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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/32899

Title: 「水下壓電式T型二維步進相移陣列超音波發射接收系統(II)」
Fabrication and characterization of stepping phased-array ultrasonic transponder system with T type piezoelectric elements
Authors: 張忠誠
Contributors: NTOU:Department of Electrical Engineering
Date: 2009
Issue Date: 2012-06-18T07:48:03Z
Publisher: 第十一屆水下技術研討會暨國科會成果發表會論文集
Abstract: 為了提升水下搜尋之技術,本研究藉由自行製作超音波陣列系統進行壓電片換能器之陣列
訊號傳給其他模組,完成成像及影像處理之工作。本實驗已設計發射和接收 600kHz 共振頻率
之壓電陶瓷片陣列,並利用依照 MATLAB 模擬陣列波束,取得最佳化 19 元素陣列參數,並實
際製作 T 型發射接收超音波換能器陣列。所結合之超音波影像系統,包含發射系統、資料擷取
是利用不同脈衝號延遲而使產生我們想要方向之波束完成物體之掃描,並且搭配 T-type 陣列架
構,發射和接收垂直排列,可等效出 2D 超音波影像訊號,搭配 A/D 資料擷取卡結合 labview
In order to enhance underwater search technology, this study performs array design and
preparation of piezeelectric piece transducer and its characteristic study through self-preparatiopn of
ultrasonic array system. In association with self-designed ultrasonic image system, image signal
acquisition is completed, in the mean time, the signal is transmitted to other model to complete
imaging and iamge processing job. In this study, piezoelectric ceramic piece array that is able to
transmit and receive 600kHz resonance frequency has been designed, meanwhile, MATLAB is used
to simulate the array wave beam and to acquire optimum 19 elements array parameter, finally, T type
transmitting and receiving ultrasonic transducer array is practically designed. The associated
ultrasonic image system includes transmitting system and data acuquisition system. The transmitting
system uses computer graphic control interface to control pulse driver to generate phase shift signal
and to form wave beam; wave beam technology uses different pulse signal delay to generate wave
beam in our desired direciton and to complete the object scanning; meanwhile, associated with T-type
array stucture and transmitting and receiving verticall arrangement, equivalent 2D ultrasonic iamge
signal can be formed, then associated with A/D data acquisition card and data acquisition interface
designed by labview, we can complete automatic ultrasonic image signal acquisiotni. The acquired
signal then passes through image processing to form image and to be applied to underwater operation
URI: http://ntour.ntou.edu.tw/handle/987654321/32899
Appears in Collections:[電機工程學系] 演講及研討會

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