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博碩士論文 etd-0727103-153305 詳細資訊
Title page for etd-0727103-153305
論文名稱
Title
自主式淺海聲學記錄器之研發
Development of Autonomous Shallow Water Acoustic Logger
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
71
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2003-06-19
繳交日期
Date of Submission
2003-07-27
關鍵字
Keywords
取樣頻率、聲納浮標、LabVIEW、水下麥克風
Sampling Rate, Sonobuoy, LabVIEW, Hydrophone
統計
Statistics
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The thesis/dissertation has been browsed 5737 times, has been downloaded 6553 times.
中文摘要
聲納浮標起源於軍事上潛艦的偵測,而在學術上也被應用於量測海洋聲學訊號,然而早期聲納浮標在資料的設計,並不適合作長期、計劃性的觀測。因此本研究整合現有商業組件,來發展自主性高,利於淺海量測之聲學記錄器,此系統適於調查近岸船舶噪音及海洋生物聲學訊號。本研究在電子設計上以個人電腦主機板為架構,訊號最大取樣頻率為44.1 kHz,儲存資料能力為40 GB,在錄音方面搭配即插即用的水下麥克風組,並以LabVIEW程式撰寫人機介面,做為錄音控制。本系統除了具可程式資料擷取能力及成本低廉的優點外,在面對不同的佈放需求時,也具有彈性化的設計,允許系統擴充及調整,甚至可同時紀錄多組接收器的資料。

Abstract
The sonobuoy originated from military submarine detection,it was also used to measure ocean acoustic signal by scientists,but the continuous recording and transmitting design by early sonobuoy is not suitable for long-term or scheduled observations. In this research,“off the self” components were integrated to develop an autonomous sonobuoy,which can be used to measure shipping noise and marine life acoustic signal in coastal water. The electronic design is based on a PC motherboard,it is currently configured with a maximum sampling rate of 44.1 kHz,and a maximum storage capacity of 40 GB. The sound was collected by a plug and play hydrophone system,which is controlled by a program written by LabVIEW. In addition to the programmable data acquisition and low cost advantages,the flexible design allows quick system expansion and adjustment,it can also be configured to record from multiple transducers.

目次 Table of Contents
摘要............................................................i
目錄............................................................iii
圖目錄..........................................................vi
表目錄..........................................................x
第一章 緒論.....................................................1
1.1 研究背景....................................................1
1.2 相關文獻....................................................2
1.2.1 繫纜量測系統..............................................2
1.2.2 海床固定量測系統..........................................3
1.2.3 聲納浮標量測系統..........................................4
1.3 研究目標....................................................7
1.4 本文架構....................................................9
第二章 研究方法.................................................10
2.1 聲納浮標改造................................................10
2.1.1 聲納浮標訊號分析......................................13
2.2 單板電腦應用................................................15
2.2.1 測試之水下麥克風..........................................15
2.2.2 資料擷取卡選擇............................................16
2.2.3 前置放大器設計............................................20
2.2.4 控制軟體..................................................24
2.3 測試評估....................................................28
第三章 系統設計.................................................29
3.1 硬體規劃....................................................30
3.2 個別組件....................................................30
3.2.1 水下麥克風選擇............................................30
3.2.2 訊號擷取平台選擇..........................................32
3.2.3 電源供應..................................................34
3.3 控制程式撰寫................................................37
3.4 外體結構設計................................................39
3.5 耐熱測試....................................................43
3.6 分析系統....................................................44
第四章 測試與結果分析...........................................45
4.1 系統校正....................................................45
4.1.1 水槽測試..................................................46
4.1.2 校正程序..................................................47
4.2 實海測試....................................................48
4.3 測試訊號分析................................................50
4.3.1 船舶噪音..................................................51
4.3.2 槍蝦噪音..................................................54
4.4 系統雜訊....................................................55
第五章 結論與建議...............................................56
5.1 成果探討....................................................56
5.2 未來發展....................................................57
參考文獻........................................................58
附錄1 文字檔資料擷取............................................60
附錄2 二進位資料擷取............................................61
附錄3 二進位轉文字檔............................................62
附錄4 連續錄音..................................................63
附錄5 間斷錄音..................................................67
附錄6 聲音擷取記錄表............................................71
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