利用微波谐振技术检测物体密度的软件设计  

Software design of material density detecting by using microware resonant technology

作　　者：徐达旺[1,2] 张济民[1] 王永军[1] 方鹏[1] 

机构地区：[1]中国电子科技集团公司第四十一所,青岛266555 [2]电子测试技术重点实验室,青岛266555

出　　处：《电子测量技术》2016年第5期167-170,共4页Electronic Measurement Technology

摘　　要：论述了一种物体密度的微波检测技术,即利用微波谐振技术,通过检测谐振腔的频率变化和微波信号的幅度衰减,来测定微波谐振腔体内的介质的密度。主要阐述了测量原理、校准技术和测量过程。重点对校准过程进行说明,利用频率扫描的方法,逼近谐振腔的谐振频率,对主要的公式进行了理论推导。通过对实验数据的分析与整理,结合工程实践,推导了谐振腔中的介质密度的计算公式。利用这种技术测量得到的物体密度误差满足预期设计要求。A technique for material density microware detecting is introduced in this paper.Using a microwave resonant technique,by detecting the change of resonant frequency and the attenuation of microwave magnitude,the density of the material in the microware cavity resonator can be measured.Measurement principle,calibration technique and measurement process are mainly discussed.The calibration process is emphatically illustrated,that is,the resonant frequency of the cavity resonator is approached by using frequency sweep method,and some formulae are deduced.After data analysis and process of the experiment,the formula for the density of the material in the microware cavity resonator is given.The error of this technique for microware density detecting can satisfy the design requirement.

关 键 词：谐振腔 谐振频率 幅度 带宽 校准 

分 类 号：TM930.12[电气工程—电力电子与电力传动] TM931