臺灣博碩士論文加值系統

觸控應用在生活中極為普及化，且提供大家多種類的服務及內容，並改善人類生活的便利性，但大多的觸控技術都需要使用大量的感測器，其成本昂貴、觸控時易受外在環境因素影響，而本論文發展符合低成本、結構簡易、高精度的應變式觸控面板，且維持原來的觸控方式。本研究之應變式觸控面板是由壓克力板(其一為底座)、四個壓克力方塊及四個單軸式應變規所組成，壓克力板尺寸為A4大小，其厚度為最薄之可用厚度，約為2mm厚，底座部分則為B4尺寸，厚度約為15mm厚，而面板其四個邊中間各黏貼一個壓克力方塊與單軸式的應變規，使其以二維的方式做為量測平面。在實驗演算法部分我們首先量測單一軸方向兩個應變規的值藉此觀察變化，由量測結果發現兩應變規符合力矩平衡原理，並經由ANSYS確認其應變之黏貼位置與實驗演算法之可行性。而其觸控座標我們以應變規位置作為原點，將面板X軸座標值分為27cm，而Y軸距離則為18cm，作為整個面板的量測範圍，量測則以1cm為級距。透過實驗我們得到的可用之線性範圍，X軸為5~23cm，Y軸則為5~14cm，由此範圍所得到實驗之量測數據，並將其延伸至雙軸座標之應用，最後運用兩軸之相減值作為實驗之演算法。
演算法程式我們使用LabVIEW作為觸控面板與CompactDAQ資料擷取系統之人機介面，其具有偵測面板座標位置與控制鼠標功能，而藉由實驗計算單軸與雙軸座標之定位精度可以達到1cm以內，且誤差值在應用上為可接受範圍，而透過上述方式使我們可達到觸控面板之目的。

The application of touch technology is more and more common in our life. It offers people various service and details and increases the convenience in human life. But most of them need numerous detectors, they are expensive and easily influenced by external factors. So my paper aims to develop the touch panel which is fit low cost, easy structures, high precision, and it can maintain its original way to touch.In this, Strain-touched panel consist of PMMA(one is the foundation), four PMMA cubes and four uniaxial gauges. The PMMA’s size equals A4, the thickness are about 2mm, the one use as base is equals B4, the thickness is about 15mm. Stick one PMMA cube and uniaxial strain gauge in the center of each sides of the pad, make it to use the way of Two Dimension to do Coordinate Measuring.In the experimental of the algorithm, first we measure the value of two strains and the single axis direction to observe the change. So we can find that the two strain gauge fit the Balance of Couples Principle. We confirm the location where we stick and the experimental algorithm via the ANSYS.As to the coordinate of touch panel, we use the location of strain gauge as the origin, set 27 cm as the value of panel X coordinate while the Y coordinate is 18cm. Then take them to become the range of measure to the whole panel, set 1 cm as the numerical range of measure. Through the experiment, we get the useful linear range, the X coordinate is 5-23cm, the Y coordinate is 5-14cm. With those results, we get our data of the experiment and use this data the application of biaxial coordinate. Finally, the use the result of biaxial subtraction to be experiment algorithm.
We use the LabVIEW algorithm program to be the HMI of touch panel and Compact DAQ data acquisition system. It has both panel location-detected and mouse controlling. We also find its inaccuracy less than 1cm (acceptable range) through the compute. In sum, we can achieve our goal via above-mentioned.

摘要 i
ABSTRACT ii
誌謝 iii
目錄 iv
表目錄 viii
圖目錄 ix
第一章、緒論 1
1.1前言 1
1.2研究目的 2
1.3研究方法 3
1.4論文架構 5
第二章、研究背景介紹 6
2.1觸控面板簡介 6
2.2觸控式面板技術與分類 9
2.2.1電阻式觸控面板 9
2.2.2電容式觸控面板 11
2.2.3光學(紅外線)式觸控面板 12
2.2.4超音波式觸控面板 13
2.2.5電磁式觸控面板 14
2.3觸控面板相關文獻 15
2.3.1電阻式觸控面板文獻 15
2.3.2電容式觸控面板文獻 17
2.3.3光學(紅外線)式觸控面板文獻 19
2.3.4超音波式觸控面板文獻 21
2.3.5電磁式觸控面板文獻 23
2.3.6應變規應用文獻 24
2.4觸控面板技術比較與未來趨勢 26
第三章、應變式觸控面板之原理與設計 28
3.1應變規簡介 28
3.1.1應變規結構與分類 29
3.1.2應變與應力 31
3.1.3應變規原理 33
3.1.4惠斯登電橋 34
3.1.5惠斯登電橋之電路平衡 37
3.2應變式觸控之實驗演算法 38
3.2.1 面板之設計評估 38
3.2.2演算法公式定義 39
3.2.3面板應變分析 43
3.2.4面板應變分析結果 45
3.2.5演算法推導之結果 53
3.2.6演算法推導補充 59
3.3實驗硬體設備 60
3.3.1個人電腦(PC) 61
3.3.2應變式觸控面板 62
3.3.3 NI CompactDAQ資料擷取模組 64
3.3.4 NI CompactDAQ機箱 67
第四章、軟體架構與實驗結果 68
4.1軟體介紹 68
4.2觸控程式介紹 68
4.2.1歸零程式撰寫 68
4.2.2主程式架構 69
4.2.3人機介面(HMI) 72
4.3實驗結果與討論 74
4.3.1單軸座標定位實驗結果 74
4.3.2雙軸座標定位實驗結果 78
4.3.3結果與討論 85
第五章、結論與未來展望 86
5.1結論 86
5.2未來展望 88
參考文獻 89

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