Fiber Bragg Grating Array Sensing Temperature Measurement Device and Temperature Measurement Method Based on Labview

Abstract

The present invention relates to a fiber grating array sensing temperature measuring device and its temperature measuring method based on the labview platform, which is composed of a host computer sensing temperature measuring system and an external temperature measuring device, and the host computer sensing temperature measuring system includes a control interface module , a function display module, a threshold alarm module and an automatic data storage module; the external temperature measuring device includes a light source, a fiber grating array, a circulator, and a volume grating demodulation module. The device can realize temperature collection and real-time monitoring under flammable and explosive extreme conditions such as crude oil storage tanks, internal systems of large-scale power transmission substation switch cabinets, and forest fire warnings, temperature alarms under different threshold conditions, data output, and switchable storage modes. Data storage, grating parameter setting, dynamic display of temperature measurement point-temperature curve and other functions. The device can accurately demodulate the temperature value of the grating, and can realize temperature measurement in the temperature range of 0-300°C.

Description

technical field [0001] The invention relates to an optical fiber temperature measuring device, in particular to a fiber grating array sensing temperature measuring device and a temperature measuring method based on a labview platform. Background technique [0002] The fiber grating sensing system has advantages that traditional electrical sensors do not have, such as high sensitivity, anti-electromagnetic interference, corrosion resistance, and good insulation. In production and life, the temperature monitoring of crude oil storage tanks, the temperature detection inside the switchgear of large-scale power transmission substations and the early warning of forest fires, etc., the working environment has strict requirements on the temperature monitoring system, and the monitoring system needs to run 24 hours a day. High, the fiber grating temperature sensor has high demodulation accuracy, and its small size, no electricity and other advantages meet the actual needs, and has a ...

AI Technical Summary

Problems solved by technology

But they are bulky and not suitable for flammable and explosive environments. In addition, infrared temperature guns can only collect temperature at a certain moment, and cannot realize real-time collection of temperature data

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