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中文摘要: 传统视觉导航方法多依赖于稳定的环境特征和全局一致的地图,对于环境特征及光照要求较高,同时存在无法获得精确的导航位置、收敛性无法保证等问题;因此,本文提出了一种不依赖全局地图,仅通过识别ArUco码信息实现自主移动机器人返航的方法。机器人在出发状态中识别并以时序记录相对于视界内的ArUco码的关键位姿,使得在返航状态中通过选择视界内时序更小的ArUco码并构建局部坐标系从而实现局部定位与导航,并通过局部坐标系的连续变化,实现无全局地图返回出发点的目的。机器人对不同的出发路径实现了返回出发点的结果并实现了静态障碍物的避障功能,在全覆盖路径返航测试中节约了79.16%的路程,同时机器人在20次重复定位测试中实现了平均停止误差0.8cm。该方法展现出对于不同出发路径采用更短的返航路径的能力,具有一定的自适应性。
中文关键词: 视觉返航;视觉导航;ArUco码;自主移动机器人;无地图
Abstract:Traditional visual navigation methods depend on stable environmental characteristics and globally consistent maps which have high requirements on environmental features and lighting conditions. These methods often face challenges such as the inability to obtain an accurate navigation position and convergence issues. To address these challenges, this paper presents a homing method for autonomous mobile robots based on ArUco marker recognition, without the need for map building. The proposed method involves recognizing the ArUco markers in the field of view of the robot, and sequentially recording the initial poses of the robot during the movement, the robot can be localized and navigated for homing through continuously choosing the earlier ArUco marker and building the corresponding local coordinate system. The method achieves the homing results of the robot for different navigation paths with static obstacles. In the complete coverage path test, the homing trajectory saves 79.16% of the coverage trajectory length. Furthermore, with the 20 times repeat stopping test, the robot achieved a 0.8cm average stop distance, which shows its precise navigation ability. The method is adaptable to different paths and it demonstrates a competence for skipping parts of the path and cutting corners to the start point.
文章编号:20230312 中图分类号: 文献标志码:A
基金项目:国家自然科学基金联合基金(U1813222);广东“特支计划”青年拔尖人才(2019TQ05Z654);国家自然科学基金联合基金项目(U20A20283)
引用文本:
郭驿众,李根,许佳斌,王卫军,冯伟,王建.基于ArUco码的无地图AMR视觉辅助归航方法[J].飞控与探测,2023,(3):95-102.
郭驿众,李根,许佳斌,王卫军,冯伟,王建.基于ArUco码的无地图AMR视觉辅助归航方法[J].飞控与探测,2023,(3):95-102.

