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Condition Monitoring and Data Analysis of Level Crossings

10,000 3,000

Topic Description

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Summary
Level crossings are highly complex safety critical systems. Their correct operation and maintenance ensures the safety of road and rail users alike. A system implemented by Balfour Beatty Rail Technologies currently checks all aspects of railway infrastructure (except for that of level crossings) by analysing on track events. It stores statistics of train passages, and timings of various components, that when observed by Network Rail maintenance staff, can indicate possible errors occurring within the railway infrastructure being monitored.
This project aims to extend the system currently in use, to include the analysis of data received from level crossings

Table of Contents
1 Introduction…………………………………………………………………………………………..1
1.1 The Stakeholder………………………………………………………………………………………….1
1.2 Background to the Problem………………………………………………………………………….1
1.3 The Problem……………………………………………………………………………………………….2
1.4 The Approach……………………………………………………………………………………………..2
2 Project Management………………………………………………………………………………4
3 Specification………………………………………………………………………………………….6
4 General Level Crossing Modelling…………………………………………………………..7
4.1 Introduction to Level Crossings…………………………………………………………………….7
4.2 An Overview of Automatic Half Barriers……………………………………………………….8
4.3 The General Model……………………………………………………………………………………..9
5 Specific Modelling of Bleasby AHB Level Crossing………………………………..10
5.1 A detailed description of the automatic half barrier sequence………………………….10
5.2 A description of a possible AHB monitoring system……………………………………..16
5.3 Further Justification for Project…………………………………………………………………..17
5.4 The Data…………………………………………………………………………………………………..17
5.5 Introduction to Bleasby AHB……………………………………………………………………..18
5.6 Finite State Automata………………………………………………………………………………..18
5.7 Augmented Transition Network Grammars…………………………………………………..19
5.8 Turing Machine…………………………………………………………………………………………19
5.9 Petri Net…………………………………………………………………………………………………..20
5.10 The Models…………………………………………………………………………………………….20
5.11 The Specific Model………………………………………………………………………………….21
6 Design of Module…………………………………………………………………………………26
6.1 The Existing System………………………………………………………………………………….26
6.2 Microsoft Access………………………………………………………………………………………27
6.3 Microsoft Visual Basic………………………………………………………………………………27
6.3.1 VB SQL……………………………………………………………………………………….27
6.3.2 ADO Recordsets…………………………………………………………………………..28
6.4 Design Approach………………………………………………………………………………………28
6.5 The Design……………………………………………………………………………………………….30
7 Implementation of Module……………………………………………………………………32
7.1 Creation of tblStLCComps…………………………………………………………………………32
7.2 modImportTestData…………………………………………………………………………………..33
7.3 ITERATION 1………………………………………………………………………………………….33
7.3.1 Single Event Processing………………………………………………………………..33
7.3.2 Single Direction Processing………………………………………………………….33
1.1.1 ATC Processing…………………………………………………………………………..34
7.3.3 Signaller Indication Processing……………………………………………………..34
7.3.4 Boom Move Processing…………………………………………………………………34
7.4 ITERATION 2………………………………………………………………………………………….35
7.4.1 Bi-Directional Processing…………………………………………………………….35
III
7.4.2 ATC Processing Iteration 2…………………………………………………………..36
7.4.3 Red Lights Processing, Boom Move Processing and Barrier Signal Processing…………………………………………………………………………………………..36
7.5 Alarm Definitions and Types………………………………………………………………………36
8 Evaluation of Module……………………………………………………………………………38
8.1 Functional Testing – Reliability…………………………………………………………………..38
8.2 Maintainability………………………………………………………………………………………….39
8.3 Efficiency – Speed……………………………………………………………………………………..40
8.4 Flexibility…………………………………………………………………………………………………40
8.5 Suitability of approach……………………………………………………………………………….40
8.6 Future Developments…………………………………………………………………………………41
Bibliography…………………………………………………………………………………………..42
Appendices…………………………………………………………………………………………….44
Appendix A – A Personal Reflection…………………………………………………………………44
Appendix B – Project Schedules……………………………………………………………………….46
Appendix C – Specification……………………………………………………………………………..47
Appendix D – General Model…………………………………………………………………………..54
Appendix E – Specific Model…………………………………………………………………………..59
Appendix F – UML Model………………………………………………………………………………64
Appendix G – Design of Module………………………………………………………………………64
Appendix H – Events Being Monitored……………………………………………………………..72
Appendix I – Equipment Types………………………………………………………………………..74
Appendix J – Tables to hold Statistics……………………………………………………………….75
Appendix K – Testing Document……………………………………………………………………..77
Appendix L – Maintenance Document………………………………………………………………83
Appendix M – Installation of System…..

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