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Title:
NOISE REMOVAL METHOD OF STATE MONITORING DEVICE, AND STATE MONITORING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/044955
Kind Code:
A1
Abstract:
A data operation unit of the state monitoring device according to the present invention executes a noise removal method on a measured waveform and removes impulse noise. The noise removal method comprises a step (S2) for determining a reference value (Y1) for noise determination from data for a waveform in a measurement period measured by a sensor, a step (S3) for including data for at least one waveform component of a noise waveform greater than or equal to the reference value (Y1) and determining a size (WS) of a processing window in a period shorter than the measurement period, and a step (S4) for generating replacement data (effective value RMS2) that replaces noise waveform data from a data group in the processing window and replacing the noise waveform data with the replacement data when there is noise waveform data in the processing window. Such processing makes it possible to reliably remove noise while suppressing adverse effects on state monitoring resulting from noise removal.

Inventors:
KATOU, Kouma (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
TSUTSUI, Hideyuki (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
Application Number:
JP2018/032069
Publication Date:
March 07, 2019
Filing Date:
August 30, 2018
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
G01N29/14; G01N29/44; H04B15/00
Foreign References:
JP2011154020A2011-08-11
JP2012147276A2012-08-02
JPH0443258U1992-04-13
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Festival Tower West, 2-4 Nakanoshima 3-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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