Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Brillouin spectrum peak finding method based on incomplete spectrum splicing

A incomplete and spectral technology, applied in the field of BOTDR measurement, can solve the problem of inability to obtain strain information along the high-speed railway, and achieve the effect of compensating for insensitivity and improving the sensing effect.

Active Publication Date: 2015-07-29
NANJING UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the incomplete spectrum cannot determine the correct peak frequency of the Brillouin spectrum through Lorenz curve fitting, the system cannot obtain the strain information along the high-speed rail at this time, and cannot screen out the damaged sound barrier in time

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
  • Brillouin spectrum peak finding method based on incomplete spectrum splicing
  • Brillouin spectrum peak finding method based on incomplete spectrum splicing
  • Brillouin spectrum peak finding method based on incomplete spectrum splicing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0029] It is known that the Brillouin spectrum is in the form of a Lorenz curve, and its expression is:

[0030] g B ( Ω ) = g p ( Γ B / 2 ) 2 ( Ω - Ω B ) 2 + ( Γ B / 2 ) ...

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

No PUM Login to View More

Abstract

The invention discloses a Brillouin spectrum peak finding method based on incomplete spectrum splicing. The method comprises performing splicing treatment on measured data, and on the basis of incomplete spectra, obtaining the peak frequency of real Brillouin spectra. The Brillouin spectrum peak finding method based on incomplete spectrum splicing remedies the insensitivity of a BOTDR (Brillouin optical time domain reflectometer) to rapidly-changed external interference, improves the sensing effects of the BOTDR in extreme environments and is significant to practical engineering application.

Description

technical field [0001] The invention relates to a Brillouin spectrum peak-finding method based on incomplete spectrum splicing, which belongs to the field of BOTDR measurement. Background technique [0002] With the wide application of major projects such as bridges, tunnels, and dams, it is necessary to monitor their safety, which is conducive to the early detection of potential safety hazards in the project and the effect of disaster prevention and mitigation. Due to the long distance, large scope and complex structure of this kind of project, the traditional detection technology is not suitable for it. Distributed optical fiber sensing technology based on optical time domain reflectometer (BOTDR) technology can measure various physical quantities such as temperature and strain, and has the advantages of high spatial resolution, long sensing distance and high precision. widespread attention. [0003] Brillouin scattering is caused by the interaction between the optical f...

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): G01L1/24
Inventor 李密焦文祥张旭苹宋跃江路元刚王峰
Owner NANJING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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