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Preparation device and method of intelligent hydrogel optical fiber sensor and sensor

A technology of optical fiber sensor and preparation device, which is applied in the measurement of the change force of the optical properties of the material when it is stressed, and can solve the problem of adhesion failure between the smart hydrogel and the surface of the sensing fiber, and the detection of the smart hydrogel fiber optic sensor. Data inaccuracy, stratification, etc., to achieve reliable repeatable measurement, good repeatable response, and low cost

Active Publication Date: 2022-07-29
威海长和光导科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual use process, when the smart hydrogel senses external changes, its volume shrinks or swells repeatedly, and the surface adhesion between the smart hydrogel and the sensing optical fiber is prone to failure, and delamination occurs, which eventually leads to the failure of the smart hydrogel. The detection data of the gel fiber optic sensor is inaccurate

Method used

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  • Preparation device and method of intelligent hydrogel optical fiber sensor and sensor
  • Preparation device and method of intelligent hydrogel optical fiber sensor and sensor
  • Preparation device and method of intelligent hydrogel optical fiber sensor and sensor

Examples

Experimental program
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Embodiment 1

[0036] Depend on figure 1 , Figure 7As shown, the present invention provides a preparation device for an intelligent hydrogel optical fiber sensor, which is provided with a worktable 6, and a forming mold 7 is installed on the worktable 6, and the forming mold 7 is used for forming the intelligent hydrogel optical fiber sensor. There is an optical fiber clamp 8 on both sides of the forming mold 7, and the optical fiber clamp 8 is used as an optical fiber fixing clamp for clamping the sensing optical fiber 3 on both sides of the forming mold 7, so that the optical fiber clamp 8 between the two optical fiber clamps 8 is used. The sensing fiber 3 is always in a straight state. Depend on image 3 , Figure 7 As shown, the forming mold 7 is a box-shaped structure with an open top, and the forming mold 7 is provided with a cuboid inner cavity 9, and the cuboid inner cavity 9 is sequentially provided with connected PDMS elastomer layer filling cavity 91, PDMS sponge from top to b...

Embodiment 2

[0044] A preparation device for a smart hydrogel optical fiber sensor as described in Example 1, in order to improve the appearance quality and reduce the number of surface burrs, such as Figure 4 to Figure 6 As shown, the forming die 7 is also provided with a strip baffle 12, the strip baffle 12 is adapted to be detachably inserted into the U-shaped groove 10, and the bottom surface of the strip baffle 12 is provided with a semicircular opening downward. The groove 13, the groove bottom 101 of the U-shaped groove 10 is a semi-circular structure, and the semi-circular groove 13 cooperates with the groove bottom 101 of the U-shaped groove 10 to form a circular through-hole matching the cross section of the sensing fiber 3. hole 14.

[0045] Before preparing the smart hydrogel optical fiber sensor, insert the strip baffle 12 into the gap between the side walls of the U-shaped groove 10, and pull out the strip baffle 12 from the U-shaped groove 10 when removing the film. .

Embodiment 3

[0047] A preparation device for a smart hydrogel optical fiber sensor as described in Example 1, another structure of the forming mold 7 is as follows: Image 6 As shown in the figure, two through-holes 11 are respectively provided on the two opposite box walls of the forming die 7, which can only accommodate the sensing optical fiber 3 to pass through, and the two through-holes 11 are arranged on the box wall where the PDMS elastomer layer filling cavity 91 is located, And the two through holes 11 are arranged horizontally facing each other. The forming mold 7 is suitable for the sensing fiber 3 without any device installed at one end. The end of the sensing fiber 3 without the device is passed through the two through holes 11 of the forming mold 7 successively, and finally the sensing fiber 3 is placed horizontally on the On the two through holes 11, and the sensing area 31 of the sensing fiber 3 is set in the PDMS elastomer layer filling cavity 91, and finally the fiber cla...

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Abstract

The invention provides a preparation device and method of an intelligent hydrogel optical fiber sensor and the sensor, and solves the technical problems that an existing intelligent hydrogel optical fiber sensor is liable to cause surface adhesion failure of intelligent hydrogel and a sensing optical fiber and layering occurs. The preparation device is provided with a workbench, a forming mold is installed on the workbench, and the two sides of the forming mold are each provided with an optical fiber clamp; the forming mold is of a box-shaped structure with an opening in the upper portion, a cuboid inner cavity is formed in the forming mold, and a PDMS elastomer layer filling cavity and a PDMS sponge layer filling cavity which communicate with each other are sequentially formed in the cuboid inner cavity from top to bottom. A U-shaped groove only allowing the sensing optical fiber to pass through is formed in each of two opposite box walls of the forming mold, and the bottoms of the two U-shaped grooves extend downwards to be communicated with the PDMS elastomer layer filling cavity; the invention further discloses a preparation method of the preparation device and the intelligent hydrogel optical fiber sensor, and the preparation method and the intelligent hydrogel optical fiber sensor can be widely applied to the technical field of optical fiber sensing.

Description

technical field [0001] The present application relates to the technical field of optical fiber sensing, and in particular, to a preparation device, method and sensor of a smart hydrogel optical fiber sensor. Background technique [0002] A hydrogel is a polymer with hydrophilic groups that can swell in water to form a three-dimensional network structure and retain a large amount of water. Smart hydrogels are materials that can sense changes in physical quantities such as humidity, pH, stress, and temperature in the external environment, and have reversible responses to external stimuli. When sensing changes, the volume of the smart hydrogel changes significantly, shrinks or swells, and its unique solid-liquid forms transform each other, making the smart hydrogel have functional characteristics such as permeability, swelling, and mechanical properties. Due to the reversible responsiveness of these materials to external stimuli, they are widely used in high-tech fields such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/24
CPCG01L1/242
Inventor 陈卫东王传杰张鹏马飞云张桂林张明立
Owner 威海长和光导科技有限公司