A Digital Control System for Lighting Energy Consumption Efficiency (LECE)

In this article, a digital control systems for Lighting Energy Consumption Efficiency (LECE), based on a proportional-integral-derivative (PID) controller, is proposed. In this approach, the designed microcontroller system interacts with natural lighting and controls led light bulbs. In this sense, this system is able to automatically reduce, in a smart appropriate manner, the consumption of energy without affecting the comfort of people visualization. The proposed system was tested during three months and located in four physical spaces at Universidad Politecnica Salesiana (UPS) in Cuenca. In order to perform a quality analysis of the smart system, three items were selected to study: illumination, luminance and consumed electrical power. According to the results, the electronic system was able to save approximately 70% of lighting energy consumption.