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Data Terminal for Metal Detection Application in Hazardous Environment

내환경성 금속인식 정보단말기에 관한 연구

  • 최규남 (인천대학교 정보통신공학과)
  • Received : 2011.02.03
  • Accepted : 2011.03.02
  • Published : 2011.05.30

Abstract

The novel metal position detection method is proposed where conventional techniques, in high temperature, moisture and particle environment, are not able to be applied. It is known that electronic devices, utilizing microwave, ultrasonic or optical technique, are hard to apply for sensing application where temperature is exceeding above 300 degree centigrade. Metal position detection technique, which was consisted with passive elements facing hot sensing surface, utilizing electromagnetic wave was investigated, and the metal detection sensitivity was measured by varying sensor frequency and sensing distance. Measurement result in laboratory test set-up showed position measurement resolution up to 1mm, when distance between two sensing elements were 500mm, and possibility to measure position of hot metal sheet having very high surface temperature.

고온다습하며 이물질이 존재하는 일반적인 금속감지 기술이 적용되기 어려운 환경에서도 사용할 수 있는 금속위치감지 방법을 제안한다. 섭씨 300도가 넘는 환경에서는 마이크로웨이브, 초음파, 광파를 매체로 하는 일반적인 송수신용 전자소자를 사용하는 금속감지 센서는 전자소자의 동작온도 범위를 넘어서므로 적용하는데 어려움이 있었다. 본 연구에서는 금속감지를 위하여 노출되는 면에는 수동소자를 사용하고 전자파를 금속 위치감지에 이용하는 기법을 사용한 금속의 위치감지 장치에서 전자파의 주파수, 감지거리가 금속감지 센서의 감도에 미치는 영향을 측정하였다. 측정된 결과는 500mm 간격에서도 1mm 해상도를 갖고 위치를 감지할 수 있으며 고온에서도 금속의 위치 측정이 가능함을 보여주었다.

Keywords

References

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