RFID tag， Radio frequency identification tags are electronic tags that are attached to the item to be identified, and each electronic tag has a unique electronic code. RFID technology is a non-contact automatic identification technology that automatically identifies target objects and obtains relevant data through radio frequency signals, without the need for manual intervention, and can work in various harsh environments. RFID tags are composed of coupling elements and chips, each tag has a unique electronic code, high-capacity electronic tags have user write areas, and are attached to objects to identify target objects. The basic working principle of RFID technology is not complicated. Based on the mutual inductance phenomenon in electromagnetic induction, when the tag enters the magnetic field, it receives the RF signal emitted by the reader, and uses the energy obtained by the induced current to send the product information stored in the chip, or actively sends a signal of a certain frequency; After the interpreter reads and decodes the information, it is sent to the central information system for relevant data processing.
