Weather-Adaptive Driver Assistance Range for Rain and Fog
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Solution Overview
Problem
During heavy rain or foggy conditions, driver assistance systems like radars output noisier signals, and side windows and side mirrors can be covered in water droplets, reducing the driver's visibility of other road users, leading to reduced confidence and increased risk of collisions.
Innovation Solution
A control system that modifies spatial range parameters of driver assistance systems based on weather conditions, such as rain or fog, to enhance the detection and alerting of other road users, including blind spot monitoring, cross-traffic monitoring, and pre-crash functions, by adjusting trigger and deactivation ranges and implementing collision avoidance actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driver assistance sensors operate in rainy conditions, then the system can detect other road users, but the sensor output becomes noisier and less reliable
Solution Approach 1:
The system changes operational parameters (spatial range parameters such as trigger range and deactivation range) based on detected weather conditions. When rain or fog is detected, the system adjusts these parameters to account for reduced visibility and noisier sensor signals, thereby maintaining reliable operation in adverse conditions
2Loss of information
If side windows and side mirrors are covered in water droplets, then the driver loses visibility of other road users, but the weather condition monitoring system can detect the adverse conditions
Solution Approach 1:
The system uses feedback from weather condition sensors to continuously monitor and detect adverse conditions such as rain and fog. This feedback loop enables the system to identify when visibility is compromised and automatically adjust spatial range parameters to compensate for the loss of visual information
3Reliability
If the trigger range is increased in adverse weather conditions, then collision detection capability is improved, but false alerts may increase
Solution Approach 1:
The system dynamically adjusts spatial range parameters based on real-time weather conditions. The trigger range and deactivation range are not fixed but adapt automatically when adverse conditions are detected, allowing the system to optimize collision detection reliability without manual intervention while managing complexity through automated control logic
Data Source
AI summary
A control system (200) for a vehicle (1), the control system comprising one or more controllers (201), wherein the control system is configured to:receive (402) information indicative of a weather condition; andin dependence on the information indicative of a weather condition, modify (406) at least one spatial range parameter of a driver assistance system configured to monitor other road users.