RFID SYSTEM AND CONTROLLING METHOD THEREOF

摘要

An RFID(Radio Frequency IDentification) system and a controlling method thereof are provided to increase a response distance and decrease a power level of a reader by adding an intelligent type power supply device transmitting RF to a tag for a specific time and interrupting transmission of the RF after the specific time in case that a write command is included after a response signal is completely transmitted. A receiver(71) and a transceiving antenna(72) are able to keep a standby state. An RF generator(75) is operated by external power. A controller(73) outputs the RF generated from the RF generator to the tag(50) in the case that a question signal provided from the reader(10) is completely transmitted to the tag and a response request command for the question signal is detected by processing an RF signal transmitted from the reader. The controller interrupts output of the RF after the RF is output for the specific time when the response signal provided to the tag from the reader is completely transmitted and the write command is detected. A transmitting antenna(77) outputs the RF to the tag by processing the RF of the controller.