【作者】 刘有群； 张晨睿； 吉小军； 韩韬；

【Author】 LIU Youqun,ZHANG Chenrui,JI Xiaojun,HAN Tao (Shanghai Jiao Tong University,Shanghai,200240)

【机构】 上海交通大学电子信息与电气工程学院；

【摘要】 无源无线声表面波压力传感器在某些测量领域具有独特优势。本文介绍了一种基于表面横波模式谐振式无线压力传感器的查询系统。设计了脉冲式查询单元的硬件系统,运用了一种基于FFT+FT的高分辨率测频算法对回波进行频率估计,实验测试获得了满意的结果。更多还原

【Abstract】 Wireless and passive surface acoustic wave(SAW) pressure sensor has its unique advantages in certain measurement fields.A pulsed interrogation system for a wireless surface transverse wave based resonator pressure sensor is presented in this paper.The unit of interrogation system is designed and a high-resolution frequency measurement algorithm based FFT and FT method is used for estimating frequency of response signal to achieve a satisfactory measurement results.更多还原