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Outline Of Presentation

The development & integration of a Real-Time X-Ray image transfer system over a wireless network Final Year Project Capt David Clarke. Outline Of Presentation. Background to Army Ordnance Corps and their roles Allen-Vanguard ROV What is COFDM? X-Ray [Non-destructive testing] Project

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Outline Of Presentation

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  1. The development & integration of a Real-Time X-Ray image transfer system over a wireless networkFinal Year ProjectCapt David Clarke

  2. Outline Of Presentation • Background to Army Ordnance Corps and their roles • Allen-Vanguard ROV • What is COFDM? • X-Ray [Non-destructive testing] • Project • Summary

  3. Army Ordnance Corps • The Ordnance Corps provide the only Explosive Ordnance Disposal service within the state • Must keep abreast of current international terrorist devices • Training constantly with latest equipment • Serve overseas with every Battalion • Also responsible for equipment , clothing, food, weapons, ammunition procurement for entire DF

  4. Army Ordnance Corps • EOD Teams • Ordnance School in Curragh Camp • 24hr on call to Garda Siochana • Using the Allen-Vanguard ROV for Bomb Disposal • Has changed from Analogue to Digital in last 18 months • Ordnance Corps constantly upgrade the Hobo robot as general robot technology in the world is not mature enough

  5. Allen-Vanguard ROV • Allen-Vanguard are leading company in the world with respect to counter IED and CBRN technology • The HOBO is a sophisticated large bomb disposal robot constructed from tough titanium with heavy lifting capability.  • Has been upgraded a lot in last few years • Command Console uses a briefcase controller [touch screen laptop]

  6. COFDM • Coded Orthogonal Frequency Division Multiplexing • Predominantly used in Europe and is governed by the Digital Video Broadcasting set of Standards • Resistant to multi-path effects • Scheme that divides a single digital signal across 1,000 or more signal carriers simultaneously, the signals are sent at right angles to each other • Popular scheme for Wideband Digital Communication

  7. Advantages of COFDM • Can easily adapt to severe channel conditions without complex equalization • Robust against narrow-band co-channel interference • Robust against Intersymbol Interference (ISI) and fading caused by multipath propagation • Efficient Implementation using FFT.

  8. Disadvantages of COFDM • High peak to average power ratio, which requires linear transmitter circuitry • This results in poor power efficiency • Sensitive to the Doppler Shift • Sensitive to Frequency Synchronisation Problems

  9. Non-Destructive Testing [X-RAY] • Obviously an EOD team require x-ray technology • Vidisco are the leading company in X-Ray inspection systems • Amorphous-Silicon Flat Panel Digital Radiography • Fast Set-up and image can be retrieved in milliseconds • Average size of image is 22 x 21 cm, file size approx 5MB [fox-Rayzor system] • Hope to take this COTS [commercial off the shelf] product and improve it for DF needs

  10. Example of X-Ray Image

  11. Project • Enable an x-ray to be sent from the source to a laptop or control unit wirelessly using COFDM • At present the x-ray can only be done manually • The x-ray should be able to work manually and remotely • COFDM link will allow this to be done at extended distances and be much more reliable especially in built-up areas • Review of Non-destructive testing can also be undertaken • The milestones of project have yet to be decided on

  12. Summary • Army Ordnance Corps, HOBO robot, COFDM • Non-destructive testing, Requirements of DF • Very interesting project • Co-Supervisor Comdt Brian Hughes • Commercial/Military Sensitivity • If successful the system could be applied in an IEDD robot • Career prospects - as it is a Corps I would love to work in • Ordnance YOs Course - 2009/2010

  13. Thank you for your attention

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