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Safety restraint systems
1) The document discusses several new vehicle safety systems including airbags, energy-absorbing bumpers, and rollover protection systems. 2) Airbags include supplemental restraint systems, side impact airbags, head protection airbags, knee bolsters, and seat belt pretensioners. Newer vehicles can have 1-14 airbags in various locations. 3) Rollover protection systems use sensors to detect potential rollovers and deploy roll bars or pop-up roofs to protect occupants. Rescuers must be aware of deployment zones during extrication.
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Safety restraint systems
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- 2. New Vehicle Safety Systems OVERVIEW VEHICLEAIRBAG ENERGY ABSORBING BUMBERS ROLL BARS/CAGES ROLL OVER PROTECTION SYSTEM
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- 4. New Vehicle Safety Systems VEHICLEAIRBAG A) Deployed airbag is usually safe 1. Dust residue from deployed airbags can be hazardous if it contacts the skin or is inhaled a) Use appropriate personal protective equipment
- 5. New Vehicle Safety Systems VEHICLEAIRBAG B) Types of airbag systems 1.Supplemental Restraint Systems (SRS) 2.Side Impact Protection Systems (SIPS) 3.Head Protection Systems (HPS) 4.Knee bolsters 5.Seat belt pretentioners
- 6. New Vehicle Safety Systems VEHICLEAIRBAG C) Undeployed airbags 1.Steering wheel 2.Inflatable tube/side airbags 3.Window curtain 4.1998 and newer vehicles can have 1-14 airbags
- 7. New Vehicle Safety Systems VEHICLEAIRBAG Rollover Sensor ( inclinometer)
- 8. New Vehicle Safety Systems VEHICLEAIRBAG Rollover Sensor ( inclinometer) • Designed to measure the lateral and vertical acceleration, vehicle speed and roll rate to predict an impending rollover • When the sensors detect a potential rollover, the control module triggers the curtain airbags and seat belt pretensioners
- 9. New Vehicle Safety Systems VEHICLEAIRBAG New Style Curtain Airbag • These sensors work in conjunction with a new style curtain airbag
- 10. New Vehicle Safety Systems VEHICLEAIRBAG New Style Curtain Airbag • "Safety Canopy" airbags • In SUV’s 3rd Row Seating • Tethers located on the bottom corners of the bag, lock them in place to prevent occupants from being ejected.
- 11. New Vehicle Safety Systems VEHICLEAIRBAG Safety Canopy Extrication Safety • During cutting operations, rescuers should be aware that with the addition of the third row section, they may find two compressed gas inflaters on both sides of the roof rail instead of one • These must be visually exposed before cutting operations begin
- 12. New Vehicle Safety Systems VEHICLEAIRBAG Safety Canopy Concerns: • These airbags have a controlled deployment speed and may deploy much faster than other airbags. The deployment zone is from the roof rail to the bottom of the window, the full length of the vehicle and the bag is about 5 inches thick
- 13. New Vehicle Safety Systems VEHICLEAIRBAG Safety Canopy Concerns: • Never lean through the window when approaching the vehicle. • These deploy straight down about 18 inches, or to the bottom of the window and are capable of snapping a person's neck
- 14. New Vehicle Safety Systems VEHICLEAIRBAG Safety Canopy Concerns:
- 15. New Vehicle Safety Systems Typesof Airbags KEY CONCEPTS: LOCATIONS DISTANCE SAFETY PLACEMENT
- 16. New Vehicle Safety Systems VEHICLEAIRBAG D) Disabling the airbag 1. Disconnect battery 2. Some models stay active for up to 30 minutes after power is disconnected
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- 19. New Vehicle Safety Systems ENERGYABSORBING BUMPERS 1. 1974 and newer 2. Avoid direct contact in front or back of vehicle if on fire
- 20. New Vehicle Safety Systems ENERGYABSORBING BUMPERS
- 21. New Vehicle Safety Systems ENERGYABSORBING BUMPERS
- 22. New Vehicle Safety Systems ENERGYABSORBING BUMPERS Extrication Safety: Approach front and rear bumpers at a 45 O angle
- 23. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM “Roll Over Protection System (ROPS)” refers to operator compartment structures (usually cabs or frames) intended to protect equipment operators and motorists from injuries caused by vehicle overturns or rollovers Backup power supply – In case main power shuts off Remote Batteries in some vehicles Safety: Manual Deployment: Usually on the dash Takes approximately 4 seconds Personnel can now safely work and hold C-Spine
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- 25. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM History One of the earliest ROPS systems was introduced by Mercedes in 1986.
- 26. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM 2 Types: 1. Flip-up type 2. Pop-up type
- 27. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Deployment: 1. Hydraulic 2. Spring Loaded
- 28. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Actuator: 1. Inclinometer used to sense vehicle inclination and lateral acceleration 2. G-sensor that detects vehicle weightlessness if the vehicle becomes airborne
- 29. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Actuator: Sensors send information to a control module the same as SRS senors do
- 30. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Actuator Limitations: • When the vehicle approaches a lateral angle limit of 62 degrees. • When the vehicle experiences a lateral acceleration of approximately 3 Gs. • When the vehicle approaches it's longitudinal angle limit at approximately 72 degrees. • When a combination of longitudinal acceleration and longitudinal angle would cause the vehicle to roll over in the forward direction. • When the vehicle becomes airborne and achieves weightlessness for at least 80ms.
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- 32. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Flip-up Type: • • Deployable rollbars are concealed until activated. Flip up in less than three tenths of a second, much the same as a deploying airbag Example: Mercedes two seat roadster
- 33. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Flip-up Type:
- 34. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Deployment: • • Deployable rollbars are concealed until activated. Flip up in less than three tenths of a second, much the same as a deploying airbag Example: Mercedes two seat roadster
- 35. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Location: Some are visually obvious
- 36. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Location: Others popup through holes behind the rear head rest.
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- 38. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Extrication Safety: The control module is just like the ones used with SRS systems. They contain capacitors that supply power to the system in case the battery is destroyed in the crash. The average capacitor drain time is 10 seconds.
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- 40. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Extrication Safety: EMS personnel should never lean over the back of a convertible as in holding C-Spine on an occupant. This would put the rescuer's head right over the undeployed roll-bar
- 41. New Vehicle Safety Systems ROLLOVER PROTECTIONSYSTEM Extrication Safety: Rescuers must stay out of the deployment zone in these cases. The deployment zone is 20 inches straight up from the bars
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Editor's Notes
- #5 PPE- Turnouts, gloves, eye protection
- #17 How long can some airbag systems stay active after the power is disconnected?
- #20 How long can some airbag systems stay active after the power is disconnected?
- #25 High strength low alloyUnibody FramesCrumple ZonesGlass “High Penetration Resistant” glass--- Plastic Laminated between two pieces of glass
- #38 High strength low alloyUnibody FramesCrumple ZonesGlass “High Penetration Resistant” glass--- Plastic Laminated between two pieces of glass