Post on 29-May-2018
SYSTEMS ENGINEERING FRAMEWORK
FOR RAILWAY CONTROL & SAFETY
SYSTEMSKarl M King
Head of Train Control Systems Technology, Mott
MacDonald
Part-time PhD Student, University of Birmingham
PROBLEM DEFINITION
The same framework for signalling projects has been used for many years with little to no change
We are now in an environment of rapidly advancing technology providing New functionality New operating concepts
There is a danger that we’re using processes that are no longer fit for purpose
Therefore developing a systems-centric framework for the development of all systems
Systems Engineering Framework for Railway Control & Safety Systems
CURRENT UK TRAIN CONTROL INITIATIVES
Traffic Management System (TMS)
European Train Control System (ETCS)
Driver Advisory System (DAS)
Systems Engineering Framework for Railway Control & Safety Systems
CURRENT UK TRAIN CONTROL INITIATIVES
TMS
ETCS DAS
Danger of projects running in isolated ‘silos’
Which could result in overlaps of scope and functionality
DEVELOPING SYSTEM
Systems Engineering Framework for Railway Control & Safety Systems
Industry Needs
System Requirements
Sub- System Requirements
Component Requirements
Development
Component Testing
Sub-System Testing
System Testing
DELIVERING SYSTEM
Systems Engineering Framework for Railway Control & Safety Systems
Business NeedsConcept of Operations
Functional Requirements
Sub-System Requirements
Sub-System Requirements
Design & Implementation
Simulation
Factory Testing
Site Testing
Acceptance for Operation
COMPLETE PROCESS (W-CYCLE)
Systems Engineering Framework for Railway Control & Safety Systems
REQUIREMENTS OF AN RCS SYSTEM
1) Ensure safety of trains
2) Route trains efficiently
3) Optimise performance of trains
Systems Engineering Framework for Railway Control & Safety Systems
REQUIREMENTS OF AN RCS SYSTEM
Route trains efficiently
Optimise performance of trains
Ensure safety of trains
Line Controller
Train Operator
Train
Systems Engineering Framework for Railway Control & Safety Systems
Control Centre
Signalling
Route Control
Layer
Safety &
Protection Layer
Train Control
RCS SYSTEM – FUNCTIONS
Automatic Train OperationDriver Machine InterfaceDriver Assistance System
InterlockingTrain DetectionPoints & Level Crossing Detection & ControlAutomatic Train Protection
Operator TerminalControl ServerAutomatic Train SupervisionAutomatic Route Setting
Systems Engineering Framework for Railway Control & Safety Systems
Line Controller
Train Operator
Train
Control Centre
Signalling
Route Control
Layer
Safety &
Protection Layer
Train Control
RCS SYSTEM – MAINLINE
Control Centre
Signalling
Train
Line Controller
Train Operator
Route Control
Layer
Safety &
Protection Layer
Train Control
Layer
ETCS
DAS
TMS
Systems Engineering Framework for Railway Control & Safety Systems
RCS SYSTEM – CBTC
Control Centre
Signalling
Train
Line Controller
Train Operator
Route Control
Layer
Safety &
Protection Layer
Train Control
Layer
ATP
ATO
ATS
Systems Engineering Framework for Railway Control & Safety Systems
SO WHAT?
Using this model we now have Interchangeable function blocks Clearly Defined Interfaces
This enables clear division between sub-system and project responsibilities
Systems Engineering Framework for Railway Control & Safety Systems
COMPLETE PROCESS (W-CYCLE)
Systems Engineering Framework for Railway Control & Safety Systems
TYPICAL PROJECT STRUCTURES 1
PROJECT MANAGEMENT LED
Advantages:
Simple Structure
Delivery Focussed
Disadvantages:
Can be a lack of technical direction
Technical quality can be sacrificed for programme delivery
Requirements capture and control difficult
Systems Engineering Framework for Railway Control & Safety Systems
Project Director
Project Manager
System Engineers
Design Engineers
TYPICAL PROJECT STRUCTURES 2
ENGINEERING LED
Advantages:
More focus on technical quality
Better requirements capture
Disadvantages:
Control of requirements difficult
Scope Creep
Cost and programme overrun
Systems Engineering Framework for Railway Control & Safety Systems
Project Director
Project Manager
System Engineers
Design Engineers
Engineering Manager
KEY RESPONSIBILITIES
Programme Overall project delivery including Contract Performance Requirements Budget
System Development System meets Operational, Maintenance & Performance Requirements Systems Integration
Design Layout Design Safety & Integrity
Systems Engineering Framework for Railway Control & Safety Systems
PROPOSED SYSTEM-CENTRIC STRUCTURE
Systems Engineering Framework for Railway Control & Safety Systems
Programme Manager
Delivery Managers
System Integration Engineers
Design AuthorityManager
Systems Engineering
Manager
Project Manager
Discipline Engineers
Delivery Engineers
MaintainersOperators
FURTHER WORK
Modelling of RCS Systems
Investigating Delivery in other industries Aviation Nuclear Oil & Gas
Case Studies of example projects
Systems Engineering Framework for Railway Control & Safety Systems
THANK YOU