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Spectral extreme temp. measuring method

An extreme value and spectral technology, applied in the field of temperature measurement, can solve the problems of narrow measurement range and low measurement accuracy

Inactive Publication Date: 2007-07-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a spectral extreme value temperature measurement method in order to solve the problems of low measurement accuracy and narrow measurement range of the current method for measuring object temperature

Method used

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  • Spectral extreme temp. measuring method

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specific Embodiment approach 1

[0027] Specific embodiment one: the steps of the present embodiment method are as follows: the infrared radiation ray 2 of measured object 1 enters Fourier analysis spectrometer 4 through condenser lens 3, and Fourier transform spectrometer 4 carries out spectral scanning, and spectral curve records and deposits computer 5, and computer 5 The temperature of the measured object 1 is directly calculated through the peak wavelength of the spectral curve according to Wien's displacement law, and finally the temperature of the measured object 1 is displayed on the display screen 6 .

specific Embodiment approach 2

[0028] Embodiment 2: In this embodiment, the condenser lens 3 is a convex lens. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Embodiment 3: In this embodiment, the Fourier analytical spectrometer 4 is a Fourier extra-fiber analytical spectrometer. Others are the same as in the first embodiment.

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Abstract

The invention relates to spectrum extreme value temperature detecting method. It includes the4 following steps: infrared radiation ray of the object is collected by the condenser lens into Fourier analysis spectrograph; scanning, recording spectrograph curve, and storing the spectrum into computer; calculating out the object temperature by Wien's displacement law according to the peak value wavelength of the spectrum curve; displaying on the display screen. The range of the measuring temperature is 300-3000k. The invention has the advantages of high measuring precision, wide measuring range.

Description

technical field [0001] The invention relates to a temperature measuring method. Background technique [0002] Temperature is one of the most important parameters to determine the state of matter, and its measurement and control play a very important role in scientific experiments and industrial and agricultural production. In particular, high temperature measurement occupies a very important position in the fields of aerospace, materials, energy, and metallurgy. [0003] Temperature measurement methods can be roughly divided into two types: contact method and non-contact method. In the contact temperature measurement method, thermocouples and thermal resistance thermometers are the most widely used. The advantage of this method is that the equipment and operation are simple, and the real temperature of the object is measured. The disadvantage is that the dynamic characteristics are poor. , so it has an influence on the temperature distribution of the measured object, and i...

Claims

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Application Information

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IPC IPC(8): G01J5/00G01J5/46G01J3/28
Inventor 戴景民齐宏刘晓东谈和平
Owner HARBIN INST OF TECH
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