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THz echo high-temperature temperature measurement method

A temperature measurement and high temperature technology, applied in the field of temperature measurement, can solve the problem of low temperature detection accuracy of high temperature objects, and achieve the effect of strong penetration

Active Publication Date: 2021-06-18
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The THz echo high-temperature temperature measurement method provided by the invention solves the technical problem of low detection accuracy of the temperature of high-temperature objects in the existing non-contact temperature measurement device in complex and harsh environments

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Experimental program
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Effect test

Embodiment 1

[0057] The THz echo high-temperature temperature measurement method provided in Embodiment 1 of the present invention includes:

[0058] Step S101, generating a THz source signal and a THz reference signal of a specified THz frequency, wherein the THz source signal is used to transmit and focus on the measured high-temperature object through the THz wave acquisition optical lens;

[0059] Step S102, detecting the THz echo of the THz source signal reflected by the high-temperature object to be measured;

[0060] Step S103, measuring the distance between the measured high-temperature object and the THz echo high-temperature temperature measuring device;

[0061] Step S104, obtaining the temperature value of the measured high-temperature object according to the THz reference signal, the THz echo and the distance.

[0062] The THz echo high-temperature temperature measurement method provided by the present invention includes generating a THz source signal and a THz reference sign...

Embodiment 2

[0064] Such as figure 1 As shown, the THz echo high-temperature temperature measurement method provided by Embodiment 2 of the present invention includes:

[0065] S0: THz wave temperature measurement spectrum segment is determined. That is, according to the environment where the high-temperature object to be measured is located, determine the THz wave spectrum segment T that is sensitive to the temperature measurement of the high-temperature object U0 to be measured s , this example sets T s = 1.3 THz.

[0066] S1: THz reference signal time-domain spectrum, THz echo signal time-domain spectrum and distance information collection between the measured high-temperature object and the THz echo high-temperature temperature measuring device. This function requires the participation of three functional modules, which are the THz reference signal time-domain spectrum function module U11 generated by the THz quantum cascade laser (QCL), and the THz echo signal time-domain spectrum ...

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Abstract

The invention discloses a THz echo high-temperature temperature measurement method, which comprises the following steps that a THz source signal and a THz reference signal with specified THz frequency are generated, the THz source signal is transmitted through the THz wave acquisition optical lens and focused on the measured high temperature object, theTHz echo reflected by a high-temperature object to be measured by the THz source signal is detected, the distance between the measured high-temperature object and the THz echo high-temperature temperature measurement device is measured, and the temperature value of the measured high-temperature object is obtained according to the THz reference signal, the THz echo and the distance, so that the technical problem that the existing non-contact temperature measurement device is low in temperature detection precision of the high-temperature object in a complex and severe environment is solved; the characteristic of high penetrability of terahertz waves is ingeniously utilized, terahertz signals can be received in a complex environment, the temperature of a measured high-temperature source can be accurately measured, meanwhile, the non-contact characteristic is achieved, and the method has important significance on temperature measurement of a high-temperature object in the complex environment.

Description

technical field [0001] The invention mainly relates to the technical field of temperature measurement, in particular to a THz (TeraHertz) echo high-temperature temperature measurement method. Background technique [0002] Terahertz (also known as THz wave, T-ray) usually refers to electromagnetic radiation with a frequency in the range of 0.1-10THz, which is located between microwave and infrared on the electromagnetic spectrum. The THz frequency band is the last electromagnetic radiation region that is of great scientific value but has not been fully understood and utilized. For many years, due to the lack of practical THz wave generation methods and detection methods, people know little about the characteristics of the THz band, so that this band is called the "THz gap" in the electromagnetic spectrum. The frequency range of THz waves is in the electronic The intersection of science and photonics. In the long-wave direction, it overlaps with millimeter waves; in the shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01S17/08
CPCG01J5/00G01S17/08
Inventor 陈致蓬阳春华桂卫华
Owner CENT SOUTH UNIV