The application of wavelet transform in the fiber pipeline safety pre-warning system

Now pipeline transportation has become the most important mode of transportation of oil and natural gas. But the safety accidents frequently occurred have more and more attracted people´s attention. A kind of pipeline safety pre-warning system by China petroleum pipeline natural communication power engineering corporation which is based on the wavelet transform to remove random noise is proposed. The communication optical cable is installed along with pipeline as a distributed sensor, and the soil vibration signal can be real-time collection near the pipeline. Finally, through signal analysis processing to achieve de-noise. The de-noised signal will make it more convenient to identify the type of problems, such as the mechanical execution, man-made destruction and natural erosion, etc.