室内可见光通信LED光源布局及优化

Layout and optimization of LED lighting for indoor visible light communication

在室内可见光通信系统中,根据房间尺寸对LED灯布局可有效提高光照均匀度。目前的布局方法多基于正方形平面立体空间,而长方形平面立体空间的布局方法研究较少。针对此现象,提出双纽线型LED光源布局,将LED按双纽线形状分布。在5m×4m×3m房间仿真计算使用16个LED的双纽线型布局和网格型布局的光照度和接收功率。仿真结果表明:相比于网格型布局,双纽线型布局光照波动小、光照均匀度高、接收功率分布均匀且通信效果好。通过优化双纽线型布局中单个LED光源内部芯片个数,使室内光照度和接收功率满足照明和通信标准并降低了能耗,证明该布局的可行性。

In the indoor visible light communication system, according to the room size, the layout of LED lamps can effectively improve the illumination uniformity. Most of the present layout methods are based on square plane solid space instead of paying attention to plane solid space of oblong. In order to solve this prob- lem, the double-button LED light source layout is presented with layout of LED by double-button shape. In a 5mx4mx3m room, the illuminance and receiving power of 16 LEDs double-button and grid-type layouts are simulated and calculated. The results show that the illumination intensity of double-button line layout＇s light fluctuation is less than that of grid-type layout, the illumination uniformity is higher than that of grid-type lay- out, the receiving power is distributed evenly and the communication works better. Optimizing the number of single LED light source internal chip in the double-button line layout, making the indoor illumination and re- ceiving power meet the lighting and communication standards and reducing the energy consumption, which proves the feasibility of the layout.