基于防护光束回射的激光传能防护系统研究  

Research on Laser Energy Transfer Protection System Based on Retroreflection of Protection Beam

作　　者：史书源 李勇[1] Shi Shuyuan;Li Yong

机构地区：[1]东华大学环境科学与工程学院

出　　处：《安全与电磁兼容》2024年第6期43-48,共6页Safety & EMC

摘　　要：激光无线传能系统中,现有的防护装置不能实现太阳光背景、远距离传输场景中的激光传能人体安全。文章研究了户外工作条件下基于防护光束回射原理的防护装置的设计及响应距离。通过参数调整,防护系统实现了户外5 dB信噪比下,最大270μs迅速响应保护功能。采用回射能量分析的方式对防护系统的有效距离进行建模,结果表明:防护光束发散角为0.025 mrad时,防护系统有效距离达到767.04 m;发散角为0.01 mrad时,有效距离在1 km以上。In the existing laser wireless energy transmission system,the safety protection devices cannot ensure the safety of laser energy transmission to human body in the sunlight background and long-distance transmission scenarios.In this paper,the design and response distance of the protective device based on beam retroreflection under outdoor conditions are researched.Through the system parameters adjustment,the maximum 270μs system rapid response protection function was realized under the outdoor 5 dB signal-to-noise ratio.The effective distance of the protection system is modeled based on the energy analysis of the retroreflection,and the results show that:the effective distance of the protection system reaches 767.04 m when the divergence angle of the protection beam is 0.025 mrad;and the effective distance is above 1 km when the divergence angle is 0.01 mrad.

关 键 词：激光无线传能 激光安全 最大允许辐照量 激光大气传输 

分 类 号：TN249[电子电信—物理电子学]