Campus Security Monitoring Splice Screen Scheme_Splice Screen_Product News_News Center

From the signal list, screen number backstepping and decoding conversion of the three on-duty modes, to the alarm linkage mechanism, school type difference, budget trade-off and on-site survey list, the landing judgment of the splicing screen of the campus security monitoring center is given.

The most expensive mistake of the campus security monitoring splicing screen scheme is not that the screen is expensive to buy, but that "the door cannot be seen during peak hours, the screen on duty at night is too bright, and the alarm triggers the large screen and does not respond".The use of the campus monitoring room has an obvious time rhythm: the peak of going to and from school should be "seen at a glance at the school gate", the daily duty should be patrolled to cover key parts, and the perimeters and entrances and exits should be watched during the night holidays. The three modes have completely different requirements for screen number, stitching, brightness and linkage. If all schools are set with a "standard configuration", problems will inevitably occur at a certain time. More importantly, the core value of the campus monitoring wall is not "display", but alarm linkage-after a one-button alarm is triggered, whether the associated picture can pop up, enlarge and mark the video on the large screen in time determines whether the monitoring wall is "really useful". This article is carried out in the order of "on-duty mode → signal list → screen number derivation → decoding conversion → alarm linkage → school type difference → budget trade-off → on-site investigation → acceptance". Each link gives a hard judgment of "under what conditions it is established and under what conditions it is excluded" and explainsLCD splicing screen China source factoryThe actual value of direct supply in customized stitching, size, bracket and long-term spare parts.

1. first dismantle three duty modes: the campus monitoring wall does not "always display the same content"

The use time rhythm of the campus monitoring room determines the specification priority of the splicing screen. The first step in the scheme design is to separate the "display tasks" of the three modes.

Display task and specification priority of three on-duty modes
On-duty mode	Core Display Content	Specification Priority	Under what conditions are established/excluded
peak of going to and from school	Fixed displays at school gates, pick-up and drop-off areas, and surrounding roads; perimeter and access assistance	Fixed window readability> number of screens (door screen should be large)> patchwork (door screen is sensitive when crossing screens)> brightness	The distance from the nearest duty seat to the screen is more than or equal to 1.5 meters; The picture at the door occupies at least 2-4 windows and cannot be stuffed in the 9-divided small grid.
Daily Duty	The corridor of the teaching building, the entrance and exit of the dormitory, the canteen and the playground are patrolled in groups. Keep the alarm linkage	Round trip efficiency> number of decoding paths> patchwork (low dynamic picture sensitivity)> brightness	3.5mm patchwork seam can be established in dynamic round-robin; round-robin does not increase the upper limit of simultaneous decoding, and decoding is configured according to the constant display position.
Nights and Holidays	Fixed display of perimeter and main entrances and exits; linkage of intrusion alarm	Low Light Performance> Brightness Adjustment Range> Whole Wall Consistency> Patchwork	It is necessary to verify the low bright gray scale and color cast under night working conditions, and cannot be clapped according to the effect between daytime samples.

How to deal with the specification conflicts of the three modes.: The peak should be "big picture at the door", the daily should be "multi-window round-robin" and the night should be "low bright and comfortable". If you must share a wall, press"Peak Window Number Daily Round Patrol Zone Full Screen Low Light at Night"The three layout drafts are drawn separately, and the scheme with the highest number of windows and splicing requirements is taken as the basic configuration of the screen wall. Low brightness at night is satisfied by the brightness adjustment range of the screen body, not by changing the screen. If the proportion of display tasks is high and the visiting moving line passes through the screen wall, the flat-splash joint shall be planned at least 1.8mm; A pure on-duty scene of 3.5mm can be established.

2. campus signal list: not all signals go "video decoding"

The signal source of campus monitoring is more complicated than "surveillance camera. One-button alarm, visitor system and bright kitchen stove are all plugged into the decoder as video streams, which will lead to a large number of decoding paths, no service interface and no alarm linkage.

On-wall Link and Resource Occupation of Campus Security Monitoring Signal
Signal type	Typical sources	Wall Link	Whether to occupy video decoding resources
Campus surveillance video	School gate, perimeter, corridor, canteen, dormitory, playground camera	Security platform/NVR streaming → decoder → splicing processor → large screen	Yes. The number of decoding paths is converted according to "screen number × constant display division number"
One key alarm event	Alarm button of guard room, dormitory duty room and security monitoring room	Alarm platform trigger → call associated camera picture → decode wall pop-up	The alarm signal itself is not video; the pop-up screen occupies decoding resources
Visitor/Access Control Screen	Visitor system, access control client	Client screen → acquisition workstation/encoder → on-screen	Video decoding is usually not used, but the performance and resolution of the collection side need to be verified.
Bright kitchen/canteen	Canteen operation room camera, supervision platform	Platform fetching stream decoding, or monitoring platform application screen acquisition screen	Depends on the access method; independent regulatory platforms usually follow the acquisition link
Electronic inspection/alarm host	Electronic inspection system, alarm host	Event signals enter the security platform, linked by the platform video on the wall	Events do not occupy decoding; linked pop-up videos occupy decoding

"Large screen display in school" and "docking of public security platform" are two things

The campus video and alarm system is networked with the public security organs, which belongs to the platform side docking and takes the authorization interface, and is implemented by the school and the local public security according to the local mechanism. The splicing screen display system is responsibleintramural presentation-- After the alarm is triggered, the screen pops up, enlarges, marks and videos, and does not assume the function of "networking channel. In the plan, these two matters should be listed as two areas of responsibility, and the "public security networking docking" should not be included in the display system in the quotation, so as to prevent the integrator from being unable to perform the contract at the time of acceptance after a large package.

How to calculate the number of 3. screens: push back from the window draft, not "shoot" from the wall surface"

The number of screens in the campus monitoring room should be pushed back by "several readable door pictures are needed during peak hours and several windows are needed for daily rounds", instead of being directly determined by "how big the wall of the monitoring room is" or "how much budget is.

THREE STEP THRUST REVERSER

Number of constant display windows: How many doorway/pick-up area pictures need to be displayed in the peak mode? How many windows need to be visible at the same time for daily rounds? For example: the peak needs 4 doorway pictures (each occupies 1 grid of 2 × 2 divisions, or 1 grid of 4 divisions of a single screen); the peak needs 16 roads to be visible at the same time.
Number of converted screens: If the picture at the gate of the peak requires "large", only 1-2 channels will be placed on each screen. Daily rounds are converted according to 4-split or 9-split single screen. Take two modesThe one with larger screen demandAs a screen wall base configuration.
Check readability: Check with the distance of the nearest duty seat: whether the license plate, face and uniform color in the picture at the door can be recognized; Can the corridor personnel activities in the round-robin window be seen clearly. If the nearest distance is 1.5-2 meters and the stitching is visible at 3.5mm, the door picture should be inclined to 1.8mm across the screen. If the distance is more than 2.5 meters, 3.5mm is already difficult to detect in the dynamic picture.

Frequent Display Decoding Requirement ≈ Number of Screens × Number of Frequent Display Splits (Weighted)
The big picture at the gate of the peak is divided into 1-4/screen, and the daily round tour is divided into 4-9/screen. Round tour does not increase the upper limit of simultaneous decoding, and the decoder is configured according to the constant display, not according to the total number of round tour coverage.

With aPrimary and secondary schoolsTake a typical monitoring room as an example: the available wall surface is about 3.5 meters wide and 2 meters high, and the nearest distance of the duty seat is about 1.8 meters. The peak requires 4 door screens (each screen is divided by 2 points, a total of 2 screens) and 2 roads around the perimeter (1 screen is divided by 2 points); Daily rounds require 12-16 roads to be visible. It takes about 6-9 55-inch screens to make 2 × 3 or 3 × 3 for peak and daily large demand. If the nearest distance is only 1.2 meters and the picture at the door spans the screen, it is recommended that the seam should be at least 1.8mm; If the distance is more than 2 meters and the tour is mainly round, 3.5mm can be established.

How to fold the number of 4. decoding paths: distinguish between "total access" and "simultaneously readable"

The number of campus monitoring points will continue to increase with the standard construction, but the decoder does not need to be bought according to the "total number of cameras. Three calibers need to be distinguished:The total number of platform accesses, the number of simultaneous decoding on the wall, and the actual readability of each window.. The round tour is time-sharing switching and does not increase the upper limit of simultaneous display.

Reference for conversion of decoding path number (based on 1080P, subject to model specification)
Single-path resolution	Conversion factor	If the decoder is fully equipped with 64 channels 1080P, it can be solved simultaneously.	Description
1080P	1	64 way.	Campus monitoring mainstream resolution
4K/800W	about 4.	Approximately 16.	Some new projects are adopted, which shall be converted according to the actual proportion.
720P	Approximately 0.5.	About 128 road.	Common in legacy frontends; confirm whether it is still in use.

The typical capability of industry decoders is "64 channels 200W or 128 channels 720P decoding at the same time", or "16 channels 800W or 32 channels 400W". The plan should require the supplier to specify: under the combination of the actual coding format (H.265/H.264) and resolution of the project, what is the number of simultaneous decoding channels; Whether the frame is reduced when fully matched; Whether the number of output interfaces covers the number of screens.The new campus project should reserve 20%-30% decoding margin according to the growth of monitoring points in the next 2-3 years.However, it does not need to be filled at one time according to the "total number that may eventually be reached.

5. Alarm Linkage: What to Do, Who to Implement and How to Accept Large Screen

Alarm linkage is the core function of campus monitoring wall different from ordinary monitoring wall. The national standard requires the guard room and other parts to set up a one-button alarm device and connect with the local public security network. On the display side, the core of the linkage is not "the alarm rings",The associated screen pops up, zooms in and catchy in time, and does not interfere with other on-duty tasks in progress.。

Three realisation levels of linkage

Implementation Level and Responsibility Division of Alarm Linkage
Level	by whom to achieve	What is verified on the large screen side	Under what conditions are established/excluded
Alarm trigger associated with video	Security platform/alarm host	Whether the alarm point-camera binding relationship has been configured on the platform	The binding relationship is incomplete, and the correct picture cannot be popped up on the large screen. This is a platform-side work, not a screen function.
Picture push and layout control	Splice Processor/Decoder	Whether the alarm event can trigger the specified window to pop up and zoom in; Whether the "alarm screen takes precedence over round-robin" can be set"	The processor needs to support the alarm linkage interface or platform docking; it cannot be achieved by the screen body alone.
Presentation and Recovery	Display System	Pop-up time, window position, duration, whether to automatically restore the original layout	The ejection is too slow, it is knocked off by rounds, and it cannot be recovered. All of them are not valid.

In the actual project, after the one-button alarm is triggered, the monitoring platform will pop up the video picture at the gate of the alarm school and display it in real time on the large monitoring screen, supporting up to 16 sub-screens to monitor at the same time. "Alarm linkage" should be clearly included in the scheme.Joint debugging scope of integrator and platform manufacturer, and in the acceptance test: simulation trigger alarm, check the pop-up time, picture correctness, video marking behavior, restore the original layout of the action. When the linkage fails, the troubleshooting sequence is "platform binding relationship → processor linkage configuration → cable/interface" instead of first suspecting the screen body.

Linkage acceptance must be "injected abnormal"

You can't just look at "can you play when triggered normally". It should be tested whether the screen with high priority pops up and the screen with low priority is queued instead of replacing each other when two alarms are issued at the same time. After the alarm pops up, whether the original round layout is correctly covered; After the disposal, whether the one-button recovery returns to the standard layout instead of the temporary adjustment of the previous class. These test items are written into the acceptance outline, which is much more meaningful than the five words "linkage function is normal.

6. school type difference: kindergarten, primary and secondary schools, colleges and universities are not the same set of configuration

The scale and configuration of campus security monitoring vary greatly with the type of school. Using the same set of "standard plans" to set all schools is the most common over-configuration or under-configuration in campus projects.

Differences in the monitoring configuration of the three types of schools (reference, actual adjustment according to the project)
School Type	Typical monitoring scale	Splice screen configuration tendency	Core focus points
Kindergarten	Dozens of roads, focusing on the door, activity room, canteen, perimeter	Small number of screens (4-9 pieces),49/55 inches, 3.5mm or 1.8mm patchwork	Clear picture at the door, simple operation, low brightness and comfort at night; operation and maintenance rely on suppliers.
Primary and secondary schools	100-way level, covering 16 key parts, including one-key alarm networking	6-12 pieces, 55 inches, patchwork seam according to the distance of 1.8/3.5mm, decoding according to the constant display configuration	Large picture at the gate of the peak, reliable alarm linkage and clear boundary with the public security platform
College/Vocational school	Hundreds to thousands of roads, multi-campus, multi-building	More than 12 pieces, 55/65 inches, 1.8/0.88mm, distributed or centralized according to expansion requirements	Multi-campus convergence, platform compatibility, expansion margin, operation and maintenance systematization

The operation and maintenance personnel of kindergartens and primary and secondary schools are usually security personnel rather than professional audio and video engineers, and the selection should be given priority.Simple operation logic, universal spare parts, intuitive maintenanceThe university project scale is large, the expansion demand is clear, the complexity of architecture selection and platform docking is higher, can refer to the capacity accounting and architecture trade-off method of public security/traffic police.

7. budget trade-offs and source plant value

The budget review of campus projects is strict, and the risk of "winning the bid at a low price and adding items at a later stage" is more sensitive than that of government projects. When the budget is limited, the recommended order of trade-offs is:First, the number of screens and the readability of the regular display window are guaranteed (the screen at the door cannot be seen clearly, and the monitoring wall loses the meaning of peak duty), then the reliable realization of alarm linkage is guaranteed (this is the core value of the campus wall), then the stitching is determined according to the nearest viewing distance (3.5mm can be established at a distance above 2.5 meters), and finally the extra margin of brightness and consistency is considered. Don't sacrifice the number of screens or linkage configuration for the sake of "0.1mm small patchwork"-the former is a plus for perception and the latter is the bottom line of safety.

Qunmao DisplayThe Actual Value of LCD Splice Screen China Source Factory in Campus Project

Qunmao Display LCD Splice Screen China Source FactoryThe value of direct supply is not just the unit price. The particularity of the campus project lies in: the space of the monitoring room is often irregular, and the bracket may need non-standard customization; Different types of schools have various requirements for the combination of stitching and size. The service life of the splicing wall is long, and the supply of spare parts after five years is more important than the price at the time of purchase. Taking Qtenboard as an example, its factory supports43-75 inch full size, 8mm to 0mm full patchwork gearpanel selection, and supportOem/odm/ckd/skdCooperation mode, can be customized according to the needs of the project patchwork, brightness, interface and packaging. For integrators and school project parties, this means thatThere is no need to "gather together" in the standard", but according to the actual window layout and viewing distance of the monitoring room to choose the seam and size;Spare parts supplyIt is also more controllable than traders-when the splicing wall needs to be replaced after a few years, the source factory can provide the same type of panel or module instead of "replacing the whole wall". During the evaluation, it is essential to verify the factory’s qualifications, the source of the panels, and actual case studies, rather than relying solely on the label “directly supplied by the factory.” Qtenboard's public information shows that it has its own manufacturing base. The panel has undergone 48-hour aging test and color calibration to support 24/7 continuous operation scenarios. These capabilities are more practical than peak parameters in the "long-running, limited budget, and weak operation and maintenance capabilities" project of the campus monitoring wall.

8. Site Investigation List and Core Items of Acceptance

The site conditions of the campus monitoring room directly determine whether the screen wall can be installed or not. The following checklist should be completed during the scenario phase, rather than waiting until the installation phase to discover the problem.

Site Investigation List of Campus Monitoring Room
Exploration Item	What needs to be confirmed	Impact on selection
Wall Size and Bearing	Available width and height, wall type, whether steel structure is required	Decide on the number of rows and installation methods; light partitions require floor cabinets or reinforcement
Duty Seat Sight Distance	Distance from the nearest/farthest shift desk to the screen wall	Determination of the lower limit of readability for the grade of patchwork and the number of splits
Ambient light	Window orientation, daytime illumination, night lighting	Determine brightness level and low brightness adjustment requirements
Maintenance space	Front maintenance or rear maintenance, whether there is disassembly space around	Determine bracket type (wall mount/front maintenance hydraulic/cabinet)
Power Supply and Network	Power capacity, socket location, network interface location	Decide on wiring and device layout; decoders and processors need stable power supply
Alarm linkage interface	Security platform brand, alarm host model, whether to open linkage interface	Decide on the implementation of linkage and the responsible party for joint coordination.

Core items of acceptance

Peak readability: With the real picture of the school gate, according to the peak layout, the duty station can identify the characteristics of personnel and vehicles.
Night low light: Light up the whole wall at night to check the low brightness gray scale, color cast and brightness uniformity, and do not replace the effect between the model plates during the day.
Alarm linkage: Simulate triggering, measure pop-up time, picture correctness, video marking, restore layout, and test the priority of two concurrent channels.
Round-robin and recovery: There is no black field or obvious pause in the round-robin switch; Whether the one-key recovery of succession returns to the standard layout.
Continuous operation: Operate at full load for a specified period of time (e. g. 72 hours) without failure or performance degradation.

9. common mistakes

Myth 1: Buy decoders directly with "monitoring the number of roads. Hundreds of road monitoring on campus does not mean that hundreds of road decoding is required. Decoding is calculated as “number of screens × number of constant-display segments”; round-robin scheduling does not increase the simultaneous display limit. For new projects, a 20%–30% margin is sufficient.
Misunderstanding 2: Take one-key alarm linkage as "screen body's own function". Linkage depends on the alarm binding of the security platform and the linkage interface of the processor/decoder. The screen is only responsible for presentation. The scope of the joint adjustment should be clearly defined in the plan, and the public security network should not be included in the display system in the quotation.
Misunderstanding 3: low light at night "just look at it during the day". The campus monitoring wall is lit all night, and the gray scale and color cast under low light must be measured at night. The effect of the model room during the day cannot replace the night acceptance.
Myth 4: All schools have the same configuration. The selection logic of 4-9 screens in kindergartens and dozens of screens in colleges and universities is completely different. The number of screens, patchwork and structure should be deduced according to the school type and window requirements respectively.
Myth 5: Only look at the unit price of the screen body, not the spare parts and linkage. Campus project budget is tight, but the low-cost screen late "decoder is not enough, software purchased separately, linkage no one to adjust" additional items, the total cost is higher. The sub-quotation shall include decoder output interface, linkage coordination and spare parts.
Myth 6: Think the "source factory" is just cheap. The value of the source factory is in non-standard bracket customization, patchwork size combination and long-term spare parts supply. The assessment verifies factory qualifications and panel sources, rather than just looking at publicity.

10. FAQ

Campus monitoring wall general several screen?

There is no standard answer. First, draw the layout draft according to "several readable windows are needed for the picture at the peak gate and several windows are needed for daily rounds", take the larger screen number requirement of the two modes, and then check the readability with the distance from the nearest duty seat. Kindergartens usually cost 4-9 yuan, primary and secondary schools cost 6-12 yuan, and colleges and universities cost more than 12 yuan according to the campus size. The key is to draft the window first, not start with the "standard configuration table.

surveillance scene patchwork to the narrowest?

I don't have. 3.5mm patchwork can be established in campus scenes with a viewing distance of more than 2.5 meters and a dynamic round-robin tour. If the distance between the nearest duty seat is 1.5-2 meters and the picture at the door spans the screen, the patchwork should be inclined to 1.8mm. Patchwork is a physical property of the screen body, which cannot be changed in the later period, but there is no need to pay too much premium for the 0.88mm of the long-distance scene.

how to achieve a key alarm linkage?

The linkage is triggered by the security platform (the alarm point is bound to the camera), and the associated picture is pushed to the large screen designated window through the linkage interface of the processor or decoder. The display system verification is "whether the ejection is timely, whether the location is correct and whether it can be restored", and the scope of joint adjustment should be written into the contract. Public security networking belongs to the platform side docking, not included in the display system quotation.

Is it a big screen to save the video for 90 days?

No. The storage duration is implemented by the platform and storage side according to the territorial requirements. The display system is responsible for the clear access of the playback screen on the monitoring wall. When purchasing, "save" and "read" shall be checked separately, and both shall be tested during acceptance.

Can the existing cameras and VCRs be used up?

Item-by-item verification: whether the stream fetching permission is open, whether the protocol and encoding are compatible with the new decoder, whether the interface matches, and whether the software authorization is overwritten. When mixing new and old screens, a simultaneous-illumination test is mandatory. If color differences or brightness degradation are significant, do not force the combination; consider using partitioned operation or replacing some of the modules.

What is the use of direct supply from source factories for school projects?

Three practical values: first, when the space of the monitoring room is irregular, the bracket and patchwork combination can be customized according to the project instead of being combined in standard products; Second, when the splicing wall needs to be replaced after five years, the supply of spare parts in the source factory is more reliable than that of traders. Third, OEM/ODM support, integrators can make brand customization. During the assessment, verify the factory’s qualifications and the source of the panels.

XI. Conclusion

The judgment chain of the campus security monitoring splicing screen scheme can be compressed into five steps:

Dismantle the three on-duty modes → list the signals and divide them into links → use the window draft to push back the number of screens → convert the number of decoding channels according to the frequently displayed position → incorporate the alarm linkage into the joint reconciliation and acceptance.

The particularity of the campus scene is not in the "screen cheaper", but inTime rhythm determines specification priority, alarm linkage is the core value, weak operation and maintenance ability requires simple maintenance, minor privacy requires strict authority.. The professionalism of the program is reflected inThe picture at the gate of the peak can really be seen clearly, the low light at night is really not dazzling, the alarm triggered the large screen to really pop up, and the spare parts can really be found after five years when it broke down.. Write these judgments into the draft window, decode conversion, linkage reconciliation and acceptance list, and then use.LCD splicing screen China source factoryThe campus monitoring wall is not "installed for others to see", but the operation interface that the personnel on duty really rely on.

The peak can see the door clearly, and it is not dazzling at night. The alarm bomb shows that there are spare parts in five years.

Campus security monitoring splicing screen scheme