计量学报2024，Vol.45Issue(4)：514-519,6.DOI:10.3969/j.issn.1000-1158.2024.04.08
基于主动式激光辐射测温技术的黑体腔底真实温度测量研究
Measurement of the True Temperature at the Bottom of a Blackbody Cavity Based on Active Laser Radiation Thermometry
摘要
Abstract
The true temperature and uniformity of the blackbody cavity bottom are the key factors affecting the evaluation of the cavity emissivity,but the existing studies for the temperature uniformity characterization are mostly based on the brightness temperature.An active laser radiation thermometry technique,which is capable of emissivity-free temperature measurement,is applied to carry out a study on the real surface temperature and uniformity measurement of the cavity bottom of a blackbody radiation source in 973 K.Meanwhile,based on the measured temperature field data,the Monte-Carlo method was used to numerically simulate the effective emissivity distribution of the cavity,obtaining the simulation results at typical positions and combining with the bright temperature data to obtain the true temperature field at the bottom of the cavity.And compared with the direct measurement results of the surface real temperature by active laser radiation thermometry,the results show that for the nine selected measurement points,the relative deviations of the two are between 0.04％and 0.77％.The good agreement verifies the feasibility of the active laser radiometric thermometry technique for true temperature measurements at the bottom of the cavity of a blackbody radiation source.关键词
辐射测温/黑体辐射源/温场/红外激光/蒙特卡洛法Key words
radiation thermometry/blackbody radiation source/temperature field/infrared laser/Monte-Carlo method分类
通用工业技术引用本文复制引用
王鑫宇,安保林,章欣达,董伟,闫全英,赵云龙,翟慧星..基于主动式激光辐射测温技术的黑体腔底真实温度测量研究[J].计量学报,2024,45(4):514-519,6.基金项目
国家重点研发计划(2022YFF0610804) （2022YFF0610804）
财政部公益性科研项目(AKYZZ2105) （AKYZZ2105）
