Method for testing capacitance temperature type ice covering thickness sensor

Abstract

The invention provides a detecting method of a capacitive temperature sensor belonging to the technical field of automatic detection, characterized in that the sensor comprises a capacitance detection loop composed of an interior SCM, a digital simplex capacitance commutator, a group of parallel-plate detection capacitors arranged at a fixed interval with a target medium, such as ice or air, filled therebetween, and a duplex gate circuit with a programmably controllable scale having input ends sequentially connected with the plates of the parallel-plate detection capacitor and a common output end connected with a signal input end of the digital capacitance commutator; and a temperature detection loop composed of the interior SCM and a semiconductor integrated digital temperature sensor sealed within a metallic conductive housing. The sensor realizes fixed-point continuous automatic detection of thickness of icing on overhead power cables, fixing towers for high-voltage power cables, surfaces of buildings or stationary / mobile facilities, aerial brackets, and branches of trees under the condition of ice rain or frost.

Description

technical field [0001] The detection method of the capacitive temperature type ice coating thickness sensor of the present invention belongs to the technical field of automatic detection. It is a fixed-point continuous automatic detection of the ice thickness of suspended transmission lines, fixed towers of high-voltage transmission lines, buildings or various stationary or mobile equipment surfaces, suspended supports, branches, etc. under freezing rain or freezing conditions. sensor device. Background technique [0002] At home and abroad, there are few sensor devices for automatic and continuous detection of the thickness of the ice layer on the surface of objects under freezing or freezing rain conditions in winter. At present, the ice coating detection technology applied at home and abroad can be classified into three types, one is the direct measurement method, which relies on the manual ruler to directly measure the thickness of the ice coating on the surface of the ...

AI Technical Summary

Problems solved by technology

At present, the ice coating detection technology applied at home and abroad can be classified into three types, one is the direct measurement method, which relies on the manual ruler to directly measure the thickness of the ice coating on the surface of the object. Its advantage is that the data is reliable, but its disadvantages are The degree of automation is low, and it cannot guarantee automatic timing detection at the same location or automatic continuous detection at multiple locations simultaneously. It is very dangerous and affects the prediction and forecast of ice on the surface of the object; the second type is to use the camera device to continuously monitor the ice on the surface of the object and transmit the obtained image of the ice on the surface of the object to the video signal. The advantage is that it is suitable for monitoring the ice coating on the surface of large-area objects, but the disadvantage is that it is impossible to grasp the change process of growth and disappearance inside the structure of the ice coating layer; the third type of method is through physical detection methods such as electromagnetics and optics, such as Ultrasonic, infrared detection, etc.

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