Spliced Screen Scheme of Xueliang Project

From the three-level networking architecture of counties and villages, the space and power supply restrictions of village-level monitoring rooms, the deployment location of AI computing power, the design of the sharing authority of the whole network, to the three-level screen number backstepping and grid linkage, the landing judgment of the sharp project splicing screen is given.

The most expensive mistake of the discerning project splicing screen scheme is not that the screen is expensive to buy, but that "the county-level LCD splicing screen scheme is directly reduced by one and sent to the village".The policy feature of the Xueliang Project is to take the county, township, and village three-level comprehensive management center as the command platform, and the video surveillance network application as the core. There are halls, dedicated lines and operation and maintenance teams at the county level. The village level may only have a monitoring room of several square meters, a 100Mbps village platform link and a part-time grid worker. The three-level division of labor is different, the space conditions are different, the network bandwidth is different, and the operator's ability is different. The screen wall configuration and networking architecture must be designed according to the level, and a set of templates cannot be set to the end. More importantly, the core of the discerning project is not "looking","Three-level network access, one-key alarm, linkage grid disposal": The county level can access township and village-level videos, and village-level alarms can be pushed to the three-level platform at the same time. The location of grid members and alarm points are associated on GIS. This article is carried out in the order of "three-level division of labor → networking architecture → screen number backstepping → village-level restriction → AI deployment → sharing authority → grid linkage → drill acceptance". Each link gives the judgment of "under what conditions to establish and under what conditions to exclude" and explainsQunmao Display Technology as a Source Manufacturer of LCD Spliced Screen in ChinaActual value in patchwork combinations, non-standard supports and long-term spare parts.

1. county and village level 3 is not "three sets of screens, large, medium and small", but three kinds of division of labor.

The three-level structure of Xueliang Project has different core tasks and different uses of screen walls. It is the most common misjudgment in scheme design to match the three levels as "decreasing screen number.

2. three-level networking architecture: GB/T 28181 is the bottom line, bandwidth is a hard constraint

The three-level networking of Xueliang Project is not as simple as "transmitting all videos to the county. The cascade protocol between platforms, the bandwidth configuration at all levels, and the storage location of the video determine whether the screen wall can really be adjusted and seen clearly.

3., the number of three-level screens is pushed back: according to "what should each level see at the same time", not according to "large, medium and small"

The number of screens at each level should be pushed back by the "number of readable windows that need to be displayed at the same time" at that level, rather than by the intuition of "large county level, small township level and small village level.

county comprehensive management center

The county level needs to display at the same time: multi-channel video round-robin (usually covering key points in each township), GIS map (global grid and alarm location), alarm disposal window and consultation screen. Taking a 55-inch single screen (about 1222mm × 696mm) as an example, assuming that the available wall surface is 6 meters wide and 3 meters high, after deducting the maintenance space, the available wall surface is about 5.4 meters wide and 2.3 meters high, with a total of 12 candidates in 4 columns × 3 rows. If the GIS main research area spans 2 × 2, the video area occupies 4 screens and is divided into 9 segments (36 channels are visible at the same time), alarm disposal and consultation each occupy 2 screens, and 12 screens are a reasonable starting point. If there are a large number of villages and towns and more than 36 key points need to be monitored at the same time, the number of screens needs to be increased or the density of single-screen segmentation (but the denser the segmentation, the worse the readability of single-screen segmentation).

township sub-control center

There are usually only 1-2 operators in villages and towns, and the core task is "the key videos in the jurisdiction often show alarm pop-up and consult with the county level". A total of 4 screens of 55 inches 2 × 2 are common starting points: 2 screens are divided into 4 or 9 to display key points in the jurisdiction, 1 screen to display GIS and alarm list, and 1 screen to discuss. If the township area is large and there are many key points, a total of 9 pieces of 3 × 3 can be established. However, if there is only one operator, too many screens will increase the operational burden.

Village (community) monitoring room

The space of village-level monitoring rooms is usually limited (perhaps only a few square meters), and the power supply and network conditions are not as good as those at the county and township levels. Single screen or 2 x 2 is the pragmatic choice. If the village level is only responsible for "looking at the main entrances and exits of the village and receiving one-button alarm", a 55-inch single screen can be covered with round rounds. If you need to look at 4 key areas at the same time, a total of 4 screens of 2 × 2 can be set up. The operation logic of the village-level screen wall must be very simple: the regular display screen is fixed, the alarm pops up automatically, and there is no need to switch complicated plans.

Where to put the 4. AI calculation force: the AI deployment of Xueliang project is different from that of ordinary monitoring.

The AI analysis of Xueliang Project (face, vehicle, behavior analysis) is usually not equipped with a set of computing power for every village. Reasonable deployment logic is:Front-end cameras do basic intelligence (such as cross-border detection and motion detection), county-level platforms centrally deploy AI analysis algorithms, and village-level platforms are only responsible for video collection and alarm reception.

The screen wall scheme does not need to bear the AI algorithm itself, but needs to confirm: the push format of the AI alarm (whether it includes the location, screen, and level), the push target (which level of screen wall), and the push priority (whether it covers the current round trip)."AI recognized" and "screen wall popped up" are two things.In the middle, there is a complete link of platform push, decoding wall and window layout.

Permission Design for 5. Network Sharing: Who Can Watch Which Level of Video

The policy goal of Xueliang Project is "full network sharing", but sharing is not "everyone can watch all videos". Sharing involves comprehensive management, public security, emergency, township, village and other subjects, and the classification of authority is more complicated than that of ordinary monitoring centers.

Permission design should be written into the protocol document, not a verbal agreement. Actual measurement during acceptance: whether the scope of different roles can be seen and operated after logging in conforms to the matrix; Whether authorization is required for cross-level review; Whether the operation log completely records "who read which video and which window at what time".

6. grid management and screen wall linkage: the business characteristics of the discerning project different from ordinary monitoring.

The snow project is deeply combined with grid management. After the alarm occurs, the screen wall should not only display the video, but also display on GIS: which grid the alarm point belongs to, who the grid member is, the current position of the grid member, and what disposal resources are around. This linkage determines the "scheduling value" of the screen wall rather than just "viewing value".

7. budget trade-offs and source manufacturer value

The budget of the three-level project of Xueliang Engineering is usually scattered in multiple levels, and the order of choice is recommended:First, ensure smooth access to the three-level network (county level can transfer villages and towns, villages and towns can transfer village level, and village level can receive alarms), then ensure the readability of screen walls at all levels (village level can at least see the main entrances and exits clearly), then ensure alarm linkage and grid display, finally ensure splicing and upgrade of panel level. Village level should not upgrade patchwork for "the same as county level", and county level should not sacrifice GIS readability for "provincial budget.

8. drill acceptance: run through the complete process of "village-level alarm → township verification → county-level dispatch"

The acceptance of the discerning project cannot be measured only by "the county-level large screen can be bright and the village-level can be seen". Should be designed onceThree-level linkage exercise, run the complete process of "village-level alarm → township pop-up verification → county-level review and dispatch → grid member response → recovery.

9. common mistakes

• Misunderstanding 1: Take Level 3 as "Large, medium and small three sets of screens". The county level is the dispatching layer, the township is the verification layer, and the village level is the touch layer. The purpose of the screen wall is different, the configuration logic is different, and it cannot be matched only by decreasing the number of screens.
• Misunderstanding 2: copy the county-level program at the village level. The village space is small, the power supply is unstable, the operator is part-time, and the network has only one village link. The focus of the village-level plan is "fit, stable and understandable", not patchwork and resolution.
• Myth 3: Think that "platform cascade success = screen wall can be adjusted". Cascading success only means that the platform can exchange signaling. Screen wall access also depends on decoder compatibility, access rights, and cross-level routing. The plan should confirm "who has the right to transfer whom" step by step ".
• Myth 4: Every village has a set of AI calculation power. The AI of Xueliang Project is usually concentrated on the county-level platform, and the village level is only responsible for collection and alarm reception. The screen wall does not need to bear the AI algorithm, but needs to confirm the alarm push format and priority.
• Myth 5: Think of "full network sharing" as "everyone can watch all videos". Sharing requires permission grading. Comprehensive management, public security, township, village-level access to different scope, log and audit requirements are different.
• Myth 6: Think "big screen can dispatch grid members". Grid linkage is the function of the comprehensive management platform, and the large screen is responsible for presentation. Boundaries should be written clearly to avoid over-commitment by integrators.

10. FAQ

XI. Conclusion