A Multi-turn Magnetic Absolute Angle Sensor

Abstract

The invention relates to a multi-turn magnetic absolute angle sensor, which belongs to the technical field of sensor devices and solves the technical problems of poor adaptability to working conditions and dependence on previous historical readings in the prior art. The solution is: the rotating shaft is set in the casing and its left end extends to the outside of the flange connection surface, and the right end is provided with a magnet installation groove, and a columnar magnet is arranged in the magnet installation groove; a driving wheel is installed on the rotating shaft, and the driving wheel is outside A bearing c is installed, a driven wheel is installed outside the bearing c, and a fixed wheel is arranged outside the driven wheel; an output wheel is arranged to mesh with the teeth on the driven wheel, and a ring magnet is installed on the right end of the output wheel, and the right end surface of the ring magnet is A detection board is installed; a through hole is arranged on the detection board corresponding to the position of the columnar magnet, and an annular HALL array is arranged on the detection board around the position of the through hole. The invention can take direct reading without relying on the previous history in the measuring range of hundreds of circles, has simple installation, good environmental adaptability, and excellent impact resistance and vibration performance.

Description

technical field [0001] The invention belongs to the technical field of sensor devices, in particular to a multi-turn magnetic absolute angle sensor. Background technique [0002] An angle sensor is a device that converts the motion state of a rotating object into an electrical signal. The commonly used angle sensors mainly include rotary potentiometers, resolvers, photoelectric encoders, and magnetic absolute angle sensors. According to different measurement methods, angle sensors are divided into incremental angle sensors and absolute angle sensors. The absolute angle sensor is a sensor device that converts the absolute angle of an object's motion into an electrical signal output. Position, strong anti-interference ability, no cumulative error, etc., especially the multi-turn absolute angle sensor, has a wide measurement range and can accurately record the rotation of the measured shaft even if the power is cut off. It is an important component of modern automatic control s...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art, solve the technical problems of the multi-turn magnetic absolute angle sensor in the prior art, such as poor environmental adaptability, shock resistance, vibration and electromagnetic compatibility, and dependence on previous historical readings, and provide a device that can In the measurement range of hundreds of turns, it does not depend on the previous historical direct reading, simple installation, good environmental adaptability, shock resistance, and excellent vibration resistance. Multi-turn magnetic absolute angle sensor

Images