一种协同定位算法在智能照明系统中的应用

Application of A Cooperative Localization Algorithm in Intelligent Lighting System

摘要:

灯具是智能照明系统的控制对象,而控制灯具的前提是找到灯具的位置；针对灯具的定位问题,提出了一种基于加权质心和泰勒级数展开的协同定位算法；为使定位更加稳定与精确,该算法利用加权质心算法对未知节点进行初始定位,再将其作为泰勒级数展开算法的初值,精确估计未知节点的位置；仿真结果表明,与传统的加权质心算法相比,该协同定位算法收敛性好,定位精度高,最大定位误差小于1.8 m,平均定位误差可以达到0.7 m；这种定位算法应用于智能照明控制系统中,有利于精确地对灯节点进行控制。

Abstract:

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 m, the average position error can reach 0.7 m. The localization algorithm is applied to intelligent lighting control system and is advantageous to the accurate control of lamp nodes.