车载天然气管道泄漏遥感探测技术的研究

Research on Vehicle-Based Remote Sensing of Natural Gas Pipeline Leakage

我国天然气工业已经进入了迅速增长阶段,其作为一种洁净、高效的能源在经济发展以及人们的日常生活中扮演着越来越重要的角色。天然气在生产、加工、运输和储存等过程中泄漏是难以避免的,这不仅会造成浪费,甚至还会造成重大灾难事故,这就使得对天然气管道泄漏进行探测显得尤为重要。文章围绕着车载式天然气管道泄漏遥感探测展开研究,设计并建立了一套车载式天然气管道泄漏遥感探测系统及模拟车载运动条件的实验平台,提出了一种简易可行的积分浓度标定方法。同时基于此实验平台和新的标定方法对不同反射距离,不同反射体,不同反射角度以及不同运动扫描速度进行了测量对比,用以模拟真实外场环境。实验结果和理论分析具有很好的一致性,该系统可实现探测距离为70m,时速为53.3km.h-1下,对较低浓度标准气体进行遥感探测,最小探测极限为28.9ppm.m。实验结果能够满足实际探测需要。

In the present paper the authors designed a vehicle-based remote sensing system using simulated platform and presented a new method of concentration calibration of natural gas pipeline leakage remote sensing.By investigating the performance of different distance,different material,different angle of topographic back scatter and different scan speed,a good coincidence was achieved between experimental results and theoretical results.The system can realize the remote detection of low-level methane concentration at a velocity of 53.3 km·h-1,and the detecting distance is about 70 m with the minimum detectable sensitivity being 28.9 ppm·m.The research result shows the feasibility in the application.