Tactile Compass/触觉指南针

Liu Guanhong, YU Tianyu, YU Chun *, XU Haiqing, XU Shuchang, Yang Ciyuan, Wang Feng, Mi Haipeng, Shi Yuanchun

Abstract

Accurate and effective directional feedback is crucial for an electronic traveling aid device that guides visually impaired people in walking through paths. This paper presents Tactile Compass, a hand-held device that provides continuous directional feedback with a rotatable needle pointing toward the planned direction. We conducted two lab studies to evaluate the effectiveness of the feedback solution. Results showed that, using Tactile Compass, participants could reach the target direction in place with a mean deviation of 3.03° and could smoothly navigate along paths of 60cm width, with a mean deviation from the centerline of 12.1cm. Subjective feedback showed that Tactile Compass was easy to learn and use.

Special Thanks

Yu Tianyu, Liu Chang Song Yue
Department of Art and Crafts, Tsinghua University
The Future Laboratory, Tsinghua University

Publications / 已发表论文

”It Puts Life into My Creations”: Understanding Fluid Fiber as a Media for Expressive Display. In Proceedings of the 2022 CHI Conference on Human Factors in Computing Systems (CHI '22).

Press / 媒体报道

简介

作者：刘冠宏，于天宇，喻纯*，徐海晴，许书畅，杨辞源，王丰，米海鹏，史元春

准确有效的方向反馈对于引导视障人士行走的电子旅行辅助设备至关重要。本文介绍了触觉指南针，这是一种手持设备，可通过指向计划方向的可旋转指针提供连续方向反馈。我们进行了两项实验室研究来评估反馈解决方案的有效性。结果表明，使用触觉罗盘，参与者可以以3.03°的平均偏差到达目标方向，并且可以顺利地沿着60cm宽的路径导航，平均偏离中心线12.1cm。主观反馈表明，触觉指南针易于学习和使用。