轻量化触觉设备可区分表面与边缘触感，提升虚拟现实操作真实度。
A wearable haptic device for edge and surface simulation
- 采用双电机机制，通过不同刺激模式模拟表面与边缘触感。
- 用户测试中分类准确率达93%，响应时间平均2.79秒。
- 适合需要高精度触觉反馈的虚拟现实交互场景。
物体操作是虚拟现实（VR）应用的核心，但传统指尖触觉设备难以呈现边缘检测等关键触觉特征。本文提出一种紧凑轻便的指尖触觉设备（24.3克），通过新型双电机机制实现表面与边缘接触的可区分反馈。利用6×6柔性传感器阵列对压力分布进行表征，结果显示两种刺激模式具有显著不同的接触模式。五名参与者参与的初步用户研究显示，在四种条件下（轻/重压下的边缘/表面接触），平均分类准确率达到93%，平均反应时间为2.79秒。结果表明，该设备能有效传递边缘与表面触觉线索，有望提升VR环境中物体操作的真实感与精确性。
原文摘要 · Abstract (English)
Object manipulation is fundamental to virtual reality (VR) applications, yet conventional fingertip haptic devices fail to render certain tactile features relevant for immersive and precise interactions, as i.e. detection of edges. This paper presents a compact, lightweight fingertip haptic device (24.3 g) that delivers distinguishable surface and edge contact feedback through a novel dual-motor mechanism. Pressure distribution characterization using a 6 x 6 flexible sensor array demonstrates distinct contact patterns between the two stimulation modes. A preliminary user study with five participants achieved 93% average classification accuracy across four conditions (edge/surface contact with light/heavy pressure), with mean response times of 2.79 seconds. The results indicate that the proposed device can effectively convey edge and surface tactile cues, potentially enhancing object manipulation fidelity in VR environments.
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