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为了解决现有可见光室内动态目标定位方法中出现的阴影遮蔽、保密性差、光源能耗量大且相互干扰等实际问题,提高定位精度,提出一种基于白光LED的室内行走目标定位方法。分析了室内行走特点,建立基于固定的复眼接收器、SiO_2透明地板和光束位移的定位模型,对两处最优复眼透镜进行虚拟直射变换,实现行走目标的三维定位。该方法仅用单一LED发射器即可精确定位,节省了大量能耗。同时,有效缩短了光束传播距离,提高了光功率,具有良好的保密性和泛化性。实验表明:动态目标定位方法监测位置误差率能够限制在3.5%以内;当对5个以上行走目标定位时,若相邻接收器间距与接收器覆盖半径相等,则定位精度最高。
In order to solve the practical problems such as shadowing, poor confidentiality, high energy consumption and interference with each other in the existing indoor dynamic target location method for visible light, and to improve the positioning accuracy, a white LED based indoor walking target positioning method is proposed. The characteristics of indoor walking were analyzed, and the positioning model based on fixed compound eye receiver, transparent floor of SiO 2 and beam displacement was established. The two optimal fly-eye lenses were transformed by virtual direct projection to realize the three-dimensional positioning of the walking target. This method allows precise positioning with just a single LED emitter, saving a lot of energy. At the same time, it effectively shortens the propagation distance of the light beam, improves the optical power, and has good confidentiality and generalization. Experiments show that the dynamic target localization method can limit the position error rate to within 3.5%. When more than 5 walking targets are located, if the distance between adjacent receivers is equal to the receiver coverage radius, the positioning accuracy is the highest.