Multiple Remote Vibrotactile Noises Improve Tactile Sensitivity of the Fingertip via Stochastic Resonance
Multiple Remote Vibrotactile Noises Improve Tactile Sensitivity of the Fingertip via Stochastic Resonance
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DOI：
10.1109/access.2021.3053297
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发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
Shohei Ikemura;T. Endo;F. Matsuno
中科院分区：
文献类型：
--
作者：
Shohei Ikemura;T. Endo;F. Matsuno
本文提出了一种通过在远离指尖的位置放置多个振子来提高指尖触觉灵敏度的方法。已知当振动触觉噪声被施加到指尖或远离指尖的位置（诸如手腕）时，指尖的触觉灵敏度提高。这是随机共振在触觉领域的应用。在这项研究中的初步实验表明，通过远程振动触觉噪声的指尖的触觉灵敏度的改善取决于在人体皮肤上的振动的传播。根据初步实验的结果，预期到达指尖的噪声越大，可检测的输入越小。因此，我们认为，多个振动器在远程位置可以传播更大的噪声到指尖，并进一步提高指尖的触觉灵敏度相比，使用只有一个振动器发生在以前的研究。进行有限元分析，使来自多个振动器的噪声在指尖适当叠加。为了同步来自多个振动器的噪声到达指尖，我们确定了振动器的位置和每个振动器开始产生噪声的时间。主题实验的结果证实，与没有SR的情况或仅使用一个振动器的情况相比，所提出的方法显著提高了指尖灵敏度。
This paper proposes a method to improve the tactile sensitivity of the fingertip by placing multiple vibrators at a remote position away from the fingertip. It is known that a fingertip’s tactile sensitivity improves when vibrotactile noise is applied to the fingertip or to a position away from the fingertip, such as the wrist. This is the application of stochastic resonance to the field of haptics. Preliminary experiments in this study have shown that the improvement of a fingertip’s tactile sensitivity via remote vibrotactile noise depends on the propagation of the vibration on human skin. From the results of the preliminary experiments, it is expected that the larger the noise reaching the fingertip, the smaller the detectable input. Therefore, we consider that multiple vibrators at a remote position can propagate a larger noise to the fingertip and further improve the fingertip’s tactile sensitivity compared to the use of only one vibrator as occurred in a previous study. Finite element analysis was performed so that the noises from multiple vibrators were properly superimposed at the fingertip. To synchronize the arrival of the noises at the fingertip from the multiple vibrators, we determined the positions of the vibrators and the time when each vibrator started generating noise. The results of a subject experiment confirmed that the proposed method significantly improved fingertip sensitivity compared to the case without SR or the case where only one vibrator was used.