Cui Shuanglong, Sun Bojun, Sun Xiaogang
School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150001, China.
Rev Sci Instrum. 2020 May 1;91(5):054903. doi: 10.1063/1.5121214.
In order to improve the accuracy of an infrared thermometer, the main uncertainty sources of the system are analyzed and a compensation function is established on the basis of these corrections. The verification experiments are carried out by using a self-developed infrared thermometer and a blackbody. The experimental results indicate that the compensation function can reduce the infrared thermometer expanded uncertainty from ±3.6 °C to ±1.9 °C in the temperature range of -40 °C to 60 °C. This method can effectively improve the temperature measurement accuracy of an ambient temperature infrared thermometer in its measurement range.
为提高红外体温计的精度，分析了系统的主要不确定度来源，并在此基础上建立了补偿函数。利用自行研制的红外体温计和黑体进行了验证实验。实验结果表明，在-40℃至60℃的温度范围内，补偿函数可将红外体温计的扩展不确定度从±3.6℃降低至±1.9℃。该方法能有效提高环境温度红外体温计在其测量范围内的温度测量精度。
