Non-connection Bluetooth scanning and location technology for energy-saving control system

To realize energy saving and intelligent control of classroom lighting, a control system based on the non-connection Bluetooth scanning and location technology is designed in this paper. Through scanning the Bluetooth devices without establishing a connection, the amount of the Bluetooth devices is obtained. A new weighted barycenter location method is also proposed to locate the cell-phones indoor. With the light sensation and distance parameters, the on or off of the lights in the classroom is controlled intelligently. It is proved by practice that the proposed system can precisely control the lights in the classroom according to the number of the people and their distribution, saving up to 40% electricity energy.