Title:
VIBRATION DETECTION DEVICE, ABNORMALITY DETECTION ASSISTANCE SYSTEM, AND VIBRATION DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/057364
Kind Code:
A1
Abstract:
This vibration detection device 2 comprises a vibration detection unit 21 that detects vibration generated at a rolling bearing B and converts the vibration into an analog signal A, and a sampling unit 22 that samples the analog signal A and converts the analog signal A into a digital signal D. When damage has occurred in the rolling bearing B, the vibration has a repeating unit A1 that is repeated during a predetermined repeating period Tr, the repeating unit A1 including a first vibration segment Z1 that vibrates at a predetermined first frequency F1 and a second segment Z2 that continues after the first vibration segment Z1. The sampling unit 22 samples the analog signal at a sampling frequency lower than two times the first frequency.
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Inventors:
SUZUKI SHOJI (JP)
NAKAYAMA SHINJI (JP)
NAKAYAMA SHINJI (JP)
Application Number:
PCT/JP2022/034065
Publication Date:
March 21, 2024
Filing Date:
September 12, 2022
Export Citation:
Assignee:
NSXE CO LTD (JP)
International Classes:
F16C19/52; G01H17/00; G01M13/045
Foreign References:
| JP2021071354A | 2021-05-06 | |||
| JPH04194412A | 1992-07-14 |
Attorney, Agent or Firm:
YANAGINO Yoshihide et al. (JP)
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