基于DVS的振动源与传感通道垂直距离的计算方法

Calculation method of vertical distance between vibration source and sensing channel based on DVS

振动源与传感通道的垂直距离是光缆、电缆等线路运维人员关注的重要指标之一,对如何进行线路安全处置具有重要指导意义,提出一种基于分布式振动系统(DVS)的振动源与传感通道垂直距离的计算方法。通过实时采集光缆信号数据,分析了振动波的衰减特点,选择了合适的振动波振幅谱计算模型,并给出了振幅谱与振动源间隔距离的分布方程,以及垂直距离的近似计算方法。实验证明:该算法计算出的垂直距离误差较小,符合工程设计要求,具有较高的实际应用价值。

The vertical distance between the vibration source and the sensing channel is one of the important indicators concerned by the operators of optical cables and cables.It has important guiding significance for the safe disposal of the transmission line.A calculation method of the vertical distance between the vibration source and the sensing channel based on distributed vibration monitoring system(DVS)is proposed.Through real-time acquisition of cable signal data,the attenuation characteristics of vibration wave are analyzed,the appropriate calculation model of vibration wave amplitude spectrum is selected,and the distribution equation of the amplitude spectrum and the distance between the vibration source and the vertical distance is given,as well as the approximate calculation method of the vertical distance.Experiments show that the vertical distance error calculated by this algorithm is small,which meets the engineering design requirements and has high practical application value.