Edge-Connected 2 Dimensional Array Composed of Nonlinear Acoustic Devices

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  • Yatame Naoki
    Graduate Program of Human Sensing and Functional Sensor Engineering, Yamagata University, 4-3-16 Jonan Yonezawa, Yamagata 992-8510, Japan
  • Tamura Yasutaka
    Faculty of Engineering, Yamagata University, 4-3-16 Yamagata 992-8510, Japan
  • Yanagida Hirotaka
    Faculty of Engineering, Yamagata University, 4-3-16 Yamagata 992-8510, Japan
  • Ishihara Chiaki
    Akishima Laboratory, Mitsui Engineering & Shipbuilding Co., Ltd., 1-50 Tsutsujigaoka 1-chome, Akishima, Tokyo 196-0012, Japan

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  • Ultrasonic Electronics. Edge-Connected 2 Dimensional Array Composed of Nonlinear Acoustic Devices.

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We propose an alternative 2 Dimensional acoustical array transducer which enables one to generate an arbitrary transmitting beam with a very small number of signal channels. The array with N × M elements can be controlled by N + M signal channels by edge-connected array. In this paper, an edge-connected array composed of nonlinear acoustic devices such as electrostrictive transducers is proposed. Each element of our array can be controlled independently, in contrast to conventional edge-connected arrays. We adopted a spice model of an electrostrictive material (PMN-Pt) to evaluate the characteristics of the array. The performance of the single transducer and the ability of the edge-connected array to perform 3 dimensional imaging were demonstrated by SPICE simulation. In addition to simulation, we performed preliminary experiments using PMN-Pt as a test sample.

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