Method for deciding urban rail transit kilometer posts

Abstract

The invention discloses a method for deciding urban rail transit kilometer posts. The method includes creating basic data files with the route station kilometer posts and station-to-station distances; measuring the running distances of a train away from previous stops in real time; calculating the difference between k running distances, between two adjacent stops, of the train and the continuous k station-to-station distances in the basic data files by the aid of an annular sliding search matching method so as to determine whether the difference satisfies a specified error range or not, and determining k matched continuous stations; acquiring the sum of the current running distance of the train away from the previous stop and the identified station kilometer posts of the previous stops to decide the kilometer posts of the real-time running of the train. The method has the advantages that the location kilometer posts where the urban rail transit train run can be quickly, accurately and automatically decided by the aid of the method without depending on any external conditions such as a train signal system and sensing devices on a route, and accordingly the fault location kilometer posts necessary for online monitoring steel rail faults from the operating train can be decided.

Description

technical field [0001] The invention relates to a calibration method for urban rail transit kilometers, in particular to an automatic calibration method for detecting and fault diagnosis technology for rail damage and corrugation of urban rail transit lines on operating trains , belonging to the technical field of fault diagnosis. Background technique [0002] The station spacing of urban rail transit lines is relatively short, and the train operation density is high. The length of an urban rail transit line is as short as ten kilometers, and as long as tens of kilometers, with dozens of station sections, and the allowable window for track maintenance is short. With a large amount of tasks, how to quickly and effectively find the damaged points in the line or the section where there is abnormal corrugation and other deteriorating working conditions, and accurately give the mileage mark of the damaged point or the deteriorating working condition section, so as to carry out ta...

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Problems solved by technology

[0006] Invention patent application "A Fault Position Calibration Device and Calibration Method for On-line Rail Fracture Vehicle Monitoring" (Application No.: 2012105577567), which needs to rely on the GPS signal receiver to realize the correspondence between the geographic location and the kilometer mark, and in urban rail transit lines In the case of most of the tunnels, GPS signals cannot be received, so this method is not applicable in urban rail transit

[0007] Invention patent application "A mileage positioning method based on high-speed rail linear signs, satellites, and odometers" (application number: 2012102640889), which is carried out after data collection by three external devices: odometers, satellites, and linear signs on high-speed rail lines Calculation is used to achieve kilometer calibration, and the high-resolution photoelectric odometer needs to be installed on the outside of a certain wheel axle of the rail car, the satellite receiver also needs to be installed on the rail car, the high-speed rail linear sign needs to be installed on the line, and the three external input conditions are lacking. One cannot, so the limitation of this method is that it relies too much on external equipment, it can only be used on special track inspection vehicles, and it cannot be applied to urban rail transit operating trains whose lines are mostly tunnels

Unfortunately, because the system does not have the function of rail transit kilometer calibration, its application is limited, and there is a need to supplement this function

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