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由于隧道火灾造成的危害极大,因而隧道温度监测对于隧道安全起着十分重要的作用。很多以电信号为工作基础的温度传感器在监测时会受到电磁信号的干扰,造成对监测的不稳定和不准确。分布式光纤测温传感器,其测温原理是拉曼散射和光时域反射(OTDR)技术,具有测温距离长、抗强电磁干扰、工作稳定、测温精度高等优点,能实时有效地对隧道温度进行监测,在隧道温度监测上具有很好的应用前景。
Due to the great harm caused by tunnel fire, tunnel temperature monitoring plays an important role in tunnel safety. Many temperature sensors based on electrical signals are subject to electromagnetic signal interference during monitoring, resulting in instability and inaccuracy of the monitoring. Distributed optical fiber temperature sensor, the temperature measurement principle is Raman scattering and optical time domain reflectometry (OTDR) technology, with a long distance measurement, anti-strong electromagnetic interference, stable, high precision temperature measurement, real-time and effective on the tunnel Temperature monitoring, monitoring of the tunnel temperature has a good application prospects.