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首页> 外文期刊>LEUKOS >Light Pollution Index (LPI): An Integrated Approach to Study Light Pollution with Street Lighting and Fac?ade Lighting
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Light Pollution Index (LPI): An Integrated Approach to Study Light Pollution with Street Lighting and Fac?ade Lighting

机译：光污染指数（LPI）：研究街道照明和立面照明的光污染的综合方法

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摘要

Rather than being complementary, street lighting andnfac?ade lighting are typically designed independently of each other. Asna result, light from street lighting luminaires might spill onto buildingnfac?ades and influence characteristics of the fac?ade lighting includingnrequired light levels and color. Conversely, fac?ade lighting might reflectnonto the street and contribute to the street illumination. This manuscriptnpresents an integrated approach to analyzing the interaction betweennthe street and fac?ade lighting in consideration of light pollution control.nA generic street model with various calculation grids was studied. Itnwas found that a moderately lit fac?ade contributes to a horizontalnilluminance of 5 lux or more on the street and a vertical illuminance ofn4 lux or more 1.5 m above the sidewalk. An over-illuminated streetnmay result when both street and fac?ade lighting exist without referencento each other. The size of the light-pollution calculation grid and the usenof a 3-D illuminance graph were studied. It was found that fluctuationsnin the calculated amount of light pollution could occur unless the size ofnthe pollution calculation grid is large enough to capture all of thenupward flux. A method of achieving the optimal size of the calculationngrid is demonstrated. Shortcomings of using light pollution percentagenas a light pollution index are highlighted and an alternative lightnpollution index is proposed.
机译：街道照明和立面照明通常是彼此独立设计的，而不是互补的。结果，来自街道照明灯具的光可能会溅到建筑物的立面上，并影响立面照明的特性，包括所需的照明水平和颜色。相反，立面照明可能不会反射到街道上并有助于街道照明。该手稿提出了一种综合的方法，以考虑光污染控制来分析街道与立面照明之间的相互作用。研究了具有各种计算网格的通用街道模型。结果发现，中等照明度的立面有助于在街道上的水平照度达到5 lux或以上，在人行道上方的垂直照度达到n4 lux或以上1.5 m。当街道照明和立面照明同时存在而不相互参照时，可能导致街道照明过度。研究了光污染计算网格的大小和3-D照度图的使用。已经发现，除非污染计算网格的大小足够大以捕获所有随后的向上通量，否则在计算的光污染量中可能会发生波动。说明了一种实现最优计算大小的方法。突出了使用光污染百分比和光污染指数的缺点，并提出了替代的光污染指数。

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