兼顾照明的室内可见光定位系统研究

Research of indoor positioning and illuminating systems based on visible light

为了解决目前室内定位算法精度不高等问题,设计了一套兼顾照明与定位的可见光室内定位装置。首先按照国际照度标准对室内光源进行了布局,然后设计了强度调制/直接检测的可见光收发系统和以STM32为核心处理器的室内定位系统平台,最后采用多点标定相对定位方法,实现了目标点坐标及区域的标定。结果表明,在满足照明的条件下,测量误差低于10cm,部分定位区域的测量误差为3cm,甚至0cm;误差分辨率为0.1cm,相对误差小于10cm。该研究为目前室内定位技术提供了一种方案。

In order to solve the problem of low precision of indoor location algorithm , a set of visible light indoor positioning device which has illuminating function at the same time was designed. First of all , the layout of the indoor light source was arranged according to international standard of illumination. Secondly , a visible light transceiver system of intensity modulation/direct modulation （ （M/DM） and an indoor positioning system platform with STM32 as core processor were designed. Finally , the calibration of target coordinates and regions was realized by using the method of multi point calibraresults show that , under the conditions suitable for illumination , measurement error is less than 10cm. The measurement error ofpartial location area is 3cm or even 0cm. Error resolution is 0. 1cm , and relative error is less a scheme for current indoor positioning technology.