Application of Fuzzy Logic Model for Optimal Solution of Light Reflection Value in Lighting Calculations

Abstract

The light reflectance value (LRV) of colors is one of the important factors in lighting calculations. Thus, in order to illuminate any space, architects, designers, and engineers first make lighting calculations in accordance with the requirements of that space. In light calculations, the light reflectance factor is taken from a standard table. In the standard tables, the light reflection coefficient of the colors is given between 0–100. Here 0-full black color 100-full white color, other color types must correspond to one of these ranges. Due to a large number of color types, it is not possible to obtain optimal results with the values given in the standard table in lighting calculations. For example, in any room, the colors of the ceiling, walls, and floor should be “very light”, “very very light”, “dark”, “very dark”, “very very dark”, “a little light”., “a little dark”, “really dark”, “really light”, “not too dark”, “not too light” and so on can be noted. As can be seen, these language variables cannot be applied to classical mathematical calculations. Therefore, the fuzzy logic method is the best solution to such problems. Thus, the theory of fuzzy logic was applied to the optimal solution of the light reflection factor of the ceiling, wall, and floor in lighting issues, which allows using the knowledge and experience of designers as the main goal in this work.