一种基于轻量化语义占用网格的无人物流车可行驶区域感知方法及系统

By employing a lightweight semantic occupancy mesh method, combined with onboard cameras and low-line-count LiDAR, unmanned logistics vehicles can now identify unknown obstacles and perceive drivable areas, reducing hardware costs and computational load while improving safety and decision-making quality.

CN122116311BActive Publication Date: 2026-07-17HONEYCOMB (WUHAN) MICROSYSTEM TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HONEYCOMB (WUHAN) MICROSYSTEM TECH CO LTD
Filing Date
2026-04-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional obstacle detection methods cannot identify unknown categories of objects. Existing occupancy grid methods are computationally intensive and rely on high-line-count LiDAR, making them difficult to deploy on cost-sensitive unmanned logistics vehicles. They also lack optimization for low-speed and narrow areas.

Method used

A lightweight semantic occupancy grid method is adopted. Data is collected by vehicle-mounted cameras and low-line-count LiDAR, and spatiotemporal alignment and feature extraction are performed. Image and point cloud features are fused to predict grid occupancy probability and identify semantic labels. Driving areas are generated by combining temporal smoothing processing.

Benefits of technology

It enables the identification of various unknown obstacles under low-cost hardware conditions, reduces computational load, improves driving safety, provides rich environmental understanding, and optimizes decision-making quality.

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Abstract

本申请涉及自动驾驶感知技术领域,具体是一种基于轻量化语义占用网格的无人物流车可行驶区域感知方法及系统,通过融合环视图像与激光雷达点云,提取BEV网格特征,预测占用概率;对高占用网格识别语义标签,生成初步可行域;再结合上一帧结果进行时序平滑,输出当前帧最终可行域,实现无人物流车可行驶区域感知。本申请仅需低线数激光雷达+摄像头即可实现占用网格感知,大幅降低硬件成本,符合无人物流车商业化需求。采用稀疏卷积和动态激活区域策略,计算量仅为密集方法的20%‑30%,适合边缘部署。不依赖预设类别,能够检测各类未知障碍物,提升行驶安全性。在占用基础上增加语义信息,为规划模块提供更丰富的环境理解,优化决策质量。
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