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由于缺少管道沿途测量数据,近海管道运输中的泄漏检测问题比陆地流体管道泄漏检测系统更具有挑战性.我们用传输线模型来考虑其线性动力学部分,然后通过有限差分法和偏微分方程拉普拉斯变换来比较传递函数的频域响应.仿真结果表明,有限维模型在低频下可以有效地逼近原始线性模型.由于近海管道监控与数据采集系统缺少传感器,进一步提出了一种新型集成漂流传感器的方法来解决此类型的检测问题并对数据同化框架进行了简要地介绍.
Due to the lack of measured data along the pipeline, the problem of leak detection in offshore pipeline is more challenging than that of terrestrial fluid pipeline leak detection system.We consider the linear dynamic model with the transmission line model, and then through finite difference method and partial differential equation Lap RAS transform to compare the frequency response of the transfer function.The simulation results show that the finite-dimensional model can effectively approximate the original linear model at low frequency.Because of the lack of sensors in the offshore pipeline monitoring and data acquisition system, a new integrated drifting sensor Method to solve this type of detection problems and a brief introduction to the data assimilation framework.