Vehicle Seat Restraint Control for Autonomous Driving Stability
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Solution Overview
Problem
Existing self-driving car systems face challenges in balancing occupant comfort and safety during autonomous driving mode, as they often prioritize one over the other, leading to suboptimal performance in dynamic driving conditions.
Innovation Solution
A restraining device control system that includes a seat belt device and side support devices, controlled by a unit that adjusts restraining force based on environmental predictions, increasing force during anticipated vehicle vacillation and decreasing force during stable conditions, to maintain occupant safety and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the restraining force is increased to ensure occupant safety during autonomous driving, then occupant protection performance is improved, but occupant comfort deteriorates
Solution Approach 1:
The restraining device control system dynamically adjusts the restraining force based on real-time environmental conditions and predicted vehicle behavior. The control unit modifies the restraining force level according to the driving situation, transitioning between different restraint states to balance safety and comfort requirements in autonomous driving mode
Solution Approach 2:
The system performs preliminary prediction of vehicle behavior based on surrounding environment detection before actual vehicle movements occur. By anticipating potential large movements or vibrations ahead of time, the control unit can proactively adjust the restraining force to appropriate levels, preventing excessive restraint before it becomes necessary
2Ease of operation
If the restraining force is decreased to enhance occupant comfort in autonomous driving mode, then occupant comfort is improved, but occupant safety deteriorates
Solution Approach 1:
The system maintains dynamic adaptability by continuously monitoring environmental conditions and adjusting the restraining force accordingly. When the environment indicates stable driving conditions with minimal vehicle movement expected, the system reduces restraining force to enhance comfort while maintaining adequate protection levels
Solution Approach 2:
The control unit receives feedback from the surrounding environment detection unit and continuously adjusts the restraining force based on this information. The system monitors environmental conditions, predicts vehicle behavior, and modifies restraint levels in response to changing conditions, ensuring both comfort and safety are maintained appropriately
3Reliability
If the restraining force is continuously increased to account for unpredictable vehicle behavior, then occupant protection performance is improved, but occupant comfort and system complexity deteriorate
Solution Approach 1:
The system performs preliminary assessment of environmental conditions and predicts potential vehicle behavior patterns before adjustments are needed. By evaluating surrounding conditions in advance and anticipating vehicle responses, the control unit can make informed decisions about restraining force levels without requiring complex real-time reaction mechanisms
Solution Approach 2:
The control unit adjusts the restraining force parameter based on environmental conditions and predicted vehicle behavior. The system modifies this key parameter dynamically according to situational requirements, using environmental detection data to determine appropriate restraint levels without requiring overly complex control algorithms
Data Source
AI summary
A restraining device control system includes: a restraining device that is provided at a vehicle seat and that restrains an occupant seated in the vehicle seat; a surrounding environment detection unit that detects an environment surrounding a vehicle; and a control unit that increases a restraining force on the occupant by the restraining device in a case in which it has been predicted, from the surrounding environment of the vehicle, that vacillation of the vehicle while in an autonomous driving mode will exceed a threshold amount and that decreases the restraining force on the occupant by the restraining device in a case in which it has been predicted, from the surrounding environment of the vehicle, that the vehicle will maintain a state in which vacillation of the vehicle while in the autonomous driving mode is less than the threshold amount.