Vehicle Collision Sensor Feature Generator for Precise Triggering
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Solution Overview
Problem
Existing motor vehicle collision and personal protection systems lack precise triggering mechanisms, which can lead to inadequate protection during collisions.
Innovation Solution
A collision and personal protection system that utilizes a collision sensor to measure movement variables, generating a feature signal through a feature generator, which is used to determine an ignition signal for controlling personal protection actuators, such as airbags or belt tensioners, with an automatically selected feature generator optimizing the triggering process based on a cost function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple collision sensor is used to detect movement variables, then the device complexity is reduced, but the measurement precision and triggering accuracy deteriorate
Solution Approach 1:
The patent introduces a feature generator as an intermediary component between the collision sensor and the control unit. This feature generator processes the raw movement variable signals to extract meaningful feature signals that accurately represent collision characteristics. The feature generator acts as a mediator that transforms simple sensor data into precise collision indicators without requiring complex sensor hardware.
Solution Approach 2:
The patent replaces complex mechanical collision detection systems with an electronic signal processing approach. Instead of using multiple complex sensors or mechanical switches, the system uses a single movement variable sensor combined with electronic feature extraction through the feature generator. This substitution of mechanical complexity with electronic processing achieves high measurement precision while maintaining simple device architecture.
2Measurement precision
If multiple feature generators are used to optimize triggering, then the triggering precision is improved, but the device complexity increases
Solution Approach 1:
The patent implements a dynamic selection mechanism where the control unit automatically selects from multiple available feature generators based on the specific collision scenario. Rather than using all feature generators simultaneously, the system dynamically chooses the most appropriate one for each situation. This dynamic approach achieves high triggering precision across various collision types while avoiding the complexity of permanently implementing all possible feature generators.
Solution Approach 2:
The patent changes the operational parameters of the feature selection process based on collision characteristics. The control unit adjusts which feature generator is active depending on the measured movement variables and collision patterns. This parameter-based selection allows the system to optimize triggering precision for different collision scenarios without requiring a permanently complex multi-generator architecture.
3Ease of operation
If automated feature generator selection is implemented, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the control unit automatically selects and configures the appropriate feature generator without external intervention. The system monitors collision parameters in real-time and autonomously determines which feature generator will provide the most accurate triggering signal. This self-service approach simplifies operation for the user while the control unit handles the complexity of feature generator management internally.
Data Source
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AI summary
The system has a collision sensor for measuring a parameter (aS1) of a motor vehicle, where the parameter is suitable for the collision detection. A person protection actuator is controllable by an ignition signal or a warning device is controllable by the ignition signal. An automatically selected characteristic generator (31.0) is provided for forming the characteristic signal based on the parameter measured by the collision sensor. A controller determines the ignition signal based on a characteristic signal (v0S1). An independent claim is also included for a method for manufacturing a collision and/or a person protection system for a motor vehicle.