Sensice detectors Dr Ulf Elman President Sensice 070320

Sensice detectors Dr Ulf Elman, President Sensice 070320

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 Sensice 070320 • 572 accidents related to aquaplaning occur

Fixed applications Roadside mounting Sensice 070320

Fixed applications Icing alert at building entrances Sensice 070320

Fixed applications Ice detection at airports Sensice 070320

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

In-car mounting Detection range: 50 m Sensice 070320

In-car mounting Continuous detection with a response time of 0. 1 s Sensice 070320

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

In-car mounting Several interface options: • Display integrated with detector • Separate display unit • Flex. Ray, CAN-bus, Ethernet, USB, RS 232 or RS 485 Sensice 070320

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

General properties Uses infrared spectroscopy Sensice 070320

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

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

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

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

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

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

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

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

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

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