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A high-resolution surface temperature field measurement method using film-like flow quantum dots

A surface temperature and high-resolution technology, applied in thermometers, heat measurement, and measuring devices, can solve problems such as low layout density, low frequency response of thermocouples and thermal resistances, and difficulty in further improving spatial resolution, achieving real-time Effects of Measurement, Sensitivity, and Accuracy Improvements

Active Publication Date: 2021-05-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Considering that the frequency response of thermocouples and thermal resistances is low, and the arrangement density on the surface to be measured is mostly low due to the actual situation, it is difficult to further improve the spatial resolution of the traditional temperature field measurement method.

Method used

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  • A high-resolution surface temperature field measurement method using film-like flow quantum dots
  • A high-resolution surface temperature field measurement method using film-like flow quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Real-time measurement of the temperature of the bottom surface when the droplet evaporates naturally:

[0024] (1) if figure 1 As shown, the test piece includes a copper piece 2, a quartz piece 3, an inlet transfer port 6-1, an outlet transfer port 6-2, and a CdTe quantum dot aqueous solution 1 flowing between the copper sheet 2 and the quartz sheet 3. The preparation method of the CdTe quantum dot aqueous solution is as follows: at room temperature, water-soluble CdTe and pure water are mixed at a volume ratio of 1:25, and fully shaken to obtain the CdTe quantum dot aqueous solution 1. The assembly method of the test piece is as follows: connect and fix the two ends of the copper piece 2 and the quartz piece 3 with the inlet transfer port 6-1 and the outlet transfer port 6-2, respectively, and keep a distance of 0.5 mm. Use plexiglass to close the sides to form a cavity; as figure 2 As shown, the test piece is divided into a calibration section A and a me...

Embodiment 2

[0028] Embodiment 2: Real-time measurement of the surface temperature of the chip during operation:

[0029] (1) if figure 1 As shown, the test piece includes a copper sheet 2, a quartz sheet 3, an inlet transfer port 6-1, an outlet transfer port 6-2, and an aqueous CdSe quantum dot solution 1 flowing between the copper sheet 2 and the quartz sheet 3. The preparation method of the CdSe quantum dot aqueous solution is as follows: at room temperature, water-soluble CdSe and pure water are mixed at a volume ratio of 1:30, and fully shaken to obtain the CdSe quantum dot aqueous solution 1. The assembly method of the test piece is as follows: connect and fix the two ends of the copper piece 2 and the quartz piece 3 with the inlet transfer port 6-1 and the outlet transfer port 6-2, respectively, and keep a distance of 1.0 mm. Use plexiglass to close the sides to form a cavity, such as figure 2 As shown, the test piece is divided into a calibration section A and a measurement sect...

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Abstract

The high-resolution surface temperature field measurement method is realized by using film-like flow quantum dots. Firstly, an aqueous solution of quantum dots is prepared and a test piece is made, and a closed loop with a pump body, a calibration section and a measurement section is built and operated. The test piece is calibrated in the calibration section, and the excitation luminescence intensity-temperature calibration curve of the quantum dot aqueous solution can be obtained. The surface to be tested is contacted with the measuring section, and the temperature field and its changes on the surface of the test piece are obtained through high-speed camera shooting, image analysis and inversion calculation. The invention can realize the real-time measurement of the temperature field through the optical method, and has the advantages of high measurement precision, high resolution, fast frequency response and the like.

Description

technical field [0001] The invention relates to the technical field of object surface temperature measurement, in particular to a method for measuring a high-resolution surface temperature field using film-like flow quantum dots. Background technique [0002] The measurement of the surface temperature field has important and extensive applications in the research of microscale heat transfer phenomena, the heat dissipation design of large-scale integrated circuits, and the dynamic measurement of multiphase flow fields. [0003] The general methods of surface temperature field measurement can be divided into contact measurement and non-contact measurement. Most of the contact measurement methods are: using the zeroth law of thermodynamics, a series of temperature sensing elements such as thermal resistors and thermocouples are arranged on the surface to be measured, and the measured data are processed manually or by a computer to sort out the temperature field distribution of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/00
CPCG01K11/006
Inventor 张丹贾金睿王辉辉王珍珍邱斌斌
Owner XI AN JIAOTONG UNIV