| 前置反射器比色高温计的研究 |
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| 引用本文： | 车勋建,谢植.前置反射器比色高温计的研究[J].东北大学学报(自然科学版),2018,39(2):162-165. |
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| 作者姓名： | 车勋建 谢植 |
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| 作者单位： | (东北大学 信息科学与工程学院， 辽宁 沈阳110819) |
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| 基金项目： | 国家自然科学基金资助项目(61273178). |
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| 摘 要： | 研究了一种改进的比色高温计测量表面温度，测量范围为600~1200℃.将半球型镀金反射器置于比色高温计上，利用多次反射效应，可缩小两个接收波长的有效发射率之间的差异，从而减小比色高温计误差.研究了反射器对焦情况下的辐射特性，推导出有效发射率的表达式.为避免反射器对被测面温度场的破坏，设计了一套快速测量装置，每次测量需时0.7s.为验证其准确性，制作了平片热电偶，直接测量平片热电偶的表面温度.结果显示，与平片热电偶相比，测量误差小于1.1℃.
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| 关 键 词： | 反射器 比色高温计 表面温度 温度测量 发射率 |
Development of a Two-Color Pyrometer with a Reflector Placed Ahead |
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| CHE Xun-jian,XIE Zhi.Development of a Two-Color Pyrometer with a Reflector Placed Ahead[J].Journal of Northeastern University(Natural Science),2018,39(2):162-165. |
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| Authors: | CHE Xun-jian XIE Zhi |
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| Institution: | School of Information Science & Engineering， Northeastern University， Shenyang 110819， China. |
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| Abstract: | An improved two-color pyrometer for measuring surface temperature ranging from 600℃ to 1200℃ is developed. A gold-plated semispherical reflector is placed ahead of a two-color pyrometer. When the reflector is positioned facing the measured target， the received radiance energies are increased， and the disparity between the effective emissivities of the two received wavelengths is decreased. As a result， the measurement error of the two-color pyrometer is reduced，compared with the one without a reflector. The expression of effective emissivity for the focused reflector is deduced. A fast measurement apparatus is developed， which spends 0.7s on one time of measurement， in order to prevent temperature disturbance. A plain-type thermocouple is made， and the proposed pyrometer measures the surface temperature of the thermocouple for validation. The measurement error is within 1.1℃. |
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| Keywords: | reflector two-color pyrometer surface temperature temperature measurement emissivity |
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