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兵工学报 ›› 2013, Vol. 34 ›› Issue (10): 1341-1344.doi: 10.3969/j.issn.1000-1093.2013.10.023

• 研究简报 • 上一篇    

瞬态表面温度传感器超高温外推测试技术研究

郝晓剑1,2, 郝丽娜1,2, 周汉昌1,2, 姜三平1,2, 李园1,2   

  1. 1. 中北大学仪器科学与动态测试教育部重点实验室,山西太原030051;2. 中北大学电子测试技术重点实验室,山西太原030051
  • 收稿日期:2012-12-24 修回日期:2012-12-24 上线日期:2013-12-16
  • 作者简介:郝晓剑(1969—),女,教授,硕士生导师。
  • 基金资助:
    山西省高等学校留学回国人员科研项目(2012);山西省回国留学人员科研项目(2012-068); 太原市科技局明星专项项目 (120247-20)

Research on Extrapolation Method for Transient Surface Temperature Sensor

HAO Xiao-jian1,2, HAO Li-na1,2, ZHOU Han-chang1,2, JIANG San-ping1,2, LI Yuan1,2   

  1. 1. Ministry of Education Key Laboratory of Instrumentation Science and Dynamic Measurement,North University of China, Taiyuan 030051, Shanxi, China; 2. Science and Technology on Electronic Test and Measurement Laboratory, North University of China, Taiyuan 030051, Shanxi, China
  • Received:2012-12-24 Revised:2012-12-24 Online:2013-12-16

摘要: 提出利用外推法拓宽蓝宝石光纤黑体腔高温传感器测量范围,通过分析蓝宝石光纤黑 体腔的导热规律建立了瞬态受热的黑体腔外推模型,利用分离变量法对外推模型进行求解,得到传 感器的测温上限为3 005 ℃. 设计完成了外推方法的实验验证,利用大功率高频可调制CO2 激光脉 冲作为1 500 ℃高温阶跃输入信号测得该传感器时间常数为10 -2 s 数量级。利用同一激光脉冲作 为热源、用该传感器和校准过的高速红外测温仪同时测得的黑体腔内外膜层温度变化曲线,验证了 外推模型及方法的正确性。

关键词: 仪器仪表技术, 外推法, 黑体腔, 瞬态超高温, 蓝宝石光纤温度传感器

Abstract: A new temperature extrapolation method, which is used to broaden the measurement range of a sapphire optical fiber blackbody cavity temperature sensor, is proposed. A transient heating black body cavity extrapolation model is set up by analyzing the thermal conductivity law of the blackbody cavity, and the method of separation of variables is used to solve the extrapolation model. The sensor can be used to measure the transient high surface temperature (3 005 ℃) by temperature extrapolation. Experimental verification of the extrapolation method is designed and completed. When a high power and high frequency modulated CO2 laser pulse is used as exciting source to heat the sensor to 1 500℃, the measured time response of the sensor is on the order of 10-2 s. The sensor and a high-speed infrared thermometer are simultaneously used to measure the variations in temperature of the coatings inside and outside the blackbody cavity by using CO2 laser step pulse. The result shows that the extrapolation model is valid.

Key words: technology of instrument and meter, extrapolation, blackbody cavity, transient ultra-high temperature, sapphire optical fiber temperature sensor

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