Cylindrical first-order buoyancy magnetic liquid acceleration sensor

An acceleration sensor, magnetic liquid technology, applied in the direction of measuring acceleration, speed/acceleration/impact measurement, instruments, etc., can solve the problems of difficult flow of magnetic liquid, low viscous energy consumption efficiency, fragile permanent magnet, etc. Effects of linearity and sensitivity, resolving fragmentation problems, avoiding flow difficulties

Inactive Publication Date: 2015-12-16
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing magnetic liquid sensor has problems such as difficult flow of magnetic liquid, fragile permanent magnet, poor centering effect and low viscous energy consumption efficiency due to various structural defects, so that it cannot be used in engineering applied in practice

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  • Cylindrical first-order buoyancy magnetic liquid acceleration sensor
  • Cylindrical first-order buoyancy magnetic liquid acceleration sensor
  • Cylindrical first-order buoyancy magnetic liquid acceleration sensor

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Embodiment Construction

[0020] The present invention will be further described with accompanying drawing as specific embodiment:

[0021] A cylindrical first-order buoyancy magnetic liquid acceleration sensor, such as figure 1 , the damping device includes: a first limit permanent magnet 1, a housing 2, an upper V-shaped armature 3, a magnetic liquid 4, a mass 5, a second limit permanent magnet 6, a lower V-shaped armature 7, a first suspension Permanent magnet 8 , second suspended permanent magnet 9 , third suspended permanent magnet 10 , fourth suspended permanent magnet 11 , second induction coil 12 and first induction coil 13 .

[0022] Connections between the parts making up the device:

[0023] The housing 2 is filled with magnetic liquid 4, and the mass block 5 is loaded into the housing 2; after the housing 2 is sealed, the first limit permanent magnet 1 is fixedly installed on the left end surface of the housing 2, The second limit permanent magnet 6 is fixedly installed on the right end s...

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Abstract

A cylindrical first-order buoyancy magnetic liquid acceleration sensor belongs to the field of mechanical engineering vibration, and successfully solves the problem that conventional magnetic liquid acceleration sensors cannot be applied in engineering practice due to a plurality of structure problems. The cylindrical first-order buoyancy magnetic liquid acceleration sensor comprises a first limiting permanent magnet (1), a housing (2), an upper V-shaped armature (3), magnetic liquid (4), a mass block (5), a second limiting permanent magnet (6), a lower V-shaped armature (7), a first suspension permanent magnet (8), a second suspension permanent magnet (9), a third suspension permanent magnet (10), a fourth suspension permanent magnet (11), a second induction coil (12), and a first induction coil (13); when there is an acceleration signal in the outside world, the mass block (5) moves in a cavity, volume distribution of the magnetic liquid (4) in the housing (2) changes, so that the second induction coil (12) and the first induction coil (13) detect and output inductance signals.

Description

technical field [0001] The invention belongs to the field of mechanical sensing detection. Background technique [0002] Acceleration sensors are second only to pressure sensors in terms of sales volume, and are widely used in various fields such as transportation, biomedicine, oil exploration, and military industry. With the continuous development of science and technology, people's demand for acceleration sensors with high sensitivity, high reliability, high resolution and good linearity is increasing. The magnetic liquid acceleration sensor has high sensitivity to inertial force, and has the advantages of simple structure, small size, no mechanical loss and long life. However, the existing magnetic liquid acceleration sensor cannot be applied in engineering practice due to various structural problems. The specific problems are as described in the patents of application number CN103149384A and application number CN103675351A. The device described in this patent adopts the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/105
Inventor 李德才姚杰常建军
Owner BEIJING JIAOTONG UNIV
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