Distributed optical-fiber monitoring method and device of structure cracks

A distributed optical fiber and monitoring device technology, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as the inability to intelligently find and control seams, and the existence of detection blind spots, so as to improve monitoring accuracy, avoid unsafe accidents, The effect of overcoming detection blind spots

Active Publication Date: 2020-01-03
THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a distributed optical fiber monitoring method and device for structural cracks, which solves the problem of inability to intelligently search for and control cracks and the existence of detection blind spots when performing crack detection in the prior art

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  • Distributed optical-fiber monitoring method and device of structure cracks
  • Distributed optical-fiber monitoring method and device of structure cracks
  • Distributed optical-fiber monitoring method and device of structure cracks

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Embodiment Construction

[0033] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Such as figure 1 As shown, the present invention provides a distributed optical fiber monitoring device for structural cracks, including a distributed sensing optical cable 101 , a distributed optical fiber demodulator 102 , a monitoring host 103 , and a data center 104 .

[0035] The distributed sensing optical cable 101 is installed on the surface or inside of the structure. Taking the main beam as an example, it can be installed at the bottom of the beam and installed along the longitudinal direction.

[0036] The distributed optical fiber demodulator 102 is installed near the structure, connected with the distributed sensing optical cable 101, and collects characteristic data on the surface or inside of the structure at a fixed period (one day, one month ...

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Abstract

The invention relates to the technical field of optical-fiber sensing, and provides a distributed optical-fiber monitoring method and device of structure cracks. The device includes a distributed sensing optical cable, a distributed optical-fiber demodulator, a monitoring host and a data center. The distributed sensing optical cable is installed at a surface or an inside of a structure body. The distributed optical-fiber demodulator is installed near the structure body, is connected with the distributed sensing optical cable, collects feature data of the surface or the inside of the structurebody, and transmits the same to the monitoring host. The monitoring host processes the feature data, and then carries out assigned distribution. The data center manages the entire device, and controlsa customer terminal according to data after reprocessing. The problem that when crack detection is carried out by the prior art, intelligent seam finding and seam control cannot be carried out, and blind areas of detection exist are solved, then the structure cracks can be effectively identified, and the problem of the blind areas of detection is overcome.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, and mainly relates to a distributed optical fiber monitoring method and device for structural cracks. Background technique [0002] With the increase of the service life, cracks may appear on the surface and inside of highway structures such as bridges, tunnels, and slopes, and the reinforced concrete protective layer will fall off, the steel bars will be exposed, and the cracks will be damaged. However, the growth and deterioration of cracks in the structure due to overloading and overloading of the vehicle will cause stress redistribution in the structure, forming a mechanical discontinuity inside the structure, destroying the integrity of the structure, directly endangering the stability of the structure, and even causing structural failure or even structural failure in severe cases. The overall collapse has seriously affected the operational safety of the traffic project and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G01D21/02
CPCG01B11/16G01D21/02
Inventor 郑欢葛辉良
Owner THE 715TH RES INST OF CHINA SHIPBUILDING IND CORP
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