Three Key Technologies of Electronic Toll Collection System_ Taigewang Technology
The electronic toll collection system is often referred to as etc (Electronic Toll Collection). It uses radio frequency identification technology, installs a card reader in the toll station, and installs a radio frequency card in the vehicle, so that the toll station can identify the vehicle within a certain range, and automatically deduct the corresponding fees from the pre bound IC card or bank account without parking payment. It is widely used in highway toll and road and Bridge (tunnel) toll because it does not require manual toll collection and parking card swiping. There are three key technologies to realize the non-stop charging system: identification technology, data transmission and database management, which are described in detail below. In addition, as an aside, the key of the electronic non-stop charging system is charging, not non-stop. 1. The vehicle identification electronic non-stop charging technology adopts radio frequency identification technology. This set of vehicle identification system is composed of card reader and radio frequency card. The card reader is installed in the toll station, and the vehicle is equipped with radio frequency card. They exchange data through wireless for identification. Some people will ask, what if the RF card is dead and can't be identified? Don't worry about this, because the RF card adopts a passive RF card without power supply. It can convert microwave energy into working energy through inductive coupling. 2. Data transmission security is the key to data transmission. In the process of vehicle identification, that is, the data acquisition stage, the transmission speed of RF technology is very fast, only a fraction of a second, and due to microwave radiation and low frequency, it is still guaranteed in terms of safety. In the process of transmitting data to the data center, we adopt the way of special line encryption to ensure the security of data transmission. 3. Database management in the non-stop charging system, the data center has two parts: the system data management unit and the bank data management unit. The system data unit is mainly used to manage vehicle related data collection, cost calculation, system security management, vehicle toll splitting, related report management, etc; The bank data management unit is mainly responsible for handling co branded cards with on-board RF cards, withholding tolls and other services. The management of the database is quite complex. Let's briefly say here that the non-stop charging system adopts the prepayment method. Users need to store the fees in the RF card, which will be automatically deducted in the card when passing through the toll station. At the same time, it can also be bound with bank cards and credit cards to consume in advance. The system will reconcile with the bank regularly.