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A shock-resistant magnetic liquid tactile sensor

A tactile sensor and magnetic liquid technology, applied in the field of sensors, can solve the problems of weak impact resistance and large force surface, and achieve the effect of small diameter, strong impact resistance and wide application range

Active Publication Date: 2021-04-09
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above forms of tactile sensors have weak impact resistance on the one hand, and larger force-bearing surfaces on the other hand, making it impossible to achieve precise touch perception of small areas.

Method used

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  • A shock-resistant magnetic liquid tactile sensor

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Experimental program
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Effect test

Embodiment Construction

[0014]Attachfigure 1Further explanation of the invention for the specific embodiments:

[0015]An impact magnetic liquid haptic sensor including: suspension force permanent magnet 1, non-magnetic housing 2, first Hall element 3-1, second Hall element 3-2, non-magnetically magnetine metal block 4, Roller 5, linear bearing 6, haptic link 7, excitation permanent magnet 8, magnetic liquid 9.

[0016]The connection between the sensor part:

[0017]The center of the non-conducting metal block 4 is fixed to the end of the haptic link 7, and then the haptic link 7 is constrained in the upper circular hole of the non-magnetic housing 2 by a linear bearing 6, and then the roller 5 and the haptic link 7 The end portion located outside the non-conducting housing 2 is fixed, and then the magnetic liquid 9 is injected into the cavity of the non-conductive housing 2 until it is filled with sealed, and since the density of the non-conductive metal block 4 is much greater than the magnetic liquid 9 due to th...

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Abstract

A shock-resistant magnetic liquid tactile sensor suitable for measuring complex surface profiles. The sensor includes: levitation force permanent magnet (1), non-magnetic shell (2), first Hall element (3-1), second Hall element (3-2), non-magnetic metal block (4) , a roller (5), a linear bearing (6), a tactile connecting rod (7), an excitation permanent magnet (8), and a magnetic fluid (9). When the non-magnetic metal block (4) moves upward, the magnetic field at the first Hall element (3-1) increases, and the magnetic field at the second Hall element (3-2) weakens, and the external bridge circuit will output positive A voltage signal indicates that pits appear on the surface to be tested; when the non-magnetic metal block (4) moves downward, the magnetic field at the first Hall element (3-1) weakens, and the second Hall element (3-2 ), the magnetic field at ) is enhanced, and the external bridge circuit will output a reverse voltage signal at this time, indicating that the contour of the surface to be tested has a protrusion.

Description

Technical field[0001]The present invention belongs to the field of sensors, suitable for measurement of complex surface profiles.Background technique[0002]With the development of sensing technology, the form of tactile sensors is growing, and the main forms of common haptic sensors include capacitive and resistance:, for example, patent "Touch Sensor" (Patent Application No.: 201310632826.5), "Touch Sensor and Composition The haptic sensor unit of the haptic sensor (Patent Application No.: 201880018515.0), "Journal of Joint Temperature Sensor" (Patent Application No.: 201780043020.9) External excitation; such as patented "active haptic sensor" (patent application number: 201610894052.7) "Multi-layer haptic sensor" (patent application number: 201810400690.8), etc. The resistance changes, thus detecting external excitation.[0003]The above-mentioned haptic sensor is weak on the one hand, and the other hand is large, and the precision touch sensation of the fine region cannot be complet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/34G01B7/28
CPCG01B7/28G01B7/34
Inventor 谢君李德才
Owner BEIJING JIAOTONG UNIV