Title:
DISCONNECTION DETECTION METHOD AND DISCONNECTION DETECTION DEVICE
Document Type and Number:
Japanese Patent JP2023044389
Kind Code:
A
Abstract:
To provide a disconnection detection method and a disconnection detection device that can detect with high sensitivity that disconnection has occurred in a conductor.SOLUTION: A method for detecting disconnection of strands of a cable 10 having a conductor 11a composed of a stranded conductor obtained by twisting the plurality of strands, includes: making the cable 10 into a state of being bent in a U-shape, and performing a U-shape bending motion of periodically sliding one end of the cable 10 along a cable longitudinal direction of the one end with a predetermined stroke; measuring a resistance value of the conductor 11a, which changes in time series due to the U-shape bending motion; using a frequency corresponding to a cycle of the U-shape bending motion as an operating frequency, and extracting a resistance value fluctuation component of the operating frequency included in the time-series change in the resistance value of the conductor 11a; and detecting disconnection of the strands based on magnitude of the extracted resistance value fluctuation component of the operating frequency.SELECTED DRAWING: Figure 1
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Inventors:
KATO AYANO
FUKASAKU IZUMI
NONEN HIDEKI
IMAI NORIYUKI
SATO TAKAHIRO
FUKASAKU IZUMI
NONEN HIDEKI
IMAI NORIYUKI
SATO TAKAHIRO
Application Number:
JP2021152403A
Publication Date:
March 30, 2023
Filing Date:
September 17, 2021
Export Citation:
Assignee:
PROTERIAL LTD
International Classes:
G01R31/54; G01R31/50; G01R31/58
Domestic Patent References:
| JP2012068171A | 2012-04-05 | |||
| JP2014233763A | 2014-12-15 | |||
| JP2018115992A | 2018-07-26 | |||
| JPH02198792A | 1990-08-07 |
Foreign References:
| US20040183544A1 | 2004-09-23 | |||
| US6230109B1 | 2001-05-08 |
Attorney, Agent or Firm:
Hirata International Patent Office