Fluorescence temperature measurement method suitable for ultra-wide temperature measurement range

A fluorescence temperature and fluorescence technology, applied in the field of fluorescence temperature measurement, can solve the problems of narrow fluorescence temperature measurement range and low fluorescence temperature measurement temperature.

Pending Publication Date: 2021-09-14
SONGSHAN LAKE MATERIALS LAB +1
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to provide a fluorescent temperature measurement method suitable for an ultra-wide temperature measurement range, so as t

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  • Fluorescence temperature measurement method suitable for ultra-wide temperature measurement range
  • Fluorescence temperature measurement method suitable for ultra-wide temperature measurement range
  • Fluorescence temperature measurement method suitable for ultra-wide temperature measurement range

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preparation example Construction

[0051] In a specific embodiment of the present invention, the Pr 3+ The preparation method of the doped oxide transparent ceramic comprises: taking main raw materials according to stoichiometric ratio, mixing them with auxiliary agents, and then performing calcination, molding and sintering; the main raw materials include carbonates or oxides of metal elements.

[0052] with Pr 3+ Doped Ba(Zr,Mg,Ta)O 3 As an example, the main raw material can be BaCO 3 , ZrO 2 , MgO, Ta 2 o 5 and Pr 6 o 11 .

[0053] In a specific embodiment of the present invention, the mixing method includes: ball milling the mixture of the main raw material and the auxiliary agent under the action of an organic solvent for 12 to 24 hours to obtain a slurry, and then removing the Organic solvents.

[0054] In actual operation, the organic solvent in the ball-milled slurry can be removed by drying, such as drying. Wherein, the drying temperature may be 40-50°C.

[0055] In a specific embodiment of th...

Embodiment 1

[0070] This embodiment provides a fluorescent temperature measurement method suitable for an ultra-wide temperature measurement range, including the following steps:

[0071] (a) Establish a fluorescent temperature sensing material at 624nm ( 3 P 1 → 3 f 2 ) and 649nm ( 3 P 0 → 3 f 2 ) Fluorescence peak intensity ratio FIR(I 624 / I 649 ) standard curve with temperature variation, the excitation wavelength is 447nm;

[0072] (b) placing the fluorescent temperature sensing material in the environment of the temperature to be measured, using 447nm wavelength excitation, measuring the fluorescence spectrum of the fluorescent temperature sensing material, and calculating the corresponding 624nm ( 3 P 1 → 3 f 2 ) and 649nm ( 3 P 0 → 3 f 2 ) Fluorescence peak intensity ratio FIR(I 624 / I 649 ), into the standard curve of step (a), to calculate the measured temperature of the environment to be tested.

[0073] Wherein, the fluorescent temperature sensing material is...

Embodiment 2

[0082] This embodiment refers to the fluorescence temperature measurement method of Embodiment 1, the only difference is that the fluorescent temperature sensing materials are different.

[0083] The fluorescent temperature sensing material of the present embodiment is 0.2% Pr 3+ : Ba(Zr 0.16 Mg 0.28 Ta 0.56 )O 3 , its preparation method refers to the 0.6% Pr of Example 1 3+ : Ba(Zr 0.16 Mg 0.28 Ta 0.56 )O 3 The only difference is that in step (1), BaCO is weighed according to the molar ratio of Ba, Zr, Mg, Ta and Pr as 1:0.16:0.28:0.56:0.002 3 , ZrO 2 , MgO, Ta 2 o 5 and Pr 6 o 11 Powder.

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Abstract

The invention relates to the technical field of fluorescence temperature measurement, in particular to a fluorescence temperature measurement method suitable for an ultra-wide temperature measurement range. The fluorescence temperature measurement method comprises the following steps of: (a) establishing a standard curve of a fluorescence peak intensity ratio of Pr < 3 + >-based 3P1-to-3F2 transition and 3P0-to-3F2 transition of a fluorescence temperature sensing material along with temperature change; and (b) placing the fluorescence temperature sensing material in an environment of which the temperature is to be measured, measuring the fluorescence spectrum of the fluorescence temperature sensing material, calculating the fluorescence peak intensity ratio of Pr < 3 + >-based 3P1-to-3F2 transition and 3P0-to-3F2 transition, substituting the fluorescence peak intensity ratio into the standard curve, and calculating to obtain a temperature measurement value of the to-be-measured environment, the fluorescence temperature sensing material being Pr < 3 + >-doped oxide transparent ceramic, and the molar doping concentration of Pr < 3 + > being 0.1%-10%. According to the temperature measurement method, a higher temperature measurement limit and a wider temperature measurement range can be realized.

Description

technical field [0001] The invention relates to the technical field of fluorescence temperature measurement, in particular to a fluorescence temperature measurement method suitable for an ultra-wide temperature measurement range. Background technique [0002] Temperature is a basic thermodynamic parameter in industrial development and scientific research. Conventional contact temperature sensors require direct heat transfer and heat balance between the object to be measured and the sensor, which means long measurement times and leads to deviations from the actual temperature. As the requirements for the characteristics of temperature sensing equipment are getting higher and higher, for example, for high-voltage electrical equipment, industrial microwave equipment, oil exploration equipment, etc., temperature detection in special environments such as high voltage, strong electromagnetic interference, flammable and explosive Traditional sensing elements that use electrical si...

Claims

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Application Information

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IPC IPC(8): G01K11/20
CPCG01K11/20
Inventor 曹永革文子诚唐巍左传东李英魁
Owner SONGSHAN LAKE MATERIALS LAB
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