Temperature field calibrating device and temperature field calibrating method of distributed optical fiber temperature sensor system

Abstract

The invention discloses a field temperature calibrating device and a field temperature calibrating method of a distributed optical fiber temperature sensor system. Detection optical fiber of the front end of the distributed optical fiber temperature sensor system is placed into a cavity of a transverse cylinder after being coiled according to the natural radius of the distributed optical fiber temperature sensor system, a heat-insulation cover is covered, a heat-insulation ring is arranged outside the cylinder, four thermocouples are distributed at the bottom of the cavity of the cylinder at equal intervals and are respectively connected with a computer, two heating pieces are symmetrically arranged on an internal connection power supply of the cylinder, the outer bottom surface of the cylinder is coated with a layer of matters with specific emissivity, a portable thermal infrared imager is arranged in front of the matters with specific emissivity to measure temperature, and a calibrating process is realized by comparing the measured temperature of the distributed optical fiber temperature sensor system and the measured temperature of the portable thermal infrared imager. The field temperature calibrating device can not destroy a field as not arranged on a temperature measuring field, is small and practical, is not limited by a small-space temperature measuring field, reduces time and frequency for operating and stopping items without interrupting temperature monitoring, reduces operation difficulty and improves work efficiency.

Description

Distributed optical fiber temperature sensor system temperature on-site calibration device and method technical field The invention relates to a temperature calibration device and a calibration method of a distributed optical fiber temperature sensor system, in particular to an on-site temperature calibration device and method of a distributed optical fiber temperature sensor system. Background technique The distributed optical fiber temperature sensor system has developed products at home and abroad and has begun to be used in temperature alarms such as oil depots, tankers, dangerous goods warehouses, cold storages, large cargo ships, and arsenals; temperature distribution measurement of various large and medium-sized transformers and generator sets, Thermal protection and fault diagnosis; thermal detection and monitoring of underground and overhead high-voltage power cables; hot spot detection of piping temperature, heating system pipelines, and oil pipelines in thermal p...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide an on-site temperature calibration device and method for a distributed optical fiber temperature sensor system, which uses the existing theoretical calibration basis and temperature measurement knowledge to solve the calibration problem of distributed optical fiber temperature sensors

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