发表机构
Korea National University of Transportation; University of California; Ajou University; Pohang University of Science and Technology（韩国交通大学; 加州大学; 全州大学; 釜山科学技术大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究旨在开发用于手腕的触觉接口。核心方法是将CASA集成到纺织腕带实现触觉反馈。贡献在于该腕带能平衡功能、可穿戴性与舒适性，完全不受束缚，经实验验证可用于现实世界指导与导航任务，是形式与功能平衡的新型触觉接口。
AI 中文摘要
手腕和前臂的触觉接口为佩戴在手上的设备提供了有吸引力的替代方案，因为它们佩戴简单，让手可以自由与现实世界互动，并且对自然手臂运动的干扰最小。然而，要在现实环境中有用，此类设备必须在功能、可穿戴性和舒适性之间取得平衡，同时完全不受束缚，质量和体积最小。在这项工作中，我们展示了CASAband，一种将柔顺放大形状记忆合金致动器（CASA）集成到多层纺织腕带中的触觉腕带，以提供空间和时间触觉反馈。CASAband完全不受束缚地运行，不产生噪音，总质量为63克。该设备包含四个致动器，可产生高达1.7 N的阻塞力和3.2 mm的自由位移，工作带宽根据施加的电压在1.34 - 6.59 Hz范围内。我们进行了一项感知研究，确定用户可以识别手腕周围单个触觉提示的位置，并以平均超过90%的准确率区分几种图案化提示，这突出表明CASAband可以是一个合适的可穿戴界面，用于为现实世界的指导和导航任务提供信息。为了突出CASAband的潜在用例，我们进行了两次演示：一个拾取和放置任务，用户仅依靠来自主持人的触觉通信，以及一个户外行人导航任务，用户仅依靠手腕上的方向提示。CASAband是首批在形式和功能之间平衡权衡的触觉接口之一，并为现实世界中的触觉反馈带来了新机会。
英文摘要
Haptic interfaces for the wrist and forearm offer an attractive alternative to hand-worn devices as they are simple to wear, leave the hands free for interaction with the real world, and interfere minimally with natural arm motions. To be useful in real-world settings, however, such devices must balance functionality, wearability and comfort, all while being fully untethered with minimal mass and volume. In this work, we present CASAband, a haptic wristband that integrates compliant amplified shape memory alloy actuators (CASA) into a multi-layered textile wristband to deliver spatial and temporal haptic feedback. CASAband operates completely untethered, generates no noise, and has a total mass of 63 g. The device incorporates four actuators that can generate up to 1.7 N of blocked force and 3.2 mm of free displacement with an operating bandwidth ranging from 1.34-6.59 Hz depending on the applied voltage. We conducted a perceptual study and determined that users could identify the location of a single haptic cue around their wrist and discriminate among several patterned cues with over 90% accuracy on average, highlighting that CASAband can be a suitable wearable interface to deliver information for real-world guidance and navigation tasks. To highlight the potential use cases for CASAband, we conducted two demonstrations: a pick and place task where the user relied only on haptic communication from a moderator, and an outdoor pedestrian navigation task where the user relied only on directional cues on the wrist. CASAband is one of the first haptic interfaces that balances the tradeoff between form and function and presents new opportunities for haptic feedback in the real world
