系统积热对红外偏振成像系统工作性能的影响  

Impact of system thermal accumulation on working performance of self-developed infrared polarization imaging system

作　　者：毛玮韵 肖嵘 司文荣 王劭菁 裘晔 周俊焯 郝佳 虞益挺 MAO Weiyun;XIAO Rong;SI Wenrong;WANG Shaojing;QIU Ye;ZHOU Junzhuo;HAO Jia;YU Yiting(State Grid Shanghai Electric Power Research Institute,Shanghai 200437,China;Key Laboratory of Scale Manufacturing Technologies for High-Performance MEMS Chips of Zhejiang Province,Key Laboratory of Optical Microsystems and Application Techbnologies of Ningbo City,Ningbo Institute of Northwestern Polytechnical University,Ningbo 315103,China;Key Laboratory of Micro/Nano Systems for Aerospace(Ministry of Education),Key Laboratory of Micro and Nano Electro-Mechanical Systems of Shaanxi Province,School of Mechanical Engineering,Northwestern Polytechnical University,Xi′an 710072,China)

机构地区：[1]国网上海市电力公司电力科学研究院,上海200437 [2]西北工业大学宁波研究院浙江省高性能M EM S芯片规模制造技术重点实验室,宁波市光学微系统及应用技术重点实验室,浙江宁波315103 [3]西北工业大学机电学院空天微纳系统教育部重点实验室,陕西省微纳机电系统重点实验室,陕西西安710072

出　　处：《光学精密工程》2025年第5期702-715,共14页Optics and Precision Engineering

基　　金：国家电网有限公司科技项目资助(No.52094023003B)。

摘　　要：深入研究旋转扫描偏振成像系统中定子绕组热积累对红外偏振成像质量的影响,并提出了优化方案。针对自主研制的分时型红外偏振成像系统,分析了定子绕组热积累导致红外热噪声增加进而影响成像质量的机理;通过解析系统的结构设计,探讨了定子绕组发热的产生原因,理论上阐述了热噪声对系统成像的影响。从室温至正常工作以后绕组的稳态温度区间开展对比实验,并对目标场景的偏振特征图像进行了分析。实验结果表明:绕组发热导致的红外热噪声显著影响了红外偏振成像系统的成像性能,在模拟沙地的目标场景中,其结构相似度和峰值信噪比分别下降了32.98%和51.87%,均方误差增加了19.49倍。最后,通过对定子绕组的改进设计,将自主研制的红外偏振成像系统旋转机构的稳态温度降低34.3%。An in-depth investigation was conducted regarding the influence of heat accumulation in stator windings on the imaging quality of time-division infrared polarization imaging systems,leading to the proposal of an optimization scheme aimed at mitigating this impact.Initially,by concentrating on a self-developed time-division infrared polarization imaging system,the mechanism through which heat accumulation in the stator windings results in increased infrared thermal noise,thereby compromising imaging quality,was analyzed.The structural design of the system was examined to explore the causes of heat generation in the stator windings,and a theoretical elucidation of the effects of thermal noise on imaging performance was provided.Subsequent comparative experiments were performed across a steady-state temperature range of the windings,from room temperature to post-normal operation,with an analysis of polarization characteristic images of the target scenes.The experimental results demonstrated that the infrared thermal noise induced by heating of the windings significantly undermined the imaging performance of the developed infrared polarization imaging system.In the simulated sandy target scene,the structural similarity index(SSIM)and peak signal-to-noise ratio(PSNR)diminished by 32.98%and 51.87%,respectively,while the mean squared error(MSE)escalated by a factor of 19.49.Ultimately,an improved design of the stator windings facilitated a reduction of 34.3%in the steady-state temperature of the rotating scanning machinery within the self-developed infrared polarization imaging system.

关 键 词：红外偏振成像 热噪声分析 旋转扫描机构 图像质量 

分 类 号：TN216[电子电信—物理电子学] O436.5[机械工程—光学工程]