The Safe City system is faced with an unprecedented large-capacity monitoring in the surveillance industry. Monitoring points are spread throughout the city, with a large number of monitoring sites and users. How to effectively manage these resources and achieve a rational arrangement and management of the system is a key.
With the development of the Internet, computer technology and video processing technology, the use of broadband networks for video transmission and applications has gradually become the direction of development in the field of video surveillance. As early as 2002, the research and development of video surveillance services based on broadband networks has started. After continuous improvement and improvement, the current construction of safe cities based on third-generation network video surveillance technology has gradually gained popularity.
The network composition of the safe city 1, the front-end equipment front-end equipment to complete the video capture, detector alarm signal generation, PTZ cover, etc. control, alarm output, action output and other functions. Front-end equipment mainly includes cameras, power zoom lenses, detectors, smoke detectors, temperature and humidity sensors, infrared lights, heads, shields, decoders, lights, siren, security lights, monitors, alarm control host and other equipment .
Its core equipment is a network camera, which is mainly responsible for the collection of on-site audio data, and can control the on-site peripheral equipment by outputting switching signals to achieve the purpose of collecting on-site data and real-time resolution of dangerous situations.
2. Digitized processing and recording part The digital processing and recording part is the core of the system solution. It completes the functions of analog video surveillance signal digital acquisition, MPEG4 compression, monitoring data recording and retrieval, and hard disk recording. In line with the principle of comprehensive cost-effectiveness and priority in performance reliability, the system adopts independent channel cards for each channel and separate monitoring signals for each channel. It is equipped with a high-performance processing host and has redundant system processing capabilities, which is easy to upgrade.
3, control, communication system control including camera PTZ, lens control, alarm control, alarm notification, automatic manual defense, anti-theft lighting control and other functions, the same user's work is only click on the central monitoring system desktop mouse. Therefore, ease of operation is a significant feature of digital surveillance systems.
Networking of Video Surveillance System When building a video surveillance system in Pingan City, the most commonly used networking methods are centralized or distributed systems.
1. Centralized system Among them, the centralized system is mainly suitable for small and medium-sized network video surveillance. Its main feature is a full network management center in the system. The entire network management center is responsible for the management of the entire network business, business statistics, business analysis, data backup, video distribution, route scheduling, and billing. The decentralized system is suitable for large-scale network video surveillance systems. The main feature of the system is a full-network data management center and multiple regional management centers. The entire network data management center is only responsible for the management of the entire network business, business statistics, business analysis, data backup, route scheduling, etc. Its data acquisition method is to directly obtain data from the regional management center for processing, thereby saving network bandwidth and reducing System bottlenecks (including network bottlenecks and server bottlenecks).
2. Decentralized networking At present, decentralized networking is the mainstream mode of Ping'an City network. When building a large-scale network video surveillance system, a hierarchical structure can be implemented based on the monitored regional scope and business needs, forming a provincial-level monitoring center as a first-level platform, and the surrounding prefectures and cities as secondary platforms for large-scale radial network video surveillance systems. The secondary platform can be expanded according to actual needs: secondary front-end platform, secondary client platform, secondary distribution platform, secondary storage platform; secondary platform can be installed on one server or multiple servers; secondary platform IP-based communication with the main platform allows the storage, distribution, and access servers to be moved down to the county center to form a three-tier platform.
With the development of the Internet, computer technology and video processing technology, the use of broadband networks for video transmission and applications has gradually become the direction of development in the field of video surveillance. As early as 2002, the research and development of video surveillance services based on broadband networks has started. After continuous improvement and improvement, the current construction of safe cities based on third-generation network video surveillance technology has gradually gained popularity.
The network composition of the safe city 1, the front-end equipment front-end equipment to complete the video capture, detector alarm signal generation, PTZ cover, etc. control, alarm output, action output and other functions. Front-end equipment mainly includes cameras, power zoom lenses, detectors, smoke detectors, temperature and humidity sensors, infrared lights, heads, shields, decoders, lights, siren, security lights, monitors, alarm control host and other equipment .
Its core equipment is a network camera, which is mainly responsible for the collection of on-site audio data, and can control the on-site peripheral equipment by outputting switching signals to achieve the purpose of collecting on-site data and real-time resolution of dangerous situations.
2. Digitized processing and recording part The digital processing and recording part is the core of the system solution. It completes the functions of analog video surveillance signal digital acquisition, MPEG4 compression, monitoring data recording and retrieval, and hard disk recording. In line with the principle of comprehensive cost-effectiveness and priority in performance reliability, the system adopts independent channel cards for each channel and separate monitoring signals for each channel. It is equipped with a high-performance processing host and has redundant system processing capabilities, which is easy to upgrade.
3, control, communication system control including camera PTZ, lens control, alarm control, alarm notification, automatic manual defense, anti-theft lighting control and other functions, the same user's work is only click on the central monitoring system desktop mouse. Therefore, ease of operation is a significant feature of digital surveillance systems.
Networking of Video Surveillance System When building a video surveillance system in Pingan City, the most commonly used networking methods are centralized or distributed systems.
1. Centralized system Among them, the centralized system is mainly suitable for small and medium-sized network video surveillance. Its main feature is a full network management center in the system. The entire network management center is responsible for the management of the entire network business, business statistics, business analysis, data backup, video distribution, route scheduling, and billing. The decentralized system is suitable for large-scale network video surveillance systems. The main feature of the system is a full-network data management center and multiple regional management centers. The entire network data management center is only responsible for the management of the entire network business, business statistics, business analysis, data backup, route scheduling, etc. Its data acquisition method is to directly obtain data from the regional management center for processing, thereby saving network bandwidth and reducing System bottlenecks (including network bottlenecks and server bottlenecks).
2. Decentralized networking At present, decentralized networking is the mainstream mode of Ping'an City network. When building a large-scale network video surveillance system, a hierarchical structure can be implemented based on the monitored regional scope and business needs, forming a provincial-level monitoring center as a first-level platform, and the surrounding prefectures and cities as secondary platforms for large-scale radial network video surveillance systems. The secondary platform can be expanded according to actual needs: secondary front-end platform, secondary client platform, secondary distribution platform, secondary storage platform; secondary platform can be installed on one server or multiple servers; secondary platform IP-based communication with the main platform allows the storage, distribution, and access servers to be moved down to the county center to form a three-tier platform.
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