| 摘要 |
An RFID(Radio Frequency IDentification) tag and an underground facility management system using the same are provided to raise a recognition rate and minimize power consumption by using an active RFID tag using an optimal carrier wave frequency band. The RFID tag stores underground facility information. An RFID reader includes an antenna for transceiving a carrier wave of a specific frequency band with the RFID tag. A terminal processes information for managing the underground facility by receiving the information stored in the RFID tag from the RFID reader. The RFID tag includes an LC resonator(10) having a resonance frequency of the first frequency band and receiving an external signal, an amplifier(20) amplifying the received signal, a band pass filter(30) separating a signal component of the first frequency band from the signal output from the amplifier, a demodulator(60) demodulating a carrier wave from the signal output from the band pass filter and a comparator(70) extracting data by comparing the signal output from the demodulator with predetermined reference voltage. |
