Temperature measurements of high-temperature surface in environments with interfering radiation using luminescence lifetime thermometry

IF 2 3区 物理与天体物理 Q3 OPTICS
Yusong Wu, Yuhang Zhang, Tairan Fu
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Abstract

Interfering radiation, such as self-emitting thermal radiation, infrared radiation from heating sources, and combustion gas radiation, significantly impacts the use of optical thermometry. How to improve the precision of temperature measurement in such an environment is a key issue. Therefore, this work aimed to quantitatively analyze the temperature measurement precision of luminescence lifetime thermometry for measuring the temperatures of hot components in environments with interfering radiation. In this paper, based on the quantitative analysis of measurement noise of optical signal and the error propagation theory, we proposed a theoretical model for predicting the temperature measurement precision of luminescence lifetime thermometry. Using blue LED as the interfering radiation source, the temperature measurement experiments of high-temperature surfaces under different interfering radiation intensities were carried out. By comparing the measured precision based on the standard deviation of repeated experiments with the predicted precision of the theoretical model proposed in this paper, the reliability of this theoretical model was verified. The experiments also revealed that the temperature measurement precision was linearly related to the square root of the measured signal intensity (i.e., the sum of luminescence signal and interfering radiation signal). With the increase of the background interfering radiation intensity, although the accuracy of temperature measurement did not change significantly, the measurement noise increases, resulting in a significant increase in random error of measured temperature. This work provides guidance for developing luminescence lifetime thermometers and their applications in environments with interfering radiation.

Abstract Image

利用发光寿命温度测量法测量有干扰辐射环境中高温表面的温度
自发光热辐射、加热源红外辐射和燃烧气体辐射等干扰辐射严重影响了光学温度测量的使用。如何提高在这种环境下的温度测量精度是一个关键问题。因此,这项工作旨在定量分析发光寿命测温法在干扰辐射环境中测量高温部件温度的测温精度。本文基于对光信号测量噪声的定量分析和误差传播理论,提出了预测发光寿命测温法温度测量精度的理论模型。以蓝色 LED 为干扰辐射源,进行了不同干扰辐射强度下高温表面的温度测量实验。通过比较基于重复实验标准偏差的测量精度和本文提出的理论模型的预测精度,验证了该理论模型的可靠性。实验还表明,温度测量精度与测量信号强度(即发光信号与干扰辐射信号之和)的平方根呈线性关系。随着本底干扰辐射强度的增加,虽然温度测量精度没有明显变化,但测量噪声增大,导致测量温度的随机误差显著增加。这项工作为开发发光寿命温度计及其在干扰辐射环境中的应用提供了指导。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Applied Physics B
Applied Physics B 物理-光学
CiteScore
4.00
自引率
4.80%
发文量
202
审稿时长
3.0 months
期刊介绍: Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.
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