基于微波差分技术的湿度测量方法  

Humidity measurement method based on microwave differential technique

作　　者：杨志[1] 刘亚川[1] 张淑娥[1] 

机构地区：[1]华北电力大学 电子与信息工程学院,河北保定071003

出　　处：《华北电力大学学报（自然科学版）》2005年第1期69-71,共3页Journal of North China Electric Power University：Natural Science Edition

基　　金：河北省自然科学基金资助项目(F2004000505)华北电力大学青年教师科研基金资助项目(QN0303002)

摘　　要：基于微波差分技术的湿度测量方法,与其他微波湿度测量方法相比,测量精度高而且稳定性好。通过测量两个谐振腔的反射系数差得到气体的相对介电常数,进而得到气体湿度,双谐振腔结构也可以补偿环境温度引起的漂移。通过系统建模,利用MATLAB程序对微波差分测湿系统的性能进行了仿真分析。Compared with other microwave measurement, the humidity measurement method possess higher precision and better stability. It gets the relative permittivity of gases by measuring the differences of the reflection coefficients of two resonators and then obtains the gas humidity. The construction of double-resonator can compensate the drift due to environment temperature. Performance simulation of microwave differential system has been done by using MATLAB program.

关 键 词：微波 谐振腔 湿度测量 差分技术 

分 类 号：TB943[一般工业技术—计量学]