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提出了一种由光纤光谱仪与黑白CCD相机构成的新型实时在线高温温度场测量系统.该系统用光纤光谱仪和黑白CCD相机同时测得高温辐射源的真实发射率和光强场,然后根据发射率和光强场计算得到高温辐射源的温度场.利用该系统对高温发光物体——卤素灯灯丝的温度场进行测量,得到了不同电压值下卤素灯灯丝的温度场分布图,并将所得温度场的最高温度与相应工况下发射光谱法测量得到的最高温度进行比较.结果表明:两者相对偏差在5%以内;所提出的测量方法既弥补了发射光谱法不能获得场分布的缺陷,又避免了比色法测温中单色波长带宽和发射率瞬时变化带来的误差,是一种有效的温度场测量方法.
A novel real-time on-line high temperature temperature field measurement system composed of optical fiber spectrometer and black and white CCD camera is proposed.The system realizes the real emissivity and light intensity field of the high temperature radiation source simultaneously with the optical fiber spectrometer and the black and white CCD camera, And temperature field of the high temperature radiation source were calculated.The temperature field of halogen lamp was measured by using this system.The temperature field distribution of the halogen filament was obtained under different voltage values and the temperature The results show that the relative deviation between the two is within 5%. The proposed method not only makes up for the defect that the emission spectrum method can not obtain the field distribution, But also avoids the error caused by the instantaneous change of monochromatic wavelength bandwidth and emissivity in colorimetric temperature measurement. It is an effective method of temperature field measurement.