Data processing device and method

Abstract

Provided is a technique capable of detecting a fluid leakage with a reduced influence of an environmental vibration. A data processing device that determines whether a fluid leaks from a pipeline network of the fluid based on a waveform of a vibration intensity measured from the pipeline network, the data processing device including: a memory configured to store a software program; and a processor configured to execute the software program. The processor acquires a plurality of pieces of waveform data of vibration intensities measured at different times from the pipeline network, calculates an evaluation value for evaluating how suitable or unsuitable the plurality of pieces of waveform data are for determining a presence or absence of a fluid leakage, selects waveform data to be used for determining a presence or absence of a fluid leakage from the plurality of pieces of waveform data based on the evaluation value, extracts a periodic characteristic from an autocorrelation coefficient of a vibration intensity of the selected waveform data, and determines whether the fluid leaks from the pipeline network based on a relationship between periodic characteristics of the selected waveform data.