| 用于超声波激发与检测的电容声换能器 |
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| 引用本文： | 刘镇清 魏墨庵. 用于超声波激发与检测的电容声换能器[J]. 传感器与微系统, 1992, 0(1): 28-30 |
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| 作者姓名： | 刘镇清 魏墨庵 |
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| 作者单位： | 同济大学声学研究所(刘镇清)，同济大学声学研究所(魏墨庵) |
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| 摘 要： | 介绍了一种用于激发与检测超声波的电容式换能器,并详细论述了这种非接触换能器的原理。将电介质薄膜置于试样与换能器之间,即提高了发射与接收效率,同时又保持了它的非接触特点。
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| 关 键 词： | 电容换能器 超声检测 电介质薄膜 |
A Capacitive Acoustic Transducer for Generation and Detection of Ultrasonic Waves |
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| Liu Zhenqing and Wei Mo'''' an. A Capacitive Acoustic Transducer for Generation and Detection of Ultrasonic Waves[J]. Transducer and Microsystem Technology, 1992, 0(1): 28-30 |
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| Authors: | Liu Zhenqing and Wei Mo'''' an |
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| Abstract: | We describe a capacitance transducer for use as generator and detector of acoustic waves. The principles of the noncontact transducer are discussed in particular. A dielectric film is sandwiched between the sample surface and the inner electrodes of the transducer, that increases the sensitivity of detection and the intensity of generation, but maintains the noncontact conditions. |
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| Keywords: | Capacitanoe transducer Ultrasonic testing Dielectric film |
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