한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제8권5호
  • /
  • Pages.525-533
  • /
  • 1997
  • /
  • 1226-3133(pISSN)
  • /
  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지

X-밴드 주파수의 마이크로파를 이용한 자유공간에서의 모래수분측정

Sand Moisture Measurement with Microwave Technique in Free Space at X-Band Frequency

  • 남현수 (한국표준과학연구원 습도그룹) ;
  • 성재용 (충남대학교 물리학과) ;
  • 박남석 (충북대학교 물리학과)
  • 발행 : 1997.10.01
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초록

건축연구에서의 수분측정 방법을 개선하기 위하여 비파괴적인 수분측정기술을 응용하였다. 본 실험은 연속적이고 비파괴적인 측정에서의 핵심요소로서 자유공간에서의 혼 안테나를 사용하여 실험하였으며 사용한 기술은 마이크로파 브릿지 장치로서 9.5GHz의 주파수에서 함수율이 1~12% 범위의 모래수분을 측정하였다. 이로부터 대표적인 교정곡선을 구하였다. 이를 바탕으로 마이크로파를 이용한 석탄, 제지, 식품 미치 건축재료 등과 같은 비금속내의 수분측정이 가능함을 보였다.

A nondestructive moisture measurement technique has been applied to improve the previous moisture measurement method in the building research. The experiment was done in free space using horns since it is the key element for continuous and non-destructive measurement. For this purpose a microwave bridge type analyzer at the frequency of 9.5 GHz was used to determine the moisture content of sands in the range of 1~12%. From this, the representative calibration curves were obtained. This shows that moisture measurement technique using microwave is applicabe to the measurement of moisture in non-metallic materials such as coal, pulp, foods, building materials, etc.

키워드

참고문헌

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