基于VI的无线无源SAW压力传感系统  

Wireless and Passive SAW Pressure Sensing SystemBased on Virtual Instrumentation

作　　者：阮喻[1,2] 文玉梅[1] 李平[1] 沈卫东[2] 

机构地区：[1]重庆大学光电工程学院,重庆400030 [2]重庆通信学院军用特种电源军队重点实验室,重庆400035

出　　处：《现代科学仪器》2016年第4期38-42,共5页Modern Scientific Instruments

基　　金：重庆市重大应用开发计划（cstc2013yykfC60002）资助项目

摘　　要：提出了一种基于虚拟仪器的无线无源SAW压力传感系统，利用计算机通过数字信号处理的方法来实现激励信号的产生、传感信号的检测与估计。分析了其基本组成、工作流程与信号检测原理，并搭建实验系统进行了验证，发现其在5m处的测量结果与传统的有线测量结果高度吻合。实验结果为声表面波传感器的无线无源测量方案提供了有益参考。A wireless and passive SAW pressure sensing system based on virtual instrumentation was designed, by means of computer digital signal processing which can producethe stimulant signal and identifythe sensor signal.The basic composition and working process of the system were introduced, andhow to detect and analyze the sensing signal of system was discussed. Finally the experiment was designed and made, which shows that it almost gets the same result as using traditional wire measuring method in the distance of 5 meters. It provides useful reference for the design of wireless and passive SAW sensing system

关 键 词：虚拟仪器 声表面波 无线无源传感系统 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]