Indoor Positioning And Intelligent Lighting System Design Based On ZigBee

With the continuous improvement of people's life quality and the shortage of survival energy,energy conservation has become the mainstream of The Times.The lighting is an indispensable part of human life and work,so the intelligent lighting control system is particularly important.Intelligent lighting control system should not only meet the demand of the basic intensity of illumination,but also save energy,compared with the traditional lighting system,intelligent lighting control system more emphasis on lighting intelligent control and scientific management,In order to achieve the purpose of safe,reliable and convenient.In this background,This article puts forward a intelligent lighting control system based on ZigBee,In ZigBee wireless network,Lamps are the controlled object of the intelligent lighting system.However,The premise of controlling the lamps is to find the position.In view of the lamp localization problem.This paper puts forward a kind of cooperative localization algorithm based on weighted centroid and Taylor series expansion,In order to effectively improve the stability and accuracy of localization,in this paper,the weighted centroid algorithm is used to get initial location result which acts as the initial value in Taylor series expansion algorithm to get accuracy results.The Simulation results show that The cooperative localization algorithm is not only good convergence and high precision,Compared with the traditional weighted centroid algorithm,maximum position error is less than 1.8,the average position error can reach 0.7.The localization algorithm is applied to intelligent lighting control system,can effectively obtain the physical location of lamps and lanterns and accurately control point of lamps and lanterns.after acquiring the lamps and lanterns location,This paper presents a design proposal of intelligent lighting system based on ZigBee technology,Android telephone,PC platform.According to actual requirement,Choose the appropriate sensor to collect the environmental variables data.Send data to coordinator node by ZigBee wireless networking,then,transmit to PC by serial port.after processing,Corresponding output command are send and control the terminal node by wireless network.In addition,The PC platforms and Android mobile establish a connection and transmit data with a wifi network.and control terminal node.By testing,the system can realize Turn on/off the lamps or adjust the brightness of lamp.and reach the aim of operating conveniently and saving the energy.