目的 针对现有的导盲系统精度不足、盲人出行的安全性不足及出行不便捷等问题,设计一款基于虚拟触觉的导盲手套,帮助盲人解决出行难题.方法 通过北斗导航模块进行路线规划,将视觉识别和飞行时间技术相结合以识别路况,通过舵机实现手指限位产生虚拟触觉从而构建虚拟扶手并进行导盲.结果 选取10种盲道上常见的障碍物进行视觉识别,平均识别率大于89%,帧率大于14.5 fps,测距误差小于5 cm.结论 实际评测结果表明,本系统可满足对导航定位、障碍物、信号灯和公交站牌等的识别、测距和触觉导盲的需求.
Objective Aiming to the limits of current guiding system,such as inaccuracy,insufficient safety and inconvenient travel for the blind population,to design a guiding glove based on virtual touch,so as to help the blind person solving their mobility problems.Methods The routing plan through combinations of the Beidou navigation module was projected.Visual recognition and time-of-flight technique were combined to identify road conditions,and the finger movement to generate virtual armrest for guidance was realized to construct virtual handrail and guide the blind.Results Ten common obstacles on blind roads were selected for visual identification,with an average recognition rate above 89%and a frame rate greater than 14.5 fps.The error of distance measurement was less than 5 cm.Conclusion The validation results show that the proposed system can meet the demands of road identification,distance measurement and tactile sense guide for destination,obstacles,signal lights and bus stop signs.
侯英婷;白贵垚;袁海鑫;尚禹
中北大学 信息与通信工程学院,山西 太原 030051
预防医学
虚拟触觉;机器视觉;路径规划;可穿戴;导盲手套
virtual touch;machine vision;routing plan;wearable;guiding glove
《中国医疗设备》 2024 (003)
32-37,52 / 7
山西省基础研究计划项目(202203021211100;202203021221097);2023年国家级大学生创新创业训练计划项目(202310110008).
10.3969/j.issn.1674-1633.2024.03.006
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