东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (2): 162-165.DOI: 10.12068/j.issn.1005-3026.2018.02.003

• 信息与控制 • 上一篇    下一篇

前置反射器比色高温计的研究

车勋建， 谢植   

  1. (东北大学 信息科学与工程学院， 辽宁 沈阳110819)
  • 收稿日期:2016-10-31 修回日期:2016-10-31 出版日期:2018-02-15 发布日期:2018-02-09
  • 通讯作者: 车勋建
  • 作者简介:车勋建(1985-)， 男， 吉林省吉林市人，东北大学博士研究生; 谢植(1957-)，男，辽宁沈阳人，东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(61273178).

Development of a Two-Color Pyrometer with a Reflector Placed Ahead

CHE Xun-jian， XIE Zhi   

  1. School of Information Science & Engineering， Northeastern University， Shenyang 110819， China.
  • Received:2016-10-31 Revised:2016-10-31 Online:2018-02-15 Published:2018-02-09
  • Contact: CHE Xun-jian
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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℃.

关键词: 反射器, 比色高温计, 表面温度, 温度测量, 发射率

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℃.

Key words: reflector, two-color pyrometer, surface temperature, temperature measurement, emissivity

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