Submarine oil pipeline leakage system and method based on unmanned underwater vehicle

The invention discloses a submarine oil pipeline leakage system and method based on an unmanned underwater vehicle. The system comprises a detection subsystem based on the unmanned underwater vehicle and a detection subsystem based on an underwater robot. The detection subsystem based on the unmanned underwater vehicle comprises the unmanned underwater vehicle and a pipeline position detection module and an oil overflowing detection module which are arranged on the unmanned underwater vehicle and is used for implementing large-area fast inspection. The detection subsystem based on an underwater robot comprises the underwater robot, an umbilical cable winding and unwinding module, a precision pipeline position detection module and a precision oil overflowing detection module and is used for implementing pipeline position detection, highly precision positioning and precision detection of micro leakage, and the precision pipeline position detection module and the precision oil overflowing detection module are arranged on the underwater robot. The system is high in detection speed and low in cost, and the requirements on offshore oil production safety can be met.