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1. Application background:
The radio frequency automatic identification toll collection system (ETC) is currently the most advanced road and bridge toll collection method in the world. Through the special short-range communication between the electronic tag installed on the windshield of the vehicle and the microwave antenna on the ETC lane of the toll station, the computer networking technology is used for background settlement processing with the bank, so that the vehicle can pass the road and bridge toll station without stopping. The purpose of paying the fee.
ETC is particularly suitable for use in highways or bridges and tunnels with heavy traffic. The implementation of non-stop toll, on the one hand, can allow vehicles to pass through at high speed (tens of kilometers to more than 100 kilometers). Compared with the traditional manual toll ticketing in 8 seconds, the non-stop toll greatly accelerates the capacity of expressway toll crossings. It is estimated that compared with manual toll lanes, the capacity of ETC lanes will increase by 4-6 times, which can reduce the waiting in line for vehicles at the toll gates caused by actions such as paying tolls and changing change. On the other hand, the electronic toll collection of highways can reduce the cost of toll management and improve the operating efficiency of vehicles. At the same time, it will also greatly reduce the noise level and exhaust emissions at the toll gates and prevent a few illegal toll collectors from embezzling tolls. , Reduce national losses. Compared with the original manual charging and manual computer charging, the implementation of non-stop toll has obvious advantages. It not only greatly improves the environmental pollution caused by dense vehicles on the road, reduces vehicle congestion, and makes driving safer. More importantly, it will greatly improve the efficiency of bridge toll collection.
2. Advantages of passive radio frequency card (electronic label)
(1) Non-contact. There is no mechanical contact between the passive radio frequency card and the reading and writing equipment, and there is no mechanical damage. There are no sockets for reading and writing equipment (fully sealed), which can adapt to harsh environments such as dust and humidity, with high reliability and long service life.
(2) The response speed is fast. The information exchange of ordinary magnetic cards is only 1~2kb/s, while the information exchange speed of radio frequency identification cards is milliseconds, which supports card reading in high-speed movement.
(3) Good security and confidentiality. Ordinary magnetic cards will lose information when they are interfered by a strong magnetic field, and the information is easy to be stolen, tampered with or forged. Radio frequency identification cards use memory to record information and are not affected by magnetic fields. There is a dedicated circuit module in the card, which can be used for password calculation and two-way password authentication, and has good data security and confidentiality performance.
(4) It can be operated offline. The inductive IC card has good security and confidentiality. It can be used on a network line or can be operated offline from the computer network to avoid network overhead.
(5) Small size, convenient for various packaging forms, and much cheaper than active cards.
3. System composition:
According to its functions, the radio frequency automatic identification non-stop toll system can be divided into automatic identification control subsystem, automatic judgment subsystem, data acquisition subsystem, vehicle detection subsystem, closed circuit television subsystem and signal control subsystem.
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| Fourth, the installation instructions of the electronic label on the vehicle management system | |||||||
The best position of the electronic label: If the antenna is installed on the right side (driver’s side), the label should also be affixed to the right side of the car’s windshield (position A, E). If the antenna is installed directly above the lane, the label should be affixed near the center line of the rearview mirror or windshield of the car (position B, F). If the antenna is installed on the left side (the driving side), the label should also be affixed to the left side of the windshield of the car (position C, D). Label installation when the car front windshield is equipped with a metal film:
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