電觸覺滑鼠與視覺迴授之互動裝置研究

Abstract

感覺(Haptic)迴授其包含了動覺 (Kinesthetic)迴授與觸覺(Tactile)的迴授合成，觸覺迴授的技術大多需以大量的機械驅動器來達到觸覺及材質的重現，因此系統架構龐大且控制複雜，而經電觸感(Electro-Tactile)的技術可直接在皮膚表面給予局部的電流傳導到神經，不需機械式的元件做動來達到觸覺迴授的功能。 現今電子科技的進步，經電觸感的裝置可容易的被製作與控制來達到經電觸感迴授的功能，唯經電觸感迴授不同機械式的觸覺迴授，在不同人的皮膚的特性與感受度有相當大的個體差異，因此在電流刺激的模式與控制上仍有相當大的研究空間，然其結構最簡單，尺寸最小，耗能最小的特性仍被認為是未來最適合作為觸覺迴授的發展趨勢。 參考美國及日本等學術及研究機構的研究結果與經電觸感的裝置設計，在有限的資源下，本研究嘗試整合以低成本的硬體架構之經電觸感迴授裝置於於游標裝置（滑鼠）上，藉由直覺式的操作同時進行電觸覺的迴授，其迴授的機制基於游標所在位置的像素顏色值來對應成輸出的電流模式，使操作者在操作電腦的同時能有邊界觸覺的迴授效果，達到互動式觸覺迴授之應用。

Haptic Feedback is the synthesis of the Kinesthetic and Tactile feedback. Most techonologies to apply tactile feedback required a large amount of actuators drive to achieve the sense of touch and with complex control and lot of mechanical parts necessary. Electro-Tactile, by the mature technology of electronics, it can be easily achived by few electronic components to apply localize electric current to the skin surface and excite the nerve conduction to produce sense of tactile without moving mechanical components . The main issue is the sensation excited by electric current can be big differences between various people. Thus, researchers are continuesly to investigate the ideal stimulus current model for more reality tactile feedback and widely suitable for most people. But with the advantages of electro tactile device with most compact device, no moving parts, can be easily controlled still make it the trend to develop in tactile feedback applications. In this study, we integrated the electrotactile with pointing device by low cost hardware structure under limited resources. With the user interface design, and calculate the color difference from former cursor position to current. Then with a simple algorithm mapping to output the electric current to finger tips for an interactive boundary tactile feedback application.