Smart modular lighting control system with dual-beam luminaires. (June 2015)

• Record Type: Journal Article
• Authors: Caicedo, D; Pandharipande, A; Vissenberg, MCJM
• Is Part Of: Lighting research & technology. Volume 47:Number 4(2015:Aug.)
• Page Start: 389
• Page End: 404
• Publication Date: 2015-06
• Subjects: Lighting -- Periodicals; 621.32
• DOI: 10.1177/1477153514530982
• Languages: English
• ISSNs: 1477-1535

Abstract

We consider a smart lighting system with multiple dual-beam luminaires, with co-located occupancy and light sensors. A dual-beam luminaire emits a hollow beam and a narrow beam, suitable, respectively, for providing ambient and task lighting both controllable independently. We consider an occupancy- and daylight-adaptive lighting system, wherein the luminaire controller determines the dimming levels of the dual beams such that the lighting system provides a desired illuminance based on local occupancy and light sensor inputs. We present a method for calibrating the light sensors to obtain control set-points and a controller design so that the set-points may be attained. The proposed system performance is compared with a standard-beam lighting system using lighting simulations. We find that the dual-beam lighting system provides higher illumination and power saving in comparison to the standard-beam lighting system, given the additional degree of freedom provided by the two optical beams.