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Sensice ice detectors Dr Ulf Elman, President Sensice 070320.
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Transcript of Sensice ice detectors Dr Ulf Elman, President Sensice 070320.
![Page 1: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/1.jpg)
Sensice ice detectors
Dr Ulf Elman, President
Sensice 070320
![Page 2: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/2.jpg)
Traffic accidents in Sweden 1995-1999:
Sensice 070320
•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
![Page 3: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/3.jpg)
Fixed applications
Roadside mounting
Sensice 070320
![Page 4: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/4.jpg)
Fixed applications
Icing alert at building entrances
Sensice 070320
![Page 5: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/5.jpg)
Fixed applications
Ice detection at airports
Sensice 070320
![Page 6: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/6.jpg)
Fixed applications
Ice sheet or icicle buildup at sensitive spots
Sensice 070320
![Page 7: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/7.jpg)
In-car mounting
Detection range: 50m
Sensice 070320
![Page 8: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/8.jpg)
In-car mounting
Continuous detection with a response time
of 0.1 s
Sensice 070320
![Page 9: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/9.jpg)
In-car mountingInsensitive to ambient light and works in darkness
Sensice 070320
![Page 10: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/10.jpg)
In-car mountingSeveral interface options:
Sensice 070320
•Display integrated with detector
•Separate display unit
•FlexRay, CAN-bus, Ethernet, USB, RS232 or RS485
![Page 11: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/11.jpg)
In-car mounting
Placing the detector head:
Sensice 070320
•Integrated display and detector head behind windscreen
•Separate detector head at front of vehicle
![Page 12: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/12.jpg)
General properties
Uses infrared spectroscopy
Sensice 070320
![Page 13: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/13.jpg)
General properties
Principles of spectroscopy
Sensice 070320
•Ice transparent to visible light
•Ice is reflective (metal like) in the MIR range
•Ice is distinctly ”coloured” in the NIR range
![Page 14: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/14.jpg)
General properties
Four state system
Sensice 070320
1. Dry
2. Wet
3. Ice
4. Mix of ice and water
![Page 15: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/15.jpg)
General properties
Six state system
Sensice 070320
2. Wet
1. Dry
3. Clear ice
4. Snow
5. Sleet
6. Wet clear ice
![Page 16: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/16.jpg)
General properties
Six state system
Sensice 070320
• Ice and water ratio
• Ice and water thickness
• Accepts larger layer thickness range
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Failure rate
Sensice 070320
•Unable to separate water/ice on windscreen or in the air from water/ice on road surface
•Intrinsic failure rate
•External error sources
•Staring system, detection area may leave road surface•Objects in line of sight, such as wipers or other cars, may interfer with detection
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Synergy effects
Sensice 070320
•Does not interfer with infrared night vision system and may share some optics with it
•May beneficially use rain sensor data
•If mounted behind windscreen it may use wiper control system data
•Cooperates advantageously with adaptive headlights
![Page 19: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/19.jpg)
Decreasing size and weight
Sensice 070320
•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
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Sensice’s unique detectors
•Excessively expensive systems for ice
detection have been around for decades
Sensice 070320
•Sensice’s ice detectors are unique in that they are produceable at cost levels
acceptable to consumers
![Page 21: Sensice ice detectors Dr Ulf Elman, President Sensice 070320.](https://reader036.fdocuments.in/reader036/viewer/2022062303/5519e0ec550346443e8b4fc4/html5/thumbnails/21.jpg)
Company facts, Sensice
Sensice 070320
•Founded 2004
•First order september 2005 (Volvo, LuTH)
•Two patents granted, further patents pending