Room illumination control method measures level of natural light entering room for calculating required brightness level for artificial light sources

摘要

The method calculates a required brightness level for artificial light sources (23,27) within a room (21,25) in dependence on the direction-dependent natural light intensity, obtained by determining the damping of direct solar radiation by cloud, for calculation of the level of direct solar radiation (Sd) and the level of dispersed natural light (Sstr). Also included are Independent claims for the following: (a) a device for regulation and/or control of the brightness within a room illuminated by natural and artificial light; (b) an ambient light measuring device