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JRC2017-2270 ASSESSMENT of PANTOGRAPH LOSS-of-CONTACT TRANSIENTS A FOLLOW-UP Bih-Yuan Ku & Guan-Ru Chen Taipei University of Technology Taipei, Taiwan Joint Rail Conference - April 4 - 7, 2017 1 Philadelphia, 2017 JRC2017-2270

  1. JRC2017-2270 ASSESSMENT of PANTOGRAPH LOSS-of-CONTACT TRANSIENTS A FOLLOW-UP Bih-Yuan Ku & Guan-Ru Chen Taipei University of Technology Taipei, Taiwan Joint Rail Conference - April 4 - 7, 2017 1 Philadelphia, 2017

  2. JRC2017-2270 Contents Intr troducti tion Previo ious Work Arc Images Arc Intensity ty Sensin ing Conclu lusio ion Joint Rail Conference - April 4 - 7, 2017 2 Philadelphia, 2017

  3. JRC2017-2270 Introduction ▶ A follo low-up of previo ious work on Panto tograph arc assessme ment t ▶ Use both arc image and intensit ity detecti tion ▶ Refer to EN50119 Standards ▶ Examin minati tion of video clip ips and arc intensit ity data from m field ld tests ts Joint Rail Conference - April 4 - 7, 2017 3 Philadelphia, 2017

  4. JRC2017-2270 Previous Work ▶ Previo ious paper in 2013 JRC “Quantitative measurement of pantograph loss-of- contact dynamics” ▶ First t presenta tati tion of arc intensit ity sensor for quantit itati tive assessme ment ▶ Combin ined with accele lerome mete ter and video camera for loss-of of-conta tact t monito torin ing Joint Rail Conference - April 4 - 7, 2017 4 Philadelphia, 2017

  5. JRC2017-2270 Previous Work ▶ Previo ious paper in 2013 JRC Joint Rail Conference - April 4 - 7, 2017 5 Philadelphia, 2017

  6. JRC2017-2270 Previous Work ▶ Arc intensit ity sensor outputs ts in 2013 JRC Joint Rail Conference - April 4 - 7, 2017 6 Philadelphia, 2017

  7. JRC2017-2270 Previous Work ▶ Arc intensit ity sensor outputs ts in 2013 JRC Joint Rail Conference - April 4 - 7, 2017 7 Philadelphia, 2017

  8. JRC2017-2270 Previous Work ▶ Video images from m older camcorder Joint Rail Conference - April 4 - 7, 2017 8 Philadelphia, 2017

  9. JRC2017-2270 Previous Work ▶ Arc intensit ity sensor good for fast arc intensit ity transie ient Q : What else can be done ? ▶ Use consume mer-grade video camera, not profes fessional l high-speed camera Q : Any consume mer-grade camera good for arc video image ? Joint Rail Conference - April 4 - 7, 2017 9 Philadelphia, 2017

  10. JRC2017-2270 Arc Image ▶ High-speed cameras are good but not economi micall lly feasib ible le ▶ Acti tion cameras are inexpensiv ive and can be insta tall lled on loco/c /car roof. Q : Are consume mer-grade acti tion camera good for arc video image ? Joint Rail Conference - April 4 - 7, 2017 10 Philadelphia, 2017

  11. JRC2017-2270 Arc Image Small arc with blue color r in its s periphery ry Joint Rail Conference - April 4 - 7, 2017 11 Philadelphia, 2017

  12. JRC2017-2270 Arc Image Small arc with yellow to red color r in its s periphery ry Joint Rail Conference - April 4 - 7, 2017 12 Philadelphia, 2017

  13. JRC2017-2270 Arc Image Arcs s on both contact ct stri ripes s simultaneousl sly y (I) Joint Rail Conference - April 4 - 7, 2017 13 Philadelphia, 2017

  14. JRC2017-2270 Arc Image Arcs s on both contact ct stri ripes s simultaneousl sly y (II) Joint Rail Conference - April 4 - 7, 2017 14 Philadelphia, 2017

  15. JRC2017-2270 Arc Image Arcs s on both contact ct stri ripes s simultaneousl sly y (III) Joint Rail Conference - April 4 - 7, 2017 15 Philadelphia, 2017

  16. JRC2017-2270 Arc Image Arc intensi sity y differs rs in various s direct ctions s (I) Joint Rail Conference - April 4 - 7, 2017 16 Philadelphia, 2017

  17. JRC2017-2270 Arc Image Arc intensi sity y differs rs in various s direct ctions s (II) Joint Rail Conference - April 4 - 7, 2017 17 Philadelphia, 2017

  18. JRC2017-2270 Arc Image ▶ Acti tion cameras can produce high- qualit ity arc images at high frame me rate ▶ Arc shapes and intensit ity are not uniform m in diff fferent t directi tions ▶ Acti tion cameras capture very small ll arcs, , raisin ing the questi tion of crit iteria ia for “measurable arcs” in EN50119 Joint Rail Conference - April 4 - 7, 2017 18 Philadelphia, 2017

  19. JRC2017-2270 Arc Intensity Sensing ▶ Two field ld tests ts were conducte ted in 2014 in Taiwan’s East Mainline ▶ Two arc sensors insta tall lled on both sides of locomo moti tive roof f under the pantograph in the 1 st st fie ield ld test ▶ Arc sensors insta tall lled in front t and rear of the pantograph in the 2 nd nd field ld test Joint Rail Conference - April 4 - 7, 2017 19 Philadelphia, 2017

  20. JRC2017-2270 Arc Intensity Sensing 1 st 2 nd st field nd field ld test ld test t arc t arc senso c senso sor deploym sor deploym loyment loyment Joint Rail Conference - April 4 - 7, 2017 20 Philadelphia, 2017

  21. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 1 st st field ld test t : on both sides of loco roof under pantograph Joint Rail Conference - April 4 - 7, 2017 21 Philadelphia, 2017

  22. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 2 nd nd field ld test t : on loco roof under pantograph/ / front t & rear mV Joint Rail Conference - April 4 - 7, 2017 22 Philadelphia, 2017

  23. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 2 nd nd field ld test t : on loco roof under pantograph/ / front t & rear V Joint Rail Conference - April 4 - 7, 2017 23 Philadelphia, 2017

  24. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 2 nd nd field ld test t : on loco roof under pantograph/ / front t & rear V Joint Rail Conference - April 4 - 7, 2017 24 Philadelphia, 2017

  25. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 2 nd nd field ld test t : on loco roof under pantograph/ / front t & rear V Joint Rail Conference - April 4 - 7, 2017 25 Philadelphia, 2017

  26. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 2 nd nd field ld test t : on loco roof under pantograph/ / front t & rear V Joint Rail Conference - April 4 - 7, 2017 26 Philadelphia, 2017

  27. JRC2017-2270 Arc Intensity Sensing Arc intensit ity sensor outputs ts in 2 nd nd field ld test t : on loco roof under pantograph/ / front t & rear V Joint Rail Conference - April 4 - 7, 2017 27 Philadelphia, 2017

  28. JRC2017-2270 Conclus lusion ion ▶ Consume mer-grade actio ion cameras can be an inexpensiv ive alternati tive for high-speed camera to capture high- resolutio lution arc images at high rates tes ▶ Arc images and intensit ity sensor out- puts confi firm m that arcs do not proje ject light t uniformly mly in all directi tions Joint Rail Conference - April 4 - 7, 2017 28 Philadelphia, 2017

  29. JRC2017-2270 Conclus lusion ion ▶ Need for more precis ise crit iteria ia for “measurable arcs” in international standards such as EN50119 in terms ms of arc image siz ize and/or intensit ity ▶ Sensor deployme ment t should also be inclu luded in Internati tional l standards updates or revis isions Joint Rail Conference - April 4 - 7, 2017 29 Philadelphia, 2017

  30. JRC2017-2270 Conclus lusion ion Camera ras s and arc sensor r deployme yment examp mple Joint Rail Conference - April 4 - 7, 2017 30 Philadelphia, 2017

  31. JRC2017-2270 Thank ank you ou Ques esti tions? ons? Joint Rail Conference - April 4 - 7, 2017 31 Philadelphia, 2017

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