基于微带天线的溶液浓度的测量  

Measurement of Solution Concentration Based on Microstrip Antenna

作　　者：戴雄英[1] 朱泽豪 孙杰 谭浩 DAI Xiongying;ZHU Zehao;SUN Jie;TAN Hao(College of Computational Science and Electronics,Hunan Institute of Engineering,Xiangtan 411104,China)

机构地区：[1]湖南工程学院计算科学与电子学院,湘潭411104

出　　处：《湖南工程学院学报（自然科学版）》2023年第4期38-43,共6页Journal of Hunan Institute of Engineering(Natural Science Edition)

基　　金：湖南省教育厅重点研究项目(21A0449);湖南省教育厅大学生创新创业训练项目(202211342055,S202311342053);湖南工程学院大学生课外学术科技作品项目(2022TZB36).

摘　　要：微波可以穿透被检测物质与其内部水分子相互作用.基于微波法,设计并制作了一款微带天线,并以有机溶液作为检测对象,分析了溶液的检测高度、含水量、谐振频点、回波损耗的关系.利用对水分敏感的微带天线将溶液的含水量转换成为微波电学参量的变化,建立换算数学模型,实现了透明液体浓度的在线测量.测试结果表明,本实验装置能有效检测出待测液体的浓度,且在60mm的检测高度下检测灵敏度最高,设计的数学模型具有良好的检测效果,可用于液体的浓度检测.本文所建立的S参数模型、浓度—S11模型以及微带天线的非接触、实时、高精度的含水量检测技术,为液体浓度检测提供了一种新方法.Microwave can penetrate the tested substance and interact with its internal water molecules.Based on the microwave method,a microstrip antenna is designed and made,and the relationship between the detection height,water content,resonance frequency point,and return loss of the organic solution as the detection object is analyzed.By using the moisture sensitive microstrip antenna to convert the water content of a solution into changes in microwave electrical parameters,a conversion mathematical model is established to achieve the online measurement of the concentration of transparent liquid.The experimental test results show that the experimental device can effectively detect the concentration of the liquid to be measured,and the detection sensitivity is the highest at the detection height of 60mm.The designed mathematical model has a good detection effect.The device can be used to detect the concentration of liquid.The S parameter model,concentration S11 model,and the non-contact,real-time,and high-precision moisture content detection technology of microstrip antenna measurement technology established in this paper provide a new method for liquid concentration detection.

关 键 词：液体浓度 微波检测 微带天线 散射参数 

分 类 号：TM931[电气工程—电力电子与电力传动]