Fuzzy rough set and decision tree-based track circuit red light strip fault positioning method

Abstract

The invention discloses a fuzzy rough set and decision tree-based track circuit red light strip fault positioning method. The method mainly comprises the following steps of: 1) establishing an initial decision table; 2) carrying out fuzzy discretization on continuous fault feature attributes to establish a fuzzy decision table; 3) inputting fault sample training data to obtain a reduced decision table; 4) establishing a diagnosis decision tree model; 5) inputting measured data into the diagnosis decision tree model, carrying out calculation to obtain a fault diagnosis result, inputting the measured data into a diagnosis positioning decision tree model, carrying out preliminary judgement to obtain a fault positioning result, judging faults of specific equipment by combining expert experiences, and giving corresponding fault maintenance suggestions. The method can rapidly and correctly position fault points of uninsulated frequency shift track circuit red light strip faults, greatly reduce the blindness and complexity of fault diagnosis, have relatively good rule explanation and relatively good robustness, improve the fault positioning speed and correctness and provide a new fault positioning technological means for intelligent fault diagnosis of track circuits.

Description

technical field [0001] The present invention relates to the field of fault handling of railway signal equipment, and relates to a ZPW-2000A type non-insulated track circuit fault diagnosis method, specifically a ZPW-2000A type non-insulated frequency-shifting track based on fuzzy rough sets and decision trees Circuit red light with fault intelligent positioning method. technical background [0002] Track circuit is an important basic equipment of modern high-speed railway signaling system. It is used to monitor track occupancy and transmit train operation control information to ensure train operation safety. It is the key maintenance object of the electric department. At present, the ZPW-2000A non-insulated frequency-shifting track circuit is widely used in passenger dedicated lines and high-speed railways in my country due to its strong anti-interference ability, long transmission length, high transmission safety, and easy traction return, and has been established as a The ...

AI Technical Summary

Problems solved by technology

However, due to the complexity and uncertainty between the fault symptoms, fault modes and fault mechanism of the track circuit, a single diagnostic method cannot meet the requirements of track circuit fault diagnosis.

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