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为提高单波段红外热像仪测温的准确性,根据红外热像仪测温的原理和计算公式,得到了红外热像仪测温的双温双波段法,该方法通过在两个不同的响应波段下进行测温并改变被测物体温度,从而构造不同的测温方程然后通过迭代求解得到物体表面温度,通过相关实验表明,采用常规测量方法测得的物体温度与真实温度有一定偏差,不能准确地测量物体温度;运用双温双波段法可以较准确地测量郎伯体材料的表面温度,其误差很小.该方法可以在无需知道被测物体表面发射率的情况下得到物体的表面温度,从而减少了红外测温中由于发射率测量不准造成的误差.
In order to improve the accuracy of single-band infrared camera temperature measurement, according to the principle and calculation formula of infrared camera temperature measurement, the dual-temperature dual-band temperature measurement method of infrared camera is obtained. The temperature of the object under the response band is changed and the temperature of the object under test is changed so as to construct different temperature measurement equations and obtain the surface temperature through iterative solution. Can not accurately measure the temperature of the object.Using the dual-temperature dual-band method can accurately measure the surface temperature of the Lambertian material, the error is small.This method can get the surface of the object without knowing the surface emissivity of the measured object Temperature, thereby reducing the infrared temperature measurement due to the error caused by inaccurate measurements.