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Analysis of LLL System Properties for Different Excitation Parameters

Author

Listed:
  • Krzysztof Wandachowicz

    (Institute of Electrical Engineering and Electronics, Faculty of Control, Robotics and Electrical Engineering, Poznan University of Technology, Piotrowo Street, No. 3a, 60-965 Poznan, Poland
    These authors contributed equally to this work.)

  • Małgorzata Zalesińska

    (Institute of Electrical Engineering and Electronics, Faculty of Control, Robotics and Electrical Engineering, Poznan University of Technology, Piotrowo Street, No. 3a, 60-965 Poznan, Poland
    These authors contributed equally to this work.)

  • Przemysław Otomański

    (Institute of Electrical Engineering and Electronics, Faculty of Control, Robotics and Electrical Engineering, Poznan University of Technology, Piotrowo Street, No. 3a, 60-965 Poznan, Poland)

Abstract

Photoluminescent strips forming a Low Location Lighting (LLL) system are the primary method for marking escape routes on passenger ships. The LLL system can be built as a self-luminous system (powered by electricity) or made as a series of strips made of photoluminescent materials, which glow and indicate the escape route after the loss of basic and emergency lighting. To ensure correct visual guidance, these strips must be installed at specific locations in the passageways and achieve appropriate photometric parameters after a certain time from their activation. The properties of the LLL system depend on the type of luminescent material used, the excitation source, and the exposure parameters. This paper presents the results of laboratory tests on two types of photoluminescent materials used for the construction of LLL systems. We recorded the change in luminance after the loss of excitation and measured the luminance values obtained 10 and 60 min after the loss of excitation under exposure to light sources commonly used for interior lighting on passenger ships. It turns out that replacing fluorescent lamps with LED lamps can reduce the luminance of the LLL system.

Suggested Citation

  • Krzysztof Wandachowicz & Małgorzata Zalesińska & Przemysław Otomański, 2021. "Analysis of LLL System Properties for Different Excitation Parameters," Energies, MDPI, vol. 14(22), pages 1-8, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7723-:d:681767
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