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A single-axis magnetic liquid inertial sensor

An inertial sensor, magnetic liquid technology, applied in instruments, fluid velocity measurement, devices using electric/magnetic methods, etc., can solve the problems of low linearity and weak signal, and achieve improved linearity and high linearity. Effect

Inactive Publication Date: 2018-02-16
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing magnetic liquid acceleration sensor cannot be applied in engineering practice due to various structural problems, such as low linearity and weak signal

Method used

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  • A single-axis magnetic liquid inertial sensor
  • A single-axis magnetic liquid inertial sensor
  • A single-axis magnetic liquid inertial sensor

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Experimental program
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Embodiment Construction

[0014] The present invention will be further described with accompanying drawing as specific embodiment:

[0015] A single-axis magnetic liquid inertial sensor such as figure 1 , the sensor includes: a housing 1 , a left sensing piece 2 , a spacer 3 , a first permanent magnet 4 , a magnetic fluid 5 , a right sensing piece 6 and a second permanent magnet 7 .

[0016] The upper surface of the four spacers 3 is fixedly connected with the lower surface of the first permanent magnet 4, so that the four spacers 3 are symmetrically distributed on the four corner positions of the lower surface of the first permanent magnet 4, and the upper surface of the second permanent magnet 7 The surface is fixedly connected with the lower surfaces of the four gaskets 3, and the first permanent magnet 4 and the second permanent magnet 7 are separated by the four gaskets 3 to form a gap to form a moving assembly.

[0017] The right end surface of the left sensing piece 2 is fixedly connected with ...

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Abstract

The invention discloses a single-axis magnetic liquid inertial sensor, which belongs to the field of mechanical engineering measurement. The problem that the existing magnetic liquid inertial sensor cannot be practically applied in engineering practice is solved. The device includes a housing (1), a left induction piece (2), a spacer (3), a first permanent magnet (4), a magnetic fluid (5), a right induction piece (6) and a second permanent magnet (7) . When vibration occurs in the outside world, the first permanent magnet (4) and the second permanent magnet (7) move relative to the housing, and the left and right induction pieces cut the magnetic induction line at a certain speed, thereby generating induced electromotive force, and passing through the induction piece The external circuits at the four corners output voltage signals, and the speed and output voltage are in a linear relationship, with good linearity and high sensitivity.

Description

technical field [0001] The invention relates to the field of mechanical engineering measurement. Background technique [0002] Inertial sensors can be developed into speed sensors, acceleration sensors, displacement sensors and inclination sensors, etc., and have a wide range of applications in various fields such as transportation, biomedicine, oil exploration, and military industry. With the continuous development of science and technology, people's demand for inertial sensors with high sensitivity, high reliability, high resolution and good linearity is increasing. Since the magnetic liquid inertial sensor is highly sensitive to inertial force, it has the advantages of simple structure, small size, no mechanical loss and long life. However, the existing magnetic liquid inertial sensors 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 numbe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01P3/42G01P5/08
Inventor 李德才姚杰吴少峰
Owner BEIJING JIAOTONG UNIV