具有一維分辨力之防護電容式近物感測器

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姓名

劉士弘(Shih-hong Liou) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

具有一維分辨力之防護電容式近物感測器
(Guarded Capacity Proximity Sensor with One-Dimension Differentiation)

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摘要(中)

由於電容式感測器在電極片感測面積內無法分辨物體位置，此一限制使感測器只能夠分辨物體的有無，而近年來的研究已經可以分辨不同物體的影響，例：不同的厚度、不同的介電質，而本研究提出一具一維分辨力之防護電容式近物感測器的架構和實驗結果，在這個感測器中，我們的感測電路，增添了差動模式和整合模式，而在感測探頭中，包含了二個感測平面，此二個感測平面可使用差動模式來了解物體的水平位置，而二個感測平面可成為一個感測探頭，此一感測探頭可利用整合模式來感測物體整體影響感測器的強弱，此二種模式的結合可以讓我們的感測器具有一維分辨力，再配合上電容反射器(Capaciflector)以減少旁路電容的影響，以提升靈敏度。這個感測器的優點是不同於以往必需要依賴陣列式的排列才可以知道物體的位置，而只要物體在感測平面上就可以分辨一維水平位置，在未來的展望上可以利用此種感測器應用於動物行為研究或是人體偵測以達到更精確的偵測。

摘要(英)

Capacitive proximity sensor offers the advantage that allows the relatively large sensing area with the same size of the single sensor. So it is difficult to detect position of the object with single sensor. The capacitive proximity sensor usually detects the character of the object like different thickness and different dielectric. It is also can detect proximity of the object.
In this paper, we proposed and demonstrated a guarded capacitive proximity sensor with one-dimensional differentiation which includes a differential mode and a summation mode. The sensing probe uses two sensor planes to facilitate the differential mode to indicate relative location of the object on the sensor plane. The two sensor planes can be used as a sensing element to facilitate the summation mode to sense the property or the distance of the object. The two modes combined enable the one-dimensional differentiation. This sensor improves its sensing ability by incorporating a capaciflector to restrain stray capacity. The sensor can be used to detect either the one-dimensional position or the thickness of a target object.

關鍵字(中)

★ 電容式
★ 近物感測器

關鍵字(英)

★ proximity sensor
★ capacity

論文目次

I 導論 ............................................................................................................................. 1
II 感測器架構 ................................................................................................................ 4
A.整合模式（summation mode） ........................................................................ 8
B.差動模式（differential mode） ...................................................................... 10
C.電容反射器和地端隔離板.............................................................................. 12
III.實驗設定................................................................................................................. 13
A.架構 ................................................................................................................. 14
B.方法 ................................................................................................................. 15
IV.結果 ......................................................................................................................... 15
V.結論 .......................................................................................................................... 40
參考文獻...................................................................................................................... 41
Appendix: English Version.................................................................................... 44
Section I. Introduction ................................................................................................. 44
Section II. sensor structure ........................................................................................... 47
A. Summation mode ............................................................................................ 50
B. Differential mode ............................................................................................ 52
C. Capaciflector and Ground plane ...................................................................... 54
Section III. Experiment ................................................................................................ 56
A. Experiment setup............................................................................................. 57
B. Experiment procedure ..................................................................................... 57
Section IV. Result ......................................................................................................... 65
Section V. Conclusion .................................................................................................. 69
Reference ..................................................................................................................... 70

參考文獻

[1] N.L. Buck, and R.A. Aherin, “Human presence detection by a capacitive proximity sensor”, American Society of Agriculture Engineers, Volume 7, Issue 1, Pages 55-60, January 1991.
[2] S. W Badelt, and A. P Blaisdell, “Capacitive sensors for detecting proximity and response”, Behavior Research Methods, Volume 40, Issue 2, Pages 613-621, May 2008.
[3] Hyung-Kew Lee, Sun-Il Chang, and Euisik Yoon “A Capacitive Proximity Sensor in Dual Implementation with Tactile Imaging Capability on a Single Flexible Platform For Robot Assistant Applications” IEEE International Conference on MEMS, Pages 606-609, January 2006.
[4] William Buller, and Brian Wilson, ”Measurement and Modeling Mutual Capacitance of Electrical Wiring and Humans”, IEEE Transactions on Instrumentation and Measurement, Volume 55, Issue 5, Pages 1519-1522, October 2006.
[5] Junichi Kurata, Kenneth T. V. Grattan, Hironobu Uchiyama, and Teruo Tanaka, “Optical proximity sensor that uses a laser-scanning system”, Applied Optics, Volume 30, Issue 28, Pages 4060-4065, October 1991.
[6] C. H. Lee, and S. D. Allen, “Noncontact single-fiber-optic proximity sensor using a laser-fabricated tap”, Applied Optics, Volume 36, Issue 10, Pages 2217-2221, April 1997.
[7] V. Genovese, E. Guglielmelli, A. Mantuano, G. Ratti, A.M. Sabatini, and P. Dario, “Low-cost, redundant proximity sensor system for spatial sensing and colour perception”, Electronics Letters, Volume 31, Issue 8, Pages 632-633, April 1995.
[8] En-Chen Chen, Shin-Rong Tseng, Jia-Hong Ju, Chia-Ming Yang, Hsin-Fei Meng,Sheng-Fu Horng, and Ching-Fong Shu, “Polymer infrared proximity sensor”, Applied Physics Letters, Volume 93, Issue 6, Pages 063304 (3)pages, Auguest 2008.
[9] D. Esinenco, E. Budianu, I. Bineva, D. Andrijasevic, E. Manea, W. Brenner, and R. Muller, “Integrated optical proximity microsensor”, Journal of Luminescence, Volume 121, Issue 2, Pages 394-398, September 2006.
[10] Allan Gu, Member, and Avideh Zakhor, “Optical Proximity Correction With Linear Regression”, IEEE Transactions on Semiconductor Manufacturing, Volume 21, Issue 2, Pages 263-271, May 2008.
[11] Kofi D. Anim-Appiah, and Sedki M. Riad, ”Analysis and design of ferrite cores for eddy-current-killed oscillator inductive proximity sensors”, IEEE Transactions on Magnetics, Volume 33, Issue 3, Pages 2274-2281, May 1997.
[12] Bartoletti C, Buonanni R, Fantasia LG, Frulla R, Gaggioli W, and Sacerdoti G, “The design of a proximity inductive sensor”, Measurement Science & Technology, Volume 9, Issue 8, Pages 1180-1190, August 1998.
[13] Zhenhai Chen, and Ren C. Luo, “Design and implementation of capacitive proximity sensor using microelectromechanical systems technology”, IEEE Transactions on Industrial Electronics, Volume 45, Issue 6, Pages 886-894, December 1998.
[14] John M. Varnish, Robert L. McConnell, and Swami Mahalingam, “Capaciflector collsion avoidance sensors for robots”, Computers & Electrical Engineering, Volume 17, Issue 3, Pages 173-179, April 1991.

指導教授

蔡章仁(Jang-Zern Tsai)

審核日期

2009-8-26

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