Dissertation
Dissertation > Transportation > Waterway transport > Marine Engineering > Navigation equipment, acoustic equipment > Acoustic equipment

The Design Study of Receiving and Emitting Transducers Array in Three-dimensional Imaging Sonar

Author ZhangXinLi
Tutor JiXiangChun
School Harbin Engineering University
Course Underwater Acoustics
Keywords piezoelectric transducer sensor array finite element analysis array directivity array Gain
CLC U666.7
Type Master's thesis
Year 2008
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With the fact that the underwater probing and identification becoming more and more urgent, the probing system need to be more perfect to identify the target nicely. Based on the sound information gained by the underwater three-dimensional imaging sonar, three-dimensional section sound image is extracted, which can be used to identify and classify the target, and accomplish the task of sound-ocular.In this paper, we use the software of ANSYS to design and analyse the receiving and emitting transducers array used in the three-dimensional imaging sonar. The main studies of this paper are:1. The basic theories of piezoelectric transducer, including the internal structure of piezoelectric ceramic, dielectric properties, elastic properties, piezoelectric properties and the working principle of the piezoelectric transducer.2. Analyze and design the receiving transducers array. Confirm the vibration pattern and structure dimension of the element. Make modal analysis, harmonic response analysis and static analysis of the element. Finally, Make harmonic response analysis of the transducers array.3. Analysis the directivity and gain of the receiving array, and use Matlab to simulate the direction of the array and the gain of the array.4. Analyze and design the transmitting transducer.

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