System for monitoring water content around oil and gas pipeline in freeze soil area

The utility model provides a system for monitoring water content around an oil and gas pipeline in a freeze soil area based on fiber grating sensor technology. A fiber grating water content sensor group is installed around the oil and gas pipeline (2) in the freeze soil area, all fiber grating sensors are connected in series in a welding mode, an optical cable (12) is led into a monitoring station to be connected with an optical switch (13), the optical switch (13) is connected with a fiber grating demodulator (14) which is connected with a lower computer (15), data preprocessed by the lower computer (15) is transmitted to a lower orbiting satellite (17) through a satellite communication module (16), the lower orbiting satellite (17) transmits the data to a satellite communication module (18), and the satellite communication module (18) transmits the received data to an upper computer (19) for analysis and processing. The system for monitoring water content around the oil and gas pipeline in the freeze soil a