Driver Assistance System Lateral Guidance Control
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Solution Overview
Problem
Existing driver assistance systems in vehicles lack ease of handling, clarity, and anticipatory assistance, particularly in situations requiring lateral guidance interventions, and often require activation with longitudinal control systems.
Innovation Solution
A driver assistance system that can be activated independently of longitudinal control, featuring a single on/off button for both traffic jam and lane guidance subfunctions, with capacitive hands-on monitoring and automatic coupling to additional safety systems, using video cameras, radars, and EPS for corrective steering interventions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driver assistance systems are coupled with longitudinal control systems for activation, then system integration and coordination are improved, but ease of operation deteriorates due to additional activation steps and complexity
Solution Approach 1:
The driver assistance system is segmented into independent lateral guidance and longitudinal control modules, each with separate activation capabilities. The lateral guidance system can be activated independently via its own control element, without requiring longitudinal control activation, thus improving ease of operation while maintaining system integration through modular architecture
Solution Approach 2:
The control element for lateral guidance is designed to serve multiple functions: it activates lateral guidance, monitors driver attention through hands-on detection, and coordinates with longitudinal control when needed. This multi-functionality reduces the number of separate controls required, improving ease of operation without sacrificing system integration
2Adaptability or versatility
If multiple separate controls are provided for lateral and longitudinal guidance systems, then functional independence is improved, but device complexity deteriorates due to multiple buttons and controls
Solution Approach 1:
The control element for lateral guidance is merged with hands-on detection functionality and integrated into the steering wheel structure. This combines multiple functions (lateral guidance activation, driver monitoring, and coordination with longitudinal control) into a single control interface, reducing device complexity while maintaining functional independence through software-based control logic
3Reliability
If hands-on monitoring is implemented with fixed time intervals, then driver attention monitoring is improved, but ease of operation deteriorates due to abrupt deactivation
Solution Approach 1:
The hands-on monitoring system dynamically adjusts its response based on the duration and pattern of hands-off detection. Instead of fixed-time abrupt deactivation, the system provides progressive warnings and only deactivates lateral guidance after extended periods of hands-off operation, maintaining reliability while improving ease of operation through gradual transitions
4Reliability
If lateral guidance is coupled with longitudinal control activation, then system coordination is improved, but adaptability deteriorates due to restricted activation conditions
Solution Approach 1:
The control system is segmented to allow independent activation of lateral guidance without requiring longitudinal control activation. This segmentation enables the lateral guidance system to operate in various scenarios (with or without longitudinal control, in traffic jams or open roads), improving adaptability while maintaining system coordination through integrated control architecture
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Provides a higher and more anticipatory assistance level with 'steering force-free driving,' allowing lateral guidance without longitudinal guidance, and improved safety in traffic jams through automatic activation of safety systems and transparent feedback.
Implementation Method 1
a capacitive sensor is used to identify when a driver does not have his hands on the steering wheel (hands-off identification)
Data Source
AI summary
A driver assistance system is provided in a motor vehicle, which driver assistance system executes at least active transverse guidance interventions. The driver assistance system can be activated while decoupled from the activation of a longitudinal control system but can also be active both, with and without longitudinal control, and includes both a traffic jam assistance sub-function and a track guiding assistant sub-function. The two sub-functions can be jointly activated and deactivated by a single on-/off-button. The driver assistance system is characterized by a special combination of the sub-functions track guiding assistance and traffic jam assistance. They each take turns depending on the presence of conditions, which are defined differently for each sub-function.