한국화재소방학회논문지 (Fire Science and Engineering)

  • 제26권2호
  • /
  • Pages.69-74
  • /
  • 2012
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  • 2765-060X(pISSN)
  • /
  • 2765-088X(eISSN)
한국화재소방학회 (Korean Institute of Fire Science and Engineering)
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화재용 열화상 카메라의 영상포화특성 평가

Performance Evaluation of Image Saturation of Thermal Imaging Camera for the Fire Service

  • 투고 : 2012.01.10
  • 심사 : 2012.04.13
  • 발행 : 2012.04.30
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초록

적외선 파장영역의 높은 연기투과율에 기초한 열화상기술은 화재안전분야에서 효과적인 첨단기술 중의 하나로 인식되고 있다. 본 연구는 주변열적조건에 따른 열영상 포화특성을 파악하고 대조비변환함수(CTF)를 이용하여 영상의 수준을 평가하고자 한다. 본 실험에서 수행된 조건에 대해 BST 센서를 적용한 열화상 카메라의 경우 영상포화가 발생하지 않았으며 영상수준이 배경과 목표물의 온도차에 비례하는 것으로 나타났다. 본 연구는 열화상기술의 신뢰성을 확보하고 기술개발을 위한 기초자료로 활용될 수 있다.

Thermal imaging technology based on IR sensor with high transmittance through the fire smoke is considered as one of the advanced technology for the fire service. The present study has been performed to investigate the image saturation characteristics with thermal condition of target and background and evaluate the performance of image quality based on the contrast transfer function (CTF). For the present testing conditions, TIC using BST sensor did not show the image saturation and the image quality based on the CTF was proportional to the temperature difference between target and background. This study can be utilized as preliminary study to improve reliability and technical development of TIC.

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참고문헌

  1. F. Amon, N. Bryner, and A. Haminis, "Thermal Imaging Research Needs for First Responders: Workshop Proceeding", NIST Special Publication 1040(2005).
  2. ASTM E 143-00, "Standard Test Method for Noise Equivalent Temperature Difference of Thermal Imaging System", ASTM International, West Conshohoken, PA(2006).
  3. ANSI/ISA 12.12.01-2000, "Nonincendive Electrical Equipment for Use in Class I and II, Division 2 and Class II, Division 1 and 2 Hazardous (Classified) Locations", ANSI Publication, New York, NY (2000).
  4. ASTM B 117-03, "Standard Test Method for Salt Spray (Fog) Testing", ASTM International, West Conshohoken, PA(2003).
  5. ASTM D 6413-99, "Standard Test Method for Flame Resistance of Textiles (Vertical Test)", ASTM International, West Conshohoken, PA(1999).
  6. ASTM F 1359-99a, "Standard Test Method for Liquid Penetration Resistance of Protective Clothing or Protective Ensembles Under a Shower Spray While on a Mannequin, ASTM International", West Conshohoken, PA(2004).
  7. ASTM E 1311-89, "Standard Test Method for Minimum Detectable Temperature Difference for Thermal Imaging System", ASTM International, West Conshohoken, PA(2004).
  8. NFPA 1801, "Standard on Thermal Imagers for the Fire Service", National Fire Protection Association, Quincy, MA(2010).
  9. FLIR Technical Note, "Uncool Detectors for Thermal Imaging Cameras".
  10. S.C. Kim, F. Amon and A. Hamins, "Performance Evaluation of Fire Fighter Thermal Imagers: Characteriszation of an Optical Smoke Cell", NIST Annual Fire Conference(2007).