| CPC G01M 99/005 (2013.01) | 14 Claims |
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1. A synchronization device comprising:
machine data acquisition circuitry to acquire, as machine data, time-series information regarding driving of a machine that is information acquired at a time indicated by first time information;
measurement data acquisition circuitry to acquire, as measurement data, time-series information regarding a state of the machine that is information including a magnitude of a sound or vibration and acquired at a time indicated by second time information that is different from the first time information;
correlation calculation circuitry to calculate a correlation time difference that is a time difference when strength of correlation between an absolute value of the machine data and a frequency component of the measurement data is maximum on a basis of the machine data, the measurement data, and a time difference when any one of the machine data and the measurement data is staggered in a positive or negative direction of a time axis; and
synchronized data output circuitry to output, as synchronized machine data, the machine data synchronized with the measurement data on a basis of the correlation time difference, and to output, as synchronized measurement data, the measurement data synchronized with the machine data on a basis of the correlation time difference, wherein
the correlation calculation circuitry includes peak extraction circuitry to obtain a frequency at which a frequency spectrum of the measurement data peaks from the measurement data, and
the strength of correlation is calculated on a basis of a temporal change in a frequency component at which the frequency spectrum of the measurement data peaks, and the machine data.
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