Intelligent lighting system with an additional energy-saving mechanism

Intelligent lighting systems have been able to realize a minimum electrical power consumption for a given arbitrary illumination in an arbitrary location. By randomly increasing and decreasing the brightness of each lamp, the lighting intensity is controlled and the required parameters for this control are then learned. For this reason, lamps need to be lit above a certain brightness level, and when the user is away from their seat, for example, even in a place where illumination is not needed, the lights are not turned off. These intelligent lighting systems have achieved high energy savings using different lighting for each individual, but, from the viewpoint of additional energy saving, it would be desirable for a mechanism which could also turn out lights. Therefore, in this study, we propose a mechanism to turn out any unnecessary lights appropriately as the users are away from their seats. To verify the effectiveness of the proposed system, as a performance test, we set up an experimental system using 10 dimmable fluorescent lamps and 10 illuminance sensors to compare the energy saving with that of a conventional intelligent lighting system. It was confirmed that the proposed system was also able to realize an illuminance convergence capability similar to conventional systems, while additional high energy saving was also possible.