I. Overview of the system

With the continuous deepening of safe city construction and scientific and technological police work, all localities are striving to build a set of social security dynamic network digital monitoring system for the purpose of combating and preventing crimes, and the construction of safe city monitoring system can effectively protect the personal and property safety of urban residents。With the progress of technology and the maturity of the background management system, the safe city monitoring system will bring more security to people and truly realize the harmony and safety of the whole city and even the whole country。After completion, the "social security dynamic network digital monitoring system" uses its own laser night vision camera equipment to achieve video sharing functions of public security bureau, traffic police brigade, law enforcement bureau, urban management bureau and other departments through the network, so as to achieve multi-department sharing in a construction, effectively saving the government's financial, material and human resources。As one of the effective ways of public security information management, the intensity, degree and breadth of its construction will improve the unified command, rapid response and coordinated operation level of the city's public security management to a certain extent。

The current day monitoring is not a problem, the function of the camera can be fully met, but at night a large number of infrared LED lighting is used, infrared LED light action distance, short life, poor effect。Shenrong company gives play to the advantages of laser night vision, specially developed for the safe city series of laser night vision, has been widely used in the security monitoring of major cities, for many projects and city day and night monitoring to provide high-quality products and services。

  The safe city video surveillance scheme takes into account the day and night video acquisition of key intersections and places, urban high-altitude lookout, mobile monitoring vehicles and other front-end, adopts optical fiber and ADSL network transmission, compatible with CDMA and 3G wireless transmission, and the back-end display and control system adopts hierarchical display and control, highlighting the technical characteristics of intelligence。

Second, system characteristics

 ■ Own high-definition laser night vision system, continuous work day and night

 ■ Rich intelligent functions such as power off memory, protocol adaptive, image enhancement, etc

 ■ Can integrate intelligent behavior analysis system, timely alarm, to achieve prevention

 ■ Embedded system platform to achieve real digital high-definition real-time monitoring

 ■ Powerful system management software, to achieve distributed storage, multi-level system cascades, support wireless network access

 ■ Flexible networking and convenient expansion

 ■ Front-end outdoor equipment protection class IP66, high reliability design, resistant to harsh environment

Third, system structure

 1.Key area monitoring

For key areas, such as banks, stations, intersections, government offices, residential areas, etc., continuous monitoring is needed day and night。For areas with dark ambient light at night, laser night vision products with an imaging distance of 200 to 400 meters at night and 500 to 800 meters at day can be selected。The unit price of such products is low, the degree of intelligence is high, and large quantities can be distributed and controlled by multiple points。Form an effective video surveillance coverage area。

2.High altitude observation

Urban high-altitude lookout system refers to a video surveillance system composed of PTZ cameras and supporting transmission, display, control and other equipment arranged 30 to 100 meters from the ground in the city, or even more than 100 meters, to achieve real-time video surveillance within a radius of several kilometers。

Urban high-altitude lookout system is an important part of the construction of "safe city", which is of great significance for urban fire monitoring, urban key target monitoring, urban security monitoring, forest fire monitoring, airport perimeter security monitoring, air defense security monitoring, border defense monitoring, urban environmental protection monitoring, etc., and is widely used。

3.Vehicle mobile monitoring system

With the introduction of 3G wireless networks, wireless video surveillance has brought more space for development。Completely changed the isolation of the traditional vehicle monitoring system。

Wireless 3G vehicle video surveillance system in general to achieve video data encoding and decoding, encryption and decryption, interaction, send/receive and remote control and other functions。Take advantage of the carrier's wireless 3G network and Internet network, so that you can quickly connect with the system no matter when and where, convenient remote monitoring and management。

4.Transmission and display

Each monitoring point will collect the video through the optical fiber and Ethernet switch real-time transmission to the monitoring center and the monitoring center, the monitoring center and the monitoring center of the communication computer in the local area network for all kinds of information display, processing, output and storage, and to achieve information and data sharing or sub-authority management。

The front-end monitoring subsystem all adopts network transmission, that is, the use of ADSL, CDMA, microwave, 3G, optical fiber, residential broadband and other networks to transfer the front-end video, audio and alarm information to the first-level monitoring center。

Monitoring centers at all levels (police stations, sub-bureaus, municipal bureaus) can uniformly deploy video servers, control and management servers, monitoring terminals, media forwarding servers, etc., according to specific conditions。Among them, the video server completes the centralized recording of the monitoring center at all levels, and the control management server is responsible for the management, sharing and control of equipment, systems, users, alarms, etc。

The TV wall can be set in each central part, completely using a highly stable computer as a signal carrier, completely avoiding the process of analog-to-digital secondary conversion, to ensure the maximum picture quality and system load, display equipment can be plasma, LCD, VGA TV, professional display and other flexible display。

When a police situation occurs in each front end, the police information can be transmitted not only to the police station monitoring center, but also to the Municipal Bureau monitoring center。After the alarm is triggered, the linkage map and crosstalk light alarm can be issued after the video alarm。

5.Multi-level networking centralized monitoring and management

First-level monitoring center - Police station: As a first-level monitoring center, each police station can carry out real-time browsing, information storage, remote control, alarm processing, etc. of the video and audio information under it。

Secondary monitoring center - Public security Sub-bureau: the public security Sub-bureau is responsible for the monitoring images of all police stations under the sub-bureau, which can carry out full real-time monitoring browsing and remote control of the images, and forward the video and audio information to the third-level monitoring center while monitoring。Video images can be displayed on the TV wall through the network video matrix。

Three-level monitoring center - Municipal Public Security Bureau: The Municipal Public Security Bureau is responsible for unified management and scheduling of video in all municipal branches within its jurisdiction。It can configure and manage the whole process and all aspects of the system, including network video access and storage, user access control management, video scheduling management,。Unified deployment reduces network usage。

4. Typical cases

 ■ Shandong Qingdao public security dynamic monitoring project

 ■ Jiangsu Suzhou City, Wujiang City public security dynamic monitoring project

 ■ Shandong Linyi Luozhuang District, Cangshan County, Yinan County public security dynamic monitoring project

 ■ Shandong Liaocheng Chiping County, Donga County public security dynamic monitoring project

 ■ Shandong Weifang Zhucheng public security dynamic monitoring project

 ■ Anhui Huaibei monitoring project

 ■ Hebei Handan, Chengde city monitoring project

 ■ Nanyang City, Henan Province (agricultural Games) public security dynamic monitoring project

 ■ Shandong Yantai City, Tai 'an City vehicle mobile monitoring project 

 ■ Beijing Fengtai District vehicle mobile monitoring system