Frequency characteristics of a semi-closed structure in a guided-wave optical pressure sensor for detection of tsunami formation: investigation based on numerical simulations and experiments
Frequency characteristics of a semi-closed structure in a guided-wave optical pressure sensor for detection of tsunami formation: investigation based on numerical simulations and experiments
复制标题
用于检测海啸形成的导波光学压力传感器中半封闭结构的频率特性：基于数值模拟和实验的研究
DOI：
10.1117/12.2541707
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Ohkawa Masashi
中科院分区：
文献类型：
--
作者：
Toriyama Taiju;Ono Hana;Takaoka Naoto;Ohkawa Masashi
我们的小组正在开发一种导波光学压力传感器，以检测海啸形成过程中发生的微小压力波动。该传感器由作为压力敏感结构的膜片和在膜片下具有小孔的半封闭结构组成，该小孔提供了独特的高通滤波功能。高通特性的截止频率是检测海啸形成引起的压力波动的重要因素。本文通过数值模拟和实验研究了传感器的频率特性和截止频率随半封闭结构尺寸和压力振动幅值的变化规律，为传感器的设计提供了理论依据
Our group is developing a guided-wave optical pressure sensor to detect minute pressure fluctuations occurring during tsunami formation. The sensor consists of a diaphragm as a pressure-sensitive structure and a semi-closed structure with a small hole under the diaphragm which provides a unique high-pass filter function. Cutoff frequency of the high-pass characteristic is an important factor to detect pressure fluctuations due to tsunami formation. In this study, investigations were carried out on frequency characteristics and cutoff frequencies, which vary according to the semiclosed structure dimensions and pressure vibration amplitude, by numerical simulations and experiments in order to further establish design details of the sensor