Civilex Presentation Laser Scanning And Gpr March 2009 Ices


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Civilex Presentation Laser Scanning And Gpr March 2009 Ices

  1. 1. Laser Scanning Surveying and Ground Penetrating Radar – The Full Three Dimensional Picture Above and Below Ground
  2. 2. CIVILEX 2009 <ul><li>Mark Hudson, Director, Coastway, FInstCES MRICS MIS BTS </li></ul><ul><li>Jeff Hott, Laser Scanning & Survey Manager, Coastway, BSc </li></ul><ul><li>Dr James Hodgson, Senior Geophysicist, Minerex, Phd BSc </li></ul>
  3. 3. Laser Scanning Surveying & Ground Penetrating Radar The full 3 dimensional picture - above and below ground   <ul><li>Bring the added deliverable benefits of surface topographical laser scanning to the underground world of utilities </li></ul><ul><li>Surface laser scanning </li></ul><ul><li>Ground Penetrating Radar </li></ul><ul><li>2D to 3D </li></ul><ul><li>Sub-surface laser scanning </li></ul><ul><li>The full picture - 3D model deliverable in 'real co-ordinates' </li></ul>
  4. 4. Coastway Ltd. <ul><li>Coastway are the leading Geospatial Engineering surveying company in Ireland covering the following sectors : </li></ul><ul><li>Geospatial Engineering </li></ul><ul><li>High Definition Laser Scanning </li></ul><ul><li>Structural Monitoring </li></ul><ul><li>Environmental Monitoring </li></ul><ul><li>Ground Penetrating Radar </li></ul><ul><li>3D Modelling & Visualisation </li></ul><ul><li>Minerex are leading Ground Penetrating Radar geophysicists </li></ul>
  5. 5. Minerex Geophysics Ltd. <ul><li>Minerex Geophysics Ltd. are a specialist geophysical and utility mapping consultancy. Our experienced geophysical staff have over 20 years experience in all aspects of geophysical surveying and consultancy. </li></ul><ul><li>Geophysical Services </li></ul><ul><li>Consulting </li></ul><ul><li>Surveying </li></ul><ul><li>Data Processing </li></ul><ul><li>Interpretation </li></ul><ul><li>Reporting </li></ul><ul><li>Project Management </li></ul><ul><li>Dr. James A. Hodgson </li></ul><ul><li>Unit F4, Maynooth Business Campus, </li></ul><ul><li>Maynooth, Co. Kildare, </li></ul><ul><li>Ireland </li></ul><ul><li>TEL:  01 6510030  </li></ul><ul><li>FAX: 01 6510033 </li></ul><ul><li>e-mail: [email_address] </li></ul>
  6. 6. Ground Penetrating Radar <ul><li>GPR is an electromagnetic (EM) geophysical method which is non-destructive </li></ul><ul><li>EM energy is transmitting into the ground and a receiver measures energy that is reflected back to the surface from a buried body or interface </li></ul><ul><li>Very useful for locating buried object – pipes, ducts, watermains, gas lines etc and defining sub-surface structures. </li></ul>
  7. 7. GPR Principle of Operation
  8. 8. GPR 2D Example section Top 400 MHz, Bottom 900 MHz
  9. 9. GPR Equipment <ul><li>Minerex Geophysics Ltd operates a GSSI SIR 3000 system </li></ul><ul><li>400MHz Antenna in hand towed configuration </li></ul><ul><li>In average Irish soil conditions penetrates to 1 – 1.5m, possibly 2.5 – 3m </li></ul>
  10. 10. GPR Equipment <ul><li>Minerex Geophysics Ltd operates a GSSI SIR 3000 system </li></ul><ul><li>270MHz antenna ~ 4- 5m penetration </li></ul><ul><li>100 MHz 6-9m penetration </li></ul>
  11. 11. GPR Grids
  12. 12. GPR – Geological Mapping
  13. 13. GPR – Cavity/Void Detection
  14. 14. GPR – Basements/Coal Stores
  15. 15. GPR 3D Depth Slice GPR data collected in a series of profiles / grid data can be processed as a series of depth slices or as a 3D data Cube.
  16. 16. GPR – Utility Map
  17. 17. 3D GPR CAD Image
  18. 18. Laser Scanning <ul><li>Laser Scanning is a method of collecting large numbers of survey points in a relatively short space of time. The principle of measurement is the same as conventional EDM total station measurement technology in that the laser scanner emits a laser beam and then measures the angle and distance of the return laser beam by extremely accurately measuring of the time of the return laser beam. However a laser scanner can capture data at up to 500,000 points/second as opposed to single point measurements with a reflectorless total station. </li></ul><ul><li>  </li></ul><ul><li>High definition 3D Laser Scanning is unparalleled in the capture of large numbers of points in a grid system that can be defined by the operator. The density of this point grid allows the analysis of deflection and movement in areas not possible to be determined by conventional methods. </li></ul><ul><li>  </li></ul><ul><li>It is possible to create a surface model of the point cloud data that will accurately reflect the surface of the scanned area. Changes in the surface can be measured, analysed and compared to previous surveys and relative to a specific plane. </li></ul>
  19. 19. HDS Laser Scanning Applications Fast, Accurate, Detailed Geometry Capture of Sites, Scene and Structures <ul><li> Building & Heritage </li></ul><ul><li>As-built 3D models </li></ul><ul><li>As-built 2D drawings </li></ul><ul><li>Full colour visualisation </li></ul><ul><li>Forensics  </li></ul><ul><li>Crash investigation </li></ul><ul><li>Collapse analysis </li></ul><ul><li>Security planning </li></ul><ul><li> Civil & Survey </li></ul><ul><li>Topographic road, rail surveys </li></ul><ul><li>Volumes </li></ul><ul><li>Tunnel surveys </li></ul><ul><li>Industrial Plant  </li></ul><ul><li>Intelligent 3D CAD as-builts </li></ul><ul><li>Revamp design clash detection </li></ul><ul><li>Construction planning </li></ul>
  20. 20. Utility Chamber Surveys <ul><li>Applications </li></ul><ul><li>Providing accurate measurable point cloud data </li></ul><ul><li>Condition surveys of the access chambers </li></ul><ul><li>Incoming/Outgoing pipe locations with diameters </li></ul>
  21. 21. <ul><li>Photographic Evidence </li></ul><ul><li>Sketches </li></ul><ul><li>Confined Area Training </li></ul><ul><li>2D Plan Drawings </li></ul>Previous Methods
  22. 22. HDS Scanning Method <ul><li>Applications </li></ul><ul><li>HDS 6000 Laser Scanner </li></ul><ul><ul><li>Phased base scanner with the ability to scan 500k points per second. </li></ul></ul><ul><li>Inverted Tri-pod </li></ul><ul><ul><li>Lower the scanner to between 3 and 4 metres </li></ul></ul><ul><li>Remote Access </li></ul><ul><ul><li>Control the scanner by cable or by wireless connection </li></ul></ul>
  23. 23. Utility Chamber Surveys <ul><li>Benefits </li></ul><ul><li>Faster, safer, more accurate, and more complete surveys of underground chambers </li></ul><ul><li>Non-contact, remote survey reduces potential health and safety risks and improves survey safety </li></ul><ul><li>Reduces site visits needed for data capture </li></ul><ul><li>Full-3D point cloud dataset </li></ul>
  24. 24. Above and Below Ground Data <ul><li>Complete Survey </li></ul><ul><li>Redundant Data Set </li></ul>
  25. 25. Above and Below Ground Data
  26. 26. Deliverables <ul><li>Modelled Pipe Runs </li></ul><ul><li>Automatic Pipe Creation </li></ul><ul><li>Combine GPR and Laser Scan Data </li></ul><ul><li>2D and 3D Drawings </li></ul><ul><li>Simple Plan Drawings </li></ul><ul><li>Create 3D Linework of Features </li></ul><ul><li>Overlay Point Cloud with OSI Data </li></ul><ul><li>Modelled Surfaces </li></ul><ul><li>Model Point Cloud Data such as </li></ul><ul><li>Roads, Buildings and Footpaths </li></ul><ul><li>Generate Grid of Levels </li></ul><ul><li>ASCII Data </li></ul><ul><li>X,Y & Z Coordinates </li></ul><ul><li>Tab, Space or Comma Delimited </li></ul><ul><li>Video Flythru’s </li></ul><ul><li>Presentations </li></ul><ul><li>Planning </li></ul><ul><li>TruViews </li></ul><ul><li>Extract Real 3D Coordinates </li></ul><ul><li>Easy to Use </li></ul><ul><li>Free to End User </li></ul><ul><li>Point Cloud Data </li></ul><ul><li>Cloudworx </li></ul><ul><li>Other Software; GeoMagic, </li></ul><ul><li> Pointools, etc </li></ul><ul><li>Cross Sections </li></ul><ul><li>Create Sections to Specific Thickness </li></ul><ul><li>Step’ Through Data for Analysis </li></ul><ul><li>Quickly Generate CAD Linework </li></ul>
  27. 27. 3D Modelled Pipes
  28. 28. Cross Sections
  29. 29. 2D Plan Drawings
  30. 30. 3D Drawings
  31. 31. Modelled Surfaces Mesh Model Created From Laser Scan Point Cloud Data Grid of Points at 100mm Spacing Created From The Mesh Model
  32. 32. <ul><li>Extract Real 3D Coordinates </li></ul><ul><li>Accurately Measure Distances </li></ul><ul><li>Save And Share Views And Mark-ups </li></ul><ul><li>Easy Measuring, Mark-ups and Hyperlinks </li></ul><ul><li>View TruView File Sets Locally Or Via The Web </li></ul><ul><li>TruView Is Available As A Free Download </li></ul>TruView
  33. 33. TruView
  34. 34. Contact Details Unit F4, Maynooth Business Campus, Maynooth, Co. Kildare, Ireland TEL:  01 6510030  FAX: 01 6510033 e-mail: [email_address] Toughers Business Park Newhall Naas, Co. Kildare, Ireland TEL:  045 435880  FAX: 045 437594 e-mail: [email_address]