Title:
RAIL INSPECTION SYSTEM
Document Type and Number:
Japanese Patent JP2018100942
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rail inspection system capable of precisely detecting a defect on a railway rail.SOLUTION: The rail inspection system includes: a sensor unit group (21) in which sensor units (21-1 to 21-N) including plural reception coils (6-1 to 6-N) and plural first oscillation coils (5A-1 to 5A-N) corresponding to the reception coils and second oscillation coils (5B-1 to 5B-N), which are arranged in a line parallel in width direction of a pair of railroad rails (100) as an inspection object; an oscillation part (33) that supplies an oscillation signal to each of the first oscillation coil and the second oscillation coil; and a detection unit group (34) which has plural detection parts (34-1 to 34-N) for detecting a first inspection signal (X) corresponding to a first phase (0°) of an output signal and a second inspection signal (Y) corresponding to a second phase (90°) of the output signal with respect to the output signals which are output from each of the reception coils when the sensor unit group moves in a direction the railroad rails are laid.SELECTED DRAWING: Figure 5
Inventors:
KAWABATA RYUZO
KANDORI AKIHIKO
SUZUKI HIROSHI
YAMAMOTO KENJI
KANDORI AKIHIKO
SUZUKI HIROSHI
YAMAMOTO KENJI
Application Number:
JP2016248281A
Publication Date:
June 28, 2018
Filing Date:
December 21, 2016
Export Citation:
Assignee:
HITACHI HIGH TECH FINE SYSTEMS CORP
International Classes:
G01N27/82
Domestic Patent References:
| JP2006226884A | 2006-08-31 | |||
| JP2014102197A | 2014-06-05 | |||
| JP2003050234A | 2003-02-21 | |||
| JPH08261991A | 1996-10-11 | |||
| JP2014157078A | 2014-08-28 | |||
| JPS597940B2 | 1984-02-21 | |||
| JP2017088411A | 2017-05-25 | |||
| JP2011196863A | 2011-10-06 |
Foreign References:
| US20130113472A1 | 2013-05-09 | |||
| WO2017006589A1 | 2017-01-12 |
Attorney, Agent or Firm:
Isono International Patent and Trademark Office