摘要
构建了一种镀有陶瓷薄膜的蓝宝石光纤为传感器的瞬态高温测试系统.系统包括蓝宝石高温光纤、锥形高温光纤、耦合器、传输光纤及光电探测器件.基于Plank黑体辐射定律,分析了系统工作原理,并以MATLAB进行了仿真研究.将已标定过的高温钨铼热电偶(测温度范围为1 000～2 000 ℃)和蓝宝石光纤温度传感器同时置于乙炔焰热源所形成的恒温区域中进行静态标定,结果表明,测量范围从1 200 ℃到2 000 ℃,测量不确定度(精度)为1 ℃.以脉冲CO2激光器输出阶跃热信号为动态激励源,获得温度传感器的动态响应曲线,其时间响应达30 ms,并且重复性非常好.运动乙炔焰模拟测试结果表明,高温测试范围可达2 000 ℃,可用来对兵器及国防工业等诸多涉及燃烧和爆炸等过程的瞬态温度进行测试.
This novel transient high temperature measurement system consists of the sapphire high temperature fiber sensor, taper high temperature fiber, coupler, transmission fiber and photo-detector. The working principle was analyzed according to the Plank's law of blackbody radiation and simulation was performed with the MATLAB software. The static calibration was achieved by placing the calibrated high temperature W-Re thermocouple and this novel sensor together into the steady high temperature region of oxyacetylene flame. Calibration results indicate that temperature measurement range is 1200°C to 2000°C and the uncertain of 1% can be achieved, and the dynamic respondent time is less than 30 ms. The experiment of testing the moving oxyacetylene flame shows that this sensor can be used to measure the transient high temperature up to 2000°C.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2005年第4期441-443,共3页
Journal of Optoelectronics·Laser
基金
中北大学电子测试国防重点实验室基金(51487040404)
中北大学科学基金(200408)资助。
