High-speed railway station monitoring splicing screen scheme passenger transport and public security multi-network isolation wall configuration-Qunmao

The splicing screen of high-speed railway station is not the same as subway, airport and prison. The subway should be divided into CCTV and PIS on the same wall, the airport should have non-IP superposition of airside radar, and the prison should be divided into zones to solidify the ban on wheel patrol. The core contradiction of high-speed railway station is in another place:The passenger monitoring wall and the public security joint service wall must be physically separated.. The railway network, the public security video private network, and the station office network are all independent; a single decoder cannot arbitrarily pull streams from multiple networks. The requirements for “original manufacturer authorization, test reports, and isolation instructions” in China Railway procurement are even stricter than those in most other industries. In this paper, public documents such as Xuzhou Railway Public Security Command Center and Railway Isolation Network Gate Group Standard are used as anchor points to dismantle the configuration logic of the three-level wall structure of passenger duty room, public security duty room and hub command center, to translate multi-network isolation, spell control and tear-down items, and patchwork selection into a copyable purchase list, and to explain what should be verified when docking * * LCD splicing screen source manufacturers in China.

1. first look at the public documents: the actual structure of high-speed railway station procurement and isolation of hard indicators.

The public bidding data for the splicing screen of high-speed railway station is not as dense as that of the airport, but it can dig enough anchor points to push back the configuration and procurement logic.

Xuzhou Railway Public Security Command Center Display Large Screen ProjectIt covers five command rooms of Xuzhou Station, Xuzhou North Station, Xuzhou South Station, Police Detachment and Railway Public Security Department. The structure of the equipment list itself is a beacon signal:12 LCD splicing screens, 1 video integration platform (12 screens) and 1 network switching security isolation equipment, which are purchased in parallel.. The description of the isolation device is very clear: "Using the public security video private network platform as a networking platform requires complete physical isolation between the public security video private network and other networks such as the railway network, the public security network, and the station private network. Decoding control equipment is deployed in the video private network". This project directly proves that for the splicing screen project of high-speed railway station/railway public security, items must be disassembled for splicing control and isolation, and "screen containing decoding" cannot be written in the past.

Group Standard for Railway Video Security Isolation Glues (T/VSTR 027-2025)The hard index that can be written into the control file is given: the delay of video call through the isolation gate.≤ 100ms, data transmission delay ≤ 80ms; When the average code rate per channel is 2Mbit/s, a single set of isolation gates outputs concurrently≥ 256 road4Mbit/s ≥ 128 road, 8Mbit/s ≥ 64 road. The standard also makes it clear that the isolation gate is the exchange of information between the railway external service network (including the public security video transmission network) and the video surveillance system.The only entrance. This is more specific than any general expression of "one-way net gate" and is the hard core content that distinguishes the high-speed railway station scheme from other scenarios.

Splice screen unit itselfThe reference parameters of railway public security related items can be deduced from the administrative documents of the same system: 46 inches, bilateral patchwork ≤ 3.5mm, brightness ≥ 500CD/m, contrast ≥ 3500:1, definition ≥ 900TVL. The 49-inch specification also appears in railway-related procurement, with patchwork seams ≤ 3.5mm and brightness 500cd/m. The sight distance of the duty room in high-speed railway station is usually 3~5 meters, and 3.5mm stitching and reasonable division layout are completely sufficient. It is not necessary to blindly go up to 1.7mm.

2. high-speed railway station's three-level wall-to-wall structure: what to see and what cannot be mixed at each level

The essential difference between the high-speed railway station scheme and the general monitoring room scheme lies inThe boundary between the network domain and the business domain. The picture watched by the passenger attendant goes through the railway security network, and the picture watched by the public security attendant goes through the public security video network. The two sets of signals can enter different panes of the same wall,Signal lines do not cross, platforms do not exchange visits, and decoding nodes are independent.。

Signal building/driving auxiliary monitoring is divided by small wall or single screen, connected to equipment room, cable shaft and lightning protection area, emphasizing low delay, and not connected to passenger wheel patrol group. This point is usually not taken seriously, but once the traffic-related signal is delayed, it affects the scheduling judgment rather than just the security record.

3. LCD splicing screen unit: high-speed railway station version parameter baseline

The railway-related administrative documents have a statement on the splicing unit that is worthy of being included in the control target:Whole machine design, no flying line screen, complete back shell. The space of the duty room is usually compact, and the assembly of flying wires is a hidden danger during maintenance. In addition, "the subjective evaluation of image quality reaches the level 5 damage score specified by the GB50198-2011 and above level 4" is a common clause for railway public security related projects, which can be used as the bottom line requirement for image quality acceptance during procurement.

4. Video Integrated Platform and Isolation Layer: Two Things Must Be Disassembled for National Railway Project

4.1 Spelling Control/Video Integrated Platform Single Column

In the equipment list of Xuzhou railway public security project, "video integrated platform (12 screens)" is a purchase item independent of LCD splicing screen. This structure illustrates the logic of national railway procurement:Screen is the display terminal, spell control is the core of signal scheduling, the two separate control standard, separate pricing, separate acceptance.. If the integrator responds by pressing "Splice Screen with Built-in Decoding", the technical review phase will be identified as a deviation.

The key indicators of the video integration platform can refer to the technical specifications of the Xuzhou project: after the signal source is collected, it passes through the high-speed backplane bus to the output display time.≤ 35ms, image switching time<20ms. These two numbers have a direct impact on the operating experience of the attendant, and switching black screen or delay is unacceptable in emergency scenarios.

4.2 isolation gate according to the standard write parameters

High-speed railway station/railway public security project can not only write "physical isolation" four words. The transmissible clauses provided in T/VSTR 027-2025 are:

• Delay of video call passing through the isolation gateway≤ 100ms, data transmission delay ≤ 80ms.
• Concurrent output at 2Mbit/s code rate≥ 256 road;≥128 channels at 4 Mbit/s.
• Protocol conversion supports GB/T 28181 and Q/CR 575.
• The isolation gate is the only entrance and exit for the information exchange between the railway video surveillance system and the public security video transmission network.

Writing these articles into the bid control documents is much more binding than the "one-way net gate. The integrator can also calculate the specifications and quantity of the isolated equipment according to this when bidding, instead of waiting for the winning bid to find the manufacturer to supplement the parameters.

5. four copyable configuration templates

Template A | Standard High-speed Railway Station Passenger Duty Room

Configuration: 2 × 2,46 inches or 49 inches, 3.5mm patchwork, brightness 500cd/m. Single video integrated platform, 16 to 32 road 1080P real solution. Access to the waiting hall/ticket gate/platform IPC access control and security check preview. Curing layout, not connected to the Internet.

Budget reference: the parameter baseline of the 46-inch 3.5mm splicing unit in railway-related government procurement is clear, the unit price of the screen body is estimated according to the water level of similar government procurement, and the comprehensive cost of the 2 × 2-scale screen body control bracket is roughly in the range of 5~80000 yuan, depending on the configuration of the control input and output board.

Template B | High-speed railway station Public Security Duty Room

Configuration: 2 x 3,55 inches, 3.5mm. Public security network independent decoding node isolation network gate GB/T 28181 to the higher level. Station entrance/ticketing/security check/perimeter curing window, alarm pop-up window. The isolation gate shall be calculated according to the delay and concurrency requirements of T/VSTR 027-2025.

Budget Reference: The structure of 12 screens, 1 video integrated platform and 1 set of isolation equipment for Xuzhou Project can be used as configuration reference. 2 x 3 scale (6 screens) screen body spell control isolation equipment, the budget is roughly in the range of 12 to 180000 yuan.

Template C | Hub Station Integrated Command Center

Configuration: 3×4 or 4×4, 55 inches, 1.7 mm. Three sets of independent decoding domain (passenger/police/PIS preview) GIS base map. Scenario plan: daily/large passenger flow/fire/anti-terrorism. The isolation layer is configured separately for multiple domains.

Budget reference: the number of screens for hub-level projects (12-16 pieces) plus multiple sets of control and isolation equipment, the budget range for screen control and isolation construction is usually 35-600000 yuan, depending on the splicing specifications and the number of network domains.

Template D | Existing Station Renovation (Reuse and Mixed Connection)

Configuration: flexible splicing according to the size of the existing wall, mainly 46/49 inches. The old NVR and the new IPC are mixed, and the control device and isolation equipment are supplemented. For projects with tight construction period, the construction capacity of spare parts in advance and skylight period shall be confirmed.

Budget reference: The variables for the renovation of existing stations are the proportion of benefits and the requirements of the construction period. The screen part is calculated according to the actual number of blocks x unit price, and the control and isolation equipment is newly purchased. The overall budget is close to the template A/B, but the construction organization cost may rise.

6. Site Survey List (can be sent directly to Party A before sales)

1. Station building type: Intermediate station/hub station/existing transformation. Wall net size, sight distance, bearing, whether the window light.
2. Zoning and number of ways: several waiting halls, ticket gates, platforms, public security duty room location, total IPC and coding format.
3. Network Domain Status: Whether the railway security network and the public security video private network have platforms, whether they can be physically isolated, and whether isolation equipment already exists.
4. PIS Preview Requirements: Whether it is necessary to preview the train number information, PIS interface protocol and layer format with the wall in the duty room.
5. alarm source: The protocol and interface type of the access control/intrusion/fire protection/help button determine the joint configuration of spell control.
6. school time sourceStation CLK/NTP server, full node time alignment required.
7. Control List: patchwork, brightness, CNAS report, Ministry of Public Security inspection report, isolation gate parameters (delay/concurrency), original factory authorization, construction period.

Why does 7. suggest docking LCD splicing screen Chinese source manufacturers

The acceptance logic for high-speed railway station/railway public security projects is different from that for ordinary commercial projects: integrators can transfer goods,The test report does not match the model, the isolation equipment parameters do not meet the standards, the bracket is not cold-rolled steel from the original factory, and the spare parts cannot arrive before the spring festival.These four things are hard injuries in the national railway acceptance and daily operation. Under the trading model, report manipulation and ad-hoc reconfiguration of control configurations are the most common issues.

A railway project that can stand up to questioning.LCD splicing screen China source manufacturersIt should be able to answer the following five questions:

• Patchwork measured values and CNAS report pageRelevant administrative departments of railway public security have clear requirements on patchwork, brightness and contrast, and the nominal value and measured value must be consistent.
• Ministry of Public Security Inspection Report Covering Bidding Model: Common control items for railway projects, traders usually cannot produce reports for the corresponding models.
• Whether the support is cold-rolled steel from the original factory, and whether drawings can be produced according to the space of the station building.: The wall conditions of the duty room of high-speed railway station are different, and the bracket cannot be covered by standard products.
• Can the control and isolation equipment be matched for response?Xuzhou project has three parts: screen, control and isolation. If the source factory can only supply screen, the integrator will have to find two other ones, thus increasing the coordination cost.
• Spare parts response and sunroof screen change capability: The construction period pressure delivered before the Spring Festival requires spare parts to be first and single-screen hot plug.

Shenzhen Qunmao Qunmao(szqunmao.cn) can push back the splicing specifications, bracket drawings and splicing control configuration according to the bidding documents of high-speed railway station, support OEM/ODM, and make the whole wall color correction at the factory. What needs to be clear is that Qunmao's business information shows that the company was established in 2021 and has a registered capital of 2 million, which is suitable for positioning"Supplier of LCD Splice Screen to be Responsive as per Tender Configuration", rather than claiming that "years of national iron deep cultivation". For integrators, the "splicing unit splicing control node bracket cable" is pre-adjusted and delivered by the same source factory. While the on-site debugging cycle is compressed, the CNAS splicing measured page and the whole wall color calibration report can be issued together with the configuration sheet.

For high-speed railway station project selection, send five questions to three candidate suppliers: Is there any actual measurement page for CNAS patchwork? Does the inspection report of the Ministry of Public Security cover the bidding model? Can the drawing of the bracket not be produced, is it the original cold-rolled steel? Can the parameters of the isolation equipment be written into the response table according to T/VSTR 027? How many days before the Spring Festival? Two companies that can give complete answers and attach supporting documents will enter the next round. No matter how low the price, if the materials are not fully provided during inspection, it will result in rework.

8. Conclusions and Selection Suggestions

• Passenger Duty Room: 46/49 inch 3.5mm is the pragmatic baseline for railway-related political policies, and it does not need to go up to 1.7mm. Budget priority is left to the number of actual solutions and spare parts.
• Public Security Duty Room: 55 "3.5mm, independent decoding node isolation gate. The parameters of isolation equipment shall be written according to T/VSTR 027-2025, and "one-way net gate" shall not be written.
• Hub Command Center: 55 inch 1.7mm, three sets of independent decoding domains, isolation layer and network configuration. The proportion of screen budget is usually lower than that of spell control and isolation, so don't over-allocate on the seam.
• Procurement action: Screen, spell control, isolation three points, refer to the list structure of Xuzhou railway public security project. "Spliced screen with decoding" is a trap in the national railway project.
• True link: CNAS patchwork test page, Ministry of Public Security inspection report, bracket drawing, isolation gate parameter response table. With all four elements in place, the foundation for the technical review is essentially solid.

LCD splicing screen China source manufacturersThe value in the high-speed railway station project comes down to one sentence: let the person responsible for the inspection report, bracket drawings and spell control configuration supply the screen, instead of letting the transfer person look for the report everywhere during the acceptance.