Water quantity metering method and water quantity metering system for remote water meter of Internet of Things

The invention provides a water quantity metering method and a water quantity metering system of an internet of things remote water meter, and belongs to the technical field of safety monitoring, the method comprises the following steps: collecting a sound wave signal at each preset position of a water delivery pipeline for signal decomposition to obtain a corresponding oscillation component; processing based on the oscillation component of each sound wave signal to obtain effective signal components corresponding to all the sound wave signals; judging whether leakage occurs based on the waveform of the effective signal component; calculating a water pipe leakage position based on the effective signal components of the head and tail ends of the water pipe; based on the water flows at different preset positions in the water conveying pipeline, obtaining the leakage water quantity of the leakage position of the water conveying pipeline; and correcting the detection value of the remote water meter of the internet