Windscreen Camera Placement for Automated Wiping and Visibility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional windscreen wiping and washing systems in vehicles are limited by the placement and field of view of optical sensors, which can impair the driver's view and provide incomplete analysis of the windscreen, especially in harsh weather conditions.
Innovation Solution
A camera assembly is positioned on the windscreen with an angle between 25 and 75 degrees, capturing a wide-angle field of view that includes at least 60% of the windscreen, allowing for precise determination of the windscreen state and efficient management of the wiping, cleaning, and heating systems based on processed images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an optical sensor is positioned inside the windscreen to detect raindrops and automatically activate the wiping system, then the wiping system can be automatically activated when raindrops are detected, but the optical sensor placement impairs the driver's view field and provides incomplete windscreen analysis due to narrow field of view
Solution Approach 1:
The optical sensor is extracted from its conventional position inside the windscreen and relocated to the top of the windscreen. This extraction removes the sensor from the driver's direct view path, eliminating the view field impairment while maintaining the automatic detection and activation capability for raindrop detection and windscreen state monitoring
Solution Approach 2:
The sensor positioning transitions from a two-dimensional plane inside the windscreen to a three-dimensional position at the top of the windscreen. This dimensional change enables a broader field of view that captures the entire windscreen surface, allowing complete windscreen analysis while preserving driver visibility
2Measurement precision
If a camera assembly is positioned on the top of the windscreen with an angle between 25 and 75 degrees to capture a wide angle field of view including at least 60% of the windscreen, then comprehensive windscreen state analysis is achieved, but the system complexity increases
Solution Approach 1:
The camera assembly is positioned at a specific location (top of the windscreen) with a specific angular range (25-75 degrees) to optimize the field of view. This localized positioning provides high-quality coverage of at least 60% of the windscreen surface, enabling precise detection of windscreen state (rain, snow, dirt, fog) while maintaining a manageable system configuration
Data Source
AI summary
The invention relates to a management method of an assistance system for a windscreen of a cab of a vehicle, the vehicle comprising a camera assembly including at least one camera located on the top of the windscreen with an angle between 25° and 75° with respect to the windscreen, for providing a captured image of a wide angle field of view located in front of the vehicle, said wide angle field of view comprising a first front field of vision, a second field of vision of a front-view and a third rear field of the vision, the method comprising:Determining a state of the windscreen using the at least one camera andProcessing the captured image, according to the state of the windscreen, to operate the windscreen system on the windscreen.