Rotating body position detection device

A detection device and a rotating body technology, applied in the detection field, can solve the problems of large axial space and occupation of magnetic encoders, etc.

Pending Publication Date: 2021-09-07
NANJING CHERVON IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a rotating body position detection device to solve the technical problem in the prior art that the magnetic encoder for detecting the position of the rotor occupies a relatively large axial space

Method used

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Experimental program
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Effect test

Embodiment 1

[0039] See Figures 1 to 7 , The embodiment of the present invention provides a rotating body position detecting device, which can detect the position of the rotor. Here, the rotating body can be a rotating body having a central axis and can rotate about the center axis, such as a motor rotor 10 or other rotating member.

[0040] The rotating body position detecting means includes a magnetic ring 11, a computing unit, and at least two Hall sensors 21, and the magnetic ring 11 is fixed to the rotating body, and the magnetic ring 11 includes at least one pair of magnetic poles, the magnetic pole is radially distributed along the magnetic ring 11. In the present embodiment, the Hall sensor 21 is disposed at intervals of the outer circumferential surface of the magnetic ring 11 for detecting the magnetic field strength of the outer surface of the magnetic ring 11; the calculation unit is used to calculate the magnetic field strength calculated according to each Hall sensor 21. The posi...

Embodiment 2

[0057] Figure 8 to 10 The second embodiment is shown, wherein the same or corresponding components as the embodiments are marked with reference to the embodiments. For the sake of simplicity, only the difference points of the second embodiment and the embodiment one are described. The difference is that the circuit board 22 is ringing in the outer circumference of the magnetic ring 11 such that the circuit board 22 avoids the vents of the wire slots on the motor, facilitating the electric heat dissipation.

[0058] A legs are provided on the circuit board 22, and there is a mounting hole on the feet. The pins are fixedly connected to the housing 30 of the motor through the fastener, and the fasteners are in the mounting hole. In the present embodiment, four pins are provided around the circuit board 22, and one mounting hole is opened on each leg.

[0059] In the present embodiment, the sensor support frame 23 is enabled in the outer circumference of the Hall sensor 21, which is ...

Embodiment 3

[0063] For the sake of simplicity, only the difference points of the third embodiment and the embodiment one are described. The difference is that at least two Hall sensors 21 are disposed on the end surface of the magnetic ring 11 for detecting the magnetic field strength of the end face of the magnetic ring 11; the calculation unit is used to calculate the magnetic field strength calculated according to each Hall sensor 21 The position of the body.

[0064] When the rotating body is rotated about the central axis, the magnetic ring 11 is rotated, and the Hall sensor 21 can detect the magnetic field strength of the end face of the magnetic ring 11, in which the position of the rotating body can be detected. The Hall sensor 21 takes up a small space, facilitates the spatial layout, making the axial structure compact. The spatial position of the rotating body can be obtained by the signal output by the Hall sensor 21, which is easy to control.

[0065] Specifically, the two Hall se...

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PUM

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Abstract

The invention discloses a rotating body position detection device, which belongs to the technical field of detection, and comprises a magnetic ring, a calculation unit and at least two Hall sensors, wherein the magnetic ring is fixed on a rotating body, the magnetic ring comprises at least one pair of magnetic poles, and the magnetic poles are distributed along the radial direction of the magnetic ring; the at least two Hall sensors are arranged around the peripheral surface of the magnetic ring at intervals or are arranged opposite to the end surface of the magnetic ring, and are used for detecting the magnetic field intensity of the magnetic ring; and the calculation unit is used for calculating the position of the rotating body according to the magnetic field intensity detected by each Hall sensor. When the rotating body rotates around the central axis, the magnetic ring is driven to rotate, the Hall sensor can detect the magnetic field intensity of the magnetic ring, any position of the rotating body can be detected through the calculation unit, and comprehensive detection is achieved. The Hall sensor does not occupy space, space layout is facilitated, and the axial structure is compact.

Description

Technical field [0001] The present invention relates to the field of detection, and more particularly to a rotating body position detecting device. Background technique [0002] The rotating body operated in a rotating manner, during the rotation process, the rotation position is constantly changing, such as shaft categories, hub members, and the like. A typical motor includes a stator and a rotor, to accurately control the motor, need to detect the position of the rotor. In the prior art, a magnetic encoder is used as a position detecting device, but the magnetic encoder occupies a large space, which is not conducive to the spatial layout of the motor, so that the motor is large. Inventive content [0003] It is an object of the present invention to provide a rotating body position detecting device to solve the technical problem of magnetic encoder that detects the position of the rotor in the prior art to occupy a technical problem of large axial space. [0004] As mentioned a...

Claims

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Application Information

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IPC IPC(8): H02K11/215
CPCH02K11/215G01D5/145
Inventor 徐中全
Owner NANJING CHERVON IND
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