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Metal baseband-shaped distributed optical fiber sensor

A distributed optical fiber and optical fiber sensor technology, applied in instruments, scientific instruments, optical devices, etc., can solve the problems of lack of pertinence, sensor structure affecting strain temperature transfer, inconvenient sensor layout and installation, etc.

Inactive Publication Date: 2012-02-08
SUZHOU NANZEE SENSING TECH
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  • Abstract
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Problems solved by technology

Most of the currently used distributed optical fiber sensors are improved from communication optical cables, which lack the pertinence of sensing requirements, often have poor coupling between the sensor and the measured object, the sensor structure affects the strain and temperature transfer, and the sensor layout is inconvenient and easily damaged. Defects seriously affect the efficiency of distributed sensor monitoring

Method used

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  • Metal baseband-shaped distributed optical fiber sensor
  • Metal baseband-shaped distributed optical fiber sensor
  • Metal baseband-shaped distributed optical fiber sensor

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Embodiment Construction

[0020] The material of the metal sheet belt 5 has a certain strength and meets certain requirements of ductility, deformability, machinability and corrosion resistance. Especially copper, copper alloy, aluminum, aluminum alloy or stainless steel sheets, etc., strips and sheets of other alloys can also be used.

[0021] Shape characteristics of metal sheet strips: the basic shape is a sheet strip with a certain width and a small thickness. Generally, when a single groove is embedded with a single optical fiber, the thickness is 0.05-1mm, and the width is 5-25mm. When there are multiple grooves, the width increases correspondingly, and the thickness remains unchanged. One or more parallel grooves are arranged on the metal sheet belt, and the depth and width of the grooves are based on the size of the sensing optical fiber. Hollow holes and hollow stripes are arranged on the metal foil base belt. The hollow stripes are perpendicular to the groove lines. There are hollow strip...

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Abstract

The invention relates to a distributed optical fiber sensor. A substrate of the optical fiber sensor is made of a metal material and is of a sheet band shape; grooves are formed on the surface of the sheet band-shaped substrate; sensing optical fibers are put into the grooves; hollow holes are formed in the metal sheet band; the hollow holes are of different specifications; and hollow stripes vertical to groove lines are formed on the grooves. The sensor is surface-mounted; due to the sheet band-shaped structure, the sensor and an object to be sensed have enough contact areas; by virtue of the small hollow holes, the deformation modulus of the sensor can be reduced further; the grooves are used for wedging and protecting the sensing optical fibers; and the hollow stripes vertical to the groove lines are favorable for curved surface sticking. The distributed optical fiber sensor has the characteristics of high coupling property, high sensitivity, convenience in installation, distributed monitoring and the like.

Description

1. Technical field [0001] The invention relates to a structure of a distributed optical fiber sensor. 2. Background Technology [0002] my country is currently in a period of large-scale construction. In various fields such as water conservancy, energy, and transportation, in order to ensure the safety of various projects, buildings, and facilities, it is necessary to monitor deformation, temperature, and other content. Due to the characteristics of distributed sensing, distributed sensing technology has more and more applications in the field of monitoring. [0003] The demodulation technologies of distributed optical fiber sensors mainly include: based on self-published Brillouin Optical Time Domain Reflectormeter (abbreviation: BOTDR), based on stimulated Brillouin Optical Time Domain Analysis (Brillouin Optical Time Domain Analysis) Abbreviation: BOTDA), based on Raman Optical Time Domain Reflectormeter (abbreviation: ROTDR) and based on Rayleigh scattering and Fresnel ...

Claims

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Application Information

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IPC IPC(8): G01K11/32G01B11/16
Inventor 施斌魏广庆胡盛
Owner SUZHOU NANZEE SENSING TECH
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