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Angle measurement device

An angle measurement and measurement technology, which is applied in the direction of measurement devices, electrical devices, and electromagnetic/magnetic devices to transmit sensing components, which can solve the problem of inability to judge the rotation angle.

Inactive Publication Date: 2009-04-01
杰克陈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing devices that use Hall effect sensors to measure magnetic flux to judge angles cannot judge the entire 360-degree range of rotation angles

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment one. see figure 1 , the angle measuring device 100 includes an annular portion 110 and more than two Hall effect sensors 120a and 120b. The ring portion 110 includes a plurality of magnets 112 . The ring portion 110 rotates around the axis 102 . The number of magnets 112 is generally more than four, and the number of magnets is related to the size of the ring portion 110 . The larger the size of the annular portion 110 , the more magnets may be required to achieve the required measurement accuracy. The magnets 112 are evenly and symmetrically disposed on the ring portion 110 . The magnet 112 includes a magnet 112a with an N pole facing up (S pole facing down) and a magnet 112b with an S pole facing up (N pole facing down). The magnets 112 a and the magnets 112 b are adjacently and alternately disposed on the annular portion 110 . More than two Hall effect sensors 120 are also located around a ring portion 110 . When the ring part 110 rotates, more than...

Embodiment 2

[0028] Embodiment two. when figure 1 When the ring portion 110 in the angle measuring device shown is rotated beyond 90 degrees, the Hall effect sensor cannot recognize the correct rotation angle of the ring portion 110 . Referring to Fig. 3, shown in 4, angle measurement device 200 except figure 1 In addition to the design of the angle measuring device 100, additional components are added (in the second embodiment, the magnet 112 in the first embodiment can be called the first magnet, and the Hall effect sensor 120 can be called the first Hall effect sensor. Hall effect sensor). The periphery of the ring component (such as the gear 210 ) of the angle measuring device 200 has tooth slots 210a. Another linking member (such as the gear 220 ) is connected with the tooth groove 210 a of the ring gear 210 through its tooth groove 220 a. When the ring gear 210 rotates, the gear 220 is synchronously driven to rotate. The gear 220 includes an axle 240 . The axle 240 has threads ...

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Abstract

The invention discloses an angle measuring device, and an annular part comprises a plurality of magnets that are evenly and symmetrically arranged on the annular part. Over two Hall Effect sensors are positioned around the annular part and used for measuring the magnetic fluxes that are caused by the magnets; an angle interpreting unit determines the rotary angle of the annular part according to the magnetic fluxes measured by each Hall Effect sensor. The angle measuring device can measure the rotary angle in a whole range of 360 degrees or a larger range.

Description

technical field [0001] The invention relates to a rotation angle measuring device. Background technique [0002] Existing devices that use Hall effect sensors to measure magnetic flux to determine angles cannot determine the entire 360-degree range of rotation angles. In order to measure the rotation angle of the whole 360 ​​degrees or more, an innovative angle measuring device is expected by the industry. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an angle measuring device, which can measure the rotation angle of 360 degrees or more. [0004] In order to solve the above technical problems, the angle measuring device of the present invention at least includes: [0005] An annular part, including several magnets arranged on it in an even and symmetrical manner, and the annular part rotates around an axis; [0006] two or more Hall effect sensors for measuring the magnetic flux caused by the magnet, located...

Claims

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Application Information

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IPC IPC(8): G01B7/30G01D5/12
Inventor 杰克陈
Owner 杰克陈
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