一个手持设备为视障人士提供触觉定向线索
Shuhao Dong1, Justin Gallagher1, Andrew Jackson1
1Rehabilitation Robotics Laboratory, School of Mechanical Engineering, University of Leeds, Leeds LS2 9JT, UK.
Sensors (Basel, Switzerland)
|October 28, 2023
概括
研究人员优化了对方向触觉线索的不对称振动,这对于视力受损的导航至关重要. 0.3430-0.3508之间的不对称比增强了感知,剪切力超过正常力.
科学领域:
- 人与计算机的交互
- 触觉反系统是一种触觉反系统.
- 感官神经科学是一种神经科学.
背景情况:
- 触觉信息对于日常任务至关重要,特别是对于在现实环境中导航视力受损的人来说.
- 不对称的振动被用来产生拉动感觉的定向触觉线索由于非线性的人类触觉处理.
- 目前的方法缺乏对输入控制信号产生不对称的振动和量化输出不对称的参数化,以获得最佳的感觉.
研究的目的:
- 调查和参数化输入控制信号设计,以产生有效的定向触觉线索.
- 量化输出振动的不对称性,以改善拉动感觉.
- 为了评估可调节参数 (延迟时间,拉坡下降步骤长度,切断电压) 对触觉暗示感知的影响.
主要方法:
- 利用一个阶梯梯的输入信号来产生不对称的振动.
- 进行位移测量以分析振动特征.
- 进行了心理物理实验,以评估人类对触觉定向线索的感知.
主要成果:
- 优化的切断电压和0.3430-0.3508之间的量化不对称比率显著改善了触觉定向暗示感知.
- 与正常力相比,切削力在传递触觉反方面表现优越.
- 确定了影响方向线索拉动感觉的关键参数.
结论:
- 该研究提供了一种可量化的方法,用于设计定向触觉线索的输入信号.
- 优化的不对称振动增强了视力障碍者触觉导航辅助器的有效性.
- 基于剪切力的触觉反为改善人机交互提供了一个有希望的方向.
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