摘要
为加快回音壁模式微波谐振腔测温仪在工业精密测温领域的应用,提高工业精密测温的测量精度和抗震性,研究基于圆柱状蓝宝石的回音壁模式微波谐振腔测温仪的金属腔体与中心介质的尺寸优化设计。分别对相同比例下不同尺寸的蓝宝石与腔体以及相同蓝宝石尺寸下不同腔体尺寸的谐振频率变化和品质因数改变的规律进行探索。研究发现,谐振频率可随腔体尺寸的增加而指数减小,但一味增大腔体尺寸并不能提高品质因数,反而有可能降低测量精度。研究成果可以揭示测温仪的测量精度变化规律特点,探寻最优尺寸设计,为微波谐振腔测温仪的小型化和高精密研究提供参考,加快其在高精密工业测温领域的广泛应用。
In order to expand the application of microwave resonator thermometer(WGM)in high precision industrial temperature measurement and increase the measurement accuracy and shock resistance of industrial precision thermometer,the research is conducted on the dimension optimization design of metallic cavity and central medium of the microwave resonator thermometer based on cylindrical sapphire.The paper also explores the change of resonant frequency and quality factor respectively of the sapphire and cavity with different dimensions in same scale and the cavity in different dimensions with the same sapphire dimension.Through the research,it can be found that although the resonant frequency decreases along the increase of the cavity dimension,the increasing cavity dimension may reduce the measurement accuracy instead of increasing the quality factor(Q).Moreover,the characteristics of variation of measurement precision of the thermometer can be revealed and the design of optimum dimension can be explored,so as to provide basis for the smallscale and high-precision research on the microwave resonator thermometer and accelerate its application in high precision industrial temperature measurement.
作者
于莉莉
张广明
卢锦川
童文雨
YU Lili;ZHANG Guangming;LU Jinchuan;TONG Wenyu(College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing 211816,China;Guangxi Technological College of Machinery and Electricity,Nanning 530007,China)
出处
《中国测试》
CAS
北大核心
2018年第8期132-135,152,共5页
China Measurement & Test
基金
国家自然科学基金资助项目(51707092
61703202
51507078
61503181)
江苏省博士后资助项目(1601110C)
关键词
回音壁模式
微波谐振腔
测温仪
尺寸优化
谐振频率
品质因数
蓝宝石
whispering gallery mode
microwave resonator
thermometer
dimension optimization
resonant frequency
quality factor
sapphire
