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Track circuit fault precursor discovery method based on small fluctuation detection

A technology of track circuit and discovery method, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve research and other problems, and achieve the effect of simple model, fast inspection speed and fast classification speed

Pending Publication Date: 2019-12-17
SHANGHAI TIEDA ELECTRONICS & INFORMATION TECH CO LTD
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  • Track circuit fault precursor discovery method based on small fluctuation detection
  • Track circuit fault precursor discovery method based on small fluctuation detection
  • Track circuit fault precursor discovery method based on small fluctuation detection

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0042] The present invention proposes a detection method for track circuit fault precursors based on small fluctuation detection, figure 1 Shown is a flow chart of the identification process (ie the following steps S5 - S9 ) in the method for locating and identifying abnormal events. figure 2Shown is the sliding window schematic of this small fluctuation detection method. The method is based on the sliding variance method to detect small fluctuations in monitoring data. Then through the sorting of abnormal event categories, the extraction of fluctuation characteristic values, the construction of decision tree classification model, the output of abnormal event location results, etc., comprehensive analysis is carried out to realize the location and judgment of abnormal events under small fluctuations. In this embodiment, the ZPW-2000A non-ins...

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Abstract

The invention discloses a track circuit fault precursor discovery method based on small fluctuation detection, and the method comprises the following steps: S1, selecting m monitoring data points as data windows, and recording the variance value of each data window; S2, obtaining a variance sequence in a period of a normal working state, and extracting a variance threshold from the variance sequence to detect abnormal small-amplitude data fluctuation; and S3, summarizing the abnormal events under the condition of small-amplitude fluctuation on site into n types, wherein n is an integer greaterthan 1; and S4, extracting t fluctuation characteristic values capable of covering all types of abnormal events to serve as characteristic attributes for judging the fault mode. Wherein t is an integer greater than 1; and S5, on the basis of the decision tree classification model, carrying out real-time classification on the detected monitoring data under the abnormal small-amplitude fluctuation,and identifying the category of the abnormal event. The method is high in recognition accuracy, is quick, simple and convenient in detection of abnormal small-amplitude fluctuation, and is suitable for a maintenance site.

Description

technical field [0001] The invention belongs to the technical field of safety engineering, and relates to a track circuit fault precursor discovery technology, including a track circuit fault precursor discovery method based on small fluctuation detection. Background technique [0002] my country's railway transportation continues to develop in the direction of higher speed, higher density and heavy load, and the train operation control system is gradually developing in the direction of electronic, intelligent and complex. As one of the extremely important key safety infrastructure equipment in the train control system, the track circuit plays the role of monitoring the train occupancy of the track section and detecting the integrity of the train. As track circuits become more intelligent, faults occur more frequently. If faults are not detected and dealt with in time, serious consequences may occur. ZPW-2000A track circuit is widely used in my country's high-speed railwa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62
CPCG06F18/24323G06F18/214
Inventor 李永燕杨云国张立都赵华北史良华
Owner SHANGHAI TIEDA ELECTRONICS & INFORMATION TECH CO LTD
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