Mid-Air Thermo-Tactile Feedback using Ultrasound Haptic Display
Mid-Air Thermo-Tactile Feedback using Ultrasound Haptic Display
复制标题
使用超声波触觉显示器的空中热触觉反馈
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Jin Ryong Kim
中科院分区：
文献类型：
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作者：
Yatharth Singhal;Haokun Wang;Hyunjae Gil;Jin Ryong Kim
本文提出了一种使用超声波触觉显示器的空中热触觉反馈系统。我们设计了一个概念验证热触觉反馈系统，具有顶部开放的室、加热模块和超声波显示器。我们的方法是沿着超声波显示器产生的聚焦压力点的路径提供加热气流，以在半空中同时产生热和振动触觉提示。我们确认，当超声波触觉信号设置为 100 Hz、提示尺寸半径为 12 mm 时，我们的系统可以生成高达 54.2°C 和 3.43 mN 的热触觉刺激。我们还确认我们的系统可以提供稳定的温度（平均误差=0.25%）。我们测量热检测阈值 (WDT) 和热痛检测阈值 (HPDT)。结果表明，平均 WDT 为 32.8°C (SD=1.12)，平均 HPDT 为 44.6°C (SD=1.64)，与基于接触的热阈值一致。我们还发现，触觉模式识别的准确性在非热条件（98.1%）和热条件（97.2%）下相似，表明高温的影响不显着。我们最终确认热触觉反馈可以进一步增强用户体验。
This paper presents a mid-air thermo-tactile feedback system using an ultrasound haptic display. We design a proof-of-concept thermo-tactile feedback system with an open-top chamber, heat modules, and an ultrasound display. Our approach is to provide heated airflow along the path to the focused pressure point created from the ultrasound display to generate thermal and vibrotactile cues in mid-air simultaneously. We confirm that our system can generate the thermo-tactile stimuli up to 54.2°C with 3.43 mN when the ultrasonic haptic signal was set to 100 Hz with a 12 mm radius of the cue size. We also confirm that our system can provide a stable temperature (mean error=0.25%). We measure the warm detection threshold (WDT) and the heat-pain detection threshold (HPDT). The results show that the mean WDT was 32.8°C (SD=1.12), and the mean HPDT was 44.6°C (SD=1.64), which are consistent with the contact-based thermal thresholds. We also found that the accuracy of haptic pattern identification is similar for non-thermal (98.1%) and thermal conditions (97.2%), showing a non-significant effect of high temperature. We finally confirmed that thermo-tactile feedback further enhances the user experiences.