Introduction to the composition and working principle of rfid system

2022-06-29 00:00:00

Radio frequency identification system is applied in intelligent parking lot is common, through this system, when the vehicle into the driveway, the system automatically identify, open the gate, can realize quick in and out of the parking lot, vehicles without parking card like a traditional parking lot system.Radio frequency equipment system is an intelligent and efficient parking management plan.

principle of radio frequency identification system is what?To answer this question, we first look at its system composition, radio frequency identification system generally consists of three parts: the card reader, radio tags and antenna.

1. Also known as reader, card reader is a device used to read information, in the parking lot system, card reader is installed in the location of the parking lot import and export, used to read the label card user information, of course, it can also write information label card.
2. The label card could be called rf label card, role in the system is to store the information, it is composed of coupling components and chips, and the built-in antenna, can communicate with radio frequency antenna.In the parking lot, rf card device in the user’s vehicle, storing user information, when the vehicle into the driveway, card reader can read automatically label card information, opened after the judgment.
3. The antenna is used to pass tag of rf signal between the card and card reader.

know the above equipment, we can understand the working principle of rfid system.Card reader sent via antenna a certain frequency of rf signal, when the device has a label card vehicles entering the transmitting antenna working range, the label card can produce induced current, which is activated, automatic information release out inside the card, card reader receiving signal demodulation and decoding, the label card information, then sent to the backend system related to processing, the background system can judge the legitimacy of the label card and make corresponding treatment according to the judgment.