RFID radio frequency identification is a non-contact automatic identification technology. It automatically recognizes target objects and acquires relevant data through radio frequency signals. The identification work can be performed in various harsh environments without manual intervention. RFID technology can recognize high-speed moving objects and recognize multiple electronic tags at the same time. It is quick and convenient to operate and is frequently used in supermarkets.
Tag: consists of a coupling element and a chip. Each RFID tag has a unique electronic code attached to the object to identify the target object, commonly known as an electronic tag or a smart tag.
RFID electronic tags: active tags, passive tags, semi-active semi-passive tags.
RFID working principle: After the tag enters the magnetic field, it receives the RF signal from the reader, and sends the product information (Passive Tag, Passive Tag or Passive Tag) stored in the chip by the energy obtained by the induced current, or actively sends a certain The frequency signal (Active Tag, active tag or active tag); the reader reads the information and decodes it, and sends it to the central information system for data processing.