Driving Assistance Area Control for Lane-Change Alert Timing
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Solution Overview
Problem
Conventional surroundings monitoring devices fail to provide timely notice to drivers about moving objects in areas where lane changes are imminent, as they cannot account for restraining objects that disappear before the lane changeable area, leading to potential contact risks.
Innovation Solution
A driving assistance device that adjusts the scope of the driving assistance area based on the presence and absence of restraining objects, issuing alerts only when the restraining object is determined to be absent from the vehicle's path, thereby ensuring timely notification to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving assistance area is restricted to the area from the vehicle to the restraining object when the restraining object exists, then false alerts are reduced, but timely notice cannot be given before the lane changeable area
Solution Approach 1:
The patent applies dynamics by making the driving assistance area scope adjustable rather than fixed. The control device dynamically changes the scope based on whether the restraining object exists ahead of the vehicle. When the restraining object is detected ahead, the scope is restricted to prevent false alerts; when not detected, the scope is expanded to provide timely notice before the lane changeable area. This dynamic adjustment resolves the contradiction between alert accuracy and notice timing.
2Ease of operation
If notice is given before the restraining object ceases to exist, then driver annoyance increases, but contact prevention is compromised
Solution Approach 1:
The patent applies parameter changes by modifying the spatial parameter (scope of driving assistance area) based on the presence of the restraining object. When the restraining object exists ahead, the scope parameter is reduced to exclude the area beyond the restraining object, preventing false alerts and improving driver experience. When the restraining object is not present, the scope parameter is expanded to include the area before the lane changeable area, ensuring collision prevention. This conditional parameter adjustment resolves the contradiction between driver experience and collision prevention.
Data Source
AI summary
A driving assistance device for a vehicle is configured to: give notice to a driver when a moving object existing around the vehicle exists in the scope of a driving assistance area that is set around the vehicle; restrict the scope of the driving assistance area to an area from the vehicle to a restraining object when the restraining object exists on a side of the vehicle, the restraining object restraining the moving object from entering a travel lane in which the vehicle travels; and lift the restricting of the scope of the driving assistance area when it is determined that the restraining object does not exist ahead of the vehicle.