A fluorescence imaging and ratio-based temperature measurement system and method in a microwave field

By using a fluorescence imaging and ratio thermometry system in a microwave field, and separating fluorescence using an integrating sphere module and a fluorescence spectrophotometry module, high-resolution and high-precision non-contact temperature measurement is achieved. This solves the problems of large temperature measurement error and low resolution in traditional methods, and the system has good compatibility.

CN116659695BActive Publication Date: 2026-06-30SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG UNIV
Filing Date
2023-04-17
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing microwave field temperature measurement methods cannot simultaneously meet the requirements of high resolution, high sensitivity, and high accuracy. Traditional methods such as thermocouples and optical fibers have problems such as large measurement errors, easy damage, or inability to meet spatial resolution in microwave fields.

Method used

A fluorescence imaging and ratio-based temperature measurement system is adopted. The fluorescence inside the chemical reaction vessel is divided into two paths through the integrating sphere module. One path is used for temperature measurement, and the other path is used to display the temperature distribution. By combining the fluorescence spectrophotometry module and the fluorescence imaging module, non-contact high-performance optical temperature measurement is achieved.

Benefits of technology

It improves the spatial resolution and accuracy of temperature measurement in microwave fields, can intuitively reflect the temperature distribution of samples, and is unaffected by microwaves. The temperature measurement system is small in size, has good compatibility, and offers a variety of phosphors to choose from.

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Abstract

The application provides a temperature measurement system and method based on fluorescence imaging and ratio in a microwave field, adopts a combined mode of fluorescence imaging and fluorescence spectrometry, and divides fluorescence emitted by a chemical reaction container into two paths by an integrating sphere module; first path emergent light enters a fluorescence imaging module, and temperature distribution on a surface of the container is directly reflected by fluorescence imaging; second path emergent light enters a fluorescence spectrometry temperature measurement module, and temperature on the surface of the container is measured according to a characteristic peak of a fluorescent body and a Boltzmann-thermal law. Non-contact optical temperature measurement with high performance is realized, and spatial resolution in a temperature measurement process in the microwave field is improved.
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