Elevator Advertising Machine Parameters Specifications Overseas Engineering Procurement Selection Standards and Configuration List

The thickness of the two elevator advertising machines with the same nominal 21.5 inches may differ by 20mm. In the dual-screen configuration, one can output independently and the other can only broadcast at the same time. One of the networking schemes is to have a built-in 4G module and the other must lead the antenna to the top of the elevator. In the procurement of overseas elevator projects, what really determines whether the project can land smoothly is not the size figures on the publicity page, butElevator advertising machine parametersThe set of comparable and identifiable configuration items behind it. This article disassembles item by item according to the five dimensions of hardware installation, display optics, mute anti-interference, system networking and project selection, and gives the configuration and processing methods and frequently asked questions of the two landed projects.

1. elevator advertising machine hardware and installation adaptation parameters

This section solves three problems: whether it can be installed, whether it can be fixed or not, and whether it can be removed for maintenance in the later period. Only when all three are established can we talk about display and networking.

1.1 the overall shape, thickness and installation space

• The screen diagonal size is not equal to the overall size. A 21.5-inch 16:9 model has a display area of about 476 × 268mm. After adding the frame and structural parts, the whole machine is usually above 520 × 320mm. The horizontal size of the double-screen model needs to be superimposed with a second screen.
• The thickness of the whole machine must indicate whether the back bracket, interface plug and wiring bending space are included. The structure depth of single-screen wall-mounted machine is usually 40 to 60mm, while that of double-screen machine or machine with independent power supply compartment is deeper. The clearance between the internal wall plate of the elevator and the door cover shall be reserved according to the maximum depth.
• The maintenance opening is more easily overlooked than the installation size. When the equipment needs to be removed from the front or side for maintenance, the surrounding must be set aside for disassembly and assembly allowance, and the tools cannot be found out after the wall plate is sealed.
• The structural parameters of the whole machine can be referenced to the actual supply model.Indoor Digital Signage ProductsThe specifications and structure drawings shall prevail, and the measured dimensions inside the elevator shall be compared item by item.

1.2 installation hole position, support and outlet mode

• The hole spacing depends on the actual installation hole diagram, not just the VESA standard hole spacing. Most elevator renovation projects use customized brackets, and the holes must be staggered from the stiffener positions of the wall plates.
• Elevator internal wall panels are commonly 1.2 to 1.5mm steel plates or composite decorative panels. Direct tapping and fixing are not reliable. Backing plates or through bolts are required to transmit the load to the elevator frame.
• The power line and the signal line are routed separately to avoid long-distance parallel with the door machine frequency conversion harness, which is the most basic construction requirement to suppress on-site interference.
• In the wireless scheme, the antenna feeder should be reserved to the top of the elevator or the side of the hoistway, and the antenna should not be pressed inside the metal wall plate.

1.3 enclosure, protective panel and working environment

• The shell is mainly made of sheet metal plastic spraying or aluminum profile, and the front panel protection structure is commonly 3 to 4mm tempered glass or high-permeability acrylic. The impact resistance and optical performance of the two are different. The specification shall specify the material and thickness.
• The working temperature shall be marked as 0 to 40 degrees Celsius under non-condensation conditions. For projects in humid areas, additional moisture-proof treatment and dust-proof net configuration of heat dissipation openings shall be confirmed.
• If the supplier declares the protection grade, flame retardant or anti-vibration performance, the corresponding material description or test report is required, and only adjectives are not included in the selection basis.

1.4 Structure and Output Verification of the Dual-Screen Configuration

• The common 21.5-inch main screen of dual-screen models is equipped with a 10.1-inch sub-screen. The resolution, proportion and installation direction of the two screens are often different, and the structure diagram should be marked separately.
• The master control must support dual independent output to truly realize different display. There is only one way to output and split the screen. The two screens can only play the same content or cut the screen, and cannot be scheduled independently.
• Confirm the interface form and resolution limit of the two outputs, such as the main screen 1920 × 1080 and the secondary screen 1280 × 800. The interface may be LVDS, eDP or HDMI combination. Different combinations have different requirements for motherboard selection.
• Same-broadcast and different-broadcast are two configurations, and the specifications should be stated separately, instead of "supporting double screens" in general ". For the dual-screen structure scheme, referDual Screen Digital Signage Product Page。

Consistency of 1.5 key component model and supply

• When comparing different schemes in the selection stage, priority should be given to whether the specifications indicate the models and versions of LCD panel, motherboard and power module. Only write specifications of size and resolution, it is impossible to judge the actual difference between the two machines.
• Batch projects should pay attention to supply consistency: when multiple batches of the same project arrive, panel batch changes may bring about differences in brightness and color temperature. The supplier's batch management of key components should be confirmed during the selection.
• If the specification refers to life or MTBF data, indicate whether the test object is a panel, power supply or complete machine, and the test conditions. Panel life and machine warranty life is not the same concept.

2. brightness, anti-glare, size and frame parameters

The core of the display parameters is not to enlarge the number, but whether the content can be seen clearly and the reflection can be accepted under the actual illuminance and viewing distance inside the elevator.

2.1 brightness confirmed by installation environment

• The lighting conditions inside the elevator are different from those in the waiting hall. The interior of the elevator is mainly artificial lighting, and the waiting hall is affected by natural light and spotlights, so the illuminance is higher and changes more. The brightness strategies of the two types of positions are different.
• The nominal brightness should be distinguished from the panel brightness or the whole machine display brightness. After the protective glass is installed, the brightness of the whole machine will be attenuated, and the specification shall give the value of the whole machine in the state.
• The unit of brightness is nits (cd/m², candela per square meter). Elevator internal commonly used 250 to 350 nits can meet close reading, too high brightness but dazzling, and increase power consumption and heat dissipation pressure.
• Verify that manual dimming, timed dimming, or ambient light sensing is supported. In multi-building batch projects, timing dimming can significantly reduce night light pollution complaints.

Prototype inspection of 2.2 anti-glare and reflection

• Anti-glare is mainly realized by surface treatment. The common scheme is anti-glare foggy glass or anti-reflection coating. The specification should give haze or reflectivity index.
• The mirror stainless steel elevator, the top downlight direct, and the side decorative light strip are the three most problematic reflective scenes. The prototype must be viewed under similar lighting conditions.
• The criterion is whether the text can be read continuously at normal viewing distance and angle, not whether the screen can not see the reflection at all. No panel can be absolutely non-reflective, and suppliers who write "completely non-reflective" can be excluded directly.

76.67cm inch, scale, resolution and horizontal and vertical screen

• The dimensions are determined by a combination of the available walls and the viewing distance. The viewing distance inside the elevator is usually 1 to 2 meters, 21.5 to 27 inches is a common choice, and the waiting hall can be larger.
• The resolution direction of horizontal screen is opposite to that of vertical screen, with horizontal screen 1920 × 1080 and vertical screen 1080 × 1920. The direction of the content material must be consistent with the installation direction, otherwise it will stretch or leave black edges.
• The resolution of the two screens in a dual-screen project is usually different, and the material specifications should be set separately by screen during CMS scheduling.

2.4 the dimensioning method of the border and appearance parameters

• The border width and non-display area should be separately marked. If the non-display area of the narrow frame model is still wide, the actual appearance and parameter description will be different.
• The front color, surface treatment and logo customization are the appearance deliverables, and it is necessary to confirm whether the change affects the overall shape, heat dissipation opening or structural strength.
• Such descriptions as ultra-thin and extremely narrow must be accompanied by specific millimeters, and only the appearance description of adjectives cannot be used for selection comparison.

3. mute operation, anti-interference and power supply parameters

The elevator is a closed space where people stay for a long time, and noise and electromagnetic interference will be amplified. This section splits "silent and stable" into conditions that can be judged.

3.1 Fanless Design and Whole Machine Noise Condition

• The fanless design eliminates the noise of the cooling fan. The motherboard inductance and power module may still produce high-frequency howling, and the whole machine is not equal to zero noise.
• The noise value must indicate the test distance, background noise and operating load. Elevator engineering is often 1 meter at not more than 50 decibels A right as a reference condition for elevator fan noise, which is engineering practice, not a mandatory product standard.
• Advertising audio is another source of noise. If the project requires default mute, confirm whether the system supports turning off the audio output or limiting the maximum volume when selecting the model.

3.2 EMC data and field interference verification

• For models exported to the EU, EMC is usually evaluated according to EN 55032 radiation and conducted emission and EN 55035 immunity, and the whole machine should reach Class B limit.
• Check the model and configuration corresponding to the EMC file, focusing on whether the power module, wireless module and cable are consistent with the quotation configuration. After replacing the power supply or installing the 4G module, the original report may not continue to apply.
• On-site interference control has three actions: keeping the distance between the equipment and the elevator control cabinet, separating the signal line from the power line, and reliably grounding the metal shell. In the prototype stage, observe the display and networking status according to the safety process confirmed by the project party.
• No supplier can promise that "any scene will never interfere with the elevator". What can promise is to provide test data of corresponding configuration and cooperate with on-site investigation.

3.3 input power, power consumption and abnormal recovery

• The power input is usually 100 to 240V wide voltage, 50 or 60Hz, and the output is DC 12V or 24V. The specification should clearly state whether the adapter is internal or external.
• Typical power consumption, rated power and standby power consumption are three different values, and the power supply capacity of batch projects is calculated according to the rated power.
• The power failure recovery capability shall be measured: whether the content is retained after the power failure, whether the incoming call is automatically turned on, and whether the playback progress before the power failure is returned. This item directly determines the operation and maintenance workload in areas with unstable voltage.

3.4 heat dissipation and continuous operation conditions

• Confirm the allowable installation direction, heat dissipation gap and upper ambient temperature limit. If the heat dissipation opening is blocked in the embedded installation, the temperature rise will be significantly higher than that of the wall mounting.
• For models that are declared to support 7 × 24 operation, continuous operation test records of the corresponding models shall be provided, and the test conclusions of a certain model shall not be applied to the entire series.
• Over-temperature protection and abnormal alarm are standard or optional and are listed separately in the configuration table.

4. System, Playback and Networking Configuration

This section answers two questions: can the main control carry the actual playback task, and networking inside the metal elevator is unreliable.

4.1 Master, Memory and Storage Confirm by Play Task

• The master model, operating system version, memory and available storage space shall be written into the specification. Common configurations are quad-core processors with 2 to 4GB of memory and 16 to 32GB of storage, depending on material capacity and update frequency.
• CMS client compatibility is a hard condition. If the project already has a third-party CMS, first check whether the CMS provides the client or API of the corresponding system version, and then discuss the hardware configuration.
• The storage space is estimated by multiplying the total amount of material by the number of reserved versions. It is only calculated by the size of a single video and will be exploded during the first batch update.

4.2 video decoding and dual-screen output capability

• Panel physical resolution, decoding capability and actual output capability are three things. The panel supports 1080p, which does not mean that the main control can decode two 1080p channels at the same time and output them to two screens respectively.
• Confirm the supported video encoding, frame rate, and upper bitrate limits, commonly H.264 and H.265,1080p 60 frames. High code rate materials should be tested on the prototype with real customer files.
• When the dual-screen is different, the resolution combination of the two screens will affect the decoding load. The low-resolution secondary screen usually has less pressure, and the dual 1080p combination needs to be verified separately.

Selection of Networking Mode in 4.3 Elevator

• Metal elevators have 20 to 30 decibels of shielding attenuation for wireless signals. 4G or 5G modules are installed inside the elevators, and the signal strength is often one to two cells lower than that outside the hoistway. Material download interruption is a common phenomenon.
• There are three types of feasible schemes: the accompanying cable goes through the wired network, the Wi-Fi inside the elevator is connected to the hoistway AP, and the 4G module is equipped with an external antenna to lead to the top of the elevator. The cost and construction difficulty of the three types of schemes are different in sequence.
• When selecting a cellular network, check whether the frequency band of the target national operator matches the frequency band supported by the module, and confirm that the installation position of the SIM card is convenient for later replacement.
• "With 4G module" can not be directly equivalent to "elevator internal stability network", the field signal strength must be measured by the project side to confirm.

4.4 offline cache, offline playback and recovery mechanism

• The content should support local playback after the download is completed, and the network only undertakes the distribution task, not the real-time streaming.
• Confirm the behavior of the download interruption, network interruption, and device restart: whether to keep the original content, whether to resume the transfer from the interruption, and whether to verify the integrity of the file.
• After the network is restored, it should be able to continue to download unfinished tasks, report equipment status and synchronize scheduling. For models that support dual-partition upgrade, you can roll back to the original version if the upgrade fails.
• The local material capacity and automatic cleaning mechanism should be clearly written to prevent the new content from being unable to be distributed due to the full storage of old materials.
• The playback log records the playback behavior, which is different from the actual number of viewers and the advertisement exposure statistics, and is confirmed separately when selecting the type.

4.5 CMS background capabilities and usage

• We provide a supporting CMS, the background supports content grouping, scheduling, zoning, multi-language and time zone settings, dual-screen models can be scheduled separately.
• Remote O & M supports online status viewing, fault prompt, remote restart, and remote upgrade. Upgrade failures can be rolled back.
• In terms of interfaces and permissions, API documents, account permission classification, and transmission encryption are provided. The deployment method is selected according to the project conditions.
• The specific setting method of the background is configured by the buyer according to its own operation process. The selection phase focuses on confirming whether the functional coverage meets the project requirements and whether a demonstration background or test account is provided for actual operation verification.

How to determine configuration and acceptance requirements for 5. media projects

5.1 collate configuration priorities by project conditions

5.2 Distinguish Standard, Optional, Customized and Validated

• Standard configuration: The model is delivered by default and is included in the quotation.
• Optional: There are confirmed options, mark-up can be delivered.
• Customization: Structural, software or hardware changes need to be evaluated and lead times confirmed separately.
• Needs verification: It can only be confirmed through prototype or compatibility test, and cannot be regarded as an existing function in advance.

The four types of states are clearly divided, and the selection comparison is enforceable. "Can be discussed and developed" cannot be written as an existing function.Elevator advertising machine configurationList.

5.3 the correspondence between overseas compliance documents and configurations

• Advertising machines exported to the European Union usually involve EMC and LVD directives, and RED directives are also required with wireless modules. The coordinated standard directions include EN 55032, EN 55035 and EN 62368-1.
• The key point of checking during selection is not whether there is CE mark or not, but whether the conformity declaration corresponds to which model, which configuration the technical documents cover, and whether the wireless module or power supply is reevaluated after changes.
• Which party provides and which party reviews the documents shall be made clear at the project communication stage. Overall compliance responsibilities cannot be replaced by certified parts.

5.4 Prototype Testing and Batch Configuration Locking

• Provide the measured size of the project site and the real material of the customer, without demonstration video instead.
• Confirm the model, master control version, system version and software configuration of the prototype, and record the configuration baseline.
• The test items cover installation adaptation, viewing effect, playback smoothness, networking, network disconnection recovery and power failure restart.
• Revise the configuration and retest after problems are found, and use the final results as the configuration basis for batch delivery.
• It is the configuration, not the appearance, to be locked after the prototype passes.

6. the configuration of two engineering cases

6.1 Southeast Asia office group double screen project

6.2 Middle East Hotel Mirror Elevator Project

7. elevator advertising machine parameters FAQ

8. elevator advertising machine parameter checklist

The following table can be used directly as an inquiry attachment to obtain corresponding information from suppliers item by item, which is more efficient than facing the publicity page.

Take these nine categories.Commercial media screen parametersOrganize into an inquiry form, the supplier's response quality will directly open the gap: can give item by item documents and test records, usually also have the ability to adjust the configuration according to project conditions.