基于分布式光纤测温技术的LNG泄漏监测系统

摘要

This paper introduced the optical fiber Raman scattering temperature measurement and do-main reflection positioning technology. Aiming the problems of undetected and inaccurate location for the traditional point temperature sensor in practical application, the LNG leakage monitoring system based on distributed optical fiber temperature measurement technology is put forward. The system adopts double channel calibration measurement mode, the accuracy of temperature measurement and leak location is im-proved. The system is described in detail from two aspects of hardware composition and software function.%介绍了光纤拉曼散射效应测温和光时域反射定位的技术原理，针对传统点式测温传感器在实际应用中存在的漏检和定位不精确等问题，提出了基于分布式光纤测温技术的LNG泄漏监测系统，该系统采用双通道校正测量模式，提高了温度测量和泄漏定位的准确度，从硬件组成和软件功能两方面对该系统进行了详细的阐述。