Bare fiber grating sensor packaging structure and packaging method

A grating sensor, fiber grating technology, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve the problems affecting the test accuracy, non-uniform fiber grating sensor, etc., achieve good repeatability and consistency, and improve bonding reliability , good adhesion effect

Pending Publication Date: 2021-12-24
重庆万桥交通科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a bare fiber grating sensor packaging structure and packaging method for the uneven thickness of the adhesiv

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  • Bare fiber grating sensor packaging structure and packaging method
  • Bare fiber grating sensor packaging structure and packaging method
  • Bare fiber grating sensor packaging structure and packaging method

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[0046] In order to make the above objects, features, and advantages of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the invention. However, the present invention can be implemented in many other fails there are many other means described herein, and those skilled in the art can do so similar improvements without departing from the connotation of the present invention, the invention is not limited by the specific embodiments disclosed below.

[0047] It should be noted that when the element is referred to as "fixed to" another element, it can be directly in another element or may exist in the hidden element. When an element is considered to be "connected" another element, it can be directly connected to another element or may exist at the same time. The term "vertical", "horizontal", "horizont...

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Abstract

The invention discloses a bare fiber grating sensor packaging structure and packaging method. The packaging structure comprises a base body, a fiber grating, an isolation cover and a bonding layer. A coating layer at the bonding part of the fiber grating is stripped, and the fiber grating is fixed on the base body after being pre-tensioned; the isolation cover is fixed on the base body and shields and covers the grating region of the fiber grating; and the bonding layer is bonded on the base body, the bonding layer wraps the stripped part of the fiber grating and the isolation cover, and the isolation cover isolates the grating region of the fiber grating from the bonding layer. According to the bare fiber grating sensor packaging structure and the packaging method, the chirp phenomenon is avoided, and the bare fiber grating sensor packaging structure and the packaging method are suitable for large strain measurement. The sensor is good in durability, stability, linearity, repeatability and consistency; the adhesion between an adhesive and a fiber core is reliable, and the sensor is particularly suitable for strain measurement by pasting the bare fiber grating on a slender component only bearing the action of axial force.

Description

technical field [0001] The invention relates to the technical field of intelligent cables, in particular to a package structure and a package method of a bare fiber grating sensor. Background technique [0002] Stay cables, main cables and suspenders are the main stress-bearing components of cable-bearing bridge structures. They are under high-stress cyclic fatigue loads for a long time. Their cross-sectional dimensions are small and they are very sensitive to corrosion. Once there is disease and deterioration due to the lack of durability and safety of the stay cables or slings, the loss of the bridge's bearing capacity will lead to a vicious accident of collapse, resulting in bad social impact and huge economic losses. In order to ensure the safe operation of the bridge, it is necessary to carry out preventive maintenance and safety inspection on the stay cables, main cables and suspension cables of the cable-bearing bridge. [0003] Smart cable technology is a new techno...

Claims

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Application Information

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IPC IPC(8): G01B11/16
CPCG01B11/165
Inventor 严琨张恒陈学兵李琦杨超华
Owner 重庆万桥交通科技发展有限公司
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