Using the technical characteristics of RFID, such as high-precision identification, high-precision collection and high sensitivity, electronic license plate labels are installed on motor vehicles as the carrier of vehicle information, and the data on various motor vehicle electronic license plates are collected or written when passing through the sections equipped with authorized RFID readers, so as to achieve the purpose of comprehensive traffic management.
This new technology can break through the bottleneck of the original traffic information collection technology, realize the classified collection and accurate collection of vehicle traffic information, and grasp the key of accurate information source of traffic control system.
Extended data:
Working principle of automobile electronic identification;
When a vehicle with an electronic license plate passes through a bayonet, an important intersection or a place where roadside units are installed, the UHF electromagnetic wave emitted by the card reader is received by the electronic license plate and converted into electric energy, and the chip starts to work. After verifying the identity of the card reader, the chip sends the required information back to the card reader, and finally the card reader sends the information back to the command center.
According to the current national standard, the accurate reading rate can reach 99.95% when the vehicle is driving below 120 km. However, the actual test shows that when the vehicle is driving at 240 km/h, the card reader can accurately read the data of the electronic license plate .. 12m refers to the distance between the card reader and the vehicle.
Baidu encyclopedia-automotive electronic signs
Baidu encyclopedia-electronic license plate