Summary:
Over 40% of primary energy is used for building applications and purposes. Control of electric blinds according to energy criteria can easily provide significant energy savings, particularly for well-oriented buildings. A smart system for managing electric window blinds based on solar radiation and room occupancy is proposed. It regulates the incoming light and heat to realize energy savings by using electronic sensors. The system is low cost, modular, stand alone and easy to use (plug and play). This flexible wireless solution applies to both houses of excellent quality in terms of thermal protection and old buildings with poor thermal insulation. The low cost system is composed of several wireless battery-powered electronic modules communicating through radio frequency (ISM 2.4 GHz, maximum transmission range of 100 meters). The system is optimized to reduce the electrical consumption of the electronic modules, so that the batteries need to be replaced only once a year. The proposed solution is used throughout the year, in winter as well as in summer. In cold sunny weather, open electric blinds during the day and closed blinds at night can exploit each room as a solar energy storing system. In warm seasons, the reverse operation improves the thermal comfort of the residents by trying to reduce the air conditioning costs. In addition to this, users can customize the settings according to their needs and wishes through the user interface. The electric blinds of each room are controlled independently as each room has its own solar gain, attendance and orientation. The electric blind control system has several important benefits such as comfort optimization, adjustment according to room occupancy, independent control of each room (self-determining system), use and anticipation of solar gain and, as a result, the saving of energy! Different tests and experiments have confirmed that energy requirements can be reduced up to 25% for well-oriented buildings.
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