PASSIVE RADIO FREQUENCY IDENTIFICATION TAG, OPTICAL RADIO FREQUENCY READ/WRITE HEAD AND RADIO FREQUENCY IDENTIFICATION SYSTEM

摘要

Disclosed are a passive radio frequency identification tag, an optical radio frequency read/write head and a radio frequency identification system. The optical radio frequency read/write head comprises: at least one optical emitter, a chip, and a radio frequency antenna. The radio frequency antenna is connected to the chip, and is arranged to receive an uplink radio frequency signal sent by a radio frequency identification tag. The chip is arranged to control the at least one optical emitter to send a downlink optical signal to the radio frequency identification tag and process the uplink radio frequency signal, so as to perform a read/write operation on the radio frequency identification tag. The at least one optical emitter is connected to the chip, and is arranged to emit the downlink optical signal. The present invention, by sending a command of a read/write operation via an optical signal, prevents the interference problem caused by a read/write operation command being sent via a radio frequency signal, and the command being received by a plurality of radio frequency identification tags.