• Title/Summary/Keyword: 고휘도

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세계의 첨단기술

  • Korean Federation of Science and Technology Societies
    • The Science & Technology
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    • v.16 no.4 s.167
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    • pp.44-46
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    • 1983

  • - 스페이스 콜로니 - 고휘도 전자방사재료

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Research and development on image luminance meter of road tunnel internal and external (도로터널 내/외부의 영상휘도 측정기 연구개발)

  • Jang, Soon-Chul;Park, Sung-Lim;Ko, Seok-Yong;Lee, Mi-Ae
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.17 no.1
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    • pp.1-9
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    • 2015

  • This paper introduces the development of imaging luminance meter which measures the luminances of external/internal road tunnel. The developed imaging luminance meter complies with both L20 method and Veiling luminance method of the international standards, CIE88. In this paper the L20 method is mainly presented because most of tunnels currently adapt L20 method. The developed system has an embedded computer to operate at stand-alone. The system has a ethernet port, a heater, a fan, a defroster, a wiper and sun shielder. Compensation algorithm is applied for correcting non-linear responses to the luminance and integration time. The accuracy of measurement is less than 1% when it calibrated at the public certification institute. The developed system was also tested at the real field, road tunnel. The test results were very similar with the reference luminance meter and showed that the developed system operates well at the real field. Partial sensor saturations were happened to show the less luminance, because there were the high reflecting objects in the real field. Further study should be followed for high luminance measurement.

  • https://doi.org/10.9711/KTAJ.2015.17.1.001 인용 PDF KSCI