Optical-frequency-domain-reflection-based long-distance fiber distributed disturbance sensing signal processing method

A long-distance optical fiber and optical frequency domain reflection technology, which is applied in the direction of transmitting sensing components with optical devices, can solve problems such as low spatial resolution, large sensing signal noise, and indistinguishable positions of multi-point disturbances, etc., to reduce The effect of noise and disturbance position is obviously prominent

Active Publication Date: 2017-10-20
TIANJIN QIU SHI FIBER TECH
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a long-distance optical fiber distributed disturbance sensing signal processing method based on optical frequency domain reflection to overcome the existence o

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
  • Optical-frequency-domain-reflection-based long-distance fiber distributed disturbance sensing signal processing method
  • Optical-frequency-domain-reflection-based long-distance fiber distributed disturbance sensing signal processing method
  • Optical-frequency-domain-reflection-based long-distance fiber distributed disturbance sensing signal processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...

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 provides an optical-frequency-domain-reflection-based long-distance fiber distributed disturbance sensing signal processing method. The method comprises: S1, with an image processing method, noise-reduction enhanced-feature processing is carried out on a measurement signal; and S2, on the basis of a noise reduction method with spatial resolution loss, the disturbance position is highlighted by using low-pass filter noise reduction under the circumstance that the spatial resolution is ensured, so that multi-point disturbance is distinguished. According to the optical-frequency-domain-reflection-based long-distance fiber distributed disturbance sensing signal processing method, the noise is reduced and the disturbance feature information is kept. During multi-point disturbance distinguishing, the spatial-resolution-loss-free noise reduction method is used; and with the low-pass filter noise reduction, the disturbance position is highlighted under the circumstance that the spatial resolution is ensured.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensors, and in particular relates to a signal processing method based on optical frequency domain reflection and long-distance optical fiber distributed disturbance sensing. Background technique [0002] Long-distance distributed disturbance sensing is widely used in many fields such as people's livelihood, national defense and security, such as structural health monitoring of aircraft, spacecraft, ships, national defense equipment, industrial equipment, bridges and culverts, etc., using optical frequency domain reflection The Rayleigh scattering spectrum shift of medium-single-mode fiber can realize the long-distance distributed disturbance sensing with high precision and high spatial resolution. [0003] However, in the existing optical fiber disturbance sensing based on optical frequency domain reflection, most of them have problems such as indistinguishable multi-point disturbance posit...

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): G01D5/353
CPCG01D5/353
Inventor 刘柯
Owner TIANJIN QIU SHI FIBER 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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap