精密红外辐射计测量模块研究  

Research on measurement module of precision infrared radiometer

作　　者：杨科 程刚[1] 郭羽[1] 周根东[1] 卢飞[1] 李辉[1] 刘建平[1] 孙宇楠[1] 宫经珠[1] 张旭 吴李鹏[1] 张清 孙帅 郭建[1] YANG Ke;CHENG Gang;GUO Yu;ZHOU Gendong;LU Fei;LI Hui;LIU Jianping;SUN Yu'nan;GONG Jingzhu;ZHANG Xu;WU Lipeng;ZHANG Qing;SUN Shuai;GUO Jian(Xi'an Institute of Applied Optics,Xi'an 710065,China;Xi'an North Electro-Optic Science and Technology Defense Co.,Ltd.,Xi'an 710043,China)

机构地区：[1]西安应用光学研究所,陕西西安710065 [2]西安北方光电科技防务有限公司,陕西西安710043

出　　处：《应用光学》2022年第4期738-743,共6页Journal of Applied Optics

基　　金：国防科技工业技术基础科研计划(J092012A001)。

摘　　要：红外辐射计用于红外热像仪测试设备的校准。介绍了一种用于红外辐射计的测量模块及方法。设计了采样保持的测量方案,通过参考信号生成采样脉冲,并将采样点设置在每个信号周期的1/4相位处,能显著提高微弱信号的测量能力。对于35℃的黑体辐射信号,通过与现有方案的对比实验,测量信号强度可提高57.6%;在红外热像仪测试设备背景温度为22℃条件下,通过与现有仪器的对比测试,测量信号精度可提升50%以上。The infrared radiometer is generally used for the calibration of the infrared thermal imager testing equipment.A measurement module and method for infrared radiometer were introduced.A measurement scheme of sample and hold was designed,the sampling pulse was generated from the reference signal,and the sampling point was set at the 1/4 phase of each signal period,which could significantly improve the measurement ability of weak signals.For the black-body radiation signal at 35℃,the measured signal strength could be increased by 57.6%by comparing with the existing scheme.Under the condition that the background temperature of the infrared thermal imager testing equipment was 22℃,the measurement signal accuracy could be improved by more than 50%through the comparison test with the existing instruments.

关 键 词：红外辐射计 相敏检波 采样保持 

分 类 号：TH741[机械工程—光学工程]