The application of LED display in intelligent transportation
1, high brightness, reasonable perspective
Induced road traffic information release is mainly for road vehicles, to display the view request is not high, on the city roads reached around + 35 ° commonly can. Traffic induced?outdoor LED display continuous working 24 hours a day. In direct sunlight on the surface of the display case, show the content should be able to clearly visible, therefore, need to have a higher brightness. Normally visible distance requirements at about 200 m.
2, display color is given priority to with red, green and yellow
Traffic information release is mainly geared to the needs of dynamic driving the vehicle, driving the vehicle within visual range of the residence time is very short, so should avoid to use more complex gray graphics and animation content, display content for text and simple graphics symbol. Considering the commonly used color, traffic signal usually USES red, green and yellow color display. Red, green, Huang Sanzhong color respectively according to ban, suggestion and warning information, etc.
3, automatic screen brightness is adjustable
Traffic induced information outdoor LED display working 24 hours, environment illumination change is very big. Is intended to ensure that the display in the sunny day, one hundred days when environment illumination is clearly visible, and to avoid on a rainy day and night “glare” phenomenon, the brightness of the LED display need to be able to automatically adjust according to environment illumination. In general, traffic induced outdoor LED display brightness automatically adjust should be more than 8.
4, the all-weather work, complex environment conditions
Traffic induction LED display under the condition of completely outdoor work, complex environmental condition, the temperature, power supply, waterproof, moistureproof, anticorrosion, meet the requirements of the lightning protection is complex, and requires high reliability, which need special targeted measures. In the induced traffic information in the design of the structure of the outdoor LED display, to focus on the screen body heat, waterproof and dustproof. Display unit housing structure design should conform to the requirements of the IP65 protection class.
5, remote control, intelligent detection
Traffic induction LED display installation location distribution within the scope of the larger area, general remote control by the control center. To display the daily maintenance and testing is difficult, so must have a corresponding remote control and fault diagnosis, detection function. The general body temperature should be able to automatically detect and adjust, the LED to work in the appropriate temperature range, ensure the service life of the screen.
6, safety, real-time, accuracy, high reliability requirements
Traffic induced released to the public information, real-time, high accuracy and reliability requirements. In order to ensure the stability and reliability of traffic induced LED display, the display control system, software. LED pixels, selection of integrated circuit and so on, and should be given priority to with stable and reliable quality. At the same time, the induced traffic LED display generally work under the network environment, public information release, also has higher requirements for safety.
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