|
|
|
| Study on frozen soil detection method based on dielectric properties |
| Liu Yinfeng1,2,Yu Guohe3,Du Jianping1,2,Liu Ke2,Zhai Longsheng2 |
1.CMA Meteorological Observation Centre,Beijing 100081;
2.Beijing HY Orient Detecting Technology Co.,Ltd,Beijing 100081;
3.Zhongyuan Photoelectric Measurement and Control Technology Company,Zhengzhou 450005 |
|
|
|
|
Abstract On the basis of principle of dielectric properties of frozen soil components,laboratory study on the temperature-dielectric properties of air,water,ice and dry soil were carried out.It is found that the variation of frozen soil total dielectric constant depends on the phase transition of water and ice in the process of temperature change,and the influence of air and dry soil on soil total dielectric constant is negligible.Based on these characteristics,a method for detecting frozen soil by using the difference of dielectric constant of air,solid soil,water and ice is proposed,and taking the experiment for the dielectric properties of typical frozen soil.The experimental results show that the variation of the dielectric constant of soil freezing process is more obvious and easy to distinguish,therefore,it is feasible to use the capacitive sensor based on dielectric characteristics to detect the frozen soil.
|
|
Received: 21 May 2017
|
|
|
|
|
|
| [1] |
张廷军,晋锐,高峰.冻土遥感研究进展——可见光、红外及主动微波卫星遥感方法[J].地球科学进展,2009,24(09):963-972.
|
| [2] |
张廷军,晋锐,高峰.冻土遥感研究进展:被动微波遥感[J].地球科学进展,2009,24(10):1073-1085.
|
| [3] |
朱安宁,吉丽青,张佳宝,等.不同类型土壤介电常数与体积含水量经验关系研究[J].土壤学报.2011,48(02):263-268.
|
| [4] |
徐斅祖,王家澄,张立新.冻土物理学[M].北京:科学出版社,2010.
|
| [5] |
任亚民.冻土物理性质的变化分析[J].内蒙古电力技术,2003,21(S1):34-36.
|
| [6] |
徐斅祖.冻土中水分迁移的实验研究[M].北京:科学出版社,1991.
|
| [7] |
贺庆之,贺静.单一平面电容传感器原理与应用[J].工业仪表与自动化装置,2001,24(5):62-63,58.
|
| [8] |
李鹏,余国河,陈涛,等.电容式冻土测量传感器[J].传感器与微系统,2014,33(1):89-91,96.
|
| [9] |
余国河,李鹏,冶林茂,等.基于平面电容的冻土检测传感器[J].现代电子技术,2015,38(2):124-127,131.
|
| [10] |
河南省气象科学研究所,中原光电测控技术公司.冻土及干土层测量传感器:中国,ZL 2012 1 0054137.6[P].2014-01-22.
|
|
|
|
2017, Vol. 34 
