Packaging method of fiber Bragg grating strain sensor

A strain sensor, fiber optic Bragg technology, applied in the direction of optical devices, instruments, measuring devices, etc., can solve the problem of non-sensitive key structural strain measurement without effective measurement methods, and achieve the effect of effective, reliable and accurate testing means

Inactive Publication Date: 2019-05-03
BEIJING INFORMATION SCI & TECH UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] At present, some substantial progress has been made in the aircraft load test, but there is no effective measurement method for the strain measurement of some non-sensitive key structures on the aircraft structure

Method used

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  • Packaging method of fiber Bragg grating strain sensor
  • Packaging method of fiber Bragg grating strain sensor
  • Packaging method of fiber Bragg grating strain sensor

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0025] Such as Figure 1-4 Shown, a kind of optical fiber Bragg grating strain sensor, comprises the following steps: 1) before packing of grating optical fiber strain sensor, carry out mechanical simulation analysis to described grating optical fiber strain sensor;

[0026] Such as figure 1 The structure of the fiber grating strain sensor is shown. Such as image 3 As shown, the mechanical simulation analysis, the steps are as follows, 11 use the finite element analysis method to mesh the sensor; 12 simulate the tensile test loading process to fix one end of the sensor substrate, and apply tension to the other end to stretch, so as to simulate the current The force state of the sensor when the surface of the measured object attached to the sensor is stretched.

[0027] A finite element analysis is perfor...

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Abstract

The invention belongs to the optical fiber sensor measurement field and discloses the packaging method of a fiber Bragg grating strain sensor. The method comprises the following steps of 1) carrying out mechanical simulation analysis on the grating fiber strain sensor before the grating fiber strain sensor is packaged; 2) packaging the grating fiber strain sensor; and 3) calibrating the grating fiber strain sensor. An environment temperature can be accurately measured, the strain sensor is calibrated in a laboratory environment and sensor tensile compression performance is tested. A substrate-type packaging method is adopted to effectively transmit strain and strain measurement is realized.

Description

technical field [0001] The invention belongs to the field of fiber grating sensor measurement, and in particular relates to a packaging method for a fiber Bragg grating strain sensor. Background technique [0002] The development of the aviation industry and the increase in the difficulty of aircraft missions have made the conditions of use and the environment of aircraft more and more complex. The "certainty threshold" based on historical experience to cover the influence of various random factors is not comprehensive. Reasonable aircraft load parameter testing is crucial to ensuring flight safety, and is of great significance for determining structural design, life extension and other aspects. [0003] In the field of material properties and structural mechanical properties, strain measurement is the most important test index. The electrical measurement method has been widely used in the force testing of the structure of the aircraft wing, but the problems brought about ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
Inventor 孟凡勇闫光朱家林
Owner BEIJING INFORMATION SCI & TECH UNIV
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