Dynamic Airbag Deployment Force Control
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Solution Overview
Problem
Airbag systems are designed for specific height and posture parameters, leading to potential injuries for occupants outside these ranges due to inadequate deployment force, either from excessive force when too close to the steering wheel or dashboard or insufficient force when too far, resulting in impact with the wheel or dashboard during a crash.
Innovation Solution
A system utilizing one or more computers to monitor the occupant's head or knee position relative to the steering wheel or dashboard, calculating a deployment force based on the distance, and adjusting the airbag inflation accordingly to mitigate injury risk by deploying the airbag at either high or low force depending on the threshold value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed high deployment force is used for the airbag, then occupants sitting far from the steering wheel or dashboard are protected, but occupants sitting close are harmed by excessive force
Solution Approach 1:
The airbag deployment force is made dynamic rather than fixed. The system adjusts the deployment force in real-time based on the detected distance between the occupant and the steering wheel or dashboard. Sensors monitor occupant position and feed this data to the control unit, which then modulates the deployment force accordingly, allowing the same airbag system to safely protect both tall occupants (farther away) and short occupants (closer).
Solution Approach 2:
The deployment force parameter is changed based on occupant position. Instead of using a single fixed deployment force, the system varies the force parameter according to the detected distance. When the occupant is detected to be farther from the steering wheel or dashboard, a higher deployment force is applied; when closer, a lower deployment force is applied, thus optimizing protection for different body types and seating positions.
2Object-affected harmful factors
If a fixed low deployment force is used for the airbag, then occupants sitting close to the steering wheel or dashboard are protected, but occupants sitting far are harmed by insufficient force
Solution Approach 1:
The airbag deployment force is made dynamic rather than fixed. The system adjusts the deployment force in real-time based on the detected distance between the occupant and the steering wheel or dashboard. Sensors monitor occupant position and feed this data to the control unit, which then modulates the deployment force accordingly, allowing the same airbag system to safely protect both tall occupants (farther away) and short occupants (closer).
Solution Approach 2:
The deployment force parameter is changed based on occupant position. Instead of using a single fixed deployment force, the system varies the force parameter according to the detected distance. When the occupant is detected to be farther from the steering wheel or dashboard, a higher deployment force is applied; when closer, a lower deployment force is applied, thus optimizing protection for different body types and seating positions.
3Reliability
If the airbag deployment force is increased, then protection for occupants far from the steering wheel or dashboard is improved, but the risk of injury to occupants close to the wheel increases
Solution Approach 1:
The airbag deployment force is made dynamic rather than fixed. The system adjusts the deployment force in real-time based on the detected distance between the occupant and the steering wheel or dashboard. Sensors monitor occupant position and feed this data to the control unit, which then modulates the deployment force accordingly, allowing the same airbag system to safely protect both tall occupants (farther away) and short occupants (closer).
Solution Approach 2:
The deployment force parameter is changed based on occupant position. Instead of using a single fixed deployment force, the system varies the force parameter according to the detected distance. When the occupant is detected to be farther from the steering wheel or dashboard, a higher deployment force is applied; when closer, a lower deployment force is applied, thus optimizing protection for different body types and seating positions.
4Object-affected harmful factors
If the airbag deployment force is decreased, then safety for occupants close to the steering wheel or dashboard is improved, but protection for occupants far from the wheel deteriorates
Solution Approach 1:
The airbag deployment force is made dynamic rather than fixed. The system adjusts the deployment force in real-time based on the detected distance between the occupant and the steering wheel or dashboard. Sensors monitor occupant position and feed this data to the control unit, which then modulates the deployment force accordingly, allowing the same airbag system to safely protect both tall occupants (farther away) and short occupants (closer).
Solution Approach 2:
The deployment force parameter is changed based on occupant position. Instead of using a single fixed deployment force, the system varies the force parameter according to the detected distance. When the occupant is detected to be farther from the steering wheel or dashboard, a higher deployment force is applied; when closer, a lower deployment force is applied, thus optimizing protection for different body types and seating positions.
Data Source
AI summary
One general aspect includes a system to establish a deployment force for an airbag of a vehicle, the system includes: a memory configured to include one or more executable instructions and a processor configured to execute the executable instructions, where the executable instructions enable the processor to carry out the following steps: monitoring a head position of a vehicle occupant; based on the monitored head position, calculating a distance of a body part of a vehicle operator relative to a portion of an interior cabin of the vehicle; and based on the distance of the body part, establishing the deployment force for the airbag.