Magnetic field detection device based on magnetorheological elastomer
A magnetorheological elastomer and detection device technology, which is applied to the use of electromagnetic devices for magnetic field measurement, magnetic field size/direction, etc. The problem is to overcome the failure of the probe, which is difficult to repair, easy to maintain, and has strong anti-interference ability.
Active Publication Date: 2016-11-30
CHONGQING MATERIALS RES INST
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Problems solved by technology
The sensitive element of the first type of magnetic field sensor is composed of semiconductor devices, so the accuracy is easily affected by temperature
The detection element of the second type of magnetic field sensor is a mechanical device, which is not sensitive to temperature, but it must consume extra energy to generate deformation or maintain resonance during measurement, and its structure is complex, the volume is large, and the probe is easily damaged under long-term working conditions. Poor Sensitivity
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[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] figure 1 and figure 2 A magnetic field detection device based on a magnetorheological elastomer is shown, including a housing 1, a piezoelectric generator 2, an insulating film 3, a magnetorheological elastomer 4, a signal processing module 5, a display module 6, and a display housing 7 and wire 8, the probe is composed of housing 1, piezoelectric generating sheet 2, insulating film 3 and magnetorheological elastomer 4, housing 1 is a closed hard insulating housing of cuboid or cylinder, and the piezoelectric The power generation piece 2, the insulating film 3 and the magnetorheological elastomer 4 are packaged in the housing 1. The piezoelectric power generation piece 2 is an existing piezoelectric power generation piece. One side of the piezoelectric power generation piece 2 is coated with an adhesive, coated with The surface of the adhesive is bonded to th...
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The invention discloses a magnetic field detection device based on a magneto-rheological elastomer. The housing adopts a closed hard insulating housing, a piezoelectric generating piece is arranged on one side of the housing, and a magneto-rheological elastomer is arranged on the On the other side of the housing, an insulating film is provided on the opposite surface of the piezoelectric generator and the magnetorheological elastomer, and the insulating film is fully in contact with the piezoelectric generator and the magnetorheological elastomer respectively. It is connected with the input terminal of the signal processing module, and the output terminal of the signal processing module is connected with the display module through wires. The invention adopts the magneto-rheological elastomer whose magneto-control mechanical properties change continuously under the action of the magnetic field, has good stability, can improve the resolution of the device to detect the intensity of the external magnetic field, and improves the sensitivity of the magnetic field sensor, and overcomes the problem of the traditional detection device. It is difficult to repair the problem of probe failure under long-term working conditions. The production process is simple, the operation is simple, the anti-interference ability is strong, and it is easy to maintain.
Description
technical field [0001] The invention relates to a magnetic field sensor, in particular to a magnetic field detection device based on a magnetorheological elastomer, and belongs to the technical field of magnetorheological materials and applications. Background technique [0002] In electrical testing technology, the detection of magnetic field signals will be encountered. At present, a magnetic field detection device composed of a probe and a semiconductor device is used to detect magnetic field signals. Magnetic field detection devices are divided into two categories according to the principle, one is made by using the change of the movement path of the flow in the semiconductor under the action of the magnetic field, and the other is made by using the deformation of the micro-mechanical structure or the change of the resonance frequency under the magnetic field. The sensitive elements of the first type of magnetic field sensor are composed of semiconductor devices, so the ...
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IPC IPC(8): G01R33/06
Inventor 居本祥张登友杨百炼唐锐
Owner CHONGQING MATERIALS RES INST