With the rapid development of computers, network transmission technologies, and image processing technologies, the field of video surveillance is undergoing a revolution. The traditional CCTV-based analog video-only video archiving and recording system is no longer in sight. Instead, it is an efficient and flexible digital system. Driven by strong market demand and innovative technologies, digital video surveillance systems have achieved rapid development in recent years. Nowadays, digital video surveillance systems have been widely deployed in public places such as airports, railway stations, ports, supermarkets, banks, etc., effectively safeguarding the maintenance of normal social order, especially in responding to emergencies, digital video surveillance systems rely on their enormous The flexibility can not only effectively monitor the scene and record evidence, but also help to track and detect the progress of the work. The advantages brought by digitalization are about to completely change the landscape of video surveillance. Digital video recorders, digital video servers based on IP networks, and IP cameras are becoming the mainstream in video surveillance.
IP video surveillance system consists of:
System front-end unit: It mainly includes the collection and encoding of video and audio and data (IP cameras, heads, domes, shields, and network video servers).
Transmission part: mainly various network transmission equipments, the system selects different network equipments differently (such as network switches, photoelectric switches, optical fiber transceivers, optical fiber Ethernet switches, optical transmission equipment, satellite transmission equipment, etc.).
Monitoring Center: Mainly video browsing, control, and management (including video decoding equipment, servers, management software, splicing display walls, disk arrays, etc.).
Workstation: Mainly video browsing and control (including server and client software).
IP Video Surveillance System Features and Benefits
1. Easy to manage - flexible and convenient management mode, reducing monitoring and maintenance cost management Flexible and convenient management is the natural advantage of IP. VM (video management server) and DM (data management server) together constitute the management core of IP monitoring solution and can implement Intelligent management of all monitoring equipment and monitoring services.
2, high reliability - telecommunications equipment, professional and reliable IP-SAN storage, to meet the monitoring of high-reliability storage The system uses the IP-SAN as a monitoring data storage device, you can achieve centralized deployment in the distributed deployment, cross-domain Sharing, smooth expansion, compatibility, interoperability, etc. In addition, there are many unique advantages in terms of reliability, such as support for RAID, support for online hot-swapping of hard disks, support for short-circuit protection of hard disk power, support for optional redundant hot-swappable power supplies, and support for power supplies Automatic failover and so on.
3, easy to use (1) real-time monitoring: convenient real-time monitoring operations: support GIS map operations, mouse drag, professional keyboard and other operating methods; convenient image scheduling is simple: network-based global image scheduling;
(2) Front-end control: low delay (less than 300ms);
(3) Query playback: end-to-end iSCSI block storage, eliminating the need for streaming media server farms and simplifying network architecture;
4. Service Convergence: The integration of multimedia applications for IP monitoring, videoconferencing, and VoIP supports the convergence of services on the IP platform. In the event of an unexpected situation, emergency video conferences can be convened for remote guidance, remote consultation, and video conferencing. Watch real-time/historical playback images for monitoring; videoconferencing images can be broadcast to the DC wall on the monitoring command center; IP voice can be broadcast to the front-end monitoring site of the monitoring system.
5. Easily expandable - using advanced architecture, standardization technology This solution fully integrates technologies in the fields of IP network, video, storage, and signaling, and adopts an open NGN architecture and standard technologies. The system introduces the advanced concepts of signaling control and media stream exchange into the video surveillance system. Satisfy all kinds of monitoring and construction, it will not be limited to one manufacturer. It is convenient to expand and protect user investment.
IP video surveillance system applications
Currently, IP video surveillance systems are moving in the direction of a unified deployment and data sharing monitoring network. The video surveillance solutions of many manufacturers have achieved unified monitoring, unified storage, unified management, and resource sharing. Almost every industry has a variety of needs, and in 2009 will continue to generate more new applications to meet the monitoring needs. Currently common are:
Security areas: social security monitoring, safe cities, etc.;
Education: Campus security monitoring, electronic examination room monitoring, online teaching, distance education, etc.
Power sector: Unattended room, unattended substation, monitoring of power plant safety production management, etc.;
Public security law areas: community monitoring, urban security monitoring, prison security monitoring, live trials, etc.;
Force system: communication room monitoring, operational command system, storage material monitoring, daily management monitoring system for grassroots companies, etc.;
Petrochemical field: oil well monitoring, oil storage monitoring, gas station monitoring, petrochemical plant safety production monitoring, etc.;
Banking system: Networking of bank monitoring systems, savings monitoring, vault monitoring, etc.;
Railway system: station dispatch management system, station safety management, emergency command system, etc.;
Tax System: Tax Service Hall Monitoring;
Steel field: safety production management monitoring system;
Environmental protection: monitoring of pollution sources, comprehensive environmental protection systems, etc.
Medical field: surveillance of intensive care units, live operation and teaching systems, and daily safety management monitoring;