A magnetorheological elastomer pressure sensor

A magnetorheological elastomer and pressure sensor technology, which is applied in the measurement of fluid pressure, the measurement of fluid pressure through electromagnetic components, and the measurement of force by measuring the change of magnetic properties of materials caused by applied stress, which can solve the problem of sensor performance index attenuation, Deterioration, unable to use normally, etc., to achieve the effect of good magnetic permeability, high linearity and sensitive response

Inactive Publication Date: 2016-04-20
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

With the aggravation of this dislocation or fracture, the performance index of the sensor will gradually decay and deteriorate until it cannot be used normally.

Method used

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  • A magnetorheological elastomer pressure sensor
  • A magnetorheological elastomer pressure sensor

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] Such as figure 1 As shown, the magnetorheological elastomer pressure sensor of the present invention has a hexahedral structure as a whole, including a magnetizer 2 and a magnetorheological elastomer 4; it is characterized in that it also includes a permanent magnet 3;

[0045] There are two permanent magnets 3 in number, which are upper permanent magnets and lower permanent magnets;

[0046] There are two magnetorheological elastomers 4;

[0047] The above-mentioned magnetizer 2 is L-shaped, and the number is four;

[0048] The above-mentioned magnetizer 2, the magnetorheological elastomer 4 and the permanent magnet 3 are fixedly connected into one body in order to form a closed rectangular frame together; wherein, the above-mentioned upper permanent magnet and the lower permanent magnet are respectively arranged on the upper and lower sides of the above-ment...

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Abstract

The invention discloses a magneto-rheological elastomer pressure sensor. A pair of permanent magnets is added inside the pressure sensor, magneto-rheological elastomers are arranged in a closed magnetic field produced by the permanent magnets, the magnetic field produced by the permanent magnets is utilized to prevent particle chains inside the magneto-rheological elastomers from breaking and sliding, the particle chains can be 'forcedly' and timely reset even if the malposition or breakage of the particle chains inside the magneto-rheological elastomers occurs, and accordingly the orientations of the 'particle chains' inside the magneto-rheological elastomers are always in a stable and consistent state. The magneto-rheological elastomer pressure sensor is simple in structure and compact in layout and has the advantages of being sensitive in response, small in hysteresis difference value, high in linearity, good in repeatability, long in service life and the like.

Description

technical field [0001] The invention relates to a pressure sensor, in particular to a magneto-rheological elastic body pressure sensor. Background technique [0002] Magnetorheological elastomer is a new type of smart material. The preparation method is roughly as follows: disperse micron-sized soft magnetic material particles in liquid polymers, and under the action of an external magnetic field and temperature field, the above-mentioned mixture undergoes a magnetorheological effect to magnetize the particles and form an ordered structure; continue The elastic solid formed by maintaining the magnetic and temperature fields until the polymer solidifies is a magnetorheological elastomer. [0003] Due to the particularity of the internal particle structure of magnetorheological elastomers, its conductivity is different from that of general conductive polymer composites in which fillers are randomly distributed. During the preparation of magnetorheological elastomers, the par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/12G01L9/16
Inventor 朱绪力肖林京滕桂荣范亚敏王传萍孙朝阳
Owner SHANDONG UNIV OF SCI & TECH
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