Title:
STATE MONITORING DEVICE AND STATE MONITORING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/065952
Kind Code:
A1
Abstract:
The present invention estimates a vibration source producing abnormal vibration irrespective of the periodicity of the abnormal vibration. A state monitoring device according to the present invention comprises a storage unit and a control unit. A plurality of vibration data, which are respectively measured by a plurality of acceleration sensors disposed in a to-be-monitored area, are held in the storage unit. The control unit specifies a reference time (t1) in which any of the plurality of vibration data exceeds a threshold value. The plurality of vibration data and information pertaining to the plurality of acceleration sensors are held in association with each other in the storage unit. In a first reference time interval (Δti1) including the reference time (t1), the control unit specifies a first acceleration sensor that measured first vibration data (E1), from among the plurality of vibration data, that most recently exceeded the threshold value.
Inventors:
SAITOU HITOSHI (JP)
HATAKEYAMA WATARU (JP)
HATAKEYAMA WATARU (JP)
Application Number:
PCT/JP2018/036218
Publication Date:
April 04, 2019
Filing Date:
September 28, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01H17/00; F03D17/00; G01M99/00
Domestic Patent References:
| WO2016133100A1 | 2016-08-25 |
Foreign References:
| JPS542170A | 1979-01-09 | |||
| JP2005121639A | 2005-05-12 | |||
| JP2005315595A | 2005-11-10 | |||
| US20080069693A1 | 2008-03-20 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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