A high performance PZT type material used as sensor for an audio high frequency piezoelectric siren

2008 IEEE International Conference on Semiconductor Electronics Pub Date : 2008-12-09 DOI:10.1109/SMICND.2008.4703364

C. Miclea, C. Tănăsoiu, A. Iuga, I. Spanulescu, C. Miclea, C. Plăviţu, L. Amarande, M. Cioangher, L. Trupina, C. Miclea, T. Tanasoiu

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引用次数: 1

Abstract

A high quality PZT type material was designed and produced in order to be used as sensor for a high internsity siren. Two disks from this materials were assembled into a parallel bimorph type transducer with an intermediate metallic plate. This assembly behaves like an acoustic resonator in the high frequency audio range. The fundamental of the flexural mode for a free resonator is taken into account. Its frequency dependence on the geometry of the system and on its material properties is computed using the results for a circular plate with clamped edges and an observation on the equivalence between the movement of a particular part of a resonator in a stationary state and the movement of that part separated from the resonator but with the same border conditions. Acoustical and impedance measurements were made in order to appreciate the influence of the metallic plate on the frequency. In order to increase the acoustic emission a frontal cardboard horn was added to the resonator.

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一种用于音频高频压电警报器传感器的高性能PZT型材料

设计并生产了一种高质量的PZT型材料，用于高强度警笛的传感器。将该材料的两个圆盘与中间金属板组装成一个平行的双晶圆型换能器。这个组件的行为就像高频音频范围内的声学谐振器。考虑了自由谐振器弯曲模态的基本原理。它的频率依赖于系统的几何形状和它的材料性质，计算使用的结果与一个圆形板夹紧的边缘，并观察在固定状态下的谐振器的特定部分的运动和从谐振器分离，但具有相同的边界条件的运动之间的等效性。为了了解金属板对频率的影响，进行了声学和阻抗测量。为了增加声发射，在谐振器中增加了正面纸板喇叭。

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2008 IEEE International Conference on Semiconductor Electronics

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