冻土深度测量传感器及其检测方法

Permafrost Depth Measurement Sensor and Its Detection Method

本文利用冰和水介电常数的显著差异实现对冻土的检测, 对土壤中空气、 水、 冰及固态土的介电特性随温度变化的规律进行初步分析, 提出冻土检测的基本原理.具体来讲, 电容传感器建立于同一个平面的前提下, 对土层能予以垂直插入, 进而设置了分层检测流程.通过分析测量各层振荡频率的数值变化, 可以确定各层电容传感器所处水平断面被测土壤的冻结状态, 实现冻土深度的自动检测.

In this paper, the detection of permafrost was realized by the significant difference of the dielectric con- stant of ice and water. The basic principle of the permafrost detection was put forward by the law of the change of the dielectric properties of air, water, ice and solid soil in the soil with the change of temperature. Specifically, capacitive sensors were built on the same plane and can be vertically inserted into the soil layer, and a layered detection process was set up. By analyzing the numerical changes of the oscillation frequeney of each layer, the frozen state of the soil in the horizontal section of each layer of capacitance sensor could be determined, and the automatic detection of the depth of the frozen soil could be realized.