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Intelligent management of urban traffic is a fundamental solution to the increasingly serious urban traffic problems, and the application of advanced radio frequency identification technology RFID to urban traffic management is an important direction for future traffic informatization construction. Chongqing’s urban intelligent traffic management and service system based on RFID technology, namely “Chongqing Electronic License Plate System”, is to apply RFID technology to the field of intelligent transportation, give full play to its huge advantages of automatic identification and dynamic information collection, and effectively solve the problem of urban traffic information. The bottleneck problem of chemical construction. This project was listed among the first batch of large-scale national informatization application projects by the National Development and Reform Commission. It is the only national informatization project implemented on a large scale in provincial-level regions in the country, and the first electronic license plate application project in the true sense.Application of this project in the field of transportationRFIDThe technology model, mechanism and experience in supporting technology are of significance for reference and promotion throughout the country. Especially the huge in-vehicle network established by relying on the electronic license plate system is a real example of the application of the Internet of Things in the field of transportation. The development of the Internet of Things.
The Chongqing electronic license plate system aims to promote the platformization and serviceization of vehicle-related information in public security, transportation and other systems, with electronic license plates as the information carrier and RFID technology as the basic information collection method to realize the sharing of vehicle-related information resources and improve Information level of vehicle management. The whole system consists of the source layer, base station cluster layer, data layer, support layer and application layer. It adopts passive ultra-high frequency products, uses ceramic electronic tags, and collects information from the electronic tags through the reader base station group. Data is processed and integrated to build a comprehensive vehicle-related information platform to achieve comprehensive applications across industries and departments.
ZTE provides a complete set of RFID products for Chongqing’s electronic license plate system, installed electronic license plates for all 1 million motor vehicles in Chongqing, established an electronic license plate issuance system for nearly 50 vehicle management offices, and established 300 road surface collection points in the main urban area and suburban counties of Chongqing .
A bus with an electronic license plate installed on the vehicle base station
From system design to equipment research and development, ZTE has fully considered the particularities of the transportation field, such as the preparation and identification of vehicles at high speed, the adaptability of the road environment, the coverage control of the electronic license plate communication area, the reliable and safe communication mechanism, and the There are public security, traffic and other system software docking.
How to realize the information collection of high-speed vehicles and ensure seamless coverage in the area is the key to solving the problem of multi-lane free-flow applications.
● High-speed object information collection: In the free-flow environment, the vehicle has a high speed. How to ensure the fast and accurate collection of high-speed moving vehicle information is the basis for the system to work. Through the combination of a number of patented technologies, the Chongqing electronic license plate system can ensure the recognition performance of high-speed moving objects. The unique super processing capability of the base station ensures the fast reading of information, and the air interface rate can reach up to 160kbps forward and 640kbps reverse;
● Stable and continuous coverage in the area: In the case of multiple lanes, the area coverage problem is an important factor affecting information collection. In order to avoid the occurrence of information reading blind areas, the coordinated operation mode (antenna array) of multiple antennas must be adopted, and the interference between the antennas must be avoided, thereby ensuring the continuity of coverage in the area.
● Coordination of various system equipment:Electronic license plateThe system includes a variety of different systems, and the coordination between multiple sets of system equipment is very important, and the integration technology plays a key role here.
The electronic license plate, driver card and electronic license plate constitute the “Chongqing Traffic Information Card” system. The implementation of this project will effectively solve the automatic identification and dynamic monitoring of vehicles, and gradually realize the functions of precise vehicle management, dynamic monitoring of road network, traffic statistics and analysis, dynamic collection of various traffic taxes and fees, travel services and information release of public travel road conditions. , laying a solid foundation for the realization of “unblocked Chongqing”.
● Realize precise vehicle management
This system uses UHF RFIDTechnology, using its advantages in dynamic automatic identification, realizes dynamic automatic identification and management of running vehicles, which can improve the existing static vehicle supervision mode and achieve precise vehicle management. Through vehicle dynamic monitoring, license plate anti-counterfeiting, bayonet monitoring, hit-and-run vehicle tracing, taxi security management, road network dynamic monitoring, traffic flow analysis and inducement control, vehicle safety management, etc., the use and driving behavior of vehicles can be effectively regulated, and vehicle violations can be suppressed. It provides a safe, efficient and harmonious traffic environment for urban development and people’s life.
● Tap the potential of urban roads and improve the efficiency of traffic organization
Using the functions of automatic identification and dynamic information collection of RFID technology, it can dynamically monitor the urban road network and grasp the road traffic conditions in a timely manner, especially accurately grasp the traffic flow status and vehicle distribution of urban traffic congestion bottleneck sections and intersections, so as to implement targeted implementation. Create conditions for macro-induction of urban traffic flow and real-time adaptive control of intersections.
Cities need a large number of reliable statistical data as the basis for their decision-making when planning, constructing, renovating roads, regulating traffic, and formulating relevant policies. The traffic historical data and various classified statistics and quantitative indicators collected through this system are valuable resources for the government and relevant management departments to make decisions. The system provides rich information, detailed classification and easy extraction. The government and relevant management departments can easily and quickly obtain traffic statistical information and reference analysis results, make decision-making more scientific, reduce blindness in planning and construction, maximize the service potential of existing urban transportation facilities, and improve the efficiency of the entire transportation system. management level and operational efficiency.
● Provide travel services and industry application services for motor vehicles
The huge information platform established by this system can be used by all social units to share motor vehicle information resources, so as to popularize UHF RFID-based vehicle identification technology to motor vehicle travel services and industry application services (unit and community access management; management, non-stop charging, etc.), driving the informatization development of related industries.
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