• 제목/요약/키워드: silver halide optical fiber

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Silver Halide 광섬유를 이용한 의료용 비접촉식 온도 센서 개발 (Development of Noncontact Temperature Sensor Using Silver Halide Optical Fiber for Medical Usages)

  • 유욱재;조동현;장경원;정순철;탁계래;이봉수
    • 대한의용생체공학회:의공학회지
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    • 제27권6호
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    • pp.337-342
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    • 2006
  • We have developed a noncontact temperature sensor using a silver halide optical fiber. The infrared collimator and focus head are connected both ends of a silver halide optical fiber with SMA connectors and used to collimate radiations of a heat source and to focus them to infrared sensors such as a pyroelectric sensor and a thermopile sensor, respectively. The relation ships between the temperatures of a heat source and the output signals of the infrared sensors are determined to measure the surface temperature of a heat source. The measurable temperature range is from 25 to $60^{\circ}C$. It is expected that a noncontact temperature sensor using a silver halide optical fiber can be developed for medical usages such as temperature monitoring during hyperthermia, cryosurgery, laser surgery and diagnostic procedure based on the results of this study.

냉각된 원전 2차계통수의 온도측정을 위한 비접촉식 광섬유 온도센서의 개발 (Development of a Fiber-optic Noncontact Temperature Sensor for Measuring the Temperature of Cooled Secondary Water in a Nuclear Power Plant)

  • 유욱재;이봉수;박병기;조영호
    • 한국산학기술학회논문지
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    • 제11권5호
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    • pp.1730-1734
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    • 2010
  • 원전 2차계통수의 pH를 예측을 위해서는 샘플을 채취, 냉각시킨 후 pH를 측정하게 되는데 이 때 샘플의 온도는 pH를 변화시키는 중요한 요인이 된다. 본 연구에서는 할로겐화 은 광섬유를 이용하여 비접촉식 온도센서를 개발하였고, 열전쌍열을 이용하여 열원으로부터 방출되는 적외선을 측정하였다. 열원과 광섬유 끝단 사이의 거리 및 각도 변화에 따른 광섬유 온도센서의 출력신호를 분석하였으며, 광섬유 온도센서로 측정한 온도범위는 $25{\sim}60^{\circ}C$이다. 본 연구결과를 기초로 원전 2차계통수 pH 샘플의 온도를 측정하기 위해 할로겐화 은 광섬유를 이용한 비접촉식 온도센서의 개발이 가능할 것으로 기대된다.

적외선 투과 광섬유를 이용한 고주파 열치료 과정에서의 온도분포 측정 (Measurements of temperature distribution using an infrared optical fiber during radiofrequency ablation)

  • 유욱재;서정기;조동현;장경원;신상훈;이봉수;탁계래;박병기;문주현
    • 센서학회지
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    • 제17권6호
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    • pp.397-405
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    • 2008
  • In this study, we have measured temperature distribution using infrared optical fibers during radiofrequency ablation (RFA). Infrared radiations generated from the water around inserted electrode are transferred by silver halide optical fibers and are measured by a thermopile sensor. Also, the output voltages of a thermopile sensor are compared with those of the thermocouple recorder. It is expected that a noncontact temperature sensor using an infrared optical fiber can be developed for the temperature monitoring during RFA treatments based on the results of this study.