Adaptive Airbag Deployment for Non-Standard Seating Postures
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Solution Overview
Problem
Conventional vehicle airbag systems are inadequate in protecting passengers during vehicle collisions when they are in non-standard seating postures, such as relax or long-sliding modes, due to limitations in airbag deployment based on fixed positions and angles.
Innovation Solution
A vehicle airbag system that includes a front airbag mounted in the dashboard and an upper airbag in the head lining, with a seat detector to assess the passenger's seating posture and control the deployment of both airbags accordingly, ensuring protection across various seating configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional front airbag is mounted in the dashboard to protect the passenger, then the passenger's front is protected during normal driving, but the protection is insufficient when the passenger is in non-standard seating postures such as relax or long-sliding modes
Solution Approach 1:
The airbag system is divided into multiple independent airbags: a front airbag mounted in the dashboard and an upper airbag mounted in the head lining. Each airbag can be deployed independently based on the detected seating posture, allowing the system to provide appropriate protection for different seating configurations without requiring a single complex airbag structure
Solution Approach 2:
The airbag deployment system transitions from a static, fixed deployment pattern to a dynamic, adaptive deployment pattern. The controller dynamically determines which airbag(s) to deploy based on real-time detection of the passenger's seating posture by the seat detector, enabling the system to adapt to varying seating conditions such as normal driving, relax mode, and long-sliding mode
2Device complexity
If the airbag deployment is based on fixed positions and angles, then the control system is simple, but it cannot protect passengers in various seating configurations
Solution Approach 1:
The seat detector continuously monitors and detects the passenger's seating posture in advance before a collision occurs. This preliminary detection allows the controller to pre-determine the appropriate airbag deployment strategy based on the detected posture, so that when a collision occurs, the correct airbag(s) can be deployed immediately without complex real-time calculations
Solution Approach 2:
The system implements a feedback mechanism where the seat detector provides continuous information about the passenger's seating posture to the controller. The controller uses this feedback to adjust and determine the optimal airbag deployment strategy, creating a closed-loop control system that adapts to the actual seating conditions rather than relying solely on fixed pre-programmed scenarios
Data Source
AI summary
A vehicle airbag system is proposed. The vehicle airbag system includes: a front airbag mounted to a portion of a vehicle in front of a passenger and configured to be unfolded toward a front of the passenger; an upper airbag mounted to a portion of the vehicle above the passenger and configured to be unfolded toward the front of the passenger; a seat detector configured to detect a seating posture of the passenger; and a controller configured to control unfolding of the front airbag or the upper airbag on the basis of the passenger's seating posture detected by the seat detector.