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Video security technology: Wide application of decoding matrix
Speaking of the network digital matrix, we do not understand, the network digital matrix is ​​hxxun based on the actual needs of the third generation of open network video surveillance system to develop a new digital matrix system, designed for LCD TV wall system. It can realize all the switching functions of the traditional analog matrix, and can also realize the recording function of the NVR.
The VGA digital matrix can be connected to any front-end camera channel in the system. The video channel information (such as network information, camera position, etc.) connected to the system can be obtained in real time. At the same time, the digital matrix that can be recorded can be selected according to the needs. You can use the mouse or the main control keyboard to operate in the matrix. You can also use the main control terminal or the management center for remote operation. The digital matrix decoding channel can realize automatic, manual switching, round robin or group (group) switching; Or multi-screen display effect, support alarm automatic zoom display.
The matrix application environment is very wide: centralized monitoring and management of large and medium-sized factories, centralized monitoring and management of large and medium-sized schools, urban monitoring, centralized monitoring and management systems for large and medium-sized retail chains, construction sites, electricity, stations, banks, communities, warehouses, and centralized government monitoring. And management.
Let me briefly introduce the application of decoding matrix in various industries and fields. First, let me talk about the application of matrix in construction engineering, and see how it can bring management effects to our projects; then we will matrix How does this technology work in the city management grid and what contribution we make to creating a safe city.
Construction site network monitoring application program
Application characteristics: (see above)
Through the networked video monitoring of hundreds of construction sites, the real-time management functions of the construction committee, the environmental protection bureau, the safety supervision bureau and other supervisory units can be realized. There is no need for a large number of inspection personnel to check the production of illegal construction, dump trucks, tower crane safety, etc. process. It can also protect the personal safety and property of the construction site well. Through the matrix switching function of group, synchronization, program and alarm linkage of the digital matrix, the key monitoring of fixed-point timing can be realized.
The site system has both ADSL 512K upload and 2-4M dedicated line upload, and different bandwidths have good solutions. Using ultra-low stream compression algorithm, the front-end 1.3 million / 2 million / 3 million source code stream full real-time video, the back end uses 256Kbps sub-stream preview and video. At the ADSL site, you can view the two sub-streams in real time, or you can download 1.3 million/2 million/3 million HD videos to confirm when there is a situation at a certain point in time.
Because the power supply environment on the tower crane is bad, and the line of sight is relatively wide, it is a relatively important position in the construction site monitoring. A low-power backup power supply can be used to mitigate the impact of the power supply. It is also recommended to use a high-definition dome camera with an imported HD lens of 30 times or more to transmit the video back to the monitoring center of the construction site through the wireless bridge for the construction site. The front-end adopts high-definition monitoring professional switch, which can remotely query the connection status of each site in the center. At the same time, if the network cable is pulled, the administrator can be passed through the mail.
The touch platform is used to control the video wall + multiple map clients for preview image and supervision, and the combination of GIS map and plane map is adopted. Mark the location of each site on the GIS map, and read the attendance records by face recognition or fingerprint identification, and record the work-time statistics of the personnel at each site, and conduct special management on the inspections of the supervisors and other personnel, and the working status of each device. To make a summary display, call the integrated project information system to display other relevant information about the current site. Double-click the icon of the site to enter the current site's flat map for image preview, intercom and other operations, very intuitive operation of the entire system.
Each sub-center strives to have at least 1-2 windows on each ADSL site to switch on the TV wall, and each 2-4M line site displays all the videos on a certain screen of the TV wall. The total center has 1-2 roads on the TV wall for each site, and the single system realizes the simultaneous display capability of 32 screens*16 channels and about 512 channels. This will not only cover all the construction sites, but also clearly distinguish and identify each site. If you find any problem with a certain window of a screen, you can find the site in time and promptly broadcast the webcast or intercom, or notify the general center to pay attention to it.
In order to strengthen the supervision of the supervision units, the inspection personnel will be arranged to check the construction sites from time to time. The system also made a special feature in mobile law enforcement. When the law enforcement officer installed the APP on the mobile phone, the trajectory of the inspection can be displayed in real time in the monitoring center and can be archived. This will not only make the inspection work well-documented, but also ensure the safety of the inspection personnel. In units with very high confidentiality requirements, the fingerprint patrol system can also be used to avoid patrols, and trajectories can be added according to the needs of the project. The system can also integrate the personnel positioning system on the construction site according to the project requirements.
Urban grid management overall application
Application characteristics
Cross-border integration, innovative governance: You can directly access the video of a safe city, a socially safe city, or authorized shops or units through a network TV terminal or a mobile TV mobile client, or you can directly receive an alarm signal or remotely arm With disarming. The video of the surveillance industry is directly transmitted by the broadcast television system to each user after the system is transcoded, which is equivalent to the live broadcast.
Comprehensive coverage, key monitoring: (pictured above) Each sub-center strives for at least 1-2 windows of each ADSL enterprise to switch on the TV wall, and each enterprise of 2-4M line is as far as possible Display all the videos on a certain screen of the TV wall. The central office has 1-2 channels on the TV wall for each enterprise and unit. The single system realizes the simultaneous display capability of 32 screens*16 channels and more than 512 channels. . It covers all enterprises and institutions comprehensively, and can clearly distinguish and identify various enterprises and institutions.
Multi-channel transmission, saving bandwidth: all enterprises and institutions have both ADSL 512K upload and 2-4M dedicated line upload, and different bandwidths have good solutions. Using ultra-low stream compression algorithm, the front-end 1.3 million / 2 million / 3 million source code stream full real-time video, the back end uses 256Kbps sub-stream preview and video. In ADSL enterprises and institutions, you can view two sub-streams in real time, or you can download 1.3 million/2 million/3 million videos to confirm when there is a certain time.
Remote networking, saving police power: Realizing the public security city of the Public Security Bureau, the grid management office, or the local third-party security company and other regulatory agencies, through network video surveillance and other technical defense measures to achieve enterprises, towns and towns within the jurisdiction The key time segments of key links in rural areas, public transportation, and school buses are monitored and managed in real time, without the need for a large number of inspection personnel to check. For example, if a child is lost in a city or a community, we can look it up in the window, and can also broadcast a notice or intercom through the network in time, or notify the general center to conduct key investigations.
The touch platform is used to control the video wall + multiple map clients for preview image and supervision, and the combination of GIS map and plane map is adopted. Mark the GPS location of each enterprise and institution on the GIS map, and make a summary display of the entry and exit of the employees of various enterprises and institutions or the working status of the equipment. You can also display the Sanzhi system and other related enterprises through customized development. Other data of the business unit, double-click the icon of the enterprise and the enterprise to enter the current map of the enterprise or institution for image preview, or intercom and other operations.
Trajectory tracking, security inspection: In order to strengthen the supervision of the supervision unit, the law enforcement officers installed the APP on the mobile phone, and the trajectory of the inspection can be displayed in real time in the monitoring center and can be archived. In units with very high confidentiality requirements, the fingerprint patrol system can also be used to avoid patrols, and trajectories can be added according to the needs of the project.
With the continuous development of science, the development of network digital matrix is ​​changing with each passing day. It is mature in the high-definition era in terms of application, performance, function, stability and operation convenience. Of course, there are also disadvantages: the real-time performance of audio and video transmission cannot be Compared to the analog matrix, it depends on the remote host encoding speed and the transmission efficiency of the network module. The effect of the transmission depends on the encoding module and the network transmission module. In short, the application of the matrix is ​​ubiquitous, but we don't have a systematic and professional understanding of this technology. Through a brief introduction, we can make everyone have a whole understanding. Don't think that the matrix is ​​very advanced. The application of this technology is actually all over the place. Around our lives and work, as long as we use it flexibly, we can bring great help to our lives and work.