环境和介质对测温结果的影响  

Effect of Environment and Medium on Temperature Measurement

作　　者：王子轩[1] 吴坚[1] 戴长建[1] WANG Zi-xuan WU Jian DAI Chang-jian(School of Science, Tianjin University of Technology, Tianjin 300384, Chin)

机构地区：[1]天津理工大学理学院,天津300384

出　　处：《光谱学与光谱分析》2017年第7期2128-2132,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(11174218)资助

摘　　要：建立了一种理论模型和实验方法,可以有效地修正来自于环境和介质对测温结果的影响。这种修正方法通过计入测温环境对辐射体的衰减系数,可以显著改善以灰体辐射为基础的测温技术的精度和普适性。首先,利用多通道CCD图像光谱仪快速准确地获得给定辐射体在空气中的指纹光谱,并将其等效为一个标准的灰体模型;其次,将该辐射体放入未知的环境和介质中,重复测量该辐射体的辐射光谱,并建立包含待测介质对辐射体的衰减特征的灰体模型。最后,通过对比上述两种情况下的灰体模型,便可精确确定该辐射体在该环境和介质下的温度。通过对处于不同环境和介质下的相同辐射体的系统实验,检验了该测温技术和修正方法的普适性和准确性。An academic model and a kind of experimental method are built in this paper to efficiently revise influence on results from surroundings and medium in thermometry.This revised method,taking into consideration of the attenuation coefficient of the irradiator from its surrounding,can dramatically improve the precision and universality of thermometry technology based on gray-body.First,accurate fingerprint spectrum of the irradiator in given airborne is obtained via using the multichannel CCD image spectrometer,which is made equivalent to a gray-body model at the same time make it.Then,this irradiator is put into an uncharted environment and medium to measure its radiation spectrum repeatedly.Besides,agray-body model which contains attenuation properties from determinand is buit.Finally,this paper precisely conclude the temperature of the irradiator in exact environment and medium by comparing the graybodies in two above situations.The paper tests the universality and veracity of this thermometry technology and revised method via a series experiments about the same kind radiators in different environment and medium.

关 键 词：测温环境 衰减效应 CCD图像光谱 灰体辐射 

分 类 号：TK311[动力工程及工程热物理—热能工程]