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.
出处
《计量学报》
CSCD
北大核心
2007年第2期129-132,共4页
Acta Metrologica Sinica
基金
国家863项目(2003AA529290)
