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Piston-type first-order buoyancy magnetic liquid inertial sensor

An inertial sensor and magnetic liquid technology, applied in the direction of using inertial force for acceleration measurement, etc., can solve the problems of easy fragmentation of permanent magnets, difficult magnetic liquid flow, low viscous energy consumption efficiency, etc. Suspended, avoids the effect of difficult flow

Inactive Publication Date: 2015-09-23
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Piston-type first-order buoyancy magnetic liquid inertial sensor
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Embodiment Construction

[0018] The present invention will be further described with accompanying drawing as specific embodiment:

[0019] A piston-type first-order buoyancy magnetic liquid inertial sensor, such as figure 1 , the damping device includes: a first suspension permanent magnet 1, a first limit permanent magnet 2, a housing 3, a magnetic liquid 4, a limit shell 5, a second limit permanent magnet 6, a second suspension permanent magnet 7, The second induction coil 8 , the first induction coil 9 and the mass block 10 .

[0020] Connections between the parts making up the device:

[0021] The mass block 10 is inserted into the inner hole of the limiting shell 5 and fixedly connected so that the limiting shell 5 is located in the middle of the mass block 10, thereby forming a mass block assembly;

[0022] The housing 3 is filled with magnetic liquid 4, and the mass block assembly is loaded into the housing 3; after the housing 3 is sealed, the first limiting permanent magnet 2 is fixedly ins...

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Abstract

The invention discloses a piston-type first-order buoyancy magnetic liquid inertial sensor, which belongs to the vibration field of mechanical engineering, and successfully solves the problem that the existing magnetic fluid acceleration sensor cannot be applied in engineering practice due to various kinds of structure problems. The piston-type first-order buoyancy magnetic liquid inertial sensor comprises a first suspended permanent magnet (1), a first limiting permanent magnet (2), a shell body (3), a magnetic liquid (4), a limiting shell (5), a second limiting permanent magnet (6), a second suspended permanent magnet (7), a second induction coil (8), a first induction coil (9) and a mass (10). When an acceleration signal exists in the outside world, the mass assembly moves within a cavity body, the volume distribution of the magnetic liquid (4) in shell body (3) changes, thus the second induction coil (8) and the first induction coil (9) detect electrical inductance signals and output the electrical 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): G01P15/08
Inventor 李德才姚杰常建军
Owner BEIJING JIAOTONG UNIV
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