| 基于延迟线理论的新型无源声表面波传感器研究 |
| |
| 引用本文： | 李天利,郑亮,胡泓. 基于延迟线理论的新型无源声表面波传感器研究[J]. 传感技术学报, 2008, 21(5): 757-760 |
| |
| 作者姓名： | 李天利 郑亮 胡泓 |
| |
| 作者单位： | 哈尔滨工业大学深圳研究生院,广东,深圳,518055;哈尔滨工业大学深圳研究生院,广东,深圳,518055;哈尔滨工业大学深圳研究生院,广东,深圳,518055 |
| |
| 摘 要： | 基于声表面波的延迟线理论,设计出一款新型的无线无源SAW温度和压力混合传感器.该传感器中温度对信号的影响掺杂在检测压力变化的信号中,通过引入权重因子,把压力信号从温度和压力共同影响的混合信号中分离出来,从而达到温度和压力同时检测的目的.此设计充分利用了IDT的转换能量,减少了信号之间的干扰,并对IDT及反射器进行优化设计,提高了传感器的灵敏度.此传感器具有无线无源等特点,适合在复杂环境下工作.
|
| 关 键 词： | 声表面波 无源传感器 权重因子 叉指换能器 |
| 文章编号： | 1004-1699(2008)05-0757-04 |
| 修稿时间： | 2007-09-01 |
A Novel Wireless Passive SAW Sensor Based on the Delay Line Theory |
| |
| LI Tianli,ZHENG Liang HU Hong. A Novel Wireless Passive SAW Sensor Based on the Delay Line Theory[J]. Journal of Transduction Technology, 2008, 21(5): 757-760 |
| |
| Authors: | LI Tianli ZHENG Liang HU Hong |
| |
| Affiliation: | LI Tian-li*,ZHENG Liang*,HU Hong |
| |
| Abstract: | A novel wireless passive SAW temperature and pressure sensor is designed,based on the SAW delay line theory.The effect of the temperature is included in the pressure feedback signal and a weighted factor is introduced in order to separate the temperature effect from the feedback signal.Therefore,the temperature and pressure can be accurately measured at the same time.In this sensor design,the energy converted from IDT is fully used,and the interference between the signals is minimized.The IDT and its reflectors have been optimally designed to improve the sensitivity of the sensor.This wireless passive sensor is capable of working in the complicated environment. |
| |
| Keywords: | SAW passive sensor weighted factor IDT |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《传感技术学报》浏览原始摘要信息 |
|
点击此处可从《传感技术学报》下载全文 |
|
