Radio Frequency Identification (RFID) is an acronym for Radio Frequency Identification.
The principle is the non-contact data communication between the reader and the tag to achieve the purpose of identifying the target. The application of RFID is very wide, typical applications are animal chip, car chip immobilizer, access control, parking lot control, production line automation, material management.
Radio Frequency Identification (Radio Frequency Identification, RFID) is a kind of automatic identification technology. It conducts non-contact two-way data communication through radio frequency, and uses radio frequency to read the recording medium (electronic tag or radio frequency card). It is considered to be one of the most promising information technologies in the 21st century to achieve the purpose of identifying objects and data exchange.
Radio frequency identification technology does not contact fast information exchange and storage technology through radio waves, combines data access technology through wireless communication, and then connects to the database system to achieve non-contact two-way communication, thus achieving the purpose of identification, for data exchange, A very complex system is connected in series. In the identification system, the reading, writing and communication of electronic tags are realized through electromagnetic waves. According to the communication distance, it can be divided into near field and far field. For this reason, the data exchange method between the read/write device and the electronic tag is correspondingly divided into load modulation and backscatter modulation.