| 目标距离变化对热像仪测温精度影响分析 |
| Analysis of Influence of Distance on Temperature Measurement Accuracy of Infrared Thermal Imager |
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| 中文摘要: |
| 热像仪测温时，测量距离的变化会降低测温精度。本文根据红外辐射理论以及光学系统中辐射传输理论计算推导出测量误差与测温距离之间的关系。同时结合一套热像仪计算测量误差，提出一种通过Matlab修正距离影响的方法。在不同距离下测量黑体辐射源温度时，测温误差在0.09%以内，与没有做距离修正的测量值相比测温精度有很大程度的提升。 |
| 英文摘要: |
| The change of object distance would enormously decrease the precision of temperature measurementusing infrared thermal imaging system.In this paper, on the basis of theories of infrared object radiation andtranslationofradiation in geometry optics，formulas of tolerance of temperature measurement relations with object distance. Tolerance oftemperature measurement was calculated by using the parameters of a designed infrared thermal imaging system.Basing on the analysis，a method of improving the precision of temperature measurement by Matlab was given. The tolerance wouldbe just 0.09% to the same situation if the method was taken，which could reduce the effect on the precision of temperaturemeasurement using infrared thermal imaging system with the change of object distance. |
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| 中文关键词: 红外热像仪 测温精度 目标距离 温度修正 红外测温 |
| 英文关键词:infrared imaging system precision of temperature measurement object distance temperature correcting infrared temperature measurement |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2016.05.02 |
| 引用本文：孙禹ꎬ,蔡静.目标距离变化对热像仪测温精度影响分析[J].计测技术,2016,36(5):. |
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