多波长可视化测温系统标定的实验研究  

The Calibration and Experiment Research of Multiple-wavelength Visual Method Flame Temperature Instrumentation System

作　　者：李志宏[1] 穆怀萍[1] 姜凡[1] 刘石[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080

出　　处：《计量学报》2007年第2期129-132,共4页Acta Metrologica Sinica

基　　金：国家863项目(2003AA529290)

摘　　要：讨论了一种基于光学的火焰/温度场测量系统的标定方法。借助黑体炉等标定源,利用温控系统提供温度参数,经CCD系统成像得到图像的灰度值,通过函数拟合获得辐射图像灰度与温度之间的关系。通过调整不同的快门速度,扩大了CCD的动态范围,从而扩大测温范围。应用图像处理技术对辐射图像去噪,对标定数据进行了整理和拟合,并对结果进行了分析。A study on the calibrated method for a flame/temperature measurement system based on optical sensing is presented. This system is calibrated using a blackbody furnace as standard temperature source. The relationship between flame temperatures and grey level of the images is established through image processing and function correlation. This novel method of multi-shutter speed calibration can expand the range of temperature measurement. Digital images are collected and pretreated through image processing and calibrated data are worked out and analyzed.

关 键 词：计量学 黑体炉 CCD相机 火焰/温度 快门速度 

分 类 号：TB971[一般工业技术—计量学]