With the rapid development of China's expressways, intelligent traffic management plays an increasingly important role in ensuring safety and improving traffic management efficiency. The traffic information dissemination system is also called a traffic guidance information system and is an important part of the expressway monitoring system. It is an important display method for Intelligent Transportation System (ITS). As one of the forms of intelligent traffic management, the LED variable information board can display various images and texts, inform various traffic conditions and meteorological information, and issue traffic instructions to ensure traffic safety. The displayed images and texts can be programmed and stored in the variable-information-board controller in advance, and can also be compiled and re-released at any time on the computer that controls the variable-intelligence-board.
In the information age and the rapid development of intelligent transportation systems, the release of information has become an important service content in the transportation sector serving the public. Various types of information display equipment have become airports, train stations, docks, bus stations, highways, Expressway service areas, urban roads, parking lots, etc., are the leading means of releasing information to the public. Among them, the LED display is favored for its high brightness, high reliability, long life, low power consumption and other characteristics.
The LED electronic display is an ideal public information display medium for displaying texts, images, two-dimensional or three-dimensional animations, and television, video, VCD, and other video signals. The display technology has a wide range of applications in many areas of social economy. The display of information is one of the important application areas. The LED display is a new type of flat panel display device that appeared in the 1990s. It is a high-tech product integrating optoelectronics, microelectronics, computer technology, and video technology. Its light emitting part consists of LED (light emitting diode) assembly. Its advantages are less power consumption, high brightness, clear images, colorful, long life, and stable performance.
The display surface of the variable information board is generally composed of an LED display array. Each light-emitting unit in the display array is also called a pixel, and each pixel is pressed by a different light-emitting primary (red, green, blue, yellow) LED tube. A combination of certain proportions. The variable information board itself has the functions of display drive, detection and control, and is equipped with a remote communication interface to communicate with the center.
At present, there are two types of display screens commonly used on highways: one is a dual-color display, and the two primary colors are red and green. The 256-level gray scale can display 65,536 colors; the other is a full-color display. For the red, green, and blue primary colors, the 256 grayscale full-color display can display more than 16 million colors.
In order to reduce the frequency of freeway traffic congestion and traffic accidents, improve the operating conditions of the expressway and the existing safety and security systems, and reduce the delays and losses caused by traffic accidents, traffic congestion, and secondary accidents and congestion, the speed should be fully utilized. The role of the highway information release system is to escort highways for safe, high-speed and smooth operation.
Various forms of LED display screens become the main delivery vehicles for traffic guidance information. Common traffic-induced LED display methods include LED display variable information boards, path signs, variable signage signs, and so on. Traffic guidance information outdoor LED display, according to the requirements of road traffic management and the actual situation of traffic guidance information release display, in the specific use of features has the following characteristics: high brightness, reasonable viewing angle; display color mainly red, green, yellow; Display brightness is automatically adjustable; all-weather work, environmental conditions are complex; remote control, intelligent detection; safety, real-time, accuracy, and high reliability.
1, gantry type variable electronic display
The gantry type variable electronic information screen is the main method of information transmission on highways. Because of the large volume, a cross gantry is generally used as a bracket for the variable electronic display screen. The main monitoring computer implements remote control through the communication network, transmits and displays All kinds of graphic and textual information, to the driver in a timely manner to publish different road conditions and various types of traffic information on different sections of the road, and to carry out traffic laws and regulations, traffic knowledge, to reduce highway reproducible obstruction, reduce non-recurring highway accidents Influence, improve the purpose of driving safety; thus effectively channel traffic and improve the efficiency of highway use.
2, variable speed display (board)
Most of the variable speed limit display screens are located in some key road sections with complex road conditions or oversized bridges, and are mostly round or single arm suspension single screens. The computer of the monitoring center implements remote control through the communication network, transmits and displays the speed limit mileage or brief traffic information of the road section, and plays the role of prompting the vehicle to run at a limited speed to ensure traffic safety.
3, mobile traffic information screen
During expressway construction and maintenance, it is very important for highway authorities or construction personnel to temporarily close or change lanes. It is important to inform the road users of traffic information. Fixed variable information boards are limited by the fact that the road construction site is indefinite or has a long distance and is not easy to function. The mobile traffic information screen (vehicle screen) is small, flexible, lightweight, suitable for installation on trailer-mounted vehicles, and can be directly displayed at the target site anytime, anywhere to make up for the lack of fixed variable information boards.
4, guide refers (police) screen
In order to ensure the safety of highway construction workers and vehicles and other vehicles in normal operation, expressway work vehicles must install prominent high-brightness signs to warn and guide follow-up vehicles to avoid accidents. The guide warning screen is the necessary equipment for construction work vehicles on the highway.
5, service display
The service LED display refers to the LED equipment provided by the toll station area and service area to provide various services and publicity. Through the toll plaza, service area parking lot, indoor installation of various types of LED display in a timely manner for the past passengers and drivers to provide real-time traffic conditions and service help and other information, to facilitate the passengers and staff to travel, improve the management level of the road and the external image .
6. Conclusion
The expressway LED information release system not only enhances the speed and safety of highway operations, but also enhances operational efficiency, and more importantly, it has achieved good social benefits. It is believed that with the continuous increase of the mileage of highways throughout the country, and the continuous improvement of computer technology and continuous improvement of highway monitoring technology, the system will play an increasingly important role on the expressway.
In the information age and the rapid development of intelligent transportation systems, the release of information has become an important service content in the transportation sector serving the public. Various types of information display equipment have become airports, train stations, docks, bus stations, highways, Expressway service areas, urban roads, parking lots, etc., are the leading means of releasing information to the public. Among them, the LED display is favored for its high brightness, high reliability, long life, low power consumption and other characteristics.
The LED electronic display is an ideal public information display medium for displaying texts, images, two-dimensional or three-dimensional animations, and television, video, VCD, and other video signals. The display technology has a wide range of applications in many areas of social economy. The display of information is one of the important application areas. The LED display is a new type of flat panel display device that appeared in the 1990s. It is a high-tech product integrating optoelectronics, microelectronics, computer technology, and video technology. Its light emitting part consists of LED (light emitting diode) assembly. Its advantages are less power consumption, high brightness, clear images, colorful, long life, and stable performance.
The display surface of the variable information board is generally composed of an LED display array. Each light-emitting unit in the display array is also called a pixel, and each pixel is pressed by a different light-emitting primary (red, green, blue, yellow) LED tube. A combination of certain proportions. The variable information board itself has the functions of display drive, detection and control, and is equipped with a remote communication interface to communicate with the center.
At present, there are two types of display screens commonly used on highways: one is a dual-color display, and the two primary colors are red and green. The 256-level gray scale can display 65,536 colors; the other is a full-color display. For the red, green, and blue primary colors, the 256 grayscale full-color display can display more than 16 million colors.
In order to reduce the frequency of freeway traffic congestion and traffic accidents, improve the operating conditions of the expressway and the existing safety and security systems, and reduce the delays and losses caused by traffic accidents, traffic congestion, and secondary accidents and congestion, the speed should be fully utilized. The role of the highway information release system is to escort highways for safe, high-speed and smooth operation.
Various forms of LED display screens become the main delivery vehicles for traffic guidance information. Common traffic-induced LED display methods include LED display variable information boards, path signs, variable signage signs, and so on. Traffic guidance information outdoor LED display, according to the requirements of road traffic management and the actual situation of traffic guidance information release display, in the specific use of features has the following characteristics: high brightness, reasonable viewing angle; display color mainly red, green, yellow; Display brightness is automatically adjustable; all-weather work, environmental conditions are complex; remote control, intelligent detection; safety, real-time, accuracy, and high reliability.
1, gantry type variable electronic display
The gantry type variable electronic information screen is the main method of information transmission on highways. Because of the large volume, a cross gantry is generally used as a bracket for the variable electronic display screen. The main monitoring computer implements remote control through the communication network, transmits and displays All kinds of graphic and textual information, to the driver in a timely manner to publish different road conditions and various types of traffic information on different sections of the road, and to carry out traffic laws and regulations, traffic knowledge, to reduce highway reproducible obstruction, reduce non-recurring highway accidents Influence, improve the purpose of driving safety; thus effectively channel traffic and improve the efficiency of highway use.
2, variable speed display (board)
Most of the variable speed limit display screens are located in some key road sections with complex road conditions or oversized bridges, and are mostly round or single arm suspension single screens. The computer of the monitoring center implements remote control through the communication network, transmits and displays the speed limit mileage or brief traffic information of the road section, and plays the role of prompting the vehicle to run at a limited speed to ensure traffic safety.
3, mobile traffic information screen
During expressway construction and maintenance, it is very important for highway authorities or construction personnel to temporarily close or change lanes. It is important to inform the road users of traffic information. Fixed variable information boards are limited by the fact that the road construction site is indefinite or has a long distance and is not easy to function. The mobile traffic information screen (vehicle screen) is small, flexible, lightweight, suitable for installation on trailer-mounted vehicles, and can be directly displayed at the target site anytime, anywhere to make up for the lack of fixed variable information boards.
4, guide refers (police) screen
In order to ensure the safety of highway construction workers and vehicles and other vehicles in normal operation, expressway work vehicles must install prominent high-brightness signs to warn and guide follow-up vehicles to avoid accidents. The guide warning screen is the necessary equipment for construction work vehicles on the highway.
5, service display
The service LED display refers to the LED equipment provided by the toll station area and service area to provide various services and publicity. Through the toll plaza, service area parking lot, indoor installation of various types of LED display in a timely manner for the past passengers and drivers to provide real-time traffic conditions and service help and other information, to facilitate the passengers and staff to travel, improve the management level of the road and the external image .
6. Conclusion
The expressway LED information release system not only enhances the speed and safety of highway operations, but also enhances operational efficiency, and more importantly, it has achieved good social benefits. It is believed that with the continuous increase of the mileage of highways throughout the country, and the continuous improvement of computer technology and continuous improvement of highway monitoring technology, the system will play an increasingly important role on the expressway.
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