Infrastructure control

713 views

Published on

Discusses the fundamental control elements for critical national infrastructure

Published in: Business, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
713
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
15
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • This is the parlance of CPNT
  • Infrastructure control

    1. 1. Critical Infrastructure 2,, 2013 Slide 1 Critical infrastructure: Infrastructure Control
    2. 2. Critical Infrastructure 2,, 2013 Slide 2 Infrastructure classes • Physical infrastructure – Physical facilities and assets such as pumping stations, pipelines, railways, roads, etc.
    3. 3. Critical Infrastructure 2,, 2013 Slide 3 Infrastructure classes • Digital infrastructure – Networks, software and physical facilities required for their operation, such as data centres
    4. 4. Critical Infrastructure 2,, 2013 Slide 4 Infrastructure classes • Organisational infrastructure – Organisations that provide emergency services, medical services, government and financial services
    5. 5. Critical Infrastructure 2,, 2013 Slide 5 Control Systems • IT is used for monitoring and controlling infrastructure in almost all industries in the developed world – Oil and Gas, Power Generation, Railways and Transmission, Water Management, Manufacturing, Production Plants
    6. 6. Critical Infrastructure 2,, 2013 Slide 6 © Alan Murray-Rust 2012
    7. 7. Critical Infrastructure 2,, 2013 Slide 7 © Remi Kaupp 2006
    8. 8. Critical Infrastructure 2,, 2013 Slide 8 Image credit: http://media.boingboing.net/wp-content/uploads/2012/08/ERCOT-CONTROL-ROOM-2.jpg System control centre monitors infrastructure state, reports problems and issues control commands
    9. 9. Critical Infrastructure 2,, 2013 Slide 9 Infrastructure control • Infrastructure equipment is usually controlled using special-purpose hardware and software • PLCs (Programmable Logic Controllers) are associated with specific components such as valves and switches
    10. 10. Critical Infrastructure 2,, 2013 Slide 10 Programmable Logic Controllers • Stand-alone units which are associated with a controlled element or a group of controlled elements
    11. 11. Critical Infrastructure 2,, 2013 Slide 11 Programmable Logic Controllers • PLCs usually have associated sensors that determine the state of the controlled element (so can detect whether a valve is open or closed) as well as sensors that sense whatever is being controlled (e.g. liquid flow)
    12. 12. Critical Infrastructure 2,, 2013 Slide 12 Programmable Logic Controllers • PLCs send signals to actuators associated with the controlled element e.g. to motors that can open or close a valve
    13. 13. Critical Infrastructure 2,, 2013 Slide 13 Infrastructure control elements PLC PLC To SCADA system Water pipeline Motorised valve Motorised valve Flow sensor
    14. 14. Critical Infrastructure 2,, 2013 Slide 14 PLCs • PLCs are often programmed using a simple graphical programming language called Ladder Logic • They are hardened – designed for use in hostile environments (heat, vibration, dampness, etc.) and with low power requirements
    15. 15. Critical Infrastructure 2,, 2013 Slide 15 © Bernd Stolte 2010
    16. 16. Critical Infrastructure 2,, 2013 Slide 16 Remote Terminal Units • When sensing is required, so-called Remote Terminal Units (RTUs) may be used which collect sensor data and relay it to the central control system
    17. 17. Critical Infrastructure 2,, 2013 Slide 17 SCADA • PLCs can act autonomously – e.g. to shut down an element but, more often are networked to a central control system that manages and controls all of the PLCs in the system. • The central system is usually called a SCADA (Supervisory Control and Data Acquisition) system.

    ×