VMS(DMS/CMS)


VMS (Variable Message Signs), is also known as DMS (Dynamic Message Signs) or CMS (Changeable Message Signs).
VMS is an important part of Intelligent Transportation Systems (ITS). They are in the form of LED displays that often installed on the roadside or above.
VMS can assist traffic managers in scientific and efficient traffic management. Traffic guidance can be provided by timely release of the latest traffic-related information. It can help drivers and passengers to know the traffic conditions in advance so that reasonable choices can be made earlier, such as choosing a more expedited route to avoid traffic jams. The use of a large number of VMS can improve the traffic management efficiency, improve traffic conditions, and raise road pass through capacity. It has played a positive role in reducing traffic congestion, decreasing exhaust emissions, lowering the incidence of traffic accidents, and improving traffic safety.

Detailed Description

Reliable, Intelligent and Safe System 


● Support to display monochrome, tri-color, multi-color and RGB full colors.


● Support multi-lingual characters (including Arabic), symbols, pictures, graphics, animations and videos etc.


● Can dynamically display notifications, messages, traffic signs, warning signs, guide maps, LOGO, time, 

   temperature, weather, etc., as well as pictures, animations, videos for promotion.


● Easy connection, support LAN, WiFi, 4G and other wireless methods.


● Support customized protocols, (DGT, etc.)


● Comply with GB/T 23828-2009 and other standards.



● Reliable: 


— Adopt high-quality and high-brightness LED, high-efficiency and high-temperature resistant Meanwell power supply, industrial-grade 

    mainboards and components, derating use on parameters, leaving enough margin to ensure long-term stability and reliability.


— Adopt an all-weather design and use AkzoNobel's powder coating to withstand harsh weather conditions and ensure long-lasting durability.


— For thermal management, we have a complete and comprehensive design: use high-brightness LED, high-efficiency power supplies and 

    low-voltage supply to reduce the heat productivity inside the cabinet; use light-colored cabinets with double-layer design to reduce the 

    solar radiation impact; use an optimized design of fan-forced cooling system to accelerate the heat dissipation inside the cabinet. These 

    comprehensive measures will reduce the temperature rise of the VMS, improve the reliability, and reduce the light decay of the LED.


— With N+1 power supply backup. When the power supply fails, the backup power supply will seamlessly take over and notify the control center.    


— With bi-directional data transmission technology. When the data cable between any two cabinets is disconnected, the data can still remain 

    ongoing transmission and avoid displaying interruption thanks to the bi-directional transmission technology.


● Intelligent:


— Intelligent power distribution function: step-by-step power up, reducing the impact on the power supply lines.


— Intelligent full monitoring capability: detect LED failures, monitor door status, power supply, fan, dust filter, internal temperature, 

    ambient temperature, etc., and have a long-term preservation for the log records in the control center database.


— Intelligent brightness adjustment function: based on the real-time monitoring of ambient brightness, proceed 

    non-linear automatic dimming control (automatic mode).


— Powerful software for traffic information management knows everything about the running status of the VMS. When the display 

    content is updated, the LED is faulty, or the monitoring status is abnormal, it will feed back to the control center and send SMS to 

     the operator, even if the operator is not at the control center, he can also know the running status of VMS in time.


— Intelligent alarm function: Users can preset the temperature value for the alarm, brightness down, display off and power off. 

    The VMS will carry out the corresponding actions according to the monitored temperature value.


● Safe:


— VMS has surge protection, leakage protection and other safty measures


— High temperature protection function: When the VMS temperature exceeds the set value, it will take the corresponding 

    actions of alarm, brightness down, display off or power off, timely proceed the high temperature protection to ensure the 

    safety for the VMS and prevent the occurrence of fire.


— Traffic information management software, with login password protection function, unauthorized person can not 

     operate the software and VMS; encrypted communication between the management software and VMS, illegal softwares 

     are forbidden to control the VMS, to ensure the VMS operation of high security and accuracy.



          



General Technical Specifications
Display type
Text, symbol, picture, graphic, logo, mark, animation, video, etc.
Color displayed Monochrome, tri-color, multicolor and RGB full colors*
Pixel pitch
10mm, 12mm, 14mm, 16mm, 20mm, 25mm 31.25mm etc.*
Pixel configuration
1R1G1B etc*
Resolution(HxW)
Customized* 
Brightness(cd/㎡)
Red:3100;  Green:3770;  Blue:1240;  Yellow:7440; White:12400  (L3, according to EN12966, customized.)
Contrast ratio
R2(according to EN12966)
Viewing angle (degree)
H30/V30(B7, according to N12966)*
Controller
Industrial-grade embedded control board with 32-bit ARM processor.
LED color
C1(according to EN12966)
Driving IC
With pixel detection function
IP level
Front IP65 Rear IP54  (P2, according to EN12966)*
Brightness control
Auto/Manual/Timing
Brightness adjustment 256 levels
Communication options RS232, RS422/485, GPRS, 4G, Ethernet, TCP/IP via RJ45 (default)
Protocol Protocol customizable (DGT, etc.)*
Working temperature
-25℃ to +60℃  (T1,T2 according to EN 12966)*
Humidity range
RH﹤95%(non-condensing)
Power requirements
120 or 240 VAC
Average LED lifetime
100000 hours


Remarks: for any detailed or customized solution, please do feel free to contact us directly (sales@comsight.cn).




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