The basic working principle of RFID technology is not complicated: after the tag enters the reader, it receives the RF signal sent by the reader and uses the energy obtained by the induced current to send out the product information stored in the chip (passive tag, passive tag or passive tag). ), Or the tag actively sends a signal of a certain frequency (Active Tag, active tag or active tag), after the reader reads the information and decodes it, it sends it to the central information system for related data processing.
A complete RFID system is composed of a reader, an electronic tag, a so-called transponder, and an application software system. Its working principle is that the reader emits radiofrequency energy of a specific frequency for The driver circuit sends out the internal data. At this time, the Reader receives the decoded data in order and sends it to the application for corresponding processing.