電容式觸控感測原理與應用

電容式多點觸控面板為近年來相當熱門的一種人機介面，其零磨損的機械結構與方便易用的多指手勢操作方式已成為目前智慧型行動電話與平板電腦的主流操作介面，其感測方法是以量測面板電容值的變化量來偵測手指位置與移動路徑。本文第一部份簡介各種常見的觸控感測技術以及電容式觸控的原理與感測器結構。在各種不同的觸控感測技術中，投射電容式觸控面板的測試方法亦相當特殊，觸控面板的暇疵檢測可由觸控晶片本身配合內嵌的韌體來完成。本文第二部份介紹投射電容式觸控面板的線上檢測原理(In-System-Testing)。現今的投射電容式感測技術已可支援多點觸控，加上手勢的辦識，可以讓這種新的操作介面變得更為豐富易用。觸控板的應用領域目前多局限於與應用程式的圖形介面互動，在機器人這個領域，僅有少數應用於控制輪形機器人作前後左右移動，尚未應用於機械手臂的控制，原因不外乎觸控面板僅能提供2D的資訊，對於有六個自由度的機械手臂，無法直接提供足夠的控制資訊，現在有了多點觸控手勢的加持，則讓機械手臂的操作方式有了新的可能。本研究開發一套創新的機器人操作介面，使用投射電容式多點觸控面板控制具有6個自由度的機械手臂。本文第三部份將介紹觸控式機械手臂的軟硬體架構與操作方式，並討論實驗結果。

關鍵字

電容式觸控；投射式電容；多點觸控；觸控手勢；觸控式機器手臂

並列摘要

The capacitive touch panel is a very popular human-machine interface in recent years. Not only without any movable parts, it’s mechanical structure never wear, but also intuitive operation interface to make it very easy to use. Therefore, capacitive touch panel has become the major interface of smart phone and tablet PC. It’s sensing scheme is to measure the capacitance variance of touch panel to detect finger position and movement. The first part of this paper is to introduce some most popular touch control technology and the structure of capacitive touch sensor. The testing of capacitive touch sensor is another special part of this industry. It is implemented in touch controller itself. The second part of this paper is to introduce principle of in-system-testing of capacitive touch panel. Most of touch panel application is interact with application software. In robot control field, only a few of application control 2D movement of wheeled robot, no any application control a robot with 6-DOF. Reason is significant,touch panel can provide 2D information only. Thanks to multi-touch and gesture recognition technology. It brought a new possibility for robot operation. A novel operation interface of 6-DOF robot is introduced in this paper. The structure of touch controlled robot and experiment results are described in the third part of this paper.

並列關鍵字

Capacitive touch ； Projected Capacitance ； Multi-Touch ； Touch Gesture ； Touch Controlled Robot

參考文獻

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[5] Siam Charoenseang, Khanchai Kingkangwan, "Augmented Control for Mobile Robot using PocketPC", International Conference on Robotics and Biomimetics, Bangkok, Thailand, 2009, pp. 1433-1437.

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