中文摘要：

为了解决金属防热瓦在连续加热过程中热边温度和发射率的测量问题,在基于辐射测温的参考温度数学模型的连续测量法中采用了一种新的发射率假设模型,并在此基础上提出了多波长数据处理方法.该方法假设材料的光谱发射率在选定的光谱处与温度有近似相同的线性关系,通过处理两个不同温度点处的多光谱测量数据以得到防热瓦真温及光谱发射率.使用多波长高速高温计测量了某种防热瓦在900～1300℃的温度范围内的辐射,并进行了数据处理.实验结果表明,只要温度估计初值与真实情况的误差在±200℃以内,即可得到较好的计算温度值和计算发射率值,测量不确定度在2%以内,说明此方法是测量金属防热瓦表面温度及发射率的可行方法.

英文摘要：

Based on the reference temperature model of multi-spectral thermometry, a kind of data processing method was introduced to solve the measurement problem of the metallic thermal protection blanket hot side temperature and emissivity in continuously heating course. A new emissivity assumption was presented in this paper. Based on the new assumption, a new data processing method of the multispectral radiation thermometer was introduced. The method was to assume that the temperature and emissivity had approximate identical linear relation in the spectrum. By processing the measured data of the multispectral pyrometer at two different times, the true temperature and spectral emissivity could be simultaneously calculated. The radiation of the metallic thermal protection blanket at 900～1300℃ was measured by using a multispectral pyrometer. The results show that so long as the difference between the initial temperature value and the measured target temperature is within ±200℃, the calculated values of the true temperature and spectral emissivity are in good agreement with that of the measured targets. The total uncertainty is less than 2%. The above-mentioned method is a practical method for the metallic thermal protection blanket temperature and emissivity measurement.