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Study on low-loss surface acoustic wave sensor installed in sensor network

传感器网络中低损耗声表面波传感器的研究

基本信息

批准号：
22560342
负责人：
HIKITA Mitsutaka
金额：
$ 2.91万
依托单位：
Kogakuin University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2010
资助国家：
日本
起止时间：
2010 至 2012
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560342/
关键词：
弾性表面波 SAW、センサネットワーク弾性表面波センサ SAW センサ ZigBee センサ低損失弾性表面波センサ・ネットワーク SAW 低損失SAW 水素漏洩温度補償センサネットワークガスセンサ

项目摘要

We have studied a novel SAW gas sensor for odors from patients or in sickrooms and hydrogen-gas leakage from future fuel-cell cars. The developed sensor will be installed in sensor network. The use in a garage as sensor nodes must guarantee large temperature range from -40 to 80 °C, which requires the self-temperature-compensation characteristics as an essential feature. Moreover, the sensor nodes must operate over couples of years under a single battery, which requires very low-power consumption and very low-loss characteristics for SAW sensors. In this study(1) we achieved the self-temperature-compensation characteristics which removed the limitation for piezoelectric crystal substrates such as a Quartz substrate;(2) we developed a new lattice-circuit type low-loss sensor consisting of SAW resonators which could make it possible to be included in sensor nodes;(3) in order to increase the sensing sensitivity we proposed a double-reflection type SAW resonators which had effectively expanded the interaction areas reactive to sensing gas. Experimental and simulation results are presented.

我们已经研究了一种新型的SAW气体传感器的气味从病人或病房和氢气泄漏从未来的燃料电池汽车。所研制的传感器将被安装在传感器网络中。在车库中作为传感器节点的使用必须保证-40至80 °C的大温度范围，这需要自温度补偿特性作为基本特征。此外，传感器节点必须在单个电池下工作几年，这要求SAW传感器具有非常低的功耗和非常低的损耗特性。在本研究中，我们实现了自温度补偿特性，消除了石英基片等压电晶体基片的限制：（2）我们开发了一种新的由SAW谐振器组成的晶格电路型低损耗传感器，使其有可能被包括在传感器节点中;（3）为了提高传感灵敏度，提出了一种双反射型SAW谐振器，有效地扩大了传感气体的相互作用面积。实验和模拟结果。