Exploiting Tactile Map for Visually Handicapped Based on Interactive Tactile Device

提出了一种将触觉图形显示功能和触摸位置感应功能相结合的基本装置。试验装置由两个主要部件组成，一个是触觉图形显示器，一个是力传感器。力传感器测量由触摸作用在显示表面上产生的重心，并且PC基于数据估计该点。实现交互通信的基本功能是检测用户触摸有形表面的位置。通过应用该功能，实现了空手点击和滚动功能。此外，作为该系统的一个应用，实现了一个主要用于克服触觉认知限制的音触图形系统。此外，为了提高易用性，扩大了触觉显示的范围。在此基础上，我们提出了触觉滚动条，用户可以在其中识别自己在平面空间中的位置。通过主观实验验证了所开发的触觉图形系统的有效性。

A basic device combining a tactile graphic display function and a touch position sensing function is proposed. The trial device consists of two major components, a tactile graphic display and a force sensor. The force sensor measures a center of gravity generated by touch action on the display surface and a PC estimates the point based on the data. The fundamental function for achieving the interactive communication is to detect the location where user is touching a tangible surface. By applying this functions, the click and scroll function by an empty hand are realized. In addition, an audio-tactile graphic system which can be used mainly to overcome tactile cognitive limitation is implemented as an application of the system. Moreover, the area of tactile display is expanded for the purpose of improvement usability. Following this, we propose the tactile scrollbar where the users can recognize their position of plane space. The validity of the developed tactile graphic system has been confirmed through subjective experiments.