热辐射型光纤高温传感器及其性能研究

介绍了一种光纤高温传感器及其测温原理和测量方法,研究了传感器的设计结构、稳定性、一致性和互换性等。系统根据黑体热辐射原理,采用双波长比色测温法和光纤传感技术来实现准确测温。结果表明:"接触—非接触"式的测温结构避免了光纤直接接触高温源,传输光功率衰减对传感器测量精度的无影响,传感器具有很好的一致性,完全可以互换使用,也可实现高温高压设备中的温度测量。

Study on thermal radiation optical fiber temperature sensor and its property

A kind of high temperature optical fiber sensor is introduced, as well as its temperature measuring principle and measuring method. The structure, stability, consistency , compatibility and so on are studied According to the principle of blackbody radiation, the system achieves accurate temperature measurement by using double wavelength colorimetric thermometry and optical fiber sensing technology .The results show that optical fiber is avoided to contact heat source directly by using the contact-noncontact type temperature measuring structure. The attenuation of transmission optical power has no impact on the measuring precision. With very good consistency, the sensor can be used interchangeably. So the temperature measurement in high temperature and high pressure environments can be achieved.