US 2026/0227367 A1Published application

Condition monitoring system

AssigneeNtn Corporation

InventorsYota SHIMOYAMA, Takashi HASEBA

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Abstract

A condition monitoring system is provided which can be implemented as an inexpensive, small, and power-saving device with restricted computational resources and which can perform condition monitoring and diagnosis of a to-be-monitored apparatus with a relatively small amount of computation. Time-series data along time series is subdivided in a time direction, spectral data is calculated by fast Fourier transform for each piece of subdivision data obtained by subdividing the time-series data, at least one partial spectrum of a portion of bands is extracted from the spectral data and at least one amount of statistics of the at least one partial spectrum is calculated, and the at least one amount of statistics is arranged in a time series order of original pieces of the subdivision data to obtain the at least one piece of processed data.

Claims19

Dependent claims

A condition monitoring system comprising:

a measurement data processing unit configured to calculate at least one piece of processed data from measurement data,
the measurement data processing unit being configured to execute:
a subdivision step of subdividing time-series data along time series in a time direction, the time-series data being the measurement data or first processed data calculated from the measurement data;
an FFT step of calculating spectral data by fast Fourier transform for each piece of subdivision data obtained by subdividing the time-series data;
a statistical step of extracting at least one partial spectrum of a portion of bands from the spectral data, and calculating at least one amount of statistics of the at least one partial spectrum;
and
an integration step of arranging the at least one amount of statistics in a time series order of original pieces of the subdivision data to obtain the at least one piece of processed data.

4 more elements

Dependencies are inferred from the claim text.