Optimal Lighting Design

日期 : Sep 2016 - May 2017

Lighting generally consumes 25%-50% of total electricity consumption in a building. Nowadays, the building lighting source is dominated by the use of fluorescent lamps. The previous technical papers by other researchers had focused on power density control of incandescent lamps, which is now rarely used, unconsidered national standard as control reference value, and required a high-cost in investment. By these reasons, this project proposes a building lighting system based on fuzzy logic scheme to automate LED lights in order to achieve illumination according to Specified Standards. The input variables were lighting from Sun and Occupancy. The output variable was the required illumination to achieve the standard. The required illumination determined the number of lamps that had to be turned ON or OFF. In the experiment result, a laboratory illumination of lighting without controller in workdays was about 300 lux (average), while with the proposed controller it varied between 250–300 lux close to the CIE standards, i.e. 250 lux. Meanwhile, with the proposed controller the electricity consumption for a laboratory can be 45% lower than the lighting without controller.