A Resolver-like Inclination Sensor

Abstract

The invention relates to an inclinometer for similar rotary transformers. The inclinometer comprises a sensitive structure and a shell, wherein the sensitive structure comprises a first reception polar plate, an emission polar plate and a second reception polar plate; the first reception polar plate, the emission polar plate and the second reception polar plate are alternately stacked in sequenceto form a sandwich-like structure which is placed in the shell; the first reception polar plate, the emission polar plate and the second reception polar plate are the same in the aspect of size and the distances between every two adjacent polar plates are the same; the first reception polar plate, the second reception polar plate and the shell form an enclosed cylindrical space; dielectric liquidis sealed in the enclosed cylindrical space; and under any angle, the liquid level of the dielectric liquid is coincided with the centers of the three polar plates. The invention discloses a variable-electrode area differential capacitive inclination sensitive device structure which is high in sensitivity, wide in dynamic range, good in frequency response characteristic and low in cost and can bewidely applied in inclination sensing and test instrument measurement in the field of test.

Description

technical field [0001] The invention relates to an inclination sensor, in particular to an inclination sensor of a rotary transformer. Background technique [0002] The inclination sensor converts the inclination or inclination change relative to the reference plane into a corresponding electrical signal output to obtain the corresponding inclination value. The tilt sensor mainly includes sensitive structure, demodulation circuit and compensation algorithm. The existing sensitive structures of inclination sensors mainly include solid pendulum type, liquid pendulum type and gas pendulum type inclination sensors. The existing three kinds of inclination sensors have some problems to varying degrees, for example, the liquid pendulum inclination sensor has a narrow dynamic range and low dynamic response frequency, while the solid pendulum inclination sensor has complex structure and process, and has poor ability to resist strong shock and vibration. The sensitive mass of the ga...

AI Technical Summary

Problems solved by technology

The existing three types of inclination sensors have some problems to varying degrees. For example, the liquid pendulum type inclinometer has a narrow dynamic range and low dynamic response frequency, while the solid pendulum type inclinometer has a complex structure and process, and has poor resistance to strong shock and vibration.

The sensitive mass of the gas pendulum inclination sensor is gas, and the gas movement control is more complicated, and there are many factors affecting its movement, and its accuracy cannot meet the requirements of military weapon systems

[0003] At present, the sensitive structure of capacitive inclination sensing mostly subdivides the electrode in the diameter direction, and detects the inclination angle by detecting capacitance. This method is simple in principle, but there is a dead zone in the measurement, and the full range of 0 to 360 degrees cannot be realized. Measurement

Moreover, the existing sensors and methods have many limitations in the field of engineering applications, such as adaptability to the factory environment, suppression of power frequency interference, etc., because of the need for high-speed acquisition, long calculation cycles, high power consumption, etc.

[0004] With the development of precision manufacturing technology, existing high-precision inclination sensors cannot meet the accuracy requirements, and it is of great significance to study intelligent high-precision inclination sensors with higher resolution and better performance.

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