一种改进的比色测温方法研究  

An Improved Colorimetric Temperature Measurement Method

作　　者：徐宝昌[1] 张丁元[1] 

机构地区：[1]中国石油大学(北京)自动化系,北京102249

出　　处：《光电工程》2011年第4期1-6,共6页Opto-Electronic Engineering

基　　金：国家863计划项目(2006AA06A103);国家自然科学基金(20976193)

摘　　要：为了提高基于CCD图像测温的准确性,针对波长的选取对温度计算结果产生的较大影响,提出了一种不依赖于CCD光谱特性及其三基色代表性波长的改进比色测温方法。利用三基色中两两基色与温度的关系得到三个温度解,最后利用三个温度解之间的相关性进行优化,得出最优温度解。改进方法不仅避免了由于选取波长带来的测温误差,而且得到的计算值更加接近真实值。实验结果表明,改进的比色算法较传统方法的测温误差减少了1.16%,提高了比色测温法的准确性和实用性。To improve the accuracy of temperature measurement using CCD image,for the selection of the wavelength impacts the result of the temperature measurement greatly,an improved colorimetric temperature measurement method is proposed,which is independent of the spectroscopic characteristics and the representative wavelengths of the CCD.Using the relationship between color and temperature,three solutions of temperature are obtained,and the temperature value based on the correlation of those temperatures is optimized.Then the optimum temperature is obtained.The improved method not only avoids the measurement errors caused by the wavelength selection,but also makes the calculated values closer to the true value.The experimental results show that,compared with the traditional method,the measurement error of the improved colorimetric temperature measurement method is decreased by 1.16%,and the accuracy and practicality of colorimetric temperature measurement are improved.

关 键 词：比色法 温度测量 图像处理 

分 类 号：TN201[电子电信—物理电子学]