基于渗透测试的通信光缆寻障定位仿真研究

针对传统通信光缆寻障定位方法信号去噪性能较差的问题,提出一种基于渗透测试的通信光缆寻障定位方法,基于渗透测试对通信光缆实施OTDR测试,设定仪表上的物理参数,获取其OTDR曲线,从而获取通信光缆活动接头、断裂、弯曲等各种故障信息,完成OTDR测试后,计算故障前与故障后的具体光功率差值,获取通信光缆的故障点发生位置,确定故障点发生位置后,利用溶接点定位方法分析OTDR曲线,获取测试端与故障点之间的光纤长度、测试端距各个机房的光纤长度,对该故障点进行准确定位,实现了基于渗透测试的通信光缆寻障定位。实验结果表明,基于渗透测试的通信光缆寻障定位方法的去噪信号高频部分波形更加密集且平稳,即该方法的信号去噪性能较好,更适用于通信光缆的寻障定位。

Simulation Research on Obstacle-Seeking and Location of Communication Optical Cable Based on Penetration Testing

Traditionally, the signal denoising performance of communication optical cable location method is poor. Therefore, this paper puts forward a method to locate the fault of communication optical cable based on penetration test. The OTDR test was performed on communication optical cable and the physical parameters of instrument were set to get OTDR curve. Thereupon then, all of the fault information of communication optical cable was obtained. After OTDR test, the difference of specific optical powers before and after the fault was calculated, and the location of fault point was obtained. The fusion splices location method was used to analyze OTDR curve. The length of optical fiber between the test end and the fault point and the length of optical fiber between the test end and computer room were obtained. Finally, the fault point was located accurately. Thus, the fault location of communication optical cable based on penetration test was achieved. Simulation results prove that the high-frequency waveform of denoising signal based on penetration test is denser and more stable. Meanwhile, it is more suitable for the troubleshooting location of communication optical cable.