Vehicle Exit Warning Lighting Using Radar Distance Detection
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Solution Overview
Problem
Existing driver assistance systems do not effectively support occupants when exiting a parked vehicle, as they fail to provide adequate warnings for potential collisions with approaching cyclists or vehicles, leading to accidents.
Innovation Solution
A driver assistance system equipped with a vehicle-mounted sensor device and a lighting system that changes color from ambient lighting to a warning mode when a predetermined minimum distance is breached, using radar sensors and contour lighting to alert occupants of impending collisions by switching from a yellow to a red light spectrum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lighting device emits light with the first wavelength (ambient lighting mode), then the interior lighting provides ambient illumination for occupants, but it does not provide adequate warning for potential collisions when a vehicle approaches
Solution Approach 1:
The lighting device dynamically changes its operating mode based on detected conditions. The control device switches between first operating mode (ambient lighting with first wavelength) and second operating mode (collision warning with second wavelength) depending on whether an approaching vehicle is detected within the minimum distance by the sensor device, making the system adaptive to different situational requirements
Solution Approach 2:
The lighting device uses different wavelengths (colors) of light to convey different information states. The first wavelength provides ambient illumination while the second wavelength provides urgent collision warning, allowing the system to communicate safety status through color/wavelength changes without requiring additional warning devices
2Ease of operation
If the lighting device switches to the second wavelength (warning mode) when minimum distance is breached, then collision warning is provided to occupants, but the ambient lighting function is lost
Solution Approach 1:
The lighting device operates in periodic alternation between ambient lighting mode and collision warning mode based on sensor detection. The control device continuously monitors the distance to approaching vehicles and switches wavelengths only when necessary (when minimum distance is breached), otherwise maintaining ambient lighting, thus optimizing energy usage based on actual safety needs
Solution Approach 2:
The system changes the wavelength parameter of the lighting device based on detected conditions. The control device adjusts the lighting parameter (wavelength) from first wavelength to second wavelength when collision risk is detected, and reverses when safe, allowing the same lighting device to serve multiple functions through parameter adjustment rather than requiring separate systems
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
The system effectively prevents collisions by providing a clear and urgent visual warning to occupants, enhancing safety and reducing the risk of accidents when exiting the vehicle.
Implementation Method 1
The first vehicle-side sensor device can include radar sensors, for example, which can be arranged in side mirrors or bumpers of the motor vehicle
Implementation Method 2
the lighting device emits light with a first wavelength, and, if the distance detected by the first vehicle-side sensor device falls below a predetermined minimum distance, to provide a second operating mode for the lighting device, in which the lighting device emits light with a second wavelength
Data Source
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AI summary
The invention relates to a driver assistance system (2) for assisting a person in exiting a motor vehicle (1), comprising a first vehicle-side sensor device (4) for detecting the distance between at least one object (O) in an area (U) surrounding the motor vehicle (1) and the motor vehicle (1) when the motor vehicle (1) is parked, wherein the driver assistance system (2) comprises a lighting device (10) for generating a light strip by emitting light (20) along a predetermined contour into an interior of the motor vehicle (1) and a control device (8), wherein the control device (8) is configured to provide a first operating mode for the lighting device (10) in which the lighting device (10) emits light (20) with a first wavelength, and, if the distance detected by the first vehicle-side sensor device (4) falls below a predetermined minimum distance,to provide a second operating mode for the lighting device (10) in which the lighting device (10) emits light (20) with a second wavelength.