LED display in the outdoor application, has been very mature, LED display is often used in the square, aviation, highways, stage and other fields, recently, LED display in the security industry has also been further development and use; and LED screen In the traffic on the application, has always occupied the leading position, outdoor traffic induced full-color LED screen needs of the general which:
1, high brightness, reasonable view of the road traffic guidance information is mainly issued for the road on the driving vehicle, the display of the viewing angle is not high, in the city on the road generally reach ± 35 ° or so. Traffic induction outdoor LED display 24 hours continuous work. In the case of direct sunlight on the surface of the display, the display should be clearly visible, so a higher brightness is required. Under normal circumstances, the visual distance is about 200m.
2, the display color to red, green and yellow-based traffic information is mainly for the dynamic driving of the vehicle, driving vehicles in the visual distance of the residence time is very short, so should avoid the use of complex multi-gray graphics and animation Content, display content mostly text and simple graphic logo. Taking into account the commonly used color of the traffic sign signal, usually use red, green, yellow three-color display. Red, green, yellow three clock colors can be displayed prohibited, indicating the recommendations and warning information.
3, the display brightness automatically adjustable traffic induction information outdoor LED display 24 hours a day work, environmental illumination changes are very large. It is necessary to ensure that the display in the sunny day maximum ambient illumination is clearly visible, but also to avoid the rainy days and night "glare" phenomenon, LED display brightness needs to be automatically adjusted according to environmental illumination. Under normal circumstances, traffic induction outdoor LED display brightness adjustment should be more than 8 level.
4, all-weather work, environmental conditions, complex traffic-induced LED display in full outdoor conditions, the environment is complex, in temperature, power supply, rain, moisture, corrosion, lightning protection and other requirements of complex, High reliability, which need to take specific targeted measures. In the traffic guidance information outdoor LED display structure design, we should pay attention to the display body cooling, waterproof and dust and other issues. The display unit structure of the display panel shall comply with the IP65 degree of protection.
5, remote control, intelligent detection traffic LED display installation location distribution in a larger area, generally controlled by the remote control center. The daily maintenance and detection of the display more difficult, it must have the appropriate remote control and fault diagnosis, detection function. The general temperature of the box should be able to automatically detect and adjust the LED in the appropriate temperature range to work to ensure that the display life.
6, security, real-time, accuracy, reliability requirements High traffic guidance information for public release, real-time, accuracy and reliability requirements are higher. In order to ensure traffic stability and reliability of LED display work in the display control system, software. LED pixel tube, integrated circuit selection and quality requirements should be stable and reliable.
At the same time, traffic-induced LED display generally work in the network environment, the public information release, the security also has a higher demand. Traffic-induced LED display mainly from the location of the placement, display the color, LED display brightness, remote requirements, security, real-time, accuracy, reliability and other aspects of the main consideration