| 发热物体表面发射率在线长时测量方法 |
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| 引用本文： | 刘鑫,叶林,葛俊锋,张洪,陈斌.发热物体表面发射率在线长时测量方法[J].仪表技术与传感器,2011(8). |
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| 作者姓名： | 刘鑫 叶林 葛俊锋 张洪 陈斌 |
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| 作者单位： | 华中科技大学控制科学与工程系,湖北武汉,430074 |
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| 基金项目： | 中央高校基本科研业务费专项资金资助(2010QN046) |
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| 摘 要： | 为了解决发射率长时持续测量中的温度补偿问题,介绍了一种发热物体表面发射率的在线测量方法.其系统由半球反射罩、半球吸收罩、热电堆探测器和补偿用各测温元件等组成.文中详细分析了基于转换黑体法的发射率测量中的误差补偿问题,建立了合理可行的补偿模型,消除了反射罩、吸收罩和探测器冷端温度变化带来的影响,从而实现发射率的长时持续在线实时测量.通过对实验室标准样板进行对比实验,证实该方法切实可行,具有较好的应用前景.
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| 关 键 词： | 发射率 在线测量 转换黑体法 热电堆 温度补偿 |
Long-time Online Measurement for Emissivity of Heating Surface |
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| LIU Xin,YE Lin,GE Jun-feng,ZHANG Hong,CHEN Bin.Long-time Online Measurement for Emissivity of Heating Surface[J].Instrument Technique and Sensor,2011(8). |
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| Authors: | LIU Xin YE Lin GE Jun-feng ZHANG Hong CHEN Bin |
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| Affiliation: | LIU Xin,YE Lin,GE Jun-feng,ZHANG Hong,CHEN Bin(Department of Control Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | An online measurement for the emissivity of heating surface was introduced,especially for the problem of temperature compensation in long-time continuous measurement.The instrument mainly consists of a hemisphere reflector,a hemisphere absorber,thermopile detectors and several temperature measurement components.The errors compensation problem in measuring the emissivity based on the simulated blackbody was analyzed and a reasonably practicable compensation model was established.Through this model,the affect... |
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| Keywords: | emissivity online measurement conversion blackbody method thermopile temperature compensation |
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