基于白光LED的室内行走目标三维定位方法

发布时间：2019-06-01 07:42

【摘要】：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。
[Abstract]:In order to solve the practical problems such as shadow masking, poor confidentiality, large energy consumption of light source and mutual interference in the existing visible light indoor dynamic target positioning methods, and to improve the positioning accuracy, An indoor walking target location method based on white light LED is proposed. The indoor walking characteristics are analyzed, and the positioning model based on fixed compound eye receiver, SiO_2 transparent floor and beam displacement is established. The virtual direct shot transformation of the two optimal compound eye lenses is carried out to realize the three-dimensional positioning of the walking target. This method can be accurately located only with a single LED transmitter, which saves a lot of energy consumption. At the same time, it effectively shortens the beam propagation distance, improves the optical power, and has good confidentiality and generalization. The experimental results show that the monitoring error rate of the dynamic target location method can be limited to 3.5%, and when the distance between the adjacent receiver and the coverage radius of the receiver is equal to the coverage radius of the receiver, the positioning accuracy is the highest when the distance between the adjacent receiver and the coverage radius of the receiver is equal to 3.5%.
【作者单位】：天津大学电气自动化与信息工程学院;天津市公安消防局;
【基金】：国家自然科学基金(61571318) 海南省重点研发计划项目(ZDYF2016153) 青海省科技计划项目(2015-ZJ-904)
【分类号】：TN929.1

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