摘要
针对传统单CCD(Charge-coupled Device)传感器系统在测量高温辐射体温度时,精度低、测量范围窄以及实时性不足的问题,设计了基于截尾加权融合算法的多传感器CCD图像测温系统。选用了6个中性滤光片以扩大CCD测温范围,利用其组成的15组比色测温传感器,对实验熔池表面进行测温计算。用截尾均值概念构造加权因子,融合得到测量数据的精确估计值。实验结果表明:在测量900℃以上高温时,系统算法处理速度快,误差率保持在±2%以内。该方法有效地改善了多传感器CCD测温系统的实时性能,提高了测量精度。
In order to improve the accuracy,range and instantaneity of high temperature measurement, a CCD image tempera- ture measurement system was designed based on multi-sensor truncated mean weighed fusion. Firstly, CCD temperature measure- ment range was expanded by 6 light filters. Then 15 colorimetric-sensors calculated the surface temperature of experimental molten pool. Finally, the more accurate fusion estimate of temperature value was acquired by using truncated mean weighting factors. The experiment results demonstrate that the system has faster processing speed in the measurement of 900 ℃, and the errors are kept within ± 2%. This method is effective in improvement of system accuracy and instantaneity.
出处
《仪表技术与传感器》
CSCD
北大核心
2014年第8期88-91,共4页
Instrument Technique and Sensor
基金
国家自然科学基金项目(61171058)
河北省自然科学基金项目(F2010001970)
河北联合大学科学研究基金资助项目(Z201305)
关键词
数据融合
多传感器CCD
温度测量
截尾加权
data fusion
multi-sensor CCD
temperature measurement
truncated mean weighed
