基于成像光谱的温度场重建  

Reconstructing temperature field based on imaging spectrum

作　　者：洪途 赵猛[1] 秦天令 蔡红星[1] HONG Tu;ZHAO Meng;QIN Tianling;CAI Hongxing(College of Science,Changchun University of Science and Technology,Changchun 130022,China;School of Optoelectronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]长春理工大学物理学院,吉林长春130022 [2]北京理工大学光电学院,北京100081

出　　处：《哈尔滨工程大学学报》2022年第7期1036-1042,共7页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(41404109)。

摘　　要：针对目前利用接触法和非接触法测量火焰的温度场分布往往无法同时保证实时性和准确率的问题,本文采用基于八谱段多光谱滤光片阵列成像的多光谱相机采集火焰图片,反演得到的多光谱数据用于计算温度,最后实现火焰温度场的测量。实验结果表明:相比于当前多种温度场重建算法,基于多光谱相机拍照的辐射测温技术能够实现瞬时火焰温度场测量,所测得的温度整体误差大幅减小,在很大程度上提高了火焰温度场测量的实时性及准确率。Currently,neither the contact nor noncontact methods for measuring the flame temperature field can guarantee real-time and accuracy simultaneously.A multispectral camera based on eight-spectrum multispectral filter array(MSFA)imaging is used to collect flame images to address this issue.Additionally,multispectral inversion data are used to calculate the temperature and measure the flame temperature field.The experimental results show that,when compared to the current temperature field reconstruction algorithms,the radiation temperature measurement technology based on a multispectral camera can realize the instantaneous flame temperature field measurement,and the overall temperature error is considerably reduced,which substantially improves the performance of real-time and the accuracy of flame temperature field measurement.

关 键 词：多光谱相机 成像光谱 非接触测温 火焰测温 多光谱芯片 温度场 光谱获取 温度反演 

分 类 号：O43[机械工程—光学工程]