Dedicated Sensing Unit for Smart Light Switching in Energy Efficient Eco-Friendly Building

Abstract

The concept of Green Building and energy efficient building is the demand of the time now due to  the increase in the number of occupants, change in climate, increase in population, gaseous emission and continuously exhausting natural resources .The buildings are the main consumers of electricity and the fields of energy consumption in a building are HVAC, lighting systems, water system, kitchen appliances etc. In this paper focus has been given on lighting consumption in a institute building. Lighting consumption in the institute building is calculated on LPD basis with use of fluorescent tube light and then using same LPD method again the energy consumption of the same building is calculated and a saving of 62% is observed. Using rooftop grid connected solar power plant provided in the institute due to lesser rate of solar power a further cash saving of 30% is observed. In the further step a classroom is considered and occupancy sensors, PIR, LDR and other sensors fitted in dedicated units made and is controlled by central micro controller so as  the system can sense and send the signals regarding occupancy, people count and luminance which may be used in Building Management System(BMS) for further controlled power saving and occupant comfort.