Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Electrostrictive effect based fiber bragg grating magnetic field sensor and application method thereof

A magnetic field sensor and telescopic technology, applied in the size/direction of the magnetic field, the use of electromagnetic devices for magnetic field measurement, instruments and other directions, which can solve the problem of measurement sensitivity and other issues

Active Publication Date: 2014-03-19
KUNMING UNIV OF SCI & TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an optical fiber Bragg grating magnetic field sensor based on the electrostrictive effect and its use method, which is formed by laminating 10 piezoelectric ceramic sheets to solve the problem of measurement sensitivity of the strain of a single piezoelectric ceramic sheet , and fiber Bragg gratings are used as sensing elements to solve the problem that traditional sensing elements can only achieve weak magnetic field measurement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electrostrictive effect based fiber bragg grating magnetic field sensor and application method thereof
  • Electrostrictive effect based fiber bragg grating magnetic field sensor and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1: as Figure 1-2 As shown, an optical fiber Bragg grating magnetic field sensor based on the electrostrictive effect includes a DC asynchronous motor 1, a motor shaft 2, a commutator 3, a brush 4, a rectangular coil 5, a bridge rectifier diode 6, a filter capacitor 7, Protective resistor 8, fiber Bragg grating 9, piezoelectric ceramic 10, bonding point 11, externally connected optical fiber 12; DC asynchronous motor 1, motor shaft 2, commutator 3 and rectangular coil 5 are fixed together, brush 4 and The commutator 3 is in contact with each other and the contact of the brush 4 is connected to the bridge rectifier diode 6 through a wire. The point 11 is glued on the piezoelectric ceramic 10 and connected with the externally connected outgoing optical fiber 12 .

[0051] The fiber Bragg grating 9 is pasted on the central axis of the surface of the stacked piezoelectric ceramic 10 by epoxy glue.

[0052] A method for using an optical fiber Bragg grating magne...

Embodiment 2

[0057] Embodiment 2: as Figure 1-2 As shown, an optical fiber Bragg grating magnetic field sensor based on the electrostrictive effect includes a DC asynchronous motor 1, a motor shaft 2, a commutator 3, a brush 4, a rectangular coil 5, a bridge rectifier diode 6, a filter capacitor 7, Protective resistor 8, fiber Bragg grating 9, piezoelectric ceramic 10, bonding point 11, externally connected optical fiber 12; DC asynchronous motor 1, motor shaft 2, commutator 3 and rectangular coil 5 are fixed together, brush 4 and The commutator 3 is in contact with each other and the contact of the brush 4 is connected to the bridge rectifier diode 6 through a wire. The point 11 is glued on the piezoelectric ceramic 10 and connected with the externally connected outgoing optical fiber 12 .

[0058] The fiber Bragg grating 9 is pasted on the central axis of the surface of the stacked piezoelectric ceramic 10 by epoxy glue.

[0059] A method for using an optical fiber Bragg grating magne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Sensitivityaaaaaaaaaa
Login to View More

Abstract

The invention relates to an electrostrictive effect based fiber bragg grating magnetic field sensor and an application method thereof, and belongs to the technical field of optoelectronic measurement. The electrostrictive effect based fiber bragg grating magnetic field sensor comprises a DC asynchronous motor, a motor rotating shaft, a commutator, a brush, a rectangular coil, a bridge rectifier diode, a filtering capacitor, a protective resistor, a fiber bragg grating, piezoelectric ceramic, bonding points and an external extraction optical fiber, wherein the DC asynchronous motor, the motor rotating shaft, the commutator and the rectangular coil are fixed together, the brush is contacted with the commutator, a contact of the brush is connected with the bridge rectifier diode through a wire, a leading-out end of the bridge rectifier diode is connected with the filtering capacitor and the protective resistor, the fiber bragg grating is bonded to the piezoelectric ceramic through the two bonding points and connected with the external extraction optical fiber. The electrostrictive effect based fiber bragg grating magnetic field sensor improves the deformation quantity of the piezoelectric ceramic, expands the measurement range of a magnetic field, and is high in anti-interference capacity, simple in structure and convenient to use.

Description

technical field [0001] The invention relates to an optical fiber Bragg grating magnetic field sensor based on an electrostrictive effect and a method for using the same, belonging to the technical field of optoelectronic measurement. Background technique [0002] In many fields of industrial production and scientific research, people are involved in magnetic field measurement issues, such as magnetic prospecting, geological exploration, magnetic material research, magnetic navigation, isodigit separation, controlled thermonuclear reactions and artificial earth satellites. With the development of high-voltage direct current transmission and transformation, the monitoring of the magnetic field around substations and high-voltage transmission lines is of great significance to the safe operation of the power grid. For this reason, the optical fiber Bragg grating magnetic field sensor with electrical insulation, anti-electromagnetic interference, and all-optical communication has...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01R33/06G01B11/16
Inventor 李川赵成均王敏吉陈富云庄君刚赵振刚谢涛
Owner KUNMING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com