基于等效辐射源替代法的辐射温度计校准方法研究
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摘要
针对现有检定规程无法检定发射率固定的辐射温度计的问题,提出一种基于等效辐射源替代法的方案。结合带通辐射温度计的特点,建立辐射温度计测量模型,基于辐射温度计接收光谱有效亮度相等的前提下,结合测量模型得出利用现有有效发射率为0.995的黑体辐射源来等效替代发射率为0.95的辐射源的计算公式,并计算出各个校准点下替代源的理论温度值。
Aiming at the problem that the existing verification procedures can not verify the radiation thermometer with fixed emissivity,a scheme based on the equivalent radiation source replacement method is proposed. Combined with the characteristics of the band-pass radiation thermometer,the radiation thermometer measurement model is established. Based on the premise that the radiation thermometer receives the equal effective brightness of the spectrum,the measurement model is used to obtain the equivalent replacement emissivity using the existing black body radiation source with an effective emissivity of 0.995. Calculate the formula for the source of 0.95 and calculate the theoretical temperature value of the alternate source at each calibration point.
Aiming at the problem that the existing verification procedures can not verify the radiation thermometer with fixed emissivity,a scheme based on the equivalent radiation source replacement method is proposed. Combined with the characteristics of the band-pass radiation thermometer,the radiation thermometer measurement model is established. Based on the premise that the radiation thermometer receives the equal effective brightness of the spectrum,the measurement model is used to obtain the equivalent replacement emissivity using the existing black body radiation source with an effective emissivity of 0.995. Calculate the formula for the source of 0.95 and calculate the theoretical temperature value of the alternate source at each calibration point.
引文
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[5]崔超,余时帆,方晓琴,等.红外线辐射温度计的校准[J].工业计量,2010,20(S2):155-157+198.
[6]Saunders,P.Calibration of Low Temperature Infrared Thermoeters[J].Measurement Standards Lab of New Zealand,2009(22):1-4.
[2]原遵东,段宇宁,王铁军,等.发射率设定值不为1的辐射温度计的校准[J].计量技术,2007(5):43-46.
[3]宋向英.500℃以下工作用辐射温度计校准结果示值修正方法探讨[J].计测技术,2005(6):76-77.
[4]王文革.固定发射率辐射温度计校准中的温度修正计算方法[J].宇航计测技术,2006(2):17-23.
[5]崔超,余时帆,方晓琴,等.红外线辐射温度计的校准[J].工业计量,2010,20(S2):155-157+198.
[6]Saunders,P.Calibration of Low Temperature Infrared Thermoeters[J].Measurement Standards Lab of New Zealand,2009(22):1-4.