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Quasi-two-dimension magnetic fluid acceleration transducer

A technology of acceleration sensor and magnetic fluid, which is applied in the direction of acceleration measurement using inertial force, which can solve the problems of inability to detect and change the acceleration sensor

Inactive Publication Date: 2008-08-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Once the above-mentioned acceleration sensor is installed, it can only detect the input acceleration in the same direction, but cannot detect the acceleration in other directions, that is, its detection direction is one-dimensional, and at the same time, the material inside the acceleration sensor cannot be changed once it is manufactured. , these are their disadvantages

Method used

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  • Quasi-two-dimension magnetic fluid acceleration transducer

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Embodiment Construction

[0033] The quasi-two-dimensional magnetic fluid acceleration sensor of the present invention includes a non-magnetic cavity, a mass block, a detection device and a magnetic fluid. The non-magnetic cavity is a closed container made of non-magnetic materials; the mass block is arranged in the middle of the non-magnetic cavity. , the normal direction between the two ends of the mass block and the contact surface of the non-magnetic cavity forms a certain inclination angle with the axis of the mass block; and a detection device is provided between the contact surfaces, and between the mass block, the detection device and the non-magnetic cavity The set pre-tightening pressure is maintained between; and the cavity formed by the non-magnetic cavity and the mass block is filled with magnetic fluid; the detection device is used to detect the pressure change between the mass block and the non-magnetic cavity, and output the acceleration detection result signal.

[0034]Specifically, a m...

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Abstract

The invention provides a quasi two dimensional magnetism fluid accelerometer including non-magnetic cavity, mass block, test device and magnetic fluid, the non-magnetic cavity is a closed container formed by non-magnetic material; test device is equipped in the middle part of the non-magnetic cavity, the mass block double end faces are inclined at a certain angle with normal of interface of non-magnetic cavity and axes of mass block; the test device is equipped between interface, and keeps set preload pressure between the mass block, test device and non-magnetic cavity; and the cavity which is formed between the non-magnetic cavity and mass block is full of magnetic fluid; the test device is used for testing pressure changes between the mass block and the non-magnetic cavity, and outputs acceleration test result signal. The invention has merits of large measure range, controllable measure range, high sensitivity, high reliability, intelligence, long service life and so on.

Description

technical field [0001] The invention relates to the field of production and application of acceleration sensors, in particular to a quasi-two-dimensional acceleration sensor based on magnetic fluid. Background technique [0002] At present, acceleration sensors are commonly used in many technical fields, such as automobile motion control, construction machinery motion control, mechanical vibration detection, aerospace, home appliance performance detection and so on. [0003] Existing acceleration sensors usually have the following structures. [0004] An acceleration sensor adopts a cantilever beam structure, including a cantilever beam whose fixed end is arranged on a substrate for reciprocating elastic deformation movement, and the external acceleration is determined by detecting the position of the cantilever beam. The commonly used detection method is to set a cantilever beam with one end fixed and the other end free to move, attach a strain gauge to the root of the can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/08
Inventor 程韬波徐晨刘桂雄邱东勇
Owner SOUTH CHINA UNIV OF TECH
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