In the related applications of LED display technology, public display of road traffic information for the public is one of the important application fields. Among the public transport guidance information release modes, the common information disclosure modes in daily life include road traffic guidance screen, urban traffic guidance screen, parking guidance screen and road change information indicator. These different release modes of traffic guidance information will be displayed in real time according to relevant traffic road management requirements and the actual situation of road traffic information.
1、 Characteristics of intelligent transportation system: intelligent transportation system is actually a road traffic information communication system based on system integration, electronics, communication, information service and other new technologies. At present, it has penetrated and applied to new transportation systems in the fields of aviation, water transportation, railway transportation, urban traffic guidance, expressway, subway and railway transportation. The construction of intelligent transportation system can not only improve the traffic capacity of road network and road traffic information service level, but also have a variety of application prospects in the field of environmental protection, such as reducing exhaust emissions and improving energy efficiency.
In the process of intelligent transportation system construction, the construction and application of intelligent transportation information service system is the main content of the development of intelligent transportation field. The design and construction of public oriented advanced transportation information service system is the due significance and development trend of intelligent transportation system. The intelligent transportation information service provided by the intelligent transportation system focuses on many types of vehicles or other transportation fields.
Intelligent transportation information service system has a variety of transportation application fields. There are not only variable information bulletin boards, variable speed limit signs and road traffic information service systems for Expressway applications, but also traffic guidance systems, traffic management information integrated service systems and road traffic information disclosure systems for urban traffic applications.
In the practical application field of intelligent transportation, real-time traffic information release of urban or road is the main performance of intelligent transportation information service. In other words, traffic information is released in real time through various information display devices. Most of them are more general and general display devices, including LED display screen, LCD display screen, DLP display screen, etc. With the development of embedded technology, intelligent transportation information display system has developed into a comprehensive system with function expansion, multimedia technology and network connection.
2、 Characteristics of LED display: with the continuous development of LED display technology, LED display equipment products are widely used in the field of intelligent traffic information display, and have become the mainstream display mode of modern traffic information display. The field of intelligent traffic information display requires that the corresponding traffic information display equipment products can display the current actual road traffic information in real time according to the road traffic management requirements and traffic guide information. LED display equipment products have the following characteristics in practical engineering application scheme:
1. LED display has high brightness and reasonable viewing angle. The release of road traffic guidance information is mainly for road traffic participants, generally driving vehicles, so the visual requirements for product marks are not high. For the front of the direct sunlight display, the display screen of the display product must maintain a certain clear visibility, so the brightness of the display product must be high.
2. LED shows that the product can work continuously and adapt to a variety of environmental conditions. The workshop of LED display screen guided by traffic information is generally under field conditions, so the relevant external environment is complex and changeable. The environmental requirements of the workshop for high temperature, low temperature, rainfall, environmental humidity, air quality, extreme weather, etc. should be considered. This needs to greatly ensure the stability and reliability of traffic information display.
3. The LED display screen can be monitored remotely for intelligent detection. Due to the use requirements of the actual scene, the installation position of LED display screen for publishing traffic information is usually distributed in a large area. In this case, the traffic management control center usually needs to properly monitor individual LED display products on site. Through remote control, it can facilitate the daily maintenance and environmental test of LED display screen, and save resources at the same time.