Full-angle infinite rotation single potentiometer and high-precision angle calibration method

Abstract

The invention relates to the field of 360-degree angle sensors, and provides a full-angle infinite rotation single potentiometer and a high-precision angle calibration method. The invention aims to provide the full-angle infinitely-rotating single potentiometer which does not have a measurement dead angle and can perform 360-degree cyclic measurement. According to the main scheme, the electrode comprises a shell, an electrode holder and a top cover, the electrode holder is installed in the shell and fixed through the top cover, an upper carbon film ring is arranged on the top face of the electrode holder, a lower carbon film ring is arranged on the bottom face of the electrode holder, the upper carbon film ring is provided with an upper carbon film ring opening, and the lower carbon film ring is provided with a lower carbon film ring opening. The projections of the upper carbon film ring opening and the lower carbon film ring opening in the horizontal direction do not coincide, a rotating shaft is arranged in the center of the electrode holder, electrode plates are arranged on the rotating shaft, and the electrode plates comprise an upper electrode plate electrically contacted with the upper carbon film ring and a lower electrode plate electrically contacted with the lower carbon film ring.

Description

technical field [0001] The invention relates to the field of 360° angle sensors, and provides a full-angle infinitely rotating single potentiometer and a high-precision angle calibration method. Background technique [0002] Angle potentiometers usually have three terminals, which are designed according to the principle of linear change through resistance at different angles. A potentiometer usually consists of a carbon film resistor coil and a movable electrode brush. When the electrode brush moves along the resistor body, a resistance value or voltage that has a certain relationship with the displacement is obtained at the output end, and the existing angle potentiometer cannot achieve 360° continuous measurement. [0003] There is a multi-turn precision potentiometer CN 204360863 U in the prior art. The literature method and device structure are complicated, and three-dimensional space is required, that is, three-dimensional coordinates are required for quantitative calc...

AI Technical Summary

Problems solved by technology

When the electrode brush moves along the resistor body, a resistance value or voltage that has a certain relationship with the displacement is obtained at the output end, and the existing angle potentiometer cannot achieve 360° continuous measurement

[0003] CN 204360863 U, a kind of multi-turn precision potentiometer in the prior art, the document method and device structure are complex, need three-dimensional space, that is, need three-dimensional coordinates to quantitatively calculate, only Qualitative introduction, no quantitative algorithm, especially in use, the shaft of the potentiometer will move up and down with the rotation, the requirements for the connection of the measured object are high, the space increases, and the volume also increases, the application range is limited

[0004] The existing technology is a wind generator impeller azimuth measuring device and its measuring method CN 112855468 A. The device and method in this paper need a displacement sensor to measure the angle. The algorithm given in the article requires sin calculation, which is difficult to realize by single-chip microcomputer

[0005] CN 103489554 A, a wide range potentiometer in the prior art, the document method and device structure are complicated, and three-dimensional space is required, that is, three-dimensional coordinates are required for quantitative calculation, and only qualitative introduction is given in the text , there is no quantitative algorithm, especially in use, the shaft of the potentiometer will move up and down with the rotation, which requires high connection of the measured object, increases the space and volume, and the application range is limited

[0006] CN 204189544 U, a 360-degree rotating potentiometer in the prior art, requires two potentiometers, and no specific algorithm is given

Images