Fuel gas pipeline safety early-warning system and method thereof

The invention relates to the field of fuel gas pipeline monitoring, in particular to a fuel gas pipeline safety early-warning system which comprises a main station system and a substation system. The main station system comprises a data processing system and a waveform display terminal connected with each other; and the substation system comprises a data acquisition system; and the data acquisition system is connected with the data processing system. The data processing system comprises a sonic wave sensing part, a pressure sensor and a gas detection sensor; and the sonic wave sensing part comprises a sonic wave sensor and a subsonic wave sensor. According to the fuel gas pipeline safety early-warning system provided by the invention, by utilizing the combination of multiple ways of sonic wave sensing and pressure and gas sensing, whether leakage occurs or not, the type of the leaked gas and the position information of leakage occurrence can be accurately and timely judged, so that an accurate judgement basis