电波科学学报2016，Vol.31Issue(5)：962-968,7.DOI:10.13443/j.cjrs.2016030101
湿度传感器圆柱谐振腔辐射量的研究
Radiant quantitive study of cylindrical cavity for humidity measurement
摘要
Abstract
The cylindrical resonant cavity in steam turbine,as a wetness measurement sensor,works in TE0 1 1 mode.Multiple annular slots are grooved at different positions on both ends of the cylindrical cavi-ty to sample the wet steam in real time.The electromagnetic field radiates through these slots to the sur-roundings,influencing the resonant characteristics and electromagnetic environment of the resonant cavity. Research on the radiation from the annular slots at both ends of the cylindrical resonant cavity is valuable to reduce electromagnetic radiation.The electromagnetic field equivalence theorem,boundary value condi-tion and Hankel transform were applied.The electromagnetic field distribution of the slots structure was derived by mode matching,and the radiation situations of different number,position,width,and thick-ness of annular were given.MATLAB was used to calculate the radiation of the annular slots,and HFSS simulation software was used to simulate the cylindrical resonant cavity with annular slots,and numerical results of radiation of the annular slots were obtained.The simulation results verify the correctness of the calculation method.The optimum structure parameters of cylindrical resonant cavity with annular slots as the wetness sensor is presented.关键词
湿度测量/圆柱谐振腔/圆环缝隙/辐射/模式匹配Key words
humidity measurement/cylindrical cavity/annular slots/radiation/mode matching分类
能源科技引用本文复制引用
张淑娥,孙丽红,孟宪盖..湿度传感器圆柱谐振腔辐射量的研究[J].电波科学学报,2016,31(5):962-968,7.基金项目
河北省自然科学基金(E2013502298) （E2013502298）
