自校准地表/水表面红外辐射测温仪的研制

研制了一种具有自校准功能的测量地面或水表面辐射温度的仪器,阐述了该仪器的设计原理、具体结构、测试过程及最终的实验结果。为了验证仪器的性能,进行了定标黑体的发射率测量实验,控温稳定性试验,结果表明黑体发射率高于0.996,控温稳定性优于0.04 K;对各个温度传感器进行了标定校准;完成了控制与数据采集程序的编写;进行了样机的辐射测温实验。最后确定出自校准地水表面红外辐射测温仪的测温范围为223～333 K,测温不确定度为0.2 K。

Development of Self-calibrated Infrared Radiation Thermometer for Surface of Ground or Water

An instrument for measuring the radiation temperature of the ground or water surface with self-calibration function was developed. The design principle, specific structure, test procedure and final experimental results of the instrument were described. In order to verify the performance of the instrument, the emissivity measurement experiment of the calibration blackbody and the temperature stability test were carried out. The results show that the blackbody emissivity is higher than 0.996, and the temperature control stability is better than 0.04 K. The calibration of each temperature sensor was performed; The control and data acquisition procedures were completed; the radiation temperature measurement experiment of the prototype was carried out. Finally, the temperature range of the self-calibrated surface water meter infrared radiation thermometer is 223~333 K, and the temperature uncertainty is 0.2 K.