The new application of the LED electronic screen system under the intelligent traffic in "LED electronic screen drives the development of traffic intelligence". The LED electronic screens on highways and urban roads are basically the same. , It can announce the weather, traffic conditions, and traffic distribution to drivers in real time. Expressway speeding is an important cause of accidents, and the speed limit changes dynamically with the weather environment. She said that she is currently cooperating with the Ministry of Public Security on a project to study variable speed limit. There is a set of theories and methods behind it, but it will be displayed on the LED in the end.
She believes that the combination of highway traffic LED electronic screens and weather is a new field, and what is used is the mature technology of urban roads. In this regard, she hopes to combine the application of urban roads to get some new applications for highways. Liu Jing, general manager of the ITS Research Center of Beijing Guangke Intelligent Transportation System Integration Co., Ltd., said that the intelligent transportation industry is a relatively special industry. In the past, the development of the transportation industry was often based on the technological development of other industries.
Just like the development of high-definition video LED electronic screen technology in 2009, it has driven the development of video surveillance and electronic inspection of the entire video system in the transportation industry. So this made her feel that maybe the electronic screen industry will lead the transportation industry in the future. She focused on the LED electronic screen system related to LED electronic screens in intelligent transportation.
According to reports, the basic process of urban road traffic intelligent LED electronic screen system is to first collect data or sense acquisition, the second step is to do data processing and analysis, and finally send the data to the carrier. Carriers are becoming more and more diverse, including LED electronic screens, which are called VMS information release systems in the transportation industry. Its positioning is to perceive the traffic environment in an all-round way, obtain dynamic monitoring of the operation status of the entire road, provide professional and comprehensive data support, and provide a guarantee for a comprehensive grasp of the traffic operation status.
For traffic managers, it can provide technical support for the efficient coordination of command and dispatch at the micro level; at the macro level, it includes providing decision support for the introduction of traffic management policies, and providing timely and accurate travel information services for the public. In her opinion, the intelligent LED electronic screen system for urban road traffic is a mature field, but now new technologies and new application directions are being considered. New technologies such as big data and cloud computing.
Due to the acceleration of the motorization process, the contradiction between the supply and demand of parking facilities has been exacerbated in the short term. The urban parking LED electronic screen system has gradually increased attention in recent years. Parking information collection methods include RFID radio frequency, geomagnetism, smart meter, POS machine, video, ultrasonic, IC card, infrared, etc.
The parking LED electronic screen is equipped with three levels of LED electronic screens, which are respectively, first level: main road; second level: surrounding roads of the parking lot; third level: entrance of the parking lot. She believes that although the parking LED electronic screen system has a demonstration application one or two years earlier, it still belongs to a new field. No matter it is radio frequency, or other acquisition technologies and payment technologies, some new technologies need to be used to solve new application problems.
The sustainable development of smart electronic screens and smart cities cannot be neglected. According to data, as of 2013, the penetration rate of smart phones exceeded 50%, but compared with the 100% penetration rate of electronic screen products, it can be said to be ubiquitous. Therefore, Lin Yandan believes that LEDs will enter the Internet of Things system and intelligent system in the future, and it will create more infinite possibilities. She pointed out that the system of smart electronic screens is not just at the device level, but the cooperation of the three from the application layer to the network layer to the perception layer.
The first is the perception layer, such as the terminal of the smart car system, without the perception layer, it cannot be called an intelligent system. The second is the network layer. The collected data of the perception layer is exchanged through the network layer, and finally a good policy judgment can be made. But it must be based on the application layer, otherwise, no matter how much data is transmitted to the network layer, no matter how many perception layers there are, the intelligent system supported by people cannot be formed.
However, Lin Yandan said, "I feel that so far, the smart electronic screen is far from being achieved. Through artificial control, the required preset scenes can be achieved. Although the degree of intelligence has developed to a relatively high level, as a Intelligent cities, that is, on the basis of the interaction and scenes of lights, there are not many electronic screens that can realize this kind of electronic screen by itself." She believes that so far, the car electronic screen has achieved the highest degree of intelligence.
According to his introduction, the terminals of the domestic intelligent road electronic screen system can now use street lights for feedback and interaction. In fact, in the smart road electronic screen system of the entire transportation system, cars should also be used as the largest interconnection terminal. Because a car can move like a mobile phone, it is the most important smart terminal.
The street light pole can also be used as one of the receiving terminals. When street light poles, traffic signals, smart LED electronic screens, and even accessories such as fire hydrants around the road, that is, everything on the transportation system are integrated into an intelligent system, an intelligent system with global network coverage can be realized. Lin Yandan, a professor at Fudan University, shared her insights on "smart electronic screens and intelligent transportation". When talking about what is meant by "smart electronic screens", she first introduced two cases: In 2014, when the fleet of leaders of APEC economies arrived at the Water Cube , after passing a specially designed road, the "rainbow road surface" and "lighting red carpet" paved with lights form different atmospheres.
In the eyes of ordinary people, this design looks very "smart". "The system of smart electronic screens or the system of smart cities is always the same. It requires the integration and intersection of all disciplines. Everyone should be the most professional in their own field. The smart system implemented is the most complete and the most Sustainability." Lin Yandan believes, "Smart electronic screens, like smart cities, need to give full play to their best advantages from the application layer, network layer, and perception layer, and pay attention to the basics. Only in this way can smart LED electronic screens and smart cities be realized. Continuous development.
"Another case is the indoor intelligent LED electronic screen project of a pizza restaurant in Shanghai. It can control the lighting through the iPad mobile client. The control method is the lighting preset scene and the on-site mobile terminal. Therefore, this project is also called in publicity: This is a smart LED electronic screen. .