Device and method for detecting rotation state

Abstract

The invention relates a method and a device for testing the rotation state of a rotating shaft. The device comprises a fixed disc, a rotating disc, Hall switches, magnetic elements and the like; n Hall switches and n+1 magnetic elements are respectively and uniformly distributed on circular orbits on the fixed disc and the rotating disc; a stator is fixedly connected with the fixed disc, the rotating shaft and the rotating disc respectively; the rotating shaft penetrates through circular holes in the fixed disc and the rotating disc. When the rotating shaft rotates for a 360/(n*(n+1)) angle each time relative to the stator, only one Hall switch in the n Hall switches is over against the magnetic elements so as to generate an impulse hop. State information, such as the rotating angle, the number of turns and the direction of the rotating shaft can be detected through correlation calculation by counting impulses generated by the Hall switches. According to the device and the method for detecting the rotation state of the rotating shaft, the rotation state of the rotating shaft can be obtained under a non-contact condition, the state information of the rotating shaft can be obtained in the rotation state measurement and application having lower requirement on precision, and thus the device is small in size, simple in structure and easy to mount.

Description

technical field [0001] The present invention relates to an apparatus and method for detecting the state of rotation of a rotating shaft. Specifically, the measuring device is suitable for measuring state information such as the rotation direction of the rotating shaft relative to the fixed part, the current position angle of the rotating shaft, the rotation angle of the rotating shaft, the number of rotations of the rotating shaft, and the rotating speed of the rotating shaft. Background technique [0002] With the continuous improvement of the automatic control level, as an important component of the automatic control system, the angle sensor has been developed rapidly, and has gradually become an important sensor in the fields of instrument measurement, industrial automation, and signal detection. Rotation angle measurement methods are divided into contact and non-contact. Due to the existence of mechanical contact, the contact type is not only easy to wear, but also ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of high cost and complex structure in the existing rotating shaft rotation state detection technology, and provide a rotating shaft rotating state measuring mechanism with Hall switches and magnetic elements, which can obtain the relative position of the rotating shaft under non-contact conditions. State information such as the rotation direction of the fixed part, the current position angle of the shaft, the rotation angle of the shaft, the number of rotations of the shaft, the speed of the shaft rotation, etc., and simplify the structure and reduce the application cost

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