AI Smart Lamp Post Screen-DUNHUA

Products

Product Description

Specification Parameters

Product Model	DHT-LED-P2.5	DHT-LED-P2.94	DHT-LED-P3	DHT-LED-P3.125	DHT-LED-P3.3	DHT-LED-P3.84	DHT-LED-P4
Pixel Pitch (mm)	2.5	2.94	3	3.125	3.3	3.84	4
Module Size (mm)	200mm*200	200mm*200	192mm*192	200mm*200	200mm*200	200mm*200	256mm*128
Module Pixels	80 dots*80 dots	68 dots*68 dots	64 dots*64 dots	64 dots*64 dots	60 dots*60 dots	52 dots*52 dots	64 dots*32 dots
White Balance Brightness	7500cd/m²	7500cd/m²	6000cd/m²	7500cd/m²	7500cd/m²	7500cd/m²	6000cd/m²
Protection Level	Front IP65
Pixel Composition	1Pure Red 1 Pure Green 1 Pure Blue
Wavelength Error Range	≤5 nm
Pixel Viewing Angle	Horizontal:+140°-140° Vertical: +140°-140°
Pixel Lifespan	>100000Hours
Brightness Uniformity	≥99%
Chromaticity Uniformity	±0.001Cx, Cy within
Brightness Calibration	Supports single-point brightness calibration
Contrast Ratio	10000:1
Color Temperature	2000K-10000K adjustable
Gray Level	16Bit
Frame Rate	60Hz
Refresh Rate	1920～3840Hz
Pixel Failure Rate	<1/1000000, no continuous failure points
Assembly Process Requirements	Pixel pitch error <0.3mm, module flatness <0.05mm
Grounding	Should have a protective grounding terminal, grounding resistance not greater than 0.1Ω
Safety Marking	Protective grounding terminal should be marked, warning signs should be present at the fuse and power supply, after durability testing, the marking should be firm and clearly identifiable.
Power Supply Average Efficiency	The power factor of the LED display power supply should not be less than 95%, and the conversion efficiency should not be less than 90%.
Brightness Adjustment	Has the function of automatic brightness adjustment according to environmental illumination, supports manual, automatic, and programmable adjustment (0-100% adjustable), and brightness adjusted to 600cd/m²and below, without obvious gray loss.
Multilayer Printed Circuit	Multilayer printed circuit board, PCB surface gold plating process.
Energy-saving Method	Uses common cathode energy-saving technology.
Energy-saving Effect	Reaches level 1 energy efficiency standard.
Data Storage	Supports storage and retrieval of module-level brightness and chromaticity calibration data.
Installation Method	Supports front installation, rear installation, wall-mounted installation, hanging installation, and other types of installation applications.
Protection Function	Has functions such as salt spray resistance, electrostatic protection, flame retardant fire protection, electromagnetic interference protection, lightning protection, insect resistance, and wind protection.
Smart Monitoring	Supports automated content review and monitoring, reducing public playback accidents.
Screen Body Function	Has protection functions such as monitoring, early warning, cooling, and power-off.
Fault Detection Function	Can monitor the working status of the display in real-time, with automatic fault alarm function.
Continuous Working Time	7*24 hours
Safety Features	Complies with GB 4943.1, IEC 60950-1, EN60950-1 and other requirements.
Fire Retardant	Tested according to BS476-7 fire retardant standard, mask fire retardant level meets HB level standard, PCB fire retardant level meets V-0 level standard.
Blue Light Test	The spectral radiance of the LED light source weighted by the blue light hazard function, (blue light weighted radiance LB) does not exceed 100W.m-2.sr-1, preventing retinal photochemical damage caused by long-term blue light radiation.
Ground Leakage Current	The leakage current should not exceed 1mA/m.²(RMS)
Dielectric strength	Apply a test voltage of 1500V (RMS) 50Hz sine wave between the AC power input terminal and the metal outer frame or accessible metal parts (connected to protective ground) for 1 minute. During the test, there should be no insulation breakdown or arc flash.
High temperature and high humidity operation	Support operation for 8 hours at 50℃, 90% RH environment, then return to normal temperature. The appearance, structure, and function of the tested sample should be normal during and after the experiment.
Low temperature operation	Support operation for 8 hours at -45℃ environment, then return to normal temperature. The appearance, structure, and function of the tested sample should be normal during and after the experiment.
Operating temperature (℃), humidity (RH)	-25 to 45, 10 to 90% without condensation.
Smart speaker	Industrial-grade dual-core chip (ARM + DSP); built-in high-fidelity linear array speaker and stereo D-class power amplifier; based on TCP/IP SIP open protocol, international standard SIP protocol, can integrate third-party SIP terminals; HD voice/video, G.729 voice encoding, H264/265 video encoding. Supports seamless switching between local audio sources and network broadcasting.
Software system	Features material display, network streaming display, network screen capture, scene management, plan management, multi-language support, log management, multi-user, multi-permission, soft splicing, hard splicing, multi-level hot backup, display screen status monitoring, multi-screen control, shielding user operation errors, etc.
Database	Supports MySQL, SQLServer, Oracle, Sybase, DB2, PostgreSql, MariaDB, sqlite database self-capture function, and develops secondary interface protocols for unified platform release.
Voice commands	Supports real-time voice input, parses voice commands, returns parsing results in real-time, supports voice interaction, and supports digital human virtual services.
Human posture recognition	Supports precise recognition of human 3D posture through AI cameras, and the smart screen can capture dual-person body movements and provide accurate feedback.
Application screen projection	Supports projecting mobile applications onto the smart screen, allowing the current application on the phone to continue playing on the smart screen even if it is in the background.

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