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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 黃光裕 | |
dc.contributor.author | Bin-Yun Chan | en |
dc.contributor.author | 詹秉運 | zh_TW |
dc.date.accessioned | 2021-06-16T09:18:19Z | - |
dc.date.available | 2019-07-20 | |
dc.date.copyright | 2017-07-20 | |
dc.date.issued | 2017 | |
dc.date.submitted | 2017-07-07 | |
dc.identifier.citation | [1] Eargle, J., The Microphone Book 2nd edition, Focal Press, Oxford, 2005.
[2] Kots, A. and Paritsky A., “Fiber optic micropone for harsh environment”, SPIE, Vol. 3852, 1999, pp106-112. [3] Bilaniuk, N., “Optical Microphone Transduction Techniques”, Applied Acoustics, Vol. 50, 1997, pp35-63. [4] Hecht, J.,“Victorian experiments and optical communications”, IEEE Spectrum, Vol. 22, 1985, pp69-73. [5] Frank, W. E.,“Detection and Measurement Device Having a Small Flexible Fiber Transmission Line”, US Patent No. 3273447, 1966. [6] Bucaro, J. A.,Lagakos, N., Houston, B. H., Jarzynski, J., and Zalalutdinov, M., “Miniature, high performance, low-cost fiber optic microphone”, Journal of the Acoustic Society of America, Vol. 118, 2005, pp1406-1413. [7] Sagberg, H., Sudbø, A., Solgaard, O., Bakke, K. A. H., and Johansen, I. R., “Optical Microphone Based on a Modulated Diffractive Lens”, IEEE PHOTONICS TECHNOLOGY LETTERS, Vol. 15, 2003, pp1431-1433 [8] Schreiber, P., Kudaev, S., Rosenberger, R., Dannberg, P., and Höfer, B., “Optisches Mikrofon”, Fraunhofer IOF Jahresbericht, 2003, pp84-87 [9] CD player, Wiki Pedia, https://en.wikipedia.org/wiki/CD_player (網站資訊) [10] Kostner S. and Vellekoop M. J., “Detection of single biological cells using a DVD pickup head,” TRANSDUCERS and EUROSENSORS '07-14th International Conference on Solid-State Sensors, Actuators and Microsystems, 2007, pp. 2123-2126. [11] Kostner S. and Vellekoop M. J., “Detection of single biological cells using a DVD pickup head,” TRANSDUCERS and EUROSENSORS '07-14th International Conference on Solid-State Sensors, Actuators and Microsystems, 2007, pp. 2123-2126. [12] Chieh J-W. and Hung S-K. Transforming a CD/DVD pick-up-head into an accelerometer. In: IEEE/ASME international conference on advanced intelligent mechatronics; 2009. p. 493–7. http://dx.doi.org/10.1109/AIM.2009.5229966. [13] Review: Bose Soundlink mini II, http://www.oluvsgadgets.net/2015/06/review-bose-soundlink-mini-ii.html(網站資訊) [14] Product Review Blue Microphone - Yeti USB Microphone, http://www.laaudiofile.com/bluemic_yeti.html(網站資料) [15] Technical Specification of Blue Yeti , http://www.bluemic.com/products/yeti-pro/(網站資料) [16] Shmilovitz, D., “On the Definition of Total Harmonic Distortionand Its Effect on Measurement Interpretation”, IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 20, 2005, pp526-528. [17] Kinsler, L. E., Frey, A. R., Coppens, A. B., and Sanders, J. V., Fundamental of Acoustics 4th edition, John Wiley & Sons, Inc., 2000. [18] IEC 61842, Microphones and Earphones for Speech Communication. [19] Industrial applications of microphone, https://en.wikipedia.org/wiki/Microphone#Application-specific_designs (網站資料) [20]丁律妏,2014,全像式光學麥克風之設計與開發 ( Design and Development of a Holographic Optical Element Acoustic Microphone),國立臺灣大學機械工程學研究所碩士論文。 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/59230 | - |
dc.description.abstract | 麥克風能夠將聲波轉換成可以分析使用的訊號,但在射頻干擾(EMI)或電磁干擾(RFI)的工作環境下,市面上常見的電容式與動圈式麥克風會因其為電荷傳遞訊號之原理而產生干擾,無法在此環境下運作,而光電麥克風以光作為傳遞訊號的媒介可以避免嚴苛環境的影響。本論文利用像散式光學讀取頭的量測技術,以敏感度高、高解析度等優點開發光電麥克風。
為了瞭解薄膜之各參數如何影響薄膜共振頻以及薄膜振幅,以Ansys模擬軟體對薄膜分別進行夾持距離、厚度及張力變化對共振頻及振幅的影響分析,透過歸納分析數據,找出適合實驗之薄膜參數並且設計互相搭配的麥克風結構。藉由量測光學讀取頭S曲線與線性區域範圍,可建構出聚焦誤差訊號與位移之關係。 本論文以寬度6 mm,厚度0.02 mm的矩形聚對苯二甲酸乙二酯(PET)鍍鋁薄膜及彈簧鋼片作為聲壓傳遞介質,對像散式光學麥克風進行靈敏度、訊噪比、頻率響應及各頻率失真度的性能量測。結果顯示像散式光學麥克風具備高敏感度的特性,在薄膜夾距10 mm及張力50 N/mm2的條件下,PET膜及與鋼膜的光電麥克風敏感度分別為-26.91 dB與-27.89 dB;訊噪比分別為21.02 dB dB與19.03 dB。在頻率響應方面,薄膜夾持距離10 mm時,分別可以清楚解析出PET薄膜第一共振頻為7240 Hz,工作範圍為198 - 6209 Hz;鋼膜第一共振頻4318 Hz,工作範圍為136 - 4598Hz,皆適合應用於人聲交談之170 - 4000 Hz。PET膜及鋼膜之失真度於工作範圍低於10 %。兩薄膜皆可以低失真度量測到高達21 kHz的超聲波。 | zh_TW |
dc.description.abstract | A microphone can transduce sounds into analyzable signals, however, the major products like condenser microphones and dynamic microphones cannot be used under EMI and RFI environments due to its operating principle of transmitting signal by charges. Optoelectronic microphones are immune to these harsh environments as the signal is transmitted by light. This thesis is to design and develop an optoelectronic microphone based on the astigmatic optical pickup head, which has many advantages including a small and compact volume, a high sensitivity, and high displacement resolution.
To understand how diaphragm parameters affect the resonant frequency and displacement, we used Ansys to simulate the variation trend of resonant frequency and displacement of diaphragm to the variation of length, thickness, and tension. Base on the simulation, we designed the microphone structure which is highly compatible to the diaphragm. The astigmatic pickup head measures the S-curve and the linear response region of the microphone, which can then be used to obtain the relationship between focus error signal and displacement. The two rectangular diaphragms with 6 mm width and 0.02 mm thickness are made of polyethylene terephthalate (PET) and steel and used as the mediums for performance measurements. We carried out a series of experiments for the sensitivity, the signal noise ratio, the frequency response and the total harmonic distortion of the optoelectronic microphone. The results show that the optoelectronic microphones have high sensitivity. Given the length of 10mm and the tension of 50 N/mm2 for both diaphragms, the sensitivities of the PET and steel diaphragm are -26.91 dB and -27.89 dB respectively, and the signal to noise ratios are 21.02 dB and 19.03 dB respectively. The frequency response of PET diaphragm induces the first resonance frequency of 7240 Hz and the working frequency of 198 - 6209 Hz. The steel diaphragm has the first resonance frequency of 4318 Hz and the working frequency of 136 - 4598Hz. In which distortion is achieved less than 10 % under both working frequencies. Both diaphragms have the ability to measure supersonic waves at frequency of 21 kHz with low distortion. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T09:18:19Z (GMT). No. of bitstreams: 1 ntu-106-R04522609-1.pdf: 5940282 bytes, checksum: c9fc318997a1d87eecb607bd701be843 (MD5) Previous issue date: 2017 | en |
dc.description.tableofcontents | 口試委員會審定書 i
致謝 ii 摘要 iii 目錄 v 圖目錄 vii 表目錄 ix 符號表 x 第一章緒論 1 1.1 研究背景與動機 1 1.2 文獻回顧 2 1.2.1 光學麥克風 2 1.2.2 光學讀取頭發展及衍生應用 4 1.3 研究目標 7 1.4 內容簡介 8 第二章像散式光電麥克風原理與架構介紹 9 2.1 聲壓感測薄膜架構 11 2.1.1 矩形薄膜 11 2.1.2 薄膜夾持機構 12 2.2 光電量測架構 13 2.3 訊號擷取架構 16 第三章模擬與分析 17 3.1夾持距離對薄膜共振頻及振幅之影響 17 3.2 薄膜厚度對共振頻及振幅之影響 19 3.3 薄膜張力對共振頻、振幅之影響 21 第四章系統與性能測試 24 4.1 像散式讀取頭性能實驗 24 4.1.1 實驗架構 24 4.1.2 校正結果 25 4.2 光電麥克風實體設計 27 4.3 麥克風性能實驗 29 4.3.1 實驗架構 29 4.3.2 敏感度量測 33 4.3.3 訊噪比量測 35 4.3.4 頻率響應 36 4.3.5 失真度 42 第五章結論與未來展望 46 REFERENCE 48 附錄A 像散式光學讀取頭之規格型錄 51 附錄B 雷射位移計規格 52 附錄C PET及鋼膜模擬用之機械性質參數 53 | |
dc.language.iso | zh-TW | |
dc.title | 像散式光電麥克風之設計與開發 | zh_TW |
dc.title | Design and Development of an Astigmatic Optoelectronic
Acoustic Microphone | en |
dc.type | Thesis | |
dc.date.schoolyear | 105-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 蔡得民,林沛群 | |
dc.subject.keyword | 光電麥克風,像散式讀取頭,矩形薄膜,聚焦誤差訊號,頻率響應, | zh_TW |
dc.subject.keyword | optoelectronic microphone,astigmatic pick-up head,rectangular diaphragm,focus error signal,frequency response, | en |
dc.relation.page | 53 | |
dc.identifier.doi | 10.6342/NTU201701384 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2017-07-10 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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