Exterior Camera Soiling Detection and Driver Alert Method
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Solution Overview
Problem
Existing motor vehicle systems fail to ensure the safety and reliability of exterior cameras by not adequately informing drivers of camera contamination before starting a journey, leading to potential safety hazards due to obstructed views.
Innovation Solution
A method that automatically detects camera soiling and alerts the driver through visual, acoustic, or vibration signals before the vehicle is started, allowing for immediate cleaning and ensuring safe operation, which can be implemented without additional hardware beyond existing vehicle systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exterior cameras are used to provide visual information to drivers, then driver awareness of surrounding area is improved, but camera lens contamination obstructs the view and reduces safety
Solution Approach 1:
The system performs contamination detection before the driver enters the vehicle or starts the engine, allowing the driver to clean the camera lens in advance. This preliminary detection prevents contaminated images from being captured during actual driving operations.
Solution Approach 2:
The system provides visual feedback to the driver through display devices (instrument panel, head-up display, or mobile device) when contamination is detected. This feedback loop enables the driver to take corrective action by cleaning the camera lens.
2Reliability
If contamination detection is performed continuously, then camera cleanliness is monitored reliably, but energy consumption and processing load increase
Solution Approach 1:
The system performs contamination detection periodically at specific moments (when the driver approaches the vehicle, upon entry, or before engine start) rather than continuously during all operating conditions. This periodic approach maintains detection reliability while significantly reducing energy consumption and processing load.
3Ease of operation
If multiple display devices are used to alert the driver of contamination, then driver notification is improved, but device complexity increases
Solution Approach 1:
The system can utilize existing multi-functional display devices already present in the vehicle (instrument panel displays, head-up displays, or mobile device screens) to provide contamination notifications. This approach improves driver notification without adding dedicated display hardware, thereby avoiding increased device complexity.
4Reliability
If the driver is informed of camera contamination before entering the vehicle, then driver safety is improved, but the driver may forget to clean the camera
Solution Approach 1:
The system notifies the driver of contamination before the driver enters the vehicle or starts the engine, creating a natural opportunity for the driver to clean the camera lens immediately. This timing ensures the driver is aware of the issue before other tasks distract attention.
Solution Approach 2:
The system provides clear visual feedback through multiple display channels (instrument panel, head-up display, or mobile device) that captures the driver's attention at the moment of vehicle approach or entry, prompting immediate cleaning action before driving begins.
Data Source
Figure 1
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AI summary
The invention relates to a method for operating a motor vehicle (10) having at least one exterior camera (12, 14, 16), having the following steps: detecting whether the motor vehicle (10) is activated, in particular before a driver enters the motor vehicle (10), determining whether the at least one exterior camera (12, 14, 16), in particular a lens (20) and/or a cover of the exterior camera (12, 14, 16) is soiled, and outputting at least one signal in the case of determined soiling and detected operation. The invention also relates to a motor vehicle (10) having an open-loop or closed-loop control device which is configured to carry out the method.