Motor Vehicle Seat Locking for Collision-Specific Protection
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Solution Overview
Problem
Conventional motor vehicle seat locking systems fail to account for the type of accident, force intensity, seat orientation, occupancy, and passenger characteristics, leading to inadequate protection during collisions.
Innovation Solution
A method for dynamically locking motor vehicle seat adjustment devices based on detected usage and danger situations, using sensor data to select appropriate locking actions that optimize energy management and deformation behavior for enhanced passenger safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional locking systems are used that merely lock the vertical adjustment, then the structure is simple, but the protection is insufficient because other components like the backrest are not locked during collisions
Solution Approach 1:
The locking system is divided into multiple independent locking devices, each responsible for locking specific adjustment components (seat pan, backrest, headrest). This segmentation allows comprehensive protection of all vulnerable components while maintaining modular simplicity in each individual locking unit.
Solution Approach 2:
The locking system is designed as a universal multi-functional system that can lock various adjustment components (longitudinal adjustment, recline adjustment, height adjustment) through different locking devices. The system adapts to different collision scenarios and seat configurations, providing comprehensive protection without requiring entirely separate systems for each function.
2Reliability
If automatic locking is implemented independently of passenger characteristics, then the system is simple to operate, but it does not provide optimized protection tailored to the actual usage situation and accident type
Solution Approach 1:
The locking system incorporates feedback mechanisms through sensors that detect usage situations (seat occupancy, adjustment positions) and accident parameters (collision type, force intensity). This feedback enables the control unit to analyze the situation and activate appropriate locking devices dynamically, optimizing protection based on real-time conditions rather than pre-programmed fixed responses.
Solution Approach 2:
The locking system transitions from static pre-set locking to dynamic situation-dependent locking. The system continuously monitors usage and danger situations, and the locking state changes dynamically based on detected accident parameters and usage conditions, allowing optimized protection for each specific scenario.
3Reliability
If locking actions are selected based on detected usage and danger situations, then protection is optimized for specific scenarios, but the detection and control requirements increase system complexity
Solution Approach 1:
The sensor system is designed as a universal multi-functional detection platform that can identify multiple types of usage situations (occupancy, seat position, restraint usage) and danger situations (collision type, force intensity) using integrated sensors. This universal detection approach reduces overall system complexity compared to having separate dedicated sensors for each parameter.
Solution Approach 2:
The control unit serves as an intermediary that processes detection data from various sensors and translates it into appropriate locking commands. This intermediary layer simplifies the overall system architecture by centralizing the complex detection and decision-making logic in a single control unit, rather than distributing complex detection functions across multiple independent systems.
Data Source
AI summary
In a method for locking an adjustment device of a motor vehicle seat, a usage situation and/or danger situation is detected. In response to the detected usage situation and/or danger situation, a locking action for the adjustment device is selected, and the selected locking action for the adjustment device is executed.