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Magnetoelectric sensor

A magnetoelectric sensor and magnetoelectric sensor technology, applied in the field of magnetoelectricity, to achieve the effect of wide measurement range, easy maintenance and convenient use

Inactive Publication Date: 2018-11-16
XUZHOU CURRENCY MAGNETOELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it has a large output power, the matching circuit is relatively simple; the zero position and performance are stable; most of the existing magnetoelectric sensors are used in the field of small currents, so there are some inconveniences in actual use

Method used

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  • Magnetoelectric sensor
  • Magnetoelectric sensor
  • Magnetoelectric sensor

Examples

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Embodiment Construction

[0013] Referring to the drawings, a magnetoelectric sensor includes a magnetoelectric sensor body 1 composed of two magnetostrictive layers 1.1 and a piezoelectric layer 1.2 disposed between the magnetostrictive layers 1.1.

[0014] As a preferred embodiment of this embodiment, the magnetoelectric sensor body is provided with a magnetic ring 3, and one end of the magnetic ring 3 is provided with a gap 4, and the two ends of the magnetoelectric sensor are connected by a permanent magnet piece 5 and a magnetic ring. The 4 gaps are tightly connected.

[0015] As a preferred implementation of this embodiment, the composite method between the magnetostrictive layer 1 and the piezoelectric layer 2 is to use epoxy resin material for bonding.

[0016] As a preferred implementation of this embodiment, the magnetostrictive layer 1 is a rare earth giant magnetostrictive material.

[0017] As a preferred implementation of this embodiment, the piezoelectric layer 2 is a PZT piezoelectric ...

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Abstract

The invention discloses a magnetoelectric sensor comprising a magnetoelectric sensor body formed by combining two magnetostrictive layers and a piezoelectric layer disposed between the magnetostrictive layers. The magnetostrictive layers may be subjected to a magnetostrictive effect and deformed under the excitation of an external magnetic field change, and transfers the deformation to the piezoelectric layer in order that the piezoelectric layer suffers a piezoelectric effect, thereby converting a magnetic field change generated by the current to be measured into a voltage signal and giving detection information. A current-carrying wire passes through the center of a magnetic ring, alternating current generates an alternating magnetic field, and a voltage signal is generated between lead-out wires. The magnetoelectric sensor is easy to install, convenient to maintain, convenient to use, wide in measurement range, high in measurement accuracy, high in sensitivity, and good in reliability.

Description

technical field [0001] The invention relates to the field of magnetoelectricity, in particular to a magnetoelectric sensor. Background technique [0002] The magnetoelectric sensor uses the principle of electromagnetic induction to convert the input motion speed into the induced potential output in the coil. It directly converts the mechanical energy of the measured object into electrical signal output, and does not need an external power supply for its work. It is a typical active sensor. Due to the large output power of this sensor, it greatly simplifies the matching secondary instrument circuit. Magnetoelectric sensors, sometimes called electrodynamic or inductive sensors, are only suitable for dynamic measurements. Because it has a relatively large output power, the matching circuit is relatively simple; the zero position and performance are stable; most of the existing magnetoelectric sensors are used in the field of small currents, so there are some inconveniences in...

Claims

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Application Information

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IPC IPC(8): G01D5/14
CPCG01D5/14
Inventor 高坤
Owner XUZHOU CURRENCY MAGNETOELECTRICITY
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