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Sens ice ice detectors

Sens ice ice detectors

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Sens ice ice detectors

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  1. Sensice ice detectors Dr Ulf Elman, President Sensice 070320

  2. Traffic accidents in Sweden 1995-1999: • 37828 at snowy or icy road surface conditions, of these did • 15589 occur during black ice conditions, and in addition did • 572 accidents related to aquaplaning occur Sensice 070320

  3. Fixed applications Roadside mounting Sensice 070320

  4. Fixed applications Icing alert at building entrances Sensice 070320

  5. Fixed applications Ice detection at airports Sensice 070320

  6. Fixed applications Ice sheet or icicle buildup at sensitive spots Sensice 070320

  7. In-car mounting Detection range: 50m Sensice 070320

  8. In-car mounting Continuous detection with a response time of 0.1 s Sensice 070320

  9. In-car mounting Insensitive to ambient light and works in darkness Sensice 070320

  10. In-car mounting • Display integrated with detector Several interface options: • Separate display unit • FlexRay, CAN-bus, Ethernet, USB, RS232 or RS485 Sensice 070320

  11. In-car mounting • Integrated display and detector head behind windscreen Placing the detector head: • Separate detector head at front of vehicle Sensice 070320

  12. General properties Uses infrared spectroscopy Sensice 070320

  13. General properties • Ice transparent to visible light Principles of spectroscopy • Ice is reflective (metal like) in the MIR range • Ice is distinctly ”coloured” in the NIR range Sensice 070320

  14. General properties 1. Dry Four state system 2. Wet 3. Ice 4. Mix of ice and water Sensice 070320

  15. General properties 1. Dry Six state system 2. Wet 3. Clear ice 4. Snow 5. Sleet 6. Wet clear ice Sensice 070320

  16. General properties • Ice and water thickness • Ice and water ratio Six state system • Accepts larger layer thickness range Sensice 070320

  17. Failure rate • External error sources • Unable to separate water/ice on windscreen or in the air from water/ice on road surface • Staring system, detection area may leave road surface • Objects in line of sight, such as wipers or other cars, may interfer with detection • Intrinsic failure rate Sensice 070320

  18. Synergy effects • Does not interfer with infrared night vision system and may share some optics with it • Cooperates advantageously with adaptive headlights • If mounted behind windscreen it may use wiper control system data • May beneficially use rain sensor data Sensice 070320

  19. Decreasing size and weight • Present volume 2.8 l, weight 2.7 kg • Next version volume 1.0 l, weight 0.5 kg • Ultimate size limit set by aperture sizes, may be made far smaller and much more lightweight Sensice 070320

  20. Sensice’s unique detectors Excessively expensive systems for ice detection have been around for decades • Sensice’s ice detectors are unique in that they are produceable at cost levels acceptable to consumers Sensice 070320

  21. Company facts, Sensice • Founded 2004 • First order september 2005 (Volvo, LuTH) • Two patents granted, further patents pending Sensice 070320

  22. Thank you Further information: www.sensice.com Inquiries: inquiries@sensice.com Sensice 070320