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Reviewing the role of photosensors in lighting control systems

By L. Doulos, A. Tsangrassoulis and F. V. Topalis


Abstract:- The application of innovative technologies of automatic control in lighting systems gains daily the interest of engineers, constructors and users. The main purpose of these applications is the energy savings. Daylight control is a form of automatic control that replaces the manual control of the users. The core of this system is the photosensor, which creates a signal in proportion to the amount of the daylight that detects, using its spatial and spectral response. The signal of the photosensor can be combined with dimming electronic ballasts which adjust the electric light output giving a great potential for energy savings in areas with high levels of daylight. Nevertheless, the daylight responsive systems are widely misunderstood and they have been characterized hastily as problematic systems. The lack of knowledge and comprehension of these systems is a great withdraw against their widespread use and a lost opportunity for energy savings. In this present study becomes effort to overcome these difficulties clarifying the operation procedures of the photosensors and their function as part of the lighting system. Also the characteristics that influence their operation are presented with advices for their optimum placement in spaces of application

Topics: Key-Words, Daylight, Lighting Controls, Photosensor
Year: 2014
OAI identifier: oai:CiteSeerX.psu:
Provided by: CiteSeerX
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