Condenser type ice layer thickness sensor and detecting method thereof

Abstract

This invention relates to capacitor thickness sensor and its test method in the field of automatic testing technique, which is characterized by the following: forming testing circuit by the capacitor measurement circuit and single machine control circuit and the sensor inside scale code switch circuit through one set of metal capacitor test pole slice and metal capacitor testing pole slice space; generating scale code switch control signals along certain order by the senor inside single machine control to connect metal capacitor test pole slices adjacent two metal capacitor test pole slices to test the capacitor value and to determine the ice layer thickness sensor.

Description

technical field [0001] A capacitive ice layer thickness sensor and a detection method thereof belong to an invention in the technical field of automatic detection. It is a sensor that can automatically and continuously detect the thickness of the ice layer at fixed points in river channels, lakes, reservoirs, long-distance water transmission projects, polar expeditions, geological and environmental monitoring, and various hydropower projects. device. technical background [0002] At home and abroad, there are few sensor devices that can detect the thickness of the ice layer automatically and continuously at fixed points in the process of ice layer generation and disappearance under freezing conditions in winter. At present, the ice production and consumption detection technology used at home and abroad can be classified into three types. One is the direct measurement method, which relies on manual ice digging or drilling to directly measure ice thickness and water level. Th...

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Problems solved by technology

Its advantage is that the data is reliable, but its disadvantages are low automation, high labor intensity, and high risk. It cannot guarantee automatic timing detection at the same location or automatic continuous detection at multiple locations simultaneously.

Therefore, there is no complete automatic and continuous acquisition method for the change data of the ice formation and disappearance process, which has no effect on the correction of the fine model of ice formation, and affects the prediction and forecast of ice formation and disappearance; the second type is telemetry through satellite or radar. Its advantage is that it is suitable for large-scale sea ice monitoring, but its disadvantage is that it cannot grasp the internal change process of local small-scale ice structure, and it is difficult to apply to the ice detection field of many river channels and water conservancy facilities; the third type of method is classical Physical detection methods such as electromagnetics and acoustics, such as ultrasonic detection

Their advantage is that the operation is simple and fast, but the disadvantage is that the error is large

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