Spiral coil beneath fingertip enhances tactile sensation while tracing surface with small undulations
Spiral coil beneath fingertip enhances tactile sensation while tracing surface with small undulations
复制标题
指尖下方的螺旋线圈可增强触感，同时以小起伏描绘表面
DOI：
10.1080/01691864.2020.1860816
复制
发表时间：
2020
影响因子：
2
通讯作者：
Fujimoto Hideo
中科院分区：
文献类型：
--
作者：
Takei Toshinobu;Ni'izeki Tetsuya;Ando Mitsuhito;Mochiyama Hiromi;Imanishi Etsujiro;Fujimoto Hideo
我们发现，放置在指尖下的螺旋线圈在追踪小的起伏表面时增强了触觉。因此，我们研究了增强触觉的机制。我们定量地评估了放大效果，以证明线圈增加了指垫中的触觉。具体来说，我们在螺旋线圈和指尖之间安装了应变计，以测量与跟踪表面时发生变形的皮肤表面的曲率相对应的应变。然后，为了确定线圈的触觉增强机制，我们在不规则表面上移动时对线圈进行建模。相应的仿真结果表明，当线圈元件在不平坦的形状上运动时，线圈元件的倾斜度会发生变化。此外，随着相邻线圈元件的尖端之间的距离增加（减小），皮肤的形状（或曲率）变化，并且附接到线圈的指尖上的皮肤沿着横向方向膨胀（收缩）。因此，指尖上的横向应变被在起伏表面上移动的线圈放大，从而增强触觉。
We found that a spiral coil placed beneath a fingertip enhances tactile sensation while tracing small undulated surfaces. Hence, we investigated the mechanism underlying the enhanced tactile sensation. We evaluated the amplification effect quantitatively to demonstrate that the coil increases the tactile sensation in the finger pad. Specifically, we installed a strain gauge between the spiral coil and the fingertip to measure the strain corresponding to the curvature of a skin surface that undergoes deformation when tracing the surface. Then, to determine the enhancing mechanism of tactile sensation by the coil, we modeled the coil while moving on a surface with irregularities. The corresponding simulation results show that the inclination of the coil elements changes while moving on uneven shapes. Furthermore, as the distance between the tips of adjacent coil elements increases (reduces), the shape (or curvature) of the skin varies, and the skin on the fingertip attached to the coil expands (contracts) along the lateral direction. Therefore, the lateral strain on the fingertip is amplified by the coil moving on an undulated surface, thus enhancing tactile sensation.