General Outline of Monitoring Splicing Screen Scheme: How to Choose Public Security, Park, Transportation and Emergency Command Center

Security monitoring is the basic disk with the largest number of LCD splicing screens, but "monitoring splicing screens" are not standardized products-the four types of scenes of public security, park, transportation and emergency have great differences in the number of signal paths, viewing distance, operation duration, integration and reliability requirements: the park scheme will waste budget by copying the public security configuration, the traffic scene will ignore the difficulty in expanding the later stage of platform docking, and the integration of emergency scene neglect and video conference will be overturned. This article only talks about one thing: how to choose the four types of monitoring scenarios, give configuration conclusions, quick look-up tables and calculation rules, and the details (decoder/processor selection, project acceptance) are undertaken by each topic.

Comparison of Core Differences of 1. Four Monitoring Scenarios

2. Scene 1: Public Security Command Center

2.1 Scene Features

The public security command center is a command and dispatch place for handling public emergencies and major events. Its characteristics are:

• Longitudinal multi-stage: province-city-district/county-police station multi-level system, the superior can call the subordinate resources (GB/T28181 national standard cascade).
• signal complex: Multi-source access of monitoring video, service platform data, video conference, GIS map and bayonet data.
• high reliability: 7 × 24 uninterrupted, the fault recovery time is very short.
• multi-seat scheduling: Multiple operator seats need to be independently adjusted to different signals on the wall.

2.2 Configuration Conclusion

2.3 Key Technical Requirements

• Support fiber or network to achieve national standard cascade, upper and lower resource call and cross-matrix device control, fiber cascade to achieve real-time lossless transmission of video signals.
• Supports splicing multiple screens into a single logical screen, scene saving and one-click calling, and no flower screen, no blue screen, and no obvious black field during switching.
• Access channels must be reserved for service platform signals (GIS, bayonet, and police integration platform), and monitoring signals cannot be planned only.
• The classified area is isolated from the Internet according to the specifications, and the private network operates independently.

Portrait of typical projects (desensitized): A municipal public security command center adopts 4 × 6 layout, 0.88mm stitching and distributed processor dual-machine decoder cascade to realize city-district platform intermodulation and daily 7 × 24 operation. The specific configuration is subject to the project survey and bidding requirements.

3. Scenario 2: Park Monitoring Center

3.1 Scene Features

Park scene coverage (industrial park, logistics park, campus, hospital, commercial complex), the core features areConfigure on demand, budget sensitive：

• The number of signal routes is medium: 100 routes, and large parks can reach thousands of routes.
• Viewing distance is close: generally 3-5 meters, there are certain requirements for patchwork.
• Incremental integration: from pure monitoring to security production energy and other multi-system integration evolution.
• 7 x 24 operation, but the budget is usually tighter than public security, traffic.

3.2 Configuration Suggestions for Different Scale Parks

3.3 Key Technical Requirements

• Docking the mainstream security platform (Haikang, Dahua, Yushi, etc.), support GB/T28181, to achieve the platform organization structure directly on the wall.
• Monitoring screen end-to-end delay to meet the real-time requirements, 7 × 24 continuous operation.
• Large campuses recommend a distributed architecture: no server is decentralized, and a single node failure does not affect the system.

Typical project portrait (desensitized): a large logistics park has about 800 channels of monitoring, with 3 × 4 layout, 1.8mm splicing and 32 channels of decoder cascading of distributed processors, covering multiple sets of data on the wall of security, fire fighting, metering and energy. The specific configuration shall be subject to the project survey.

4. scene three: traffic command center

4.1 Scene Features

The traffic command center should be connected to the city's traffic camera video stream, real-time decoding, unified scheduling, and support the docking with TOCC (traffic integrated operation coordination and emergency command center) and other platforms. Characteristics are:

• Multiple signal sourceTraffic surveillance video, signal control data, GPS positioning, AR live, video conferencing.
• Longitudinal butt joint: It needs to communicate with the district/county sub-centers and the superior transportation department platform.
• Independent window of key road sections: Key intersections and congested road sections shall be provided with separate windows for high-definition real-time display.
• information release linkage: The traffic information is released to the road guidance screen simultaneously.
• Strong data visualization: Flow, congestion index, accident statistics, etc. need to be visualized.

4.2 Configuration Conclusion

4.3 Key Technical Requirements

• Multi-screen display at the same time, free switching, zooming, round-robin; high-definition display of separate windows for key road sections.
• Interfacing with AR system: traffic data, labels and labels are superimposed on real-life video.
• Linkage with signal control system: large screen can be adjusted to see the signal lamp status and timing scheme.
• Emergency plan one-click call: traffic accident, bad weather and other scenarios plan switch.
• Intercommunication with district and county sub-centers and superior platforms through standard protocols (platform docking, non-national standard cascade connection).

5. Scenario 4: Emergency Command Center

5.1 Scene Features

The emergency command center covers fire, flood control, meteorology, earthquake, production safety and other scenarios, the core features arecombination of peace and war, integration of systems：

• combination of peace and war"peacetime" daily on-duty monitoring and early warning, "wartime" emergency dispatch, multi-party consultation and decision-making.
• Deep integration with video conferencing: The core of emergency command is multi-department consultation and remote dispatch.
• multi-sector linkage: At the same time access to fire, medical, transportation, meteorological and other departments of the signal.
• stock fusion: Most of them are upgrading projects, which need to be compatible with the established software and hardware and cannot be interrupted.
• Security isolation: Independent private network of classified information, physically isolated from the Internet.

5.2 Configuration Conclusion

Partition Display Design of 5.3 Emergency Scene

The large screen of the emergency command center is usually divided into functional areas, and the common areas include:

• Traffic Management Function Area
• Multi-mode traffic monitoring function area (road, rail, air, etc.)
• Safety protection function area
• Passenger flow/passenger flow monitoring function area
• GIS Map Function Area
• Emergency Command and Dispatching Function Area
• Video consultation function area

6. Four Scene Selection Quick Look-up Table

6.1 selection according to budget grade

6.2 Selection by Number of Decoder

6.3 selection by signal source type

Calculation rules for 7. monitoring walls

The quick look-up table gives the conclusion. The calculation method given in this chapter is checked with two sets of formulas before the scheme design (there are formulas for bandwidth and processor paths in the second "System Architecture", and the number of focusing screens and decoding paths in this article):

Common Misunderstandings in 8. Monitoring Scene Selection

1. The smaller the patchwork, the better?The monitoring scene has a viewing distance of more than 3 meters, 3.5mm is completely enough, and chasing 0.88mm is a waste of budget.
2. The decoder is matched according to the total number of cameras?According to the position of the wall at the same time, most projects can be downgraded by one gear.
3. Park copy public security configuration?The number of roads, distance, budget differences, excessive allocation of free money.
4. Ignoring vertical docking requirements?Public security to national standard cascade, traffic emergency to platform docking, architecture design reserved interface, later supplement is very expensive.
5. Emergency ignore video conference fusion?The core of emergency command is multi-party consultation, and the splicing screen must be connected with video conference.
6. Does it only count as screen body or not as accessories?The budget shall include the installation and commissioning of the screen decoder matrix processor cabinet/bracket wire.
7. Ignore 7 × 24?The monitoring screen must support 7 × 24 continuous operation, and ordinary commercial screens are not applicable.

9. FAQ

1. How big is the splicing screen of the public security command center?The viewing distance is close, 1.8mm is recommended, and the budget is sufficient to 0.88mm. The core is multi-level cascade and reliability, not just patchwork.
2. Is 3.5mm enough for the park?More than 3 meters viewing distance is enough, small and medium-sized park 3.5mm is the best cost-effective solution.
3. How many screens does the traffic command center need?According to the "number of pictures on the wall at the same time ÷ single screen division" calculation and re-consolidation layout, common 3 × 4 to 4 × 6.
4. How does the emergency command center integrate with video conferencing?The video conference terminal signal is on the screen through the processor, and the distributed processor opens the link between the main display large screen and the conference room large screen.
5. What is the difference between a decoder and a processor? Which one is used to monitor the wall?The decoder is responsible for monitoring the signal decoding on the wall, and the processor is responsible for splicing and windowing. Large systems need both.
6. What is the difference between GB28181 and ONVIF?GB/T28181 is the national standard networking protocol (domestic platform docking),ONVIF is the international open standard (equipment interoperability).
7. How to ensure the stability of 7 × 24 monitoring splicing screen?Select industrial-grade panels and decoders to adopt embedded architecture, reserve spare parts, and conduct 168-hour continuous operation tests after acceptance.
8. 100 road monitoring need how many pieces of splicing screen?According to the number of ways to go up the wall at the same time and the division of a single screen, the key 32 ways are often displayed, 16 ways are divided → 2 pieces are enough; All can be used on the wall for 9 pieces.
9. How much is the budget for monitoring splicing screen?According to the six items of "screen + decoder + matrix + processor + structure + installation", the reference ratio is 50%-60% of the screen, and the specific quotation shall prevail.
10. How to realize the multi-level cascade of public security?According to GB/T28181 system, the decoder/platform supports superior resource call, fiber or network cascade, and reserved docking interface.
11. Does the campus monitoring center need a processor?The decoder matrix in small and medium-sized parks is sufficient; when cross-screen windowing and multi-system fusion are required, the processor is reconfigured.
12. How to isolate classified information in emergency command center?The classified private network is physically isolated from the Internet, the signal is accessed independently, and the unified platform is dispatched according to the authority.

10. summary: choose the most matching, not the most expensive

Four types of scenario selection core logic:Public security emphasis on national standard cascade and high reliability, the park emphasis on cost-effective and on-demand configuration, traffic emphasis on multi-signal fusion and data visualization, emergency emphasis on the combination of peace and war and system integration.. Before the scheme design, the number of screens and decoding paths are calculated by the formula in chapter 7, then the configuration is determined according to the quick look-up table in chapter 6, and finally the vertical docking and signal type are confirmed according to the scene characteristics.