Working method of low cost distributed sensing device based on W type fiber optic

Abstract

The invention discloses a low cost distributed sensing device based on a W type optical fiber. The low cost distributed sensing device based on the W type optical fiber comprises a control module, a first light source module and a light detector module, wherein the control module is respectively connected with the first light source module and the light detector module; sensor fiber is W type fiber optic, and sequentially comprises fiber core, a first cladding, a second cladding and a third cladding, the fiber core, the first cladding, the second cladding and the third cladding are axially distributed from the centre to edges, and a protective layer is arranged on the outer side of the third cladding; a first 1*2 optical coupler comprises two mutual non-interferential light signal transmission channels, wherein one of the light signal transmission channels is a first channel which guides light signals sent by the first light module to enter the second cladding of the sensor fiber, and the other light signal transmission channel is a second channel which guides reflected light signals in a fiber core of the sensor fiber to enter the light sensor module. The low cost distributed sensing device based on the W type optical fiber is convenient to use, low in cost, and a working method of the low cost distributed sensing device based on the W type fiber optic is easy to achieve, convenient to promote and use.

Description

technical field [0001] The invention relates to a sensing device and a working method thereof, in particular to a working method of a low-cost distributed sensing device based on a W-type optical fiber. Background technique [0002] Long-distance oil, water or gas pipelines are widely used due to the advantages of high work efficiency, safety, and low cost. However, there is currently no suitable means for monitoring long-distance pipelines. Brillouin scattering transmission based on ordinary optical fibers Sensing devices have the advantage of distributed monitoring of temperature and strain, but their high cost limits their popularization. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a working method of a low-cost distributed sensing device based on W-type optical fiber. The low-cost distributed sensing device based on the W-shaped optical fiber is convenient to use,...

AI Technical Summary

Problems solved by technology

[0002] Long-distance oil, water or gas pipelines are widely used due to the advantages of high work efficiency, safety, and low cost. However, there is currently no suitable means for monitoring long-distance pipelines. Brillouin scattering transmission based on ordinary optical fibers Sensing devices have the advantages of distributed monitoring of temperature and strain, but their high cost limits their popularization.

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