RFID tags, also known as radio frequency tags, transponder, data carrier; The reader is also called a readout device, a scanner, a reader, a communicator, and a reader (depending on whether the RFID tag can overwrite data wirelessly). The space (contactless) coupling between the RFID tag and the reader is realized through the coupling element, and in the coupling channel, the energy transfer and data exchange are realized according to the temporal relation.
Electronic tags are a tool to improve the efficiency and accuracy of recognition, which will completely replace the barcode. RFID Radio Frequency identification is a non-contact automatic recognition technology, which automatically identifies target objects and obtains relevant data through the RF signal, and can work in all kinds of bad environment without manual intervention. RFID technology can identify high-speed moving objects and can identify multiple labels at the same time, Operation Fast and convenient. RFID tag is a breakthrough technology: "First, you can identify a single very specific object, rather than as a bar code can only identify a class of objects; second, it uses radio RF, can read data through external materials, and bar code must rely on laser to read information; third, You can read multiple objects at the same time, and the bar code can read only one by one. In addition, the amount of information stored is very large. ”