光学技术, 2018, 44 (3): 257, 网络出版: 2018-06-09
基于室内可见光的两点光源定位技术研究
Research on two-point light source positioning technology based on indoor visible light
几何光学 可见光通信 室内定位 光电二极管 图像传感器 geometrical optics visible light communication (VLC) indoor positioning light-emitting diode image sensor
摘要
针对现有的室内高精度无线定位系统部署成本高, 算法复杂的问题, 提出了一种基于室内可见光的两点光源定位算法。位置坐标信息从两个LED光源发出, 由内置有单个图像传感器和加速度传感器的移动设备接收, 通过对接收到的图像及LED坐标信息进行分析, 定位出接收机所在位置的三维坐标。与现有通用的三点光源室内定位技术相比, 所提算法仅采用两点光源即可实现高精度三维定位, 大大节省定位环境部署成本; 在相同分辨率下定位精确度更高, 提高了系统应用的普适性。仿真结果表明, 在图像传感器分辨率高于2000×1500像素时, 可以达到2cm的定位精度。
Abstract
To solve the main challenges in the existing indoor high-precision wireless positioning system, such as high deployment cost and high algorithm complexity, a two-point light source positioning algorithm based on visible light is proposed. In the proposed algorithm, the three-dimensional coordinates of the mobile device can be calculated by analyzing the received image and the coordinates of the LED light sources. Comparing to the three-point light source indoor positioning technology, the proposed algorithm not only saves the cost of deploying the environment significantly, but also provides higher accuracy of positioning. The simulation results show that the accuracy of positioning achieves 2cm when the resolution of the image sensor is above 2000×1500 pixels.
车平, 冯莉芳. 基于室内可见光的两点光源定位技术研究[J]. 光学技术, 2018, 44(3): 257. CHE Pin, FENG Lifang. Research on two-point light source positioning technology based on indoor visible light[J]. Optical Technique, 2018, 44(3): 257.