Long-distance oil and gas pipeline safety monitoring device based on distributed optical fiber measurement

• Main Authors: HUO DIANHENG, HUO DIANXING
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2021
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; PHYSICS; TESTING

A long oil and gas pipeline safety monitoring device based on distributed optical fiber measurement comprises a light source module, a propagation module, a processing module, a vibration optical cable and a waveform generator, the light source module continuously emits continuous laser, and the propagation module is located behind the light source module and comprises an acoustic optical modulator, an erbium-doped optical fiber amplifier and a circulator. The output end of the light source module is connected with the input end of the acoustic optical modulator, the output end of the acoustic optical modulator is connected with the input end of the erbium-doped optical fiber amplifier, the output end of the erbium-doped optical fiber amplifier is connected with the input end of the circulator, and the output end of the circulator is connected with the input end of the vibration optical cable and the input end of the processing module. The processing module collects and calculates optical fiber feedback signa