Aiming at the difficulty to detect leakage for gas pipelines with traditional methods

a leakage detection technology for gas pipelines based on the principle of distributed fiber Bragg grating（FBG） is proposed.FBG sensors which is set up along the pipeline

acquires the signals of pressure and vibration signals created by some events such as leakage

mechanical disturbance.Use grating matching and automatic telling technique to detect and locate leakage.The experiment shows that this method has the capacity of real time detecting and locating leakage for gas pipelines.