technology to the more popular and in-depth development.