Driver Assistance Warning Timing for Primary Collision Objects
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Solution Overview
Problem
Existing driver assistance systems face a conflict in determining when to intervene in vehicle operations, as unnecessary warnings can distract drivers, while insufficient warnings may not allow adequate reaction time, and existing methods do not effectively account for a driver's field of vision and reaction time in critical situations.
Innovation Solution
A driver assistance system that detects impending collisions, classifies a primary collision object, and provides assistance signals based on the driver's expected reaction time and field of vision, using internal and external sensors to ensure timely warnings and interventions, optimizing intervention based on the most critical collision object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driver assistance system issues warning signals in all detected critical situations, then road safety is improved, but driver distraction increases due to unnecessary warnings
Solution Approach 1:
The system applies different warning strategies based on the specific characteristics of each collision object. Objects outside the driver's field of vision receive earlier warnings, while objects within the field of vision use standard timing. This localized adaptation of warning behavior reduces unnecessary distractions while maintaining safety for critical unseen objects.
Solution Approach 2:
The system performs preliminary detection of the driver's field of vision and determines whether collision objects are visible to the driver before issuing warnings. This preliminary assessment allows the system to adjust warning timing appropriately, issuing earlier warnings only for objects outside the field of vision where the driver cannot naturally detect them.
2Loss of time
If the driver assistance system issues warnings earlier to ensure adequate reaction time, then driver reaction time is improved, but false alarms increase causing driver distraction
Solution Approach 1:
The system applies different warning timing based on the spatial relationship between the collision object and the driver's field of vision. Objects outside the field of vision trigger earlier warnings to compensate for the driver's inability to see them, while objects within the field of vision use standard warning timing, thereby reducing false alarms.
Solution Approach 2:
The system performs preliminary detection of the driver's field of vision and the position of collision objects before determining warning timing. This preliminary action allows the system to calculate appropriate warning times that ensure adequate reaction time only when necessary, avoiding false alarms for visible objects.
3Measurement precision
If the driver assistance system monitors multiple collision objects, then detection accuracy is improved, but computational power and energy consumption increase
Solution Approach 1:
The system applies different levels of monitoring intensity to different collision objects based on their relevance. Objects outside the driver's field of vision receive continuous monitoring with high priority, while objects within the field of vision use standard monitoring, optimizing energy consumption while maintaining detection accuracy for critical objects.
Data Source
AI summary
The invention relates to a method for operating a driver assistance system (5), by means of which an imminent collision of a motor vehicle (3) equipped with the driver assistance system (5) with a possible collision object (1) is detected and on the basis thereof an assistant signal is provided in the motor vehicle (3) by means of the driver assistance system (5), wherein the field of view (2) of a driver of the motor vehicle (3) is detected by a sensor system (7) so that an expected reaction time of the driver is determined using the field of view (2). According to the invention, a plurality of possible collision objects (1) are detected, one of the collision objects is classified as a primary collision object (8), and a signal providing time at which the assistance signal is provided is set on the basis of the expected reaction time and on the basis of an expected duration until the collision with the primary collision object (8).