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| 研究生： |
鍾家軒 Zhong, Jia-xuan |
|---|---|
| 論文名稱： |
微控制器結合GPS與水深感測器之水下地貌量測系統整合開發 An underwater geological survey system by integrating microcontroller, GPS module and acoustic transducer |
| 指導教授： |
趙儒民
Chao, Ru-Min |
| 學位類別： |
碩士 Master |
| 系所名稱： |
工學院 - 系統及船舶機電工程學系 Department of Systems and Naval Mechatronic Engineering |
| 論文出版年： | 2008 |
| 畢業學年度： | 96 |
| 語文別： | 中文 |
| 論文頁數： | 113 |
| 中文關鍵詞： | 微控制器 、水聲感測器 、測深儀 、系統整合 |
| 外文關鍵詞： | System integration, Underwater acoustic transducer, Micro-controller, Echo sounder |
| 相關次數： | 點閱：73 下載：4 |
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本研究之目的為協助開發水下地貌量測系統；透過測得的水深與方位資訊，組成水下地貌資訊。在硬體方面，本文著重水深量測系統的整合與開發，使用LM1812晶片之驅動電路與市售TC-2111等水聲感測器，透過200kHz的超音波以探測水域深度。吾人先以電腦搭配資料擷取設備以及LabVIEW虛擬儀控程式，針對驅動電路的波形特性進行實驗與開發演算邏輯，後將演算邏輯轉移至以P8X32A微控制器為核心的系統上，故分別提出了「以電腦為基礎」及「以微控制器為基礎」的兩種不同的架構，並分別探討各硬體配置的特性、整合之間的關聯與其應用上的限制。軟體方面，提出了「加入遮罩」、「設立回波持續時間門檻」與「三次綜合分析」等策略以增強系統效能。此外，本系統亦整合了其他GPS接收器與SD記憶裝置，可將水域深度與量測位置的資訊結合，即時顯示在LCD螢幕上並儲存於SD卡中，故可將實驗記錄匯入電腦進行後處理分析，並以軟體繪製水下地貌。本研究之成果亦可提供未來水下載具之測距與避碰研究之基礎。
The purpose of this study is to develop an underwater geological survey system by integrating a self-developed echo sounder and a global positioning system. In the hardware implementation, we take fully advantage of LM1812 from National Semi-conductor and TC-2111 transducer operating at 200kHz to build the echo sounder for detecting water depth. Data acquisition is first done by a PC based LabVIEW environment to understand the character of sound wave in water channel and to process the signal by the proposed algorithm in order to detect the depth of water. Later, the entire computer algorithm is transferred to the Parallax P8X32A microcontroller for system integration. For signal processing, we have proposed a series of ‘mask shading’, echo-duration threshold’ and ‘3-time majority’ computing algorithms to enhance the accuracy of the self-developed echo sounder. Finally, the echo sounder is integrated with a commercial type of GPS, a LCD display and a SD memory board where the experiment information for water depth and geological information can be saved for post-processing of the underwater terrain information. This work can also be used as an underwater acoustic detector while developing a collision avoidance system for an autonomous underwater vehicle.
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校內：2010-08-28公開校外：2010-08-28公開