Preparation method of fiber bragg grating temperature sensor with star sensitive lens structure

Abstract

The invention discloses a preparation method of a fiber bragg grating temperature sensor with a star sensitive lens structure. The preparation method of the fiber bragg grating temperature sensor withthe star sensitive lens structure is characterized in that the preparation method of the fiber bragg grating temperature sensor with the star sensitive lens structure comprises the following steps that (1) before the fiber bragg grating temperature sensor is packaged, mechanical simulation analysis is carried out on the fiber bragg grating temperature sensor; (2) strain measurement is carried outon the fiber bragg grating temperature sensor; (3) the fiber bragg grating temperature sensor is packaged; and (4) the fiber bragg grating temperature sensor is calibrated. The environmental requirements of spacecraft operation can be met, and the purpose of measurement is achieved. The temperature measurement is realized by adopting a novel packaging form. The multi-point temperature measurementfunction of a single sensor is realized, and a grid area is arc-shaped and hung on a substrate, so that the strain influence caused by deformation of the substrate is greatly reduced, and the temperature measurement is more accurate.

Description

technical field [0001] The invention belongs to the field of optical fiber sensors, and in particular relates to a method for preparing an optical fiber grating temperature sensor with a star-sensitive lens structure. Background technique [0002] With the rapid development of my country's aerospace industry, the monitoring of spacecraft performance parameters is becoming more and more important. Among them, temperature is a physical quantity indicating the degree of coldness and heat of an object, which has an important impact on the working life, working accuracy, and working performance of the spacecraft. Traditional electronic temperature measurement methods include thermocouple temperature measurement, thermistor temperature measurement, etc., but traditional temperature measurement methods have disadvantages such as poor anti-electromagnetic performance, large volume, heavy weight, and difficulty in networking and reuse. Compared with traditional electronic temperatur...

AI Technical Summary

Problems solved by technology

For the fiber grating sensor layout and temperature monitoring of the optical main lens structure of the satellite star-sensitive sensor, the existing packaged sensor cannot fully fit the arc structure of the measured part of the lens, thus affecting the accuracy of temperature measurement

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