Title:
ABRUPT ADVANCE POINT EXTRACTION PROCESSING METHOD AND ABRUPT ADVANCE POINT EXTRACTION PROCESSING SYSTEM OF WAVEFORM DATA
Document Type and Number:
Japanese Patent JP2018063225
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable track displacement advance calculation at a waveform level by automatically correcting positional deviation of high-frequent inspection data, and to extract only a point of track displacement advance.SOLUTION: An abrupt advance point extraction processing method for executing extraction processing of an abrupt advance point in waveform data acquired later from at least two pieces of waveform data, which have different in an acquisition period or acquisition time from each other, acquired by measuring a predetermined track inspection section includes a position correction step S102 for performing position correction between reference data which is waveform data having an older acquisition period or acquisition time than the other and correction object data which is waveform data having newer acquisition period or acquisition time than the other, a difference data computation step S105 for extracting a feature change point by obtaining difference data between the correction object data and the reference data for which position correction has been performed, at a waveform level and an abrupt advance point extraction step S106 for, if the feature change point is extracted in the difference data computation step S105, determining whether it is an abrupt advance or abnormality, or not.SELECTED DRAWING: Figure 2
Inventors:
TANAKA HIROBUMI
YAMAMOTO SHUHEI
MORI TADAO
YAMAMOTO SHUHEI
MORI TADAO
Application Number:
JP2016202862A
Publication Date:
April 19, 2018
Filing Date:
October 14, 2016
Export Citation:
Assignee:
RAILWAY TECHNICAL RES INST
JR SOKEN JOHO SYSTEM KK
JR SOKEN JOHO SYSTEM KK
International Classes:
G01B21/00
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Foreign References:
| WO2010110021A1 | 2010-09-30 |
Attorney, Agent or Firm:
Patent Business Corporation Intect International Patent Office
Yoshinori Ishibashi
Yoshinori Ishibashi