A fiber Bragg grating space magnetic field intensity sensor based on giant magnetostrictive material and its application method

A technology of giant magnetostriction and magnetic field strength, which is used in the use of magneto-optical equipment for magnetic field measurement, magnetic field size/direction, etc.

Inactive Publication Date: 2016-06-08
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a fiber Bragg grating space magnetic field intensity sensor based on a giant magnetostrictive material and a method of use thereof, so as to solve the problem of real-time on-line monitoring of the space magnetic field intensity

Method used

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  • A fiber Bragg grating space magnetic field intensity sensor based on giant magnetostrictive material and its application method
  • A fiber Bragg grating space magnetic field intensity sensor based on giant magnetostrictive material and its application method

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Embodiment 1

[0047] Embodiment 1: as Figure 1-2 As shown, a fiber Bragg grating spatial magnetic field intensity sensor based on giant magnetostrictive materials, including a polytetrafluoroethylene shell 1, a fiber Bragg grating 2, a fixed bump 3 of an optical fiber, a polytetrafluoroethylene sleeve 4, and an external optical fiber 5 , giant magnetostrictive material Ⅰ7, giant magnetostrictive material Ⅱ8, and giant magnetostrictive material Ⅲ9; among them, giant magnetostrictive material Ⅰ7, giant magnetostrictive material Ⅱ8, and giant magnetostrictive material Ⅲ9 are respectively located in the PTFE shell There are two optical fiber fixing bumps 3 on the three orthogonal edges in 1 and the two ends of the surface of the three giant magnetostrictive materials, and the giant magnetostrictive material II 8 is connected to the polytetrafluoroethylene shell 1 with elastic epoxy glue , the middle of the two optical fiber fixing bumps 3 is the fiber Bragg grating 2, the fiber Bragg grating 2...

Embodiment 2

[0053] Embodiment 2: as Figure 1-2 As shown, a fiber Bragg grating spatial magnetic field intensity sensor based on giant magnetostrictive materials, including a polytetrafluoroethylene shell 1, a fiber Bragg grating 2, a fixed bump 3 of an optical fiber, a polytetrafluoroethylene sleeve 4, and an external optical fiber 5 , giant magnetostrictive material Ⅰ7, giant magnetostrictive material Ⅱ8, and giant magnetostrictive material Ⅲ9; among them, giant magnetostrictive material Ⅰ7, giant magnetostrictive material Ⅱ8, and giant magnetostrictive material Ⅲ9 are respectively located in the PTFE shell There are two optical fiber fixing bumps 3 on the three orthogonal edges in 1 and the two ends of the surface of the three giant magnetostrictive materials, and the giant magnetostrictive material II 8 is connected to the polytetrafluoroethylene shell 1 with elastic epoxy glue , the middle of the two optical fiber fixing bumps 3 is the fiber Bragg grating 2, the fiber Bragg grating 2...

Embodiment 3

[0058] Embodiment 3: as Figure 1-2 As shown, a fiber Bragg grating spatial magnetic field intensity sensor based on giant magnetostrictive materials, including a polytetrafluoroethylene shell 1, a fiber Bragg grating 2, a fixed bump 3 of an optical fiber, a polytetrafluoroethylene sleeve 4, and an external optical fiber 5 , giant magnetostrictive material Ⅰ7, giant magnetostrictive material Ⅱ8, and giant magnetostrictive material Ⅲ9; among them, giant magnetostrictive material Ⅰ7, giant magnetostrictive material Ⅱ8, and giant magnetostrictive material Ⅲ9 are respectively located in the PTFE shell There are two optical fiber fixing bumps 3 on the three orthogonal edges in 1 and the two ends of the surface of the three giant magnetostrictive materials, and the giant magnetostrictive material II 8 is connected to the polytetrafluoroethylene shell 1 with elastic epoxy glue , the middle of the two optical fiber fixing bumps 3 is the fiber Bragg grating 2, the fiber Bragg grating 2...

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Abstract

The invention relates to a fiber Bragg optical grating spatial magnetic field intensity sensor based on giant magnetostriction materials and a use method of the fiber Bragg optical grating spatial magnetic field intensity sensor, and belongs to the technical field of electronic measurement. The fiber Bragg optical grating spatial magnetic field intensity sensor comprises a polytetrafluoroethylene outer shell, fiber Bragg optical gratings, fiber fixing convex points, a polytetrafluoroethylene casing pipe, an external fiber, the first giant magnetostriction material, the second giant magnetostriction material and the third giant magnetostriction material, wherein the first giant magnetostriction material, the second giant magnetostriction material and the third giant magnetostriction material are located at three orthogonal edges in the polytetrafluoroethylene outer shell, the two ends of the surface of each giant magnetostriction material are respectively provided with two fiber fixing convex points, the second giant magnetostriction material is connected with the polytetrafluoroethylene outer shell through elastic epoxy glue, the position between every two fiber fixing convex points is provided with one fiber Bragg optical grating, and the fiber Bragg optical gratings are led out from small holes protected by the polytetrafluoroethylene casing pipe and are connected with the external fiber. By means of the fiber Bragg optical grating spatial magnetic field intensity sensor based on the giant magnetostriction materials and the use method of the fiber Bragg optical grating spatial magnetic field intensity sensor, the spatial magnetic field intensity can be monitored in real time and on line.

Description

technical field [0001] The invention relates to a fiber Bragg grating space magnetic field intensity sensor based on a giant magnetostrictive material and a method for using the same, belonging to the technical field of optoelectronic measurement. Background technique [0002] Magnetic field sensors are an important part of the sensor field, and have been widely used in many fields such as industry, agriculture, national defense, biology, medicine, and aerospace. The current magnetic field sensors are mainly based on Hall devices, magnetoresistors, fluxgates, nuclear magnetic resonance, etc., but traditional sensors have weaknesses such as inability to electrically insulate and narrow frequency response. Optical fiber magnetic field sensors have the advantages of electrical insulation and all-optical communication, and can work stably in harsh environments. Giant magnetostrictive material is a directional crystalline material that changes in volume and length in a magnetic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/032
Inventor 李川肖元强曹敏陈富云赵成均赵振刚
Owner KUNMING UNIV OF SCI & TECH
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