基于渗透测试的通信光缆损伤点定位方法

Method for Locating Damage Point of Communication Optical Cable Based on Penetration Test

由于传统通信光缆损伤点定位方法获取的损伤点异常信号波形较为稀疏,而且信号整体稳定性较差,极易对终端造成误判干扰,因此设计一种基于渗透测试的通信光缆损伤点定位方法。结合渗透测试原理设定参数,根据测试结果生成通信光缆OTDR曲线,进一步掌握通信光缆发生异常的多种原因及表现形式。基于小波降噪处理方法对通信光缆OTDR曲线的门限阈值进行处理,处理过程可被分为硬阈值处理与软阈值处理两部分,结合渗透测试结果的实际需求,选择不同的降噪处理方式,从而精准定位通信光缆损伤点。此外,通过对比实验证明所设计方法获取的损伤点异常信号波形较为密集,且信号的排布较为紧密,具有直观的定位优势。

In the traditional method for locating damage points of communication optical cables,the acquired abnormal signal waveforms of damage points are relatively sparse,and the overall signal stability is poor,which can easily cause misjudgment and interference to the terminal.Therefore,a method for locating damage points of communication optical cables based on penetration testing is designed.Combining the principle of penetration testing,setting penetration testing parameters,and generating communication optical cable OTDR curves based on the test results,to further grasp the various causes and manifestations of abnormalities in communication optical cables.Based on the wavelet noise reduction processing method,the threshold threshold of the communication optical cable OTDR curve is processed.The processing process can be divided into two processes,hard threshold processing and soft threshold processing.Combining the actual needs of the penetration test results,choose different noise reduction processing methods,and dynamic section to accurately locate the damage point of the communication optical cable.In addition,through comparative experiments,it is proved that the designed method has a denser waveform of abnormal signals at damage points,and the arrangement of signals is relatively close,which has an intuitive positioning advantage.