蓝宝石光纤黑体腔传感器定度技术研究

基于Planck辐射原理和光纤测温技术的溅射高温陶瓷薄膜的蓝宝石光纤黑体腔传感器可进行恶劣环境下瞬态高温的测量。本文介绍了该传感器的结构和用来对其进行定度的系统，将已标定的钨铼热电偶和被定度的瞬态表面高温传感器同时置于乙炔焰热源所形成的高温均热金属熔池，实现了传感器静态定度；采用阶跃上升的高功率CO2激光脉冲对黑体感温腔加热进行动态标定，解决了此类高温传感器在工程应用中的标定问题。实验结果表明该传感器响应时间在10^-2s数量级，标定技术简单实用，利用该传感器首次成功地测量了某导弹发射时的瞬态高温。

The Graduation Technology of Sapphire Fiber Blackbody Cavity Sensors

A sapphire fiber blackbody cavity transient surface high-temperature sensor which is splashed ceramics film can be suitable for harsh environments, this sensor is based upon Planck radiance principle and optic fiber temperature measurement technique. The structure and calibration technology of the sensor is introduced, the static graduation is carried out by calibrated W-Re thermocouple and the being graduated sapphire fiber blackbody cavity in the thermostatic metal region which is close to the molten pit of ingot heated by oxyacetylene flame; the dynamic graduation is put in practice by an exciting source of a high power step-up CO2 laser beam heating up blackbody cavity, the response time is acquired. The experimental results show that the dynamic response time is of the order of 10^-2 second. The calibration technology is simple and feasible successfully. A transient surface high-temperature for a missile launch frame is succeeded achieved.