Capacitance temperature type ice covering thickness sensor

Abstract

A capacitance temperature ice coating thickness sensor belongs to the field of automated testing technology, characterized by that a capacitance value test circuit is composed of a single-chip inside the sensor, a single-path capacitance digital converter and medium ice or air to be detected filled between polar plates, a group of parallel polar plate testing capacitor arranged with fixed staff scale space, and a two-way programmable control scale gate circuit of each input end connected with each polar plate of the parallel polar plate testing capacitor orderly, and a common output end connected with a signal input end of the capacitance digital converter; a temperature test circuit is composed of the inner single-chip of the sensor and a semiconductor integrated digital temperature sensor sealed in a metal heat-conducting housing; the sensor is capable of undergoing fixed-point continuous automatic test of the ice coating thickness of a suspending transmission line, a fixed gantry of a high voltage transmission line, a building or surface of various static or mobile equipment, a suspending bracket, a branch, etc. in ice rain or freezing condition.

Description

technical field [0001] The capacitive temperature ice thickness sensor of the 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 object. Its advantage is that the data is rel...

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 "imaging device to continuously" monitor the ice on the surface of the object and obtain the image and video of the ice on the surface of the object. The signal is transmitted to the monitoring center for processing. Its advantage is that it is suitable for monitoring the ice on the surface of large-area objects. The disadvantage is that it is impossible to grasp the process of production and consumption changes inside the ice-covered structure; the third type of method is through physical detection methods such as electromagnetics and optics. , such as ultrasonic, infrared detection, etc.

Images