利用微波测量烟丝湿度的实验研究  

Experimental Research on Microwave Measurement of Moisture in Tobacco

作　　者：段聆泽 李泉凤[1] 胡玉民[1] 

机构地区：[1]清华大学工程物理系,北京100084

出　　处：《微波学报》1996年第1期62-67,29,共7页Journal of Microwaves

摘　　要：本文介绍用微波(λ=10cm)的方法测量烟丝湿度的实验情况,主要包括透射衰减A和透射相移Φ与烟丝的湿度MC和密度的关系,以及Φ/A与烟丝密度的关系.实验结果显示了A-MC、Φ-MC之间的线性关系,并初步实现了烟丝湿度的单参数测量.同时,实验指出了A、Φ随烟丝密度变化的规律及“与密度无关法”应用的必要性和可行性.An experimental investigation on the microwave measurement of moisture in tobacco at frequency 3. OGHz is described in this paper. The aim of the experiments is to study (1) the dependence of transmission attenuation A on moisture content MC and material density; (2) the dependence of transmitted phase shift Φ on MC and density; (3) the feasibility of the density-independent moisture measurement. The results demonstrate the linear function of A-MC and Φ-MC and show the possibility of single parameter measurement of moisture. The dependence of A and Φ on density is also showed and the necessity and feasibility of the density-independent method are confirmed.

关 键 词：湿度测量 烟丝 微波测量 卷烟 

分 类 号：TS47[农业科学—烟草工业]