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Generalized magnetoelectric effect measurement method with temperature compensation

A magnetoelectric effect and temperature compensation technology, which is applied in the magnetic measurement environment, magnetic performance measurement, and measurement devices, etc., to achieve the effects of strong anti-interference ability, improved accuracy, and low power consumption

Pending Publication Date: 2021-10-01
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a generalized magnetoelectric effect measurement method with temperature compensation, which solves the influence of temperature difference on magnetic sensor detection and anti-interference ability in the current technical solution. Technical difficulties to improve the accuracy of measurement results

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  • Generalized magnetoelectric effect measurement method with temperature compensation
  • Generalized magnetoelectric effect measurement method with temperature compensation
  • Generalized magnetoelectric effect measurement method with temperature compensation

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail

[0023] Referring to Fig. 1(a) and Fig. 1(b), a partial schematic diagram of the experimental device of a generalized magnetoelectric effect measurement method with temperature compensation, including piezoelectric ceramics 1, at a position 15cm ± 1cm away from the experimental base 6, with a sample Fixture 3 is suspended and fixed in Dewar temperature control box 2. At the same time, it is placed in parallel at a distance of 1 cm ± 0.5 cm from the position of Helmholtz coil 4. Iron 5 is driven by a DC program-controlled voltage source to generate a DC magnetic field with a maximum magnitude of 3500Oe. The Helmholtz coil 4 is sequentially connected with the power amplifier and the waveform generator, and the Helmholtz coil 4 (with a maximum amplitude of 30Oe) is used to provide an AC magnetic field. In the experiment, the magnitude of the DC magnetic fiel...

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Abstract

The invention discloses a generalized magnetoelectric effect measurement method with temperature compensation. The method comprises the steps: placing a piezoelectric material PZT in a cantilever beam structure into a Dewar temperature control box in a suspended mode, and controlling and detecting temperature changes; using a coil for providing an alternating-current magnetic field and connected with a voltage amplifier, and the voltage amplifier is controlled by a waveform generator. placing an electromagnet in the vertical direction of the piezoelectric material PZT, taking the electromagnet as a direct-current magnetic field generator which is connected with a direct-current voltage source, measuring the size of a direct-current magnetic field, enabling the direction of the direct-current magnetic field to be perpendicular to an alternating-current magnetic field generated by a Helmholtz coil, enabling the changing magnetic field to generate eddy current in a sample, controlling the temperature through the Dewar temperature control box, setting different alternating-current magnetic field frequencies and temperatures by taking room temperature as compensation standard data Us, and collecting relative magnetoelectric voltage U; and comparing the acquired data with the standard data Us, solving a data change difference value delta U, and determining compensation data P, so that the interference of the temperature on a measurement system is eliminated, and the reliability and accuracy of the magnetic field sensor are improved.

Description

technical field [0001] The invention belongs to the technical field of magnetoelectric sensing and detection, and in particular relates to a generalized magnetoelectric effect measurement method with temperature compensation. Background technique [0002] With the development of modern artificial intelligence and wireless energy transmission, sensor technology has received extensive attention. The research and development of sensor technology can quickly detect and process various energy information and convert them into signals compatible with computers, which greatly promotes the development of human intelligence and information technology. In the current technical research of magnetic field sensors, the properties of sensitive materials are particularly important in the process of measuring signals. However, in the external environment of different temperatures, the performance of the magnetoelectric material will change significantly, and the sensitivity will change acc...

Claims

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Application Information

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IPC IPC(8): G01R33/12G01R33/00
CPCG01R33/12G01R33/0082
Inventor 张嘉伟付庚魏晓飞王力陈驰
Owner XIAN UNIV OF TECH
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