贺军义，范广晖，张敏，等.井下巷道新型可见光通信光源布局方法［J］.河南理工大学学报（自然科学版），2024，43（2）：147-154.

HE J Y，FAN G H，ZHANG M，et al.Layout optimization method of new visible light communication light source in mine tunnel［J］.Journal of Henan Polytechnic University（Natural Science），2024，43（2）：147-154.

井下巷道新型可见光通信光源布局方法

贺军义，范广晖，张敏，韩一杰，吴梦翔，冯嘉莘

河南理工大学 计算机科学与技术学院，河南 焦作 454000

摘要: 目的 针对井下巷道可见光通信信号差异大，导致接收端信号误差增大的问题，方法 提出一种井下巷道新型可见光通信光源布局方法，并同现有光源布局方法进行对比，从光照度、接收功率、信噪比三个方面评估两种布局方法的系统性能。引入照度均匀度（IU）、功率标准偏差（STD）和信噪比的变化系数（CV）评估系统的整体性能。结果 通过仿真实验，分析不同半功率角对本文布局方法系统性能的影响，从而得出半功率角的最优取值，为50°~70°。当半功率角为70°时，与现有光源布局方法比较，本文布局方法的光照度均匀度由0.758降至0.407，降低了46.3%，且最小光照度与最大光照度之间差异更小，光照度分布更均匀；功率标准偏差由0.97降至0.42，降低了56.7%，且降低了功率波动，接收功率分布更均匀；信噪比变化系数由0.013 7下降到0.007 2，降低了47.7%，信号分布均匀性更高。结论 提出的光源布局方法整体性能优于现有方法的，为井下巷道的光源布局提供了新的解决方案。

关键词: 井下巷道；光源布局；仿真分析；可见光通信

doi:10.16186/j.cnki.1673-9787.2022040020

基金项目:国家自然科学基金资助项目（61872126，61772159）；河南省科技攻关项目（242102210185）；河南省高校重点研究基金资助项目（20A520015）；河南理工大学博士基金资助项目（60907023）

收稿日期: 2023/04/08

修回日期: 2023/08/09

出版日期:2024/03/25

Layout optimization method of new visible light communication light source in mine tunnel

HE Junyi，FAN Guanghui，ZHANG Min，HAN Yijie，WU Mengxiang，FENG Jiashen

School of Computer Science and Technology，Henan Polytechnic University，Jiaozuo 454000，Henan，China

Abstract: Objectives Aiming at the problem of large differences in visible light communication signals in underground mine tunnels，and increased signal errors at the receiving end，a new visible light communication light source layout method in underground mine tunnels was proposed. Methods Compared with existing light source layout methods，the system performance of the two layout methods was evaluated from three aspects：illumination，received power， and signal-to-noise ratio. The coefficients of variation of illumination uniformity，power standard deviation and signal-to-noise ratio were introduced to evaluate the overall performance of the system. Results Through simulation experiments， the impact of different half-power angles on the system performance of the layout method in this paper was analyzed，and it was concluded that the optimal value of the half-power angle was 50°~70°.When the half-power angle was 70°，compared with the existing light source layout method，the illumination uniformity of the layout method proposed in this article was reduced from 0.758 to 0.407，a reduction of 46.3%，and the difference between the minimum illumination and the maximum illumination was smaller，the illumination distribution was more uniform；in terms of received power，the power standard deviation was reduced from 0.97 to 0.42，a reduction of 56.7%， and the power fluctuation was reduced too，and the received power distribution was more uniform；in terms of signal-to-noise ratio，the signal-to-noise ratio variation coefficient was reduced from 0.013 7 dropped to 0.007 2，a reduction of 47.7%，and the signal distribution was more uniform. Conclusions The light source layout method proposed in this article was overall better than existing methods，and can provide a new solution for the light source layout in underground mine tunnels.

Key words:underground mine tunnel；light source layout；simulation analysis；visible light communication