带通红外比色滤波测温技术研究

Temperature measurement using bandpass infrared colorimetric filter

提出可精确测量中低温物体温度的带通比色滤波测温理论,利用该理论,搭建了相应的实验装置。对装置所用的器件进行精确标定,并利用数值函数对测试得到的离散点数据拟合后,用面源黑体在50℃～400℃范围对该实验装置进行了测温实验验证,实验结果表明,该实验装置在不需知道目标发射率的情况下,能精确测量物体的真实温度,因此,验证了提出理论的正确性与所建立测温系统的可行性,对中低温物体真实温度的测量研究具有重要意义。

The bandpass colorimetric filter temperature measurement theory was presented, which could accurately measure the object at medium-low temperature, meanwhile, a series of experimental facility were built up based on the theory. The facilities used were calibrated ac- curately and the discrete data were fitted by using numerical function, a temperature-measure- ment experiment was done using extended blackbody in the range of 50℃ -400℃. Experiment result implies that the facility can precisely obtain the true temperature of a measured objection without the presence of target launch rate. Therefore, it proves the validity of the theory and the feasibility of the temperature-measurement system matching the theory, which plays a key role in the accurate measurement of the medium-low temperature objects.