Vehicle Seat Positioning for Safe Airbag Occupant Alignment
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Solution Overview
Problem
Existing airbag systems struggle to effectively protect occupants of varying heights, particularly shorter individuals, in vehicles with unique seating arrangements such as carriage style seating, due to insufficient distance coverage during collisions.
Innovation Solution
A vehicle occupant protection system that includes sensors to detect the position of a vehicle occupant relative to the airbag, and adjusts the seat position using a vehicle seat adjustment mechanism to ensure the occupant is within a safe zone for airbag interaction, utilizing mechanisms like inflatable bladders and actuators to optimize protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If airbags are deployed from a roof area in vehicles with carriage style seating, then airbag coverage is provided, but the distance coverage is insufficient for shorter occupants
Solution Approach 1:
The patent implements dynamic seat position adjustment that responds to detected collision conditions. The seat adjustment mechanism modifies the distance between the occupant and airbag based on real-time sensor data about impact severity and direction, optimizing protection for occupants of varying heights during different collision scenarios
Solution Approach 2:
The system changes the physical parameter of seat position to optimize airbag interaction. By adjusting the seat's distance from the airbag deployment zone based on detected collision parameters, the system ensures shorter occupants are positioned within the effective protection zone while maintaining appropriate spacing for taller occupants during normal operation
2Adaptability or versatility
If the seat position is fixed, then device complexity is reduced, but adaptability to occupants of varying heights is insufficient
Solution Approach 1:
The seat adjustment system operates autonomously based on sensor inputs from the airbag system. The control system automatically detects collision conditions and adjusts seat positions without requiring manual intervention from occupants, enabling the system to adapt to different occupant heights and collision scenarios while maintaining simple user interaction
Solution Approach 2:
The seat adjustment mechanism serves multiple functions: it optimizes airbag protection for occupants of varying heights, provides comfort adjustments during normal operation, and responds to different collision types (frontal, side, rearward). This multi-functionality justifies the added complexity by delivering comprehensive safety and comfort benefits across diverse usage scenarios
3Reliability
If manual seat adjustment is required for optimal airbag protection, then device complexity is reduced, but ease of operation is worsened
Solution Approach 1:
The system continuously monitors collision conditions through sensor feedback and automatically adjusts seat positions in response to detected impact parameters. This closed-loop control ensures optimal protection is maintained dynamically during collision events without requiring occupants to manually adjust their positions, combining reliability with operational convenience
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures that occupants of varying heights, including shorter individuals, are seated in positions that allow for optimal airbag protection by adjusting the seat position to align with the airbag deployment zone, enhancing safety and comfort.
Implementation Method 1
An airbag system may include an airbag and an inflator for providing the airbag with a gas to inflate the airbag. Upon involvement in a collision, airbags may rapidly inflate to create a cushion between the vehicle occupant and interior surfaces of the vehicle.
Implementation Method 2
utilizing mechanisms like inflatable bladders and actuators to optimize protection
Data Source
AI summary
A vehicle occupant protection system may comprise a vehicle seat adjustment control system. The control system may be configured to receive from a vehicle sensor a signal associated with an occupant sitting on a vehicle seat. Based upon the received signal, the control system may be configured to determine a feature associated with a body of the occupant sitting on the vehicle seat is located outside a zone of safe impact with an airbag in a deployed state, and cause a vehicle seat adjustment mechanism to adjust a position of the vehicle seat so that the feature associated with the body of the occupant sitting on the vehicle seat is located within the zone of safe impact with the airbag in the deployed state.