Vehicle Lane Position Display Using Virtual Overlay
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Solution Overview
Problem
Existing driver assistance systems fail to provide drivers with immediate and clear information about the extent to which their vehicle has deviated from a lane, making it difficult for them to take appropriate corrective actions.
Innovation Solution
A driver assistance system that optically detects lane markings and displays a corresponding model lane on a display device, allowing drivers to see their vehicle's position relative to the lane in real-time, using a reversing video camera and position determination device to calculate and display the vehicle's position, enabling accurate lateral attitude and position determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acoustic warning signals are used to alert drivers about lane departure, then drivers receive timely warnings, but drivers cannot immediately recognize the extent of lane deviation
Solution Approach 1:
The patent creates a virtual copy of the lane (display lane) that is overlaid on the driver's field of view, showing the actual lane position and vehicle location. This visual copy provides immediate information about the extent of lane deviation without requiring the driver to interpret acoustic signals, thus resolving the information loss while maintaining warning reliability.
Solution Approach 2:
The patent transitions from one-dimensional acoustic warning signals to a two-dimensional visual display that shows the lane position and vehicle location spatially. This dimensional enhancement allows drivers to immediately perceive the extent of lane deviation in the visual field, complementing the acoustic warnings with spatial information.
2Loss of information
If visual displays of lane position are implemented, then drivers can immediately recognize lane deviation extent, but system complexity increases
Solution Approach 1:
The patent makes the display device serve multiple functions: it displays navigation information, vehicle status, and lane position information (including the virtual lane overlay). By making the display universal, the system avoids adding dedicated complex hardware for lane visualization, thus reducing overall system complexity while providing comprehensive lane deviation information.
Solution Approach 2:
The patent merges the lane detection function with the existing display device, combining multiple functions (navigation display, vehicle status display, and lane position visualization) into a single integrated system. This consolidation reduces the number of separate components needed, thereby reducing system complexity while maintaining the ability to provide immediate lane deviation information.
Data Source
AI summary
The invention relates to a driver assistance system (101) for a vehicle (401), comprising: an image-capturing device (103) for visually capturing a lane (403), a display device (409) for displaying a display lane corresponding to the visually captured lane (403), and a position-determining device (411) for determining a vehicle position relative to the lane (403), wherein the display device (409) is also configured to display the vehicle position relative to the displayed display lane. The invention also relates to a driver assistance method for a vehicle (401) and to a vehicle (401) having a driver assistance system (101).