After the tag enters the magnetic field, it receives the radio frequency signal from the reader, and uses the energy obtained by the induced current to send the product information (Passive Tag, passive tag or passive tag) stored in the chip, or the tag actively sends a certain frequency Signal (Active Tag, active tag or active tag), after the reader reads and decodes the information, it is sent to the central information system for relevant data processing.
A complete RFID system is composed of three parts: the reader (Reader), the electronic tag (TAG), the so-called transponder (Transponder), and the application software system. Its working principle is that the Reader transmits a specific frequency. The radio wave energy is given to the Transponder to drive the Transponder circuit to send out the internal data. At this time, the Reader receives and interprets the data in sequence and sends it to the application for corresponding processing.
