Product details:

I. Overview

Gantry styleVariable information intelligence board, mainly used forGive the highwayuserprovideRoad condition information, weather information, reminder information, etc,It plays an inseparable role in ensuring driving safety, transportation efficiency, and vehicle usage limits.When local road sections cannot be accessed due to maintenance or accidents, etcRemind drivers to divert traffic in a timely manner.

2、 System composition

Gantry styleThe intelligence board is composed ofLEDDisplay screen, controller and its built-in control software, chassiscolumnThe project consists of gantry frames, electrical protection and lightning protection devices, installation connectors, and power and signal cable engineering required for the installation of variable information boards (including the laying and connection of cables and cables from roadside handholes to equipment).

3、 System functions

1The content of the logo is clearly visible day and night. Observer(Normal person, corrected vision)1.0above）When the ambient illumination is greater than5000lxThe maximum distance at which the content of a sign can be correctly read from a specified viewing angle under clear weather and direct sunlight on the sign surface(Static visual recognition distance) ≥250m；

2.under normal circumstancesThe vehicle120km/hWhen driving at speed, the observer(Normal person, corrected vision)1.0above）When the ambient illumination is greater than5000lxUnder the conditions of clear weather and direct sunlight on the marker surfaceThe maximum distance (dynamic visual recognition distance) that can correctly read the content of the sign from a specified perspective is ≥210m；

3.Can display Chinese, English, Western and simple graphicsWhen there is no display content, the display screen is completely black with no bright spots;

The installation of variable information signs can ensure that both large truck drivers and car drivers can easily recognize them, while also ensuring the safety of variable information signs that are not easily damaged. In36m/sCan work normally under wind speed and withstand40m/sThe wind speed.

4、 Technical indicators

1. Display screen structure and installation

The variable information sign adopts a detachable modular structure. The display screen and controller enclosure are all-weather and weather resistant(And equipped with ventilation, heat dissipation and other devices) to ensure that the display screen can work normally under various environmental conditions. The box structure is made of cold-rolled steel plate material�The color is non reflective blackAnti glare, protection level meetsGB IP65Standard.

2. System specification description

expresswayAnd the tunnelGantry styleVariable message board display module:

（1) Display module design

A、 pixel pitch31.25Mm or 25mm，3R2G，2R1G，4R2G. (Size:1.0*6.0M 1.0*8.0M 1.0*10M1.0*12M1.0*14M）

B. The viewing angle of the LED is 30 °, and the red LED is made of aluminum, indium, gallium, and phosphorus (ALInCap) produced by HP in the United States; Four element tube. The green and blue LEDs are made of gallium nitride tubes produced by NICHIA in Japan. (Typically)TaiwanCrystal element die

C、 The pixel module is a structure that integrates driving and display, with a field type component structure that is waterproof, dustproof, and corrosion-resistant. It adopts a constant current driving method and has overcurrent and overheating protection functions.

D、 The integrated circuits within the display unit are connected in a highly reliable manner to meet the requirements of harsh environments.

5、 Application Function

Ø When there is a power failure or no display content, the display screen should be completely black with no bright spots.

Ø Display information consisting of Chinese characters, English letters, and special symbolsComposed of traffic patterns. It can achieve display effects such as left, right, up, down, left, right, up, down, gradual in and out, horizontal blinds, vertical blinds, etc;

Ø support32×32、24×24、16×16，12×12 sizes of text. Its size, spacing, and color can be adjusted.

Ø Support programs to form playback combinations based on time, week, and special time periods, enabling different list combinations to be played on holidays, Saturdays, and Sundays without the need for multiple settings.

Ø Large variable message signs should be able to provide response signals to instructions issued by computer systems and confirm whether the issued information is displayed truthfully and successfully published. When the monitoring communication station computer polls�Capable of transmitting information on the working status of the variable intelligence board. Including the current program number, page content, temperature inside the box, humidity inside the box, brightness level, equipment operating voltage, current operating current, and other information.

Ø Screen controller supportRS232, RS485, RJ45 communication, serial communication speed support: 2400~57600bps; RJ45 communication adopts TCP/IP and UDP working modes.

Ø control unitconfiguration4MB FLASH drive, capable of managing up to100Program Set，100 image information;

Ø Support the function of playing specific lists offline;

Ø Support insertion and on-demand display of content;

Ø Can achieve remote control of hard screen opening and closing functions;

Ø Equipped with outdoor photosensitive sensors, with manual and automatic functions32Level dimming function;

Ø Mean time between failures of the entire machineMTBF≥50000Hour;

Ø Equipped with lightning protection facilities; When there is induced lightning, it can ensure that the equipment works normally in the specified usage environment, and lightning protection measures are added to both the communication interface and the mains power end;

Ø Controller protection grounding resistance≤4Ω.

6、 Work on Cheng article document

Ø climatic conditions

1 Working environment temperature range-5℃—+60℃

2 Range of humidity in the working environment20%—80%

Ø Working Voltage

Screen working voltage:AC220V±10%50Hz±3Hz.

Ø power supply cable

AC220V power supply cable: 3 * 4 square meters

Ø Control method

Network port control or serial port control

7、 Protective measures

Ø High temperature prevention measures

1 Adopting high brightnessLED lights, with excellent electrical performance and large balance measures for driving components，Only use less than half of its rated driving current; Effectively improve the stability of devices operating under harsh conditions;

2 Under high temperature conditions, turn on the diversion fan to dissipate heatMandatory heat dissipation with IP65 rating.

Ø Dust, moisture, and salt spray prevention measures for display screens

1 The soldering of components adopts wave soldering to ensure soldering quality and avoid virtual soldering; Improve reliability and prevent moisture, cold, dust, and salt spray from affecting the operation of the screen;

2 The selection of connecting wires fully considers the characteristics of working in harsh environments, Adopting high-quality heat-resistant polyvinyl chloride insulated installation wire.

8、 Monitoring system

Ø Brightness monitoring

The usage environment of display screens varies greatlyThe lighting varies in different situations differentThe screen can be set to have automatic light sensing control, and the brightness can be automatically adjusted through a light sensor according to different ambient light conditions,To provide people with the best visual experienceAnd it can achieve green energy conservation.

Ø Temperature monitoring

During the use of the display screenThe remote control station can monitor the temperature of the display screen and reflect the working condition and abnormalities of the display screen at any time based on the temperature situation; It can be set as a temperature abnormality control switch screen; For example, after exceeding a certain temperature, the screen will automatically turn off;

9、 Reliability and maintainability of the system

1、 system reliability：The system equipment is brand new and unused.

2) Using advanced technology, high-quality materials and components, first-class processes, and strict quality management to provide the buyer with products that are technologically advanced, of superior quality, aesthetically pleasing, and fully comply with the quality, specifications, and performance requirements specified in the contract.

3 ) Ensure complianceI S O 9 0 0 0Series Quality Management and Quality Assurance system，Design, procurement, manufacturing, inspection, packaging of the supplied equipment Strict quality control measures are implemented in every stage of installation and other related processes.

Case 1 (Chengdu Underpass Tunnel Project)

Case 2 (Qinghai Yankoushan Tunnel Project of Gongyu Expressway)

Case Three (Nan'an Meihualing Tunnel Project)

Case Four (Nanning Underpass Tunnel Project)

Case 5 (Guizhou Anzhi Expressway Project)