Dynamic Occupant Protection Class Adjustment for Vehicle Safety and Comfort
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Solution Overview
Problem
Current occupant protection systems are designed for rigid interior arrangements and lack an overall risk assessment, failing to adapt to both internal and external safety conditions effectively, which limits safety and comfort in varying driving scenarios.
Innovation Solution
An integrated risk assessment system that classifies internal and external safety parameters to dynamically adjust vehicle operations, using sensors and communication systems to maintain an overall safety index, allowing adaptive adjustments between internal and external protection classes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If occupant protection systems are designed for rigid interior arrangements with constant maximum safety devices, then occupant safety is maintained, but vehicle comfort and flexibility are reduced
Solution Approach 1:
The patent applies dynamics by transitioning from static, rigid interior arrangements with constant maximum safety devices to a dynamic system that continuously adapts occupant protection levels based on real-time risk assessment. The control device dynamically adjusts the activation thresholds and readiness states of safety devices (airbags, seatbelts, head restraints) according to the current driving situation, allowing the system to oscillate between high-protection and comfort modes rather than remaining fixed in one state.
Solution Approach 2:
The system changes parameters by adjusting the protection class level (from 1 to 5) based on risk assessment results. This involves modifying critical parameters such as airbag triggering thresholds, seatbelt pre-tensioning forces, and head restraint positioning. By varying these parameters according to the protection class, the system achieves both high reliability in dangerous situations and enhanced comfort in safe conditions, resolving the contradiction between safety and flexibility.
2Reliability
If maximum occupant protection is always activated, then safety is ensured, but comfort functions and driving flexibility are restricted
Solution Approach 1:
The patent segments the occupant protection system into five distinct protection classes (1-5), where each class represents a different level of safety activation. This segmentation allows selective activation of specific protection measures based on the current risk level, rather than uniformly activating all safety devices. For example, in protection class 3, only certain airbags may be pre-charged while others remain in standard mode, enabling nuanced adaptation that preserves comfort functions while maintaining adequate safety.
Solution Approach 2:
The system dynamically transitions between protection classes based on real-time risk assessment, allowing comfort functions to remain available when risks are low while ensuring rapid activation of maximum protection when risks increase. This dynamic adaptation resolves the contradiction by making the system responsive to changing conditions rather than statically restricted.
3Adaptability or versatility
If the system continuously monitors and adjusts protection levels based on risk assessment, then adaptability to driving scenarios is improved, but system complexity increases
Solution Approach 1:
The control device serves multiple functions: it assesses risk, determines protection class, adjusts safety device thresholds, and coordinates between different protection systems (airbags, seatbelts, head restraints). This multi-functionality reduces overall system complexity by consolidating control logic into a single universal controller rather than requiring separate dedicated systems for each function, thereby achieving high adaptability without proportionally increasing complexity.
Solution Approach 2:
The system performs preliminary risk assessment and protection class determination in advance of actual collision events, pre-positioning safety devices in optimal states for the current driving scenario. This preliminary action simplifies the response to actual collisions by having the system already configured appropriately, reducing the complexity of real-time decision-making during critical moments.
Data Source
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AI summary
The invention relates to a method for operating a motor vehicle comprising an occupant protection system, comfort components, at least one occupant detection means for detecting the occupant situation, at least one surroundings detection means for detecting the surrounding situation, and at least one driving state detection means for detecting the driving state situation. The occupant protection system is adapted depending on the detected situation, in particular the hazard situation. One of several specified external protection or hazard classes is derived from at least some of the signals of the surroundings detection means and the driving state detection means, and one of several specified internal protection or hazard classes is derived from at least some of the signals of the occupant detection means and the driving state detection means. The operation of the motor vehicle is then adapted using the current internal and external protection or hazard class such that a specified total degree of the internal protection or hazard class and external protection or hazard class is maintained. Thus, a corresponding low internal protection class or a high hazard class is allowed in particular only in the event of a high external protection class or a low hazard class, in particular the use of specific comfort functions and/or degrees of freedom are allowed.