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This paper presents a multi-electrode capacitance sensor and its system used in measuring sedimentation volume, water level, ice thickness of a river or reservoir. Based on the different characteristics of the capacitor in the different mediums such as in ice, water, sediment, a multi-functional, multi-electrode and non-closed capacitance sensor is(More)
Ice thickness is one of the most critical physical indicators in the ice science and ice engineering research, and it is very necessary to research the in-situ automatic observation technologies of the ice thickness. This paper has introduced the principle of three new technologies of in-situ sea ice thickness automatic observation and provided the findings(More)
Atmosphere, ice and water have different permittivity based on which the paper proposes the principle and method of ice layer thickness measurement with the effect of fringe electric field of uniplanar capacitance. The paper designs the processing circuit of sensor and the structure of sensor of ice layer thickness based upon mathematic model analysis on(More)
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