Time Constant Measurement of Thermocouple by Modulated Laser

杨述平

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Time Constant Measurement of Thermocouple by Modulated Laser

更新时间：2026-09-14

- Time Constant Measurement of Thermocouple by Modulated Laser
- 激光调制法的热电偶时间常数测量
- Issue 3, Pages: 246-250(2007)
- 作者机构：
  
  中北大学电子测试技术国防科技重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2007
- 稿件说明：
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杨述平. Time Constant Measurement of Thermocouple by Modulated Laser[J]. 2007, (3): 246-250.
DOI：

杨述平. Time Constant Measurement of Thermocouple by Modulated Laser[J]. 2007, (3): 246-250. DOI：

摘要

在瞬态温度测量中

为了获得准确的测量结果

要求测温传感器有良好的瞬态响应特性

时间常数是反映瞬态响应的参数之一.本文建立了热电偶时间常数测量系统

建立并分析了热电偶瞬态响应的数学模型;用美国相干公司K-500型CO2激光器测试了几种不同热电偶的时间常数.结果表明

利用此大功率高频调制CO2激光脉冲作为激励源

可以测量时间常数为亚毫秒量级的热电偶及其它表面温度传感器.

Abstract

In transient temperature measurement

temperature sensor should have excellent transient characteristic for acquiring accurate result.Time constant is one of transient responding parameters.So time constant measurement system is founded and composition of the system are mainly given

the transient responding model of thermocouple is developed and analyzed.This system is used to test time constant of several different kinds of thermocouple by coherent K-500 CO

laser.The experimental results have shown that the high frequency modulated and high power CO

laser as the exciting source can be used to measure thermocouple or transient surface temperature sensor with a time response of the sub-millisecond order.

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references

李科杰.新编传感器技术手册[M].北京:国防工业出版社,2002:77-93.

张存芳.温度传感器时间常数测试[J].宇航计测技术,1999,19(2):31-34.Zhang Cunfang.Time constant measurement of temperature sensor[J].Aero Space Measurement Technology,1999,19(2):31-34.(in Chinsese)

杜建红.缸套瞬态温度场有限元模型研究[J].测试技术学报,1996,17(1):59-63.Du Jianhong.Numerical simulation of temperature field in cylinder head during unstated process[J].Journal of NorthChina Institute of Technology of NCIT,1996,17(1):59-63.(in Chinese)

陈焕生.温度测试技术及仪表[M].北京:水利电力出版社,1987:334-391.

Mano J F,Cahon J P.A simple method for calibrating the temperature in dynamic mechanical analysers and thermalmechanical analysers[J].Polymer Testing,2004,23(4):423-430.

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