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Device and method for measuring multi-FBG (fiber bragg grating) colorimetric transient temperature

A fiber grating and transient temperature technology, applied in measuring devices, measuring heat, thermometers, etc., can solve problems such as the inability to independently select three bands, and achieve the effects of short data processing time, fast response speed, and fast computing speed

Inactive Publication Date: 2012-09-26
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Since the band response of the three color channels of the general RGB color filter array is designed based on the spectral tristimulus value of the standard human eye, its spectral response characteristics are fixed, and it is impossible to independently select the appropriate three bands to achieve optimal measurement

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  • Device and method for measuring multi-FBG (fiber bragg grating) colorimetric transient temperature
  • Device and method for measuring multi-FBG (fiber bragg grating) colorimetric transient temperature
  • Device and method for measuring multi-FBG (fiber bragg grating) colorimetric transient temperature

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Embodiment Construction

[0038] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] see figure 1 , a multi-FBG fiber grating colorimetric transient temperature measurement device, including a high-temperature optical lens 2, a transmission fiber 3 and a high-speed floating-point DSP processor 9 arranged in a control room 4, three Ys connected in series on the transmission fiber 3 Type beam splitter 5, and the FBG fiber grating 6 directly fused on each Y type beam splitter 5, and the detector 7 corresponding to the Y type beam splitter 5 and the signal conditioning circuit 8 corresponding to the detector 7 .

[0040]The high-temperature optical mirror 2 is used to pick up thermal radiation infrared light from the surface of the high-temperature ob...

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Abstract

The invention discloses a temperature measuring method, comprising the following steps: (1) a high temperature optical lens picking up infrared radiation lights on a surface of a high temperature object, (2) transferring the infrared radiation lights to a control room through optical fibers, (3) in the control room inputting the optical fibers into a fiber bragg grating (FBG) optical grating through an input end of an Y type optical splitter, outputting the light reflected by the FBG optical grating through an output end of the Y type optical splitter and outputting to a detector (4), converting light signals reflected by each stage of the FBG optical grating into weak electronic signals by a corresponding avalanche photo diode (APD) infrared detector, inputting the electronic signals after regulated by a signal regulation circuit into an A / D conversion module of a high-speed floating point digital signal processor (DSP), (5) the high-speed floating point DSP performing filtration, colorimetric computation, temperature lookup, temperature fitting to the data of the A / D conversion module, and finally displaying the temperature in a curve manner on a liquid crystal displayer, thus the detection being more accurate and intuitive.

Description

technical field [0001] The invention relates to a measuring device and a measuring method thereof, in particular to a multi-FBG fiber grating colorimetric transient temperature measuring device and a measuring method. Background technique [0002] In the high-temperature test of metallurgical continuous casting crystallization process, continuous casting high-temperature billet surface, metallurgical furnace, artillery launch, aviation and rocket engines, plasma generated by strong laser dissociation atmosphere, etc., the transient temperature (temperature range is 800- 2000 degrees Celsius, the temperature change is 5-10us) is one of the very important parameters, for the study of the temperature field of the crystallization process, the temperature monitoring of iron and steel smelting, the analysis of the temperature field of the billet surface, the temperature monitoring of the gun, the temperature field analysis of the engine, etc. has a very important meaning. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K11/3206
Inventor 邱选兵李传亮魏计林
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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