摘要
建立了一种以灰体辐射为基础测量温度的新方法,它不仅可以测定辐射体的实时温度,而且可以实现无接触和高精度测量。首先,利用多通道CCD图像光谱仪精确测量辐射体在较宽波段内的辐射光谱,作为该辐射体的指纹光谱,将其定义为一个等效的灰体;其次,通过对所测光谱的拟合确定该辐射体的灰体辐射模型的系数,从而确定待测辐射体的灰体辐射模型;最后,通过光谱技术与灰体辐射模型的结合确定给定辐射体的任意温度。通过对无火焰和有火焰这两类热辐射体的实验检验,表明该测温方法具有实时、准确和无接触等优点。
A new method for temperature measurement is established based on the gray-body radiation,which can not only determine the real-time temperature of thermal source,but also conduct non-contacted temperature measurement with high precision.First,a wide-band emission spectrum of the given radiation source is measured precisely with a multi-channel CCD image spectrometer,which is served as its spectral fingerprints for establishing agray-body radiation model;Secondly,the coefficients introduced in the gray-body radiation model are determined by fitting the measured emission spectrum;Finally,a combination of spectroscopic technique and the gray-body radiation model is employed to measure any temperature of the given radiation source.Having tested on both types of radiation sources,with and without a flame,the present work has demonstrated that the imaged spectral approach mentioned above can be utilized as a real-time,high precision and non-contacted technique for temperature measurement.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2016年第1期38-41,共4页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(11174218)资助
关键词
灰体辐射模型
CCD图像光谱
光谱测温技术
能级跃迁
Gray-body radiation model
CCD imaged spectrum
Spectral technique for temperature measurement
Energy level transition
