Track condition monitoring device, track condition monitoring system and track condition monitoring method

Abstract

A track condition monitoring device track condition monitors a state of a track on which a railroad car runs. The track condition monitoring device includes processing circuitry configured to acquire track displacement data which includes first data associated with second data, the first data indicating a position of the track displaced by a track displacement, and the second data indicating a longitudinal level of the track displacement at the position; and calculate an index value indicating the state of the track in an evaluation target section of the track based on the track displacement data, wherein the position is in the evaluation target section of the track.

1 . A track condition monitoring device monitoring a state of a track, the track condition monitoring device comprising:
 processing circuitry configured to
 acquire track displacement data which includes first data associated with second data, the first data indicating a position of the track displaced by a track displacement, and the second data indicating a longitudinal level of the track displacement at the position; and 
 calculate an index value indicating the state of the track in an evaluation target section of the track based on the track displacement data, wherein the position is in the evaluation target section of the track. 
   
     
     
         2 . The track condition monitoring device according to  claim 1 , wherein the processing circuitry calculates the index value by calculating a waveform length of the track displacement in the evaluation target section based on the track displacement data. 
     
     
         3 . The track condition monitoring device according to  claim 2 , wherein the processing circuitry calculates the index value by subtracting a first length of the track from the waveform length, the first length being a length of the track having no track displacement. 
     
     
         4 . The track condition monitoring device according to  claim 1 , wherein the processing circuitry is further configured to obtain a total sum of an absolute value of a change amount of the track in the evaluation target section based on the track displacement data. 
     
     
         5 . The track condition monitoring device according to  claim 1 , wherein
 the processing circuitry calculates a value, corresponding to a length of the track caused by the longitudinal level displacement of the track in the evaluation target section, as the index value.   
     
     
         6 . The track condition monitoring device according to  claim 1 , wherein the processing circuitry is further configured to determine whether consideration of maintenance of the track is necessary by comparing the index value with a preset reference value. 
     
     
         7 . The track condition monitoring device according to  claim 1 , further comprising:
 a display, wherein   the processing circuitry is further configured to
 generate, based on the index value, a track condition display image indicating a state of the track; and 
 control the display to display the track condition display image. 
   
     
     
         8 . The track condition monitoring device according to  claim 7 , wherein the track condition display image includes an image indicating a change of the index value with respect to an elapsed time. 
     
     
         9 . The track condition monitoring device according to  claim 7 , wherein the track condition display image includes an image in which the state of the track is associated with a route diagram of the track. 
     
     
         10 . The track condition monitoring device according to  claim 7 , wherein the track condition display image includes an image indicating maintenance suggestion information prompting, the maintenance suggestion information indicating whether maintenance is needed, and the maintenance suggestion information being based on the index value and a preset reference value. 
     
     
         11 . The track condition monitoring device according to  claim 7 , wherein
 the processing circuitry is further configured to predict the index value in a future period of time based on a change of the index value in a previous period of time, and   the track condition display image includes an image indicating prediction information of the index value in the future.   
     
     
         12 . The track condition monitoring device according to  claim 7 , wherein
 the processing circuitry is further configured to predict a maintenance consideration prediction time at which consideration of maintenance of the track in a future period of time is required, and   the track condition display image includes an image indicating the maintenance consideration prediction time.   
     
     
         13 . The track condition monitoring device according to  claim 1 , comprising:
 a storage storing plural pieces of track displacement data, each piece of track displacement data having been detected at a different time, wherein   the processing circuitry is further configured to calculate a plurality of index values based on the plural pieces of track displacement data.   
     
     
         14 . The track condition monitoring device according to  claim 1 , wherein the evaluation target section is a section of the track divided into a plurality of sections at regular intervals. 
     
     
         15 . A track condition monitoring system, comprising:
 the track condition monitoring device according to  claim 1 ;   a first sensor provided to a railroad car, the first sensor acquiring track position data that specifies a position of the track in a longitudinal direction; and   a second sensor provided to the railroad car, the second sensor acquiring a displacement position of the track caused by the track displacement.   
     
     
         16 . The track condition monitoring system according to  claim 15 , wherein
 the first sensor transmits the track position data to the track condition monitoring device, and   the second sensor transmits the displacement position to the track condition monitoring device.   
     
     
         17 . A track condition monitoring method of monitoring a state of a track, the track condition monitoring method comprising:
 acquiring track displacement data which includes first data associated with second data, the first data indicating a position of the track displaced by track displacement, and the second data indicating a longitudinal direction of the track displacement at the position; and   calculating an index value indicating the state of the track in an evaluation target section of the track based on the track displacement data, wherein   the position is in the evaluation target section of the track.   
     
     
         18 . The track condition monitoring method according to  claim 17 , wherein the calculating the index value includes calculating a waveform length of the track displacement in the evaluation target section based on the track displacement data. 
     
     
         19 . The track condition monitoring method according to  claim 17 , further comprising:
 determining whether consideration of maintenance of the track is necessary based on the index value and a preset reference value; and   displaying, via a display when the determining indicates that consideration of maintenance is necessary, maintenance suggestion information suggesting the consideration of maintenance.   
     
     
         20 . The track condition monitoring method according to  claim 17 , wherein
 the calculating includes calculating a plurality of index values based on plural pieces of track displacement data, wherein each piece of track displacement data is detected at a different time, the plurality of index values including the index value;   predicting a future index value at a future time based on the plurality of index values; and   displaying information based on the future index value.