Pedestrian Protection System Height Criterion Triggering
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Solution Overview
Problem
Conventional pedestrian protection systems in motor vehicles face challenges in reliably distinguishing between pedestrians and other objects, leading to false triggering of safety systems due to the limitations of conventional sensors and algorithms, which can result in unnecessary activation of safety measures like exterior airbags.
Innovation Solution
Incorporating a height criterion into the trigger condition of the pedestrian protection system using measurement data from optical detection devices, such as three-dimensional cameras, to determine if the collision object exceeds a threshold height, thereby enhancing the system's reliability and reducing false triggers by combining data from multiple detection devices operating on different principles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple independent sensors are used to confirm events and prevent false triggering, then reliability improves, but device complexity increases
Solution Approach 1:
The patent combines optical detection devices (cameras) with existing collision sensors to create an integrated detection system. The camera provides height information that complements the collision sensor data, allowing the system to differentiate between actual pedestrians and false targets without requiring multiple complex independent sensor systems.
2Measurement precision
If complex evaluation algorithms are used to link multiple features and criteria, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent extracts and isolates the height criterion as a separate, independent evaluation parameter from the complex algorithmic processing. By using the camera's height measurement as a primary filtering criterion, the system simplifies the overall evaluation logic while maintaining high measurement precision for pedestrian identification.
Data Source
AI summary
A method for operating a pedestrian protection system in a motor vehicle for reducing the severity of an accident in a frontal collision with pedestrians includes evaluating the measurement data from at least one detection device depending on at least one trigger condition, wherein the trigger condition includes a height criterion evaluating whether a height of a collision object determined from measurement data from an optical detection device exceeds a height threshold value.