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基于图像测量技术的双波长测温仪在线校准方法
Alternative TitleOnline Calibration Method of Dual-wavelength Thermometer Based on Image Measurement Technique
王飞龙; 翟光杰; 孙志斌
Department空间技术部
Source Publication仪表技术与传感器
2016
Issue4Pages:40
ISSN1002-1841
Language中文
Keyword双波长测温仪 图像处理 在线校准 静电悬浮 热膨胀系数
Abstract红外测温的方法具有非接触、能够测量极高温度的特点,但其测温精度易受材料自身和环境的影响,针对静电悬浮材料实验装置中双波长测温仪温度测量存在偏差的问题,设计了一种基于图像测量技术的在线校准方法。采用CCD相机获取测温样品的图像,通过边缘提取拟合计算样品体积随温度的变化,与材料自身实际的热膨胀系数对比,修正双波长测温仪的发射率比值。通过对纯金属锆的实验,比对校准后测量的熔点温度,验证了该在线校准方法。
Other AbstractInfrared thermometry method have the advantages of non-contact and extreme high temperature measurement. But its measurement accuracy was affected by the materials and environments. An online calibration method based on image technique was designed to solve the measurement deviation problem of the dual-wavelength thermometer in the electrostatic levitation facility.The sample images were recorded by CCD camera.The image edge was extracted to calculate the volume expansion as a function of temperature. By comparing it with the thermal expansion coefficient of the material, the ratio of the dual-wavelength emissivities was calibrated. A pure Zr sample was experimented to calibrate the thermometer. By checking the melting temperature of the Zr sample, the calibration method is verified.
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5589
Collection空间技术部
Recommended Citation
GB/T 7714
王飞龙,翟光杰,孙志斌. 基于图像测量技术的双波长测温仪在线校准方法[J]. 仪表技术与传感器,2016(4):40.
APA 王飞龙,翟光杰,&孙志斌.(2016).基于图像测量技术的双波长测温仪在线校准方法.仪表技术与传感器(4),40.
MLA 王飞龙,et al."基于图像测量技术的双波长测温仪在线校准方法".仪表技术与传感器 .4(2016):40.
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