Capacitance Inducing Ice Thickness Sensor Based on the Relative Permittivity Difference of the Air,Ice and Water

It is a new method to detect the real-time ice conditions,based on physical differences of air,ice and water.According to this idea,the structure of the capacitive inducing ice thickness sensor is described,and which can achieve continuous and automatic detection of freezing to melting process in inner of ice layer and is used in Inner Mongolia River in the Yellow River for application test.The experimental result shows that it can achieve accurate measurement of ice thickness by capacitive sensing techniques.This new sensor has the characteristics of simple structure,high sensitivity and can be used for continuous automatic monitoring ice thickness and water level under ice in northern China in winter.