Differential capacitor type obliquity sensor

Abstract

The invention relates to a differential capacitor type obliquity sensor. The device consists of a fixing electrode A (1), a fixing electrode B (2), a liquid electrode (3), an insulating layer (4), a front cover plate (5) and a rear cover plate (6), wherein the insulating layer (4) is cylindrical; the fixing electrode A (1) and the fixing electrode B (2) are semi-cylindrical and are just fixed outside the insulating layer (4); the fixing electrode A (1) and the fixing electrode B (2) are symmetrically distributed on the left and right sides; a cavity of the insulating layer (4) is sealed through the front cover plate (5) and the rear cover plate (6); a half of the cavity is filled with conductive fluid to form the liquid electrode (3); the fixing electrode A (1), the fixing electrode B (2) and the liquid electrode (3) form two differential capacitors. When a sensor rotates on the horizontal plane, the differential capacitors have the same sizes; when the sensor is arranged on an inclined plane, the capacitance of one differential capacitor is increased, the capacitance of the other differential capacitor is reduced, and the obliquity of the inclined plane is determined by measuring the difference of the differential capacitors.

Description

technical field [0001] The invention relates to sensing, machinery, instrumentation and manufacturing technology, in particular to an electronic level for measuring the inclination of a plane in a certain direction relative to a horizontal position. Background technique [0002] The traditional level is a bubble level, and the bubble level mainly relies on the offset of the bubble offset from the middle position of the level to measure the unevenness of a certain area on the surface of the workpiece. The disadvantage is that the bubble level is very sensitive to temperature. As the temperature rises, the length of the bubble changes, and the size of the inner cavity of the bubble tube also changes, resulting in an increase in the measurement error of the instrument; secondly, each working surface of the bubble level must be cleaned before use. It is necessary to judge whether the zero position of the level meter is accurate according to the position of the bubble, and can on...

AI Technical Summary

Problems solved by technology

The disadvantage is that the bubble level is very sensitive to temperature. As the temperature rises, the length of the bubble changes, and the size of the inner cavity of the bubble tube also changes, resulting in an increase in the measurement error of the instrument; secondly, each working surface of the bubble level must be cleaned before use. It is necessary to judge whether the zero position of the level meter is accurate according to the position of the bubble, and can only measure the horizontal degree in a limited direction, and cannot detect the angle of inclination. The degree of deviation is obtained, and the test results are artificial

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