The principle and application scope of RFID card reader

RFID card reader is one of the RFID radio frequency identification devices, which has a wide range of applications.custom RFID card ， It can be seen everywhere in our daily life. For example, when we take the bus and swipe the card, the moment we punch in the door, and the moment we borrow books from the library. At this time, we all need an electronic label card, and the function of the RFID card reader is to read the data of this card and return relevant information.


The working principle of the RFID card reader is: through the electromagnetic coupling reaction, when the tag enters the magnetic field, it receives the signal sent by the reader, and uses the energy obtained by the induced current to send the data stored in the tag to the reader, and then the reader reads the data. After fetching and decoding, it is submitted to the server for data processing and the result is fed back to the tag for re-storage.


As a hardware device of the underlying architecture of the physical layer, the RFID card reader not only needs to obtain the data of all physical and virtual "things", but also needs to filter the huge data and send it to the RFID system for processing, which is an indispensable part of the RFID system.

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