Capacitance ratio type ice-covering thickness sensor and its detection method

Abstract

The invention relates to a capacitance ratio type icing thickness sensor and a detection method thereof. The sensor is characterized in that: a relative capacitance value detection loop is formed by a single chip microcomputer inside a sensor, a double-channel capacitance digital converter, detected media icing or air spreading between pole plates, a group of parallel pole plate detection capacitors which have an geometric structure the same with a reference parallel plate pole plate detection capacitor and are arranged according to fixed ruler scale spacing positions, as well as a double-channel programmable control scale gating circuit; under the control of the single chip microcomputer, the capacitance value obtained by each relative capacitance value detection loop is compared with the reference capacitance value obtained by a reference capacitance value detection loop which is formed by the single chip microcomputer inside the sensor, the double-channel capacitance digital converter and the reference parallel plate pole plate detection capacitor, and the measurement on the surface icing thickness of the sensor is realized by analyzing and judging a ratio result. Under the condition of ice rain or freezing, the sensor can continuously and automatically detect the icing thickness of suspended power transmission lines, pylons, buildings, equipment surfaces, branches, etc.

Description

technical field [0001] A capacitance ratio ice thickness sensor and a detection method thereof belong to an invention in the technical field of automatic detection. It is a sensor and its detection method for fixed-point automatic and continuous detection of the thickness of the ice layer on the surface of an object under freezing rain or freezing conditions. Background technique [0002] The sensor device and its sensor device for fixed-point continuous automatic detection of the ice thickness of suspended transmission lines, high-voltage transmission lines, fixed towers, buildings or the surfaces of various stationary or moving objects, suspended supports, branches, etc. under freezing rain or freezing conditions Detection methods can be classified into the following three types: [0003] One is the direct measurement method, which relies on manual use of a ruler to directly measure the thickness of the ice on the surface of the object. Its advantage is that the data is r...

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Problems solved by technology

[0003] One is the direct measurement method, which relies on manual use of a ruler to directly measure the thickness of the ice on the surface of the object. Its advantage is that the data is reliable, but its disadvantage is that the degree of automation is low, and it cannot guarantee automatic timing detection at the same location or synchronization at multiple locations. Automated continuous detection is very dangerous when measuring the thickness of ice on the surface of high-voltage power lines and their towers, the surface of moving aircraft wings, ships, drilling rigs, etc. forecast;

[0004] The second type is to use the camera device to continuously monitor the ice coating on the surface of the object and transmit the video signal of the ice coating image on the object surface to the monitoring center for processing. Its advantage is that it is suitable for monitoring the ice coating on the surface of a large area. The disadvantage is that it is impossible to grasp the process of production and consumption changes inside the ice-covered layer structure;

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