基于射线追踪法的矿井可见光通信信道特性分析  

Analysis of Mine Visible Light Communication Channel Characteristics Based on Ray Tracing Method

作　　者：马仲甜 张隆康 刘付刚[1] 路宁 刘新宇 周脉勇 MA Zhongtian;ZHANG Longkang;LIU Fugang;LU Ning;LIU Xinyu;ZHOU Maiyong(Heilongjiang University of Science and Technology,Harbin Heilongjiang 150001,China;Shuangyashan Mining Group Co.,Ltd.,Shuangyashan Heilongjiang 155199,China)

机构地区：[1]黑龙江科技大学,黑龙江哈尔滨150001 [2]双鸭山矿业集团有限公司,黑龙江双鸭山155199

出　　处：《通信技术》2024年第8期769-774,共6页Communications Technology

摘　　要：提出了一种新颖的基于射线追踪法的矿井可见光通信信道特性分析方法。首先,结合煤矿工作面可见光应用场景和煤矿工作面特点,基于射线追踪法建立可见光通信信道模型;其次,通过米尔散射理论对煤尘粒子对可见光的散射特征进行分析,计算得出消光系数、散射系数和吸收系数与煤尘粒子大小的关系;最后,针对不同煤尘粒子浓度的吸光度和粒子半径之间的关系进行仿真,分析煤尘粒子浓度对吸光度的影响。实验结果表明,矿井可见光通信信道特性受煤尘粒子半径和浓度影响较大,当煤尘粒子半径小于1μm时,对光的散射和吸收极为敏感,随着煤尘粒子半径的增大,消光系数趋于稳定。此外,相同煤尘粒子半径下,煤尘粒子浓度越高,吸光度越大,散射越明显。A novel method for analyzing mine visible light communication channel characteristics based on ray tracing is proposed.First,based on the ray tracing method and combining the visible light application scenarios and characteristics of coal mine working surface,a visible light communication channel model is established.Then,the scattering characteristics of visible light by coal dust particles are analyzed through Mier scattering theory,and the relationship between extinction coefficient,scattering coefficient and absorption coefficient and coal dust particle size are calculated.Finally,the relationship between absorbance and particle radius is simulated for different coal dust particle concentrations to examine the impact of coal dust particle concentration on absorbance.The experimental results indicate that the characteristics of visible light communication channel in mines are greatly affected by the radius and concentration of coal dust particles.When the radius of coal dust particles is less than 1,it is extremely sensitive to light scattering and absorption.As the radius of coal dust particles increases,the extinction coefficient tends to stabilize.In addition,for the same radius of coal dust particles,the higher the concentration of coal dust particles,the greater the absorbance and the more obvious the scattering.

关 键 词：矿井可见光通信 射线追踪法 煤尘粒子浓度 米尔散射 

分 类 号：O439[机械工程—光学工程]