基于深度学习的激光无线充电保护系统  

Laser wireless charging protection system based on deep learning

作　　者：钱绣洁 陈瀚林 马海霞[1] 杨雁南[1] 蓝建宇 QIAN Xiujie;CHEN Hanlin;MA Haixia;YANG Yannan;LAN Jianyu(Department of Physics,School of Physics,Nanjing University of Aeronautics and Astronautics,Nanjing 211100,China;Shanghai Institute of Space Power-Sources,China Aerospace Science and Technology Corporation,Shanghai 200245,China)

机构地区：[1]南京航空航天大学物理学院物理系,南京211100 [2]中国航天科技集团有限公司上海空间电源研究所,上海200245

出　　处：《激光技术》2024年第5期765-770,共6页Laser Technology

基　　金：国家自然科学基金资助项目(51577091)。

摘　　要：为了提高智能家居远程激光无线充电系统使用的安全性,采用了一种基于深度学习的激光无线充电保护系统。针对贴附于智能家居表面的光伏电池属于小目标,具有不易识别的难点,改进得到了YOLOv7-NH网络模型,设立保护监测区,并融入帧间差分法用于实时监控充电区域;通过创设原理分析-算法框架搭建-环境调试等环节,编写了对充电目标所在区域进行图像监控的保护算法,并搭建了测试系统。结果表明,当激光发射端与充电目标距离在10 m以内,基于该算法搭建的保护系统的响应启动时间均低于1 ms,即当移动异物以低于常规速率1.5 m/s进入大小为40 mm×40 mm的保护监测区时,该保护系统能够在其运动到激光束所在光路前停止激光发射。这一结果对室内激光远程无线充电保护技术的发展是有帮助的。In order to improve the safety of the remote laser wireless charging system used in smart homes,a laser wireless charging protection system based on deep learning was adopted.Meanwhile,in response to the small target of photovoltaic cells attached to the surface of smart homes,which were difficult to identify,a YOLOv7-NH network model was improved to establish a protection monitoring area and incorporate inter frame difference method for real-time monitoring of charging areas.A protection algorithm for image monitoring of the area where the charging target was located was written through the steps of creating a principle analysis algorithm framework building environment debugging,and a testing system was built.The test results show that when the distance between the laser emitting end and the charging target is within 10 m,the response start time of the protection system built based on this algorithm is less than 1ms.That is,when a moving foreign object enters the protection monitoring area with a size of 40 mm×40 mm at a speed of 1.5 m/s below the normal speed,the protection system can stop laser emission before it moves to the optical path where the laser beam is located.This result is helpful for the development of indoor laser remote wireless charging protection technology.

关 键 词：激光技术 激光远程无线充电 深度学习 YOLOv7-NH 帧间差分法 

分 类 号：TM724.3[电气工程—电力系统及自动化] TP391[自动化与计算机技术—计算机应用技术]