多光谱红外点温仪在辐射环境下的测温  

Temperature measurement of multi-spectral infrared thermometer in radiation environment

作　　者：柴葳[1] 郝庆瑞[1] 张佳斌[1] 郑瑶[1] Chai Wei;Hao Qingrui;Zhang Jiabin;Zheng Yao(Aircraft Strength Research Institute of China,Xi'an710065,China)

机构地区：[1]中国飞机强度研究所四室,西安

出　　处：《飞行器强度研究》2022年第3期6-11,共6页Aircraft Strength Research

摘　　要：辐射测温的准确度依赖于发射率的准确测量,当前发射率的标定精度在3%以上,无法满足工程试验中对温度准确测量的需求,采用多光谱点温仪进行测温,可降低发射率对测温准确度的影响。通过筛选合适波长、研究传感器灵敏度随温度的变化规律,并修正辐射环境中漫射杂光产生的影响,实现准确测温的目的。经实验验证与热电偶测量结果基本吻合。The accuracy of radiation temperature measurement depends on the accurate measurement of emissivity.The current calibration accuracy of emissivity is more than 3%,which can't meet the requirements for accurate temperature measurement in engineering tests.Therefore.a multi-spectral point thermometer is used for temperature measurement to reduce emission.The rate of influence on the accuracy of temperature measurement.Establishing the current measuring device,by screening a suitable wavelength.the sensitivity study variation with temperature,and correcting the radiation environment diffuse light generated drop impact,accurate measurement temperature purposes.And the experimental verification is basically consistentwith the thermocouple measurement results.

关 键 词：辐射环境 多光谱测量 发射率 

分 类 号：TH8[机械工程—仪器科学与技术]