Fluid leakage diagnosis device, fluid leakage diagnosis system, fluid leakage diagnosis method, and recording medium storing fluid leakage diagnosis program

A fluid leakage diagnosis method

• that is implemented by an information processing device, the fluid leakage diagnosis method comprising:
• using wave measurement information expressing a wave measured in a pipe to identify a position of an origin of the wave;
• using structural information of the pipe to detect a structural factor causing the wave at the position of the origin that has been identified;
• determining whether a time shift of the wave measurement information satisfies a condition;
• and
• diagnosing fluid leakage in the pipe based on a detection result relating to the structural factor and a determination result relating to the time shift.

A non-transitory computer-readable recording medium storing a fluid leakage diagnosis program for causing a computer to execute:

• an identification process of using wave measurement information expressing a wave measured in a pipe to identify a position of an origin of the wave;
• a detection process of using structural information of the pipe to detect a structural factor causing the wave at the position of the origin identified by the identification process;
• a determination process of determining whether a time shift of the wave measurement information satisfies a condition;
• and
• a diagnosis process of diagnosing fluid leakage in the pipe based on a detection result by the detection process and a determination result by the determination process.