The development of CCTV monitoring system has gone through three different stages: Analog CCTV monitoring, digital CCTV monitoring based on multimedia microcomputer platform (embedded system), embedded network video The server Digital network closed-circuit television monitoring based on technology.
1. Analog CCTV monitoring system
The analog monitoring system developed earlier and is now often called the first generation monitoring system. The system features:
1) The collection, transmission and storage of video and audio signals are analog, with the highest quality.
2) After decades of development, the technology is mature and the system functions are powerful and perfect.
3) Limitations of analog video system:
A. Only applicable to a small geographical range
B. Unable to exchange data with the information system
C. Monitoring is limited to the monitoring center, Poor application flexibility
D. Difficult to expand
2. Digital Closed Circuit Television Monitoring (DVR) Based on Microcomputer Platform
DVR It is the second generation of monitoring system that has developed rapidly in recent years. It adopts microcomputer and Windows platform, and installs video compression card and corresponding DVR software in the computer. Different models of video cards can connect 1/2/4 and other channels of video, and support real-time video and audio. It is an optional solution for the first generation of analog monitoring system to upgrade and realize digitization, and a system that realizes remote video transmission (more than 1-2 kilometers). DVR System features:
A. The collection and storage of video and audio signals are mainly in digital form with high quality
B. The system functions are relatively powerful and complete
C. Data can be exchanged with information system
D. Good application flexibility
The DVR system uses analog transmission from the monitoring point to the monitoring center. Similar to the first generation system, it has many defects. To achieve long-distance video transmission, it needs to lay (rent) optical cables and install video optical terminals at both ends of the cable. The system construction cost is high, it is difficult to maintain, and the maintenance cost is high.
With the continuous development of information processing technology, embedded DVR system has emerged as a new force in recent years. Because of its high reliability and easy installation, it is widely used in banking systems. We usually call embedded DVR as the 2.5 generation monitoring system.
3. Networked digital closed-circuit television monitoring based on embedded video server
Network digital monitoring is to convert traditional analog video signals into digital signals, transmit them through computer networks, and process them through intelligent computer software. The system digitizes the traditional video, audio and control signals and transmits them on the network in the form of IP packets, realizing the digitalization of video/audio, the networking of the system, the multimedia of application and the intellectualization of management.
In order to further meet the high standard requirements of social and economic development and people's civilized life, create a safe, comfortable, warm and efficient office and living environment, and according to the needs of different types of buildings, from the specific reality of the project, achieve reasonable configuration, leave room for expansion, advanced technology, high performance price ratio, and ensure high quality system performance, High reliability.
This scheme is prepared according to the relevant documents provided by the project, the actual needs of the project, the relevant international standards and national standards, and the experience accumulated in many projects undertaken by our company. If there is anything not exhaustive about the content or other aspects of this plan, we are always ready to welcome your valuable comments.
1. Design principles
This project The scheme design follows the principle of advanced technology, complete functions, stable performance and cost saving. The construction, maintenance and operation factors shall be comprehensively considered, and room for expansion shall be reserved for future development, expansion, reconstruction and other factors. This system Design The content is systematic, complete and comprehensive; Design programme It is scientific, reasonable and operable. It has the following principles:
1. Advancement and applicability
The technical performance and quality indicators of the system shall reach the international leading level; At the same time, the installation, debugging, software programming and operation of the system should be simple and easy to master, which is suitable for China's national conditions and the characteristics of the project. The system integrates many advanced technologies in the world, reflects the latest development level of current computer control technology and computer network technology, and meets the requirements of the development of the times. At the same time, the system is a system for various management levels. Its function configuration is based on the principle of providing users with comfort, safety, convenience and rapidity, and its operation should be simple and easy to learn.
2. Economy and practicality
Fully consider the actual needs of users and the development trend of information technology. According to the user's site environment, design and select functions and system configuration schemes that are suitable for the site situation and meet the user's requirements. Through strict and organic combination, achieve the best performance price ratio, so as to save project investment and ensure the demand for system function implementation, which is economical and practical.
3. Reliability and safety
The system shall be designed with high reliability, which can ensure the accuracy, integrity and consistency of data after the interruption caused by system failure or accident, and has the function of rapid recovery. At the same time, the system has a complete set of system management strategies, which can ensure the safety of system operation.
4. Openness
Taking the existing mature products as the object of design, and taking into account the current situation of the surrounding information and communication environment and the development trend of technology, it can realize the linkage of fire protection, anti-theft and spotlight systems. It has RJ-45 network communication port, which can realize remote control.
5. Extensibility
The system design takes into account the needs of future technology development and use, with the possibility of updating, expanding and upgrading. The system functions are expanded according to the actual requirements of the project in the future. At the same time, redundancy is reserved in the design of this scheme to meet the future development requirements.
6. Pursue optimal system equipment configuration
On the premise of meeting the user's requirements for function, quality, performance, price and service, the system equipment configuration should be optimized to minimize the system cost.
7. Reserve enough expansion capacity
The control capacity of the equipment of the project shall be reserved to facilitate the transformation of new control points in the system; The system also reserves the interface to connect with other computers or automation systems; Also try to consider the future development of science and the application of new technologies.
8. Improve supervision and comprehensive management
The system equipment control of this project needs to be efficient, accurate and reliable. The system comprehensively monitors the operation of each subsystem through the central control system, and dynamically monitors and alarms the situation from time to time. CCTV monitoring greatly reduces labor intensity and equipment operation and maintenance personnel; In addition, the comprehensive overall management of the system can make the equipment operate according to the optimal combination, which can not only save energy, but also greatly reduce equipment loss, reduce equipment maintenance costs, thus improving the supervision and comprehensive management level.
Wuxi Dehang Technology Co., Ltd. provides professional IT services, Wuxi broadcast system, Wuxi projector installation, monitoring engineering, network maintenance, Wuxi Security Monitoring , Wuxi remote monitoring , Wuxi Monitoring , Wuxi cabling project, Wuxi monitoring installation, Wuxi monitoring installation company, Wuxi LAN cabling, Wuxi IT outsourcing, Wuxi network maintenance, Wuxi generic cabling system, Wuxi generic cabling company, Wuxi monitoring installation company, Wuxi server, Wuxi generic cabling company, generic cabling system, monitoring camera, we have professional scheme design engineers and professional construction teams, We will make every effort to meet the requirements of customers and ensure the quality of the project.
