基于PPP-BOTDA分布式光纤传感技术的管道健康监测应用研究

摘要

基于布里渊光时域分析(BOTDA)的分布式光纤传感技术已经逐渐广泛应用在各种民用、公用设备的应变与温度监测中.尤其是近年来兴起的一种新型传感技术:脉冲预泵浦布里渊光时域分析(PPP-BOTDA),通过引入预泵浦脉冲,获得了厘米级的空间分辨力.介绍了PPP-BOTDA技术的工作原理,阐述并探索研究了该新兴技术具有的优势与应用前景,并且在实验中验证了PPP-BOTDA技术在管道安全监测中的应用是可行的.%The distributed optical fiber sensor technology based on Brillouin optical time domain analysis (BOTDA) has been widely used in strain and temperature monitoring of various civil, utility equipment. Above all things, there is a new type of sensor technology in particular; pre-pump pulse Brillouin optical time domain analysis (PPP-BOTDA). Centimeter spatial resolution is obtained by introducing the pre-pump pulse. The working principle of PPP-BOTDA technology is described. The advantages and application prospects of the new technology is introduced. The feasibility of PPP-BOTDA technology in pipeline safety monitoring is verified in the experiments.