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研究生: 楊松益
Yang, Sung-I
論文名稱: 高精度微小型傾斜感測器之設計與製作
Design & Fabrication of High-Precision Micro Inclination Sensors
指導教授: 李國賓
Lee, Gwo-Bin
學位類別: 碩士
Master
系所名稱: 工學院 - 工程科學系碩士在職專班
Department of Engineering Science (on the job class)
論文出版年: 2004
畢業學年度: 92
語文別: 中文
論文頁數: 87
中文關鍵詞: 接觸角水銀液滴微電極微機電系統傾斜感測器
外文關鍵詞: Inclination sensor, MEMS, contact angle., mercury, microelectrodes
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  •   傾斜感測器應用於檢測水平位置,對於土木建築工程、機械工作平台以及汽車防盜裝置,是一不可或缺之儀器。本研究乃利用微機電系統之設計及製程技術,設計及製作一新式傾斜角度感測器。而感測器之製作,首先於玻璃基材之表面研磨一圓弧面,並於圓弧面上佈置正負電極導線,接著將水銀液滴滴入圓弧面之底端以達到平衡。當水銀液滴接觸兩正負電極,電流隨即通過水銀液滴本身,並經由電路系統顯示傾角數值,如此便可定位出水銀所傾斜的位置角度。
      本研究所提出之新式傾斜角度感測器乃應用微機電系統之設計及製程技術,成功地改善傾斜感測器之關鍵技術,將水銀液滴之接觸角由130度增加到140 度,且縮小感應電極之間距,可提升感測器之解析度至0.2度。此外,做為感測原件之水銀液滴,是以重力來做為移動方式,故可避免因外在因素如溫度、電磁力、電波等變化而影響傾斜感測器之準確度。
      而利用微機電系統之設計及製程技術來製作傾斜角度感測器,除使用較簡單的設計方式來達到高精度的角度感測,相較於市面上販售的感測器結構更為簡單,更可應用於批製造以降低成本。

      The present study reports a new micromachine-based inclination sensor which could be used to measure the level of inclination in fields of civil engineering, mechanical engineering, auto-making and many others.The sensor is designed and fabricated by using MEMS (Micro-Electro-Mechanical-Systems) technology. The inclination sensor is fabricated on a glass substrate with a curved geometry. Then
    microelectrodes are patterned on the curved surface. A drop of mercury is dripped at the bottom of the curved surface.The location of the mercury drop is then displayed using LED (Light Emitting Diode) to indicate the inclination while a driving current passes through the mercury drop and the electrodes.
      The new inclination sensors have been successfully characterized to have a resolution of 0.2°. A surface treatment has been applied to increase the contact angle between the mercury drop and the glass substrate from 130 ° to 140 ° such that the developed sensor could have a higher sensitivity. To improve the resolution and sensitivity of the inclination sensors, the layouts of the microelectrodes is optimized. Beside, a control circuit has been designed and used to integrate with the inclination sensor. The development of the micro inclination sensor could be promising for measurement of the inclined angles for different fields.

    中文摘要……………………………………………I 英文摘要……………………………………………Ⅱ 誌謝…………………………………………………Ⅳ 目錄…………………………………………………V 表目錄………………………………………………Ⅸ 圖目錄………………………………………………Ⅹ 符號說明……………………………………………XIV 第一章 序論 …………………………‥……………1 1-1 前言……………………………………‥………1 1-2 微機電系統簡介…………………………………2 1-3 感測器文獻回顧…………………………………3 1-3-1 水銀開關傾斜感測器…………………………3 1-3-2 發光二極體之光學式傾斜感測器……………4 1-3-3 熱反應型加速規傾角感測器…………………4 1-4 研究動機與目的…………………………………5 1-5 研究方法與架構………………‥………………7 第二章 感測器之設計 ………………………………9 2-1 設計槪念…………………………………………9 2-2 傾斜感測解析度設計……………………………10 2-2-1 玻璃表面弧度設計……………………………10 2-2-2 液態導電物質選擇……………………………11 2-2-3 金屬電極材質選用……………………………11 2-3 固-液-氣化學介面………………………………12 2-3-1 物質表面張力…………………………………12 2-3-2 物質潤濕現象與接觸角關係…………………12 2-3-3 蓮花效應與表面粗糙度………………………15 2-4 電極導線圖案設計………………………………17 2-5 晶片封裝設計……………………………………18 2-5-1 水銀液滴截取…………………………………18 2-5-2 導線及玻璃封裝設計…………………………19 2-6 電路設計…………………………………………20 2-6-1 顯示電路圖及程式說明………………………20 第三章 感測器之製作 ………………………………21 3-1 微機電系統製作流程……………………………21 3-2 光罩製作技術……………………………………21 3-3 晶片製程技術……………………………………22 3-3-1 晶片清洗………………………………………23 3-3-2 微影技術………………………………………23 3-3-3 金屬蒸鍍………………………………………26 3-4 晶片製作流程……………………………………26 3-5 電路板製作………………………………………30 第四章 結果與討論 …………………………………32 4-1 傾斜感測器實驗設備架設………………………32 4-2 傾斜感測器測量結果與討論……………………33 4-2-1 單軸式傾斜感測器……………………………34 4-2-2 原點回歸式傾斜感測器………………………35 4-2-3 同心圓式傾斜感測器…………………………36 4-3 商品化的應用……………………………………37 第五章 結論與未來展望 ……………………………40 5-1 結論………………………………………………40 5-2 未來展望…………………………………………41 參考文獻………………………………………………43 附錄一 原點回歸式傾斜感測器8051 晶片程式碼…83 簡要自述‥……………………………………………87

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