SIGNAL ANALYSIS SYSTEM, METHOD AND PROGRAM

WIPO Patent Application WO/2019/163433

A1

[Problem] To provide a signal analysis system suitable for detecting a state of a vibration body. [Solution] According to the present invention, provided is a signal analysis system including: a signal sampling unit which samples, during a prescribed period, voltage values of a signal to be analyzed, and acquires time series data on the voltage values; a threshold voltage setting unit which creates a frequency distribution indicting the frequencies of appearance of positive voltage values composing the time series data, and sets a threshold voltage on the basis of a voltage value, the frequency of appearance of which is rapidly reduced; a peak time acquisition unit which compares each voltage value composing the time series data with the threshold voltage in time series order, and samples voltage values larger than the threshold voltage to thereby acquire, as a peak time, a time at which the maximum value is sampled among voltage values sampled during a subsequent first short period; a DFA target data generation unit which generates DFA target data on the basis of the peak time; and a DFA execution unit which executes a DFA on the basis of the DFA target data to acquire a scaling index.

YAZAWA TORU (JP)

PCT/JP2019/002723

August 29, 2019

January 28, 2019

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YAZAWA TORU (JP)
SHIMODA YUKIO (JP)
SYMPHODIA PHIL CO LTD (JP)

G01H17/00; G01M99/00

JP2016145763A	2016-08-12
JP2010184041A	2010-08-26
JP2016165383A	2016-09-15
JP2016014617A	2016-01-28

MAYAMA INTERNATIONAL PATENT OFFICE (JP)

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