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A Method for Prediction and Evaluation of Service Life of Computer Interlocking System

A technology of computer interlocking and service life, which is applied in general control systems, control/regulation systems, test/monitoring control systems, etc., can solve problems such as large deviations in life prediction results, concerns, and lack of control system structures, etc., to improve Operational Safety and Equipment ROI, Effects of Improved Accuracy

Inactive Publication Date: 2021-02-05
CHINA RAILWAYS CORPORATION +1
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Problems solved by technology

The method based on probability and statistics, due to some uncertain factors in the system, leads to a large deviation in the life prediction results; at this stage, the life prediction method based on information technology lacks attention to the structure of the control system, and is more common in technical systems in the aerospace field
The railway signal computer interlocking system has a unique hardware redundancy structure, which is quite different from the conventional industrial control system

Method used

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  • A Method for Prediction and Evaluation of Service Life of Computer Interlocking System
  • A Method for Prediction and Evaluation of Service Life of Computer Interlocking System
  • A Method for Prediction and Evaluation of Service Life of Computer Interlocking System

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specific example

[0056]Based on the failure data of a two-by-two-out-two computer interlocking system obtained from the site of a railway bureau in my country, the service life prediction evaluation is carried out. The system failure data collected from 2012 to 2016 are as follows:

[0057]

[0058]

[0059]Sort the data in the table according to the data constraint format of the present invention to obtain the input vector [x1, x2,...x23] of the life prediction evaluation neural network, and perform calculations. The life of the interlocking system components calculated by the network is as follows :

[0060] Failure data prediction index 2017 2018 2019 2020 2021 2022 2023 2024 y1

[0061]Use formulaCalculate the mean time between failure indicators of the computer interlocking system,

[0062] 2017 2018 2019 2020 2021 2022 2023 2024 MTBF4.46×105h

[0063]By the average remaining life of the system, that is, the average time between failures MTBF of the system, when the value does not meet the MTBF5When h is re...

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Abstract

The invention belongs to the technical field of rail traffic control operation and maintenance, and provides a method for predicting and evaluating the service life of a railway signal computer interlocking system based on a neural network. The present invention: first of all, aiming at the computer interlocking systems of the dual-computer hot standby type and the two-by-two-out type, respectively design a life prediction neural network structure model; secondly, by controlling the neuron transfer function and output of the life prediction neural network function, and the optimization of the width of the central neuron to improve the prediction accuracy; finally, based on the operating equipment failure data, the input vector format constraints of the life prediction neural network are performed to predict and evaluate the service life of the interlocking system. Through example verification, the results show that: compared with other methods, it is more in line with the actual operation of the interlocking system, with high prediction accuracy, which can effectively support the operation safety of the system and improve the return on investment of interlocking equipment.

Description

Technical field[0001]The invention belongs to the technical field of rail transit control, operation and maintenance, and relates to the life prediction evaluation of control equipment, in particular to the service life prediction evaluation of a railway signal computer interlocking system.Background technique[0002]The computer interlocking system is the core technical equipment of railway signal, which plays a key role in the production of railway transportation. Its main function is to control the operation and operation of trains (or shunting trains) at stations, and ensure that trains (or trains) Column) operation safety. At present, the computer interlocking used in my country's railways mainly includes two systems: dual machine hot standby and two by two out of two. At this stage, the life cycle management of computer interlocking systems in our country is not standardized enough and lacks scientific and reasonable basis. In 2009, the "Railway Signal Maintenance Regulations" i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02G06N3/04
CPCG05B23/0243G05B2219/24065G06N3/04
Inventor 周荣陈建译王海峰王韵琛
Owner CHINA RAILWAYS CORPORATION
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