rfid is radio frequency identification, which is a kind of automatic
identification technology. It is a kind of automatic identification technology
and is used by a special scanning instrument. The system has only two basic
components, and there are controls to check and track objects. Non-contact
two-way data communication is carried out by radio frequency, and the recording
medium is read and written by radio frequency, so as to achieve the purpose of
identifying targets and data exchange. It is considered to be one of the most
potential information technologies in the 21st century.
working principle
The reader can be a read or read/write device according to the structure
and technology used, and is the information control and processing center of the
RFID system. The reader usually consists of a coupling module, a transceiver
module, a control module and an interface unit. Half-duplex communication is
generally used to exchange information between the reader and the tag, and the
reader provides energy and timing to passive tags through coupling. In practical
applications, management functions such as collection, processing and remote
transmission of object identification information can be further realized
through Ethernet or WLAN.
