Content
Light & Engineering 29 (1)
Volume 29Date of publication 02/27/2021
Pages 77–87
Abstract:
A software-based comparative simulation work was conducted about the luminance-based method of road lighting design with MATLAB and DIALux, giving due consideration to the design standards laid down in CIE140:2019 technical report. The outputs were obtained for a specified set of road lighting conditions in terms of luminaire mounting height, road width, spacing of lighting poles, overhang, and maintenance factor for four different CIE standard road surfaces R1, R2, R3, and R4, six different observer positions and three types of luminai rearrangements. MATLAB and DIALux outputs were quantified by three quality parameters, namely: average luminance, overall uniformity and longitudinal uniformity of luminance, and the linear correlation between the two was found to be statistically significant (p < 0.00001). DIALux, as a graphical lighting design tool, was found to be more convenient than the algorithm-reliant MATLAB programming approach for general road lighting simulation. However, MATLAB programming approachcould facilitate experimental road lighting simulation, and the developed MATLAB program could be used as a flexible tool to simulate road lighting with experimental luminaire distribution curve of luminous intensity (I) and road surface reduced luminance coefficient (r) tables. Further developments upon it could potentially integrate provisions for luminaires with custom tilt and curved road surfaces.
References:
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Keywords
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