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A fully metallized low temperature resistant fiber grating temperature sensor and its packaging method

A technology of temperature sensor and optical fiber grating, applied in the field of low temperature resistant sensor, can solve problems such as being easily affected by ambient temperature, creep of packaging materials, aging, etc.

Active Publication Date: 2019-04-30
BEIJING INFORMATION SCI & TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, the packaging material used in the existing packaging method cannot work in an ultra-low temperature environment, and is easily affected by the ambient temperature, resulting in creep and aging of the packaging material

Method used

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  • A fully metallized low temperature resistant fiber grating temperature sensor and its packaging method
  • A fully metallized low temperature resistant fiber grating temperature sensor and its packaging method
  • A fully metallized low temperature resistant fiber grating temperature sensor and its packaging method

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Embodiment Construction

[0028] The objects and functions of the present invention and methods for achieving the objects and functions will be clarified by referring to the exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The essence of the description is only to help those skilled in the relevant art comprehensively understand the specific details of the present invention.

[0029] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0030] figure 1 A schematic flow chart showing a packaging method of a full metallized low temperature resistant fiber grating temperature sensor of the present invention is shown. Such as figure 1 as shown,

[0031] A method for encapsulating an all-metallized low temperature resistant...

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Abstract

The present invention provides a method for packaging a fully metallized low temperature resistant fiber grating temperature sensor, which includes the following steps: S110, start the heating platform, and set the temperature of the platform to a threshold range; S120, place the special fiber grating In the thin metal rod with grooves, place the two on the heating platform described in step S110 and heat; S130, apply a certain tensile stress to both ends of the fiber grating in step S120; S140, put the metal alloy Filling the groove in step S120, using ultrasonic heating to effectively combine the metal alloy, optical fiber grating, and thin metal rod with the groove; S150, closing the heating platform, making the The heating platform is naturally cooled; S160, cut off the excess tail tag at one end of the fiber grating, coat the thin metal rod with grooves obtained in step S150 with thermal conductive silicone grease and fix it in a metal tube to obtain full metallization Low temperature resistant fiber grating temperature sensor.

Description

technical field [0001] The invention relates to the field of low temperature resistant sensors, in particular to a full metallized low temperature resistant optical fiber grating temperature sensor and a packaging method thereof. Background technique [0002] Usually, the optical fiber sensor is a device that uses optical fiber as the medium to detect changes in the light transmission characteristics due to changes in the environment (physical quantities, chemical quantities, or biomass, etc.) of all or part of the optical fiber when light propagates in the optical fiber. Optical fiber sensors are widely used in various industries due to their small size, light weight, high precision and sensitivity, anti-electromagnetic interference, anti-radiation, corrosion resistance, fire prevention, explosion protection, and long life. [0003] The fiber grating sensor is a kind of fiber optic sensor, which belongs to the wavelength modulation fiber optic sensor. Fiber Bragg grating s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32G01K11/3206
CPCG01K11/32
Inventor 祝连庆张荫民董明利娄小平庄炜何巍闫光
Owner BEIJING INFORMATION SCI & TECH UNIV