多线激光雷达转镜扫描系统  

Multi-Beam Lidar Rotary Mirror Scanning System

作　　者：林建东 宋跃 LIN Jiandong;SONG Yue(Beijing Branch,Wuhu Sensortech Intelligent Technology Co.,Ltd.,Beijing 100035,China)

机构地区：[1]芜湖森思泰克智能科技有限公司北京分公司,北京100035

出　　处：《电子科技》2025年第1期52-58,共7页Electronic Science and Technology

基　　金：中央引导地方科技发展资金项目(226Z1710G)。

摘　　要：为解决传统多线激光雷达以固定角度分辨率扫描导致远距目标探测空间分辨率变低的问题,文中提出一种双光源对称布置的8线激光雷达扫描系统。运用光线矢量法系统研究了旋转反射镜和光源参数与光束扫描轨迹的规律,结合激光雷达方程优化设计8线激光雷达整机参数。通过严格计算激光经不同倾角的反射镜旋转扫描的光束轨迹,在八面反射镜两侧特定位置对称布置两个光源进行分时发光探测实现具有高空间分辨率的八面反射镜旋转扫描系统。矢量计算结果表明,对距离100 m的人体在正前方有两条扫描探测光束,人体在侧向和边缘处仍有3条扫描探测光束,说明所提八面反射镜旋转扫描系统能更有效利用扫描光束探测远距离目标,优于Velodyne 64线激光雷达。To solve the problem of low spatial resolution of remote target detection caused by fixed angle resolution scanning of traditional multi-line lidar,an eight-line lidar scanning system with symmetrical arrangement of two light sources is proposed.The parameters of the rotating mirror and light source and the scanning trajectory of the beam are studied using the ray vector method,and the parameters of the eight-line lidar are optimized by combining the lidar equation.By strictly calculating the beam trajectories scanned by the mirror with different inclination angles,two light sources are symmetrically arranged on both sides of the eight-sided mirror for time-sharing luminescence detection to realize the eight-sided mirror rotation scanning system with high spatial resolution.The vector calculation results show that there are two scanning detection beams in front of the human body at a distance of 100 m,and there are still three scanning detection beams in the side and edge of the human body,indicating that the proposed eight-sided mirror rotating scanning system can detect long-distance targets more effectively using scanning beams,which is better than the Velodyne 64-line lidar.

关 键 词：激光雷达 光线矢量法 空间分辨率 旋转反射镜 矢量计算 激光雷达方程 矢量反射定律 双光源 扫描轨迹 

分 类 号：TN249[电子电信—物理电子学]