light detector, lighting system, method of determining a daylight contribution and an artificial light contribution, and method of controlling the light intensity levels of dimmable luminaires of a lighting system

摘要

abstract light detector, lighting system, method of determining a daylight contribution and an artificial light contribution and method of controlling the light intensity levels of dimmable luminaires of a lighting system A light detector arranged to determine a daylight contribution and an artificial light contribution to a combined light level, wherein the artificial light comprises individual light coding modulation. The detector comprises: a photosensor arranged to detect the level of illumination in its position and generate an illumination signal; and a calculator, connected to a photosensor to receive the illumination signal, and arranged to calculate a daylight contribution and an artificial light contribution and produce corresponding daylight and artificial light signals. The calculator comprises: an electronic filter arranged to prepare the illumination signal for estimating the contributions of daylight and artificial light; one part daylight and one part artificial light respectively connected to the electronic filter. the artificial light part comprises an artificial light dc component estimator, and the daylight part comprises a total dc component estimator, and a subtractor connected to the total dc component estimator and the dc component estimator. artificial light, and being willing to determine a contribution of daylight as the difference between its outputs. The artificial light DC component estimator is arranged to include current luminaire dimmer level data and modulation depth data for light coding modulation based on its estimate.