Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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Collecting Travel Time Data of Mine Equipments in an Underground Mine using Reverse RFID Systems

Reverse RFID 시스템을 이용한 지하광산에서의 장비 이동시간 측정

  • Received : 2016.06.24
  • Accepted : 2016.07.21
  • Published : 2016.08.31
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Abstract

In this study, travel time data collection of mine equipments was conducted in an underground mine using a reverse Radio Frequency IDentification (RFID) system. In the reverse RFID system, RFID readers and antennas are mounted on mine equipments, and RFID tags are attached to the underground mine gallery. Indoor experiments were performed to analyze how RFID reader transmission power levels affect tag readable area and tag recognition rates. The results showed that travel time measurement become precise when the reader transmission power was reduced, however tag recognition rates were reduced. The field experiments indicated that setting the reader transmission power to 28 dBm maintained the tag recognition rate while minimizing the tracking location error. In addition, the results revealed that the reverse RFID system can be used successfully in an underground mine to collect the travel time data of haulage trucks.

본 연구에서는 reverse RFID 시스템을 이용하여 지하광산 현장에 투입되는 장비들의 이동시간을 측정하였다. Reverse RFID 시스템에서는 리더기와 안테나가 광산 장비에 탑재되며 태그는 지하광산의 갱도에 부착된다. 실내 모사실험을 통해 장비에 설치되는 RFID 리더기의 송출 전력 크기에 따라 상이하게 나타나는 태그 인식범위와 태그 인식률의 변화를 파악하였다. 그 결과 리더기의 송출 전력 크기가 작아질수록 태그 인식 범위가 좁아져 정밀한 이동시간 측정이 가능해졌으나, 태그 인식률은 떨어지는 것을 확인할 수 있었다. 현장실험 결과 본 연구에서 사용한 RFID 장비의 경우 송출 전력을 28 dBm으로 설정하는 것이 태그의 인식률을 유지하면서 측정오차를 줄일 수 있는 것으로 나타났다. 또한, 현장 실험 결과를 통해 reverse RFID 시스템이 지하광산에서 운반 트럭의 이동시간 측정자료 수집을 위해 성공적으로 사용될 수 있음을 확인할 수 있었다.

Keywords

References

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