Hybrid smart lighting and climate control system for buildings

This paper deals with a new Smart lighting and climate system for sustainable office buildings. The system contains intelligent light engines able to detect natural lighting levels and to dim artificial lighting levels to increase the visual comfort and reduce the energy consumption. The heating, ventilation, and air conditioning (HVAC) subsystem is based on a smart thermostat. This module, adjusts environmental comfort indicators to increase thermal user comfort. In addition, the overall system is organized as a Wireless Sensor and actuator Network (WSAN). Different sensors nodes to monitor occupancy patterns, operative temperate, air velocity, CO2, relative humidity and illuminance levels were developed according energy harvesting techniques. The control system allows reducing the overall energy consumption near to 23% in lighting and 43% in HVAC and it is oriented to sustainable office buildings.