Extrapolation Lane Duration Control for Driving Support
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Solution Overview
Problem
Existing driving support apparatuses fail to provide effective support when the cruising lane cannot be detected, as they rely on inappropriate setting conditions for extrapolation lanes.
Innovation Solution
A driving support apparatus that includes a cruising lane detecting means, an extrapolating means for setting an extrapolation lane, an extrapolation time deciding means based on vehicle distance and lateral speed, and a deviation determining means to assess the need for support, ensuring appropriate driving support even when the cruising lane is undetectable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an extrapolation cruising lane is set when the cruising lane cannot be detected, then driving support can continue to be performed, but the driving support becomes inappropriate if the extrapolation conditions are not properly controlled
Solution Approach 1:
The patent applies dynamics by making the extrapolation time period variable rather than fixed. The extrapolation time is dynamically adjusted based on vehicle speed and distance to the previously detected cruising lane, allowing the system to adapt to different driving conditions and maintain appropriate accuracy levels while ensuring continuous driving support availability.
Solution Approach 2:
The patent changes the parameter of extrapolation time period based on vehicle operating conditions. By adjusting the time period according to vehicle speed and distance parameters, the system optimizes the balance between maintaining driving support continuity and preserving lane position accuracy for appropriate driving assistance.
2Device complexity
If the extrapolation time period is fixed, then the system is simple to implement, but it cannot adapt to different vehicle speeds and distances leading to inappropriate support timing
Solution Approach 1:
The system transitions from a static fixed time period to a dynamic variable time period that automatically adjusts based on vehicle speed and distance to the previously detected cruising lane. This dynamic approach enhances adaptability to different driving conditions while maintaining reasonable system complexity through algorithmic control.
Solution Approach 2:
The system incorporates feedback mechanisms by continuously monitoring vehicle speed and distance to the previously detected cruising lane, then using this information to adjust the extrapolation time period. This feedback loop enables the system to adapt to changing driving conditions and provide appropriate driving support timing.
3Duration of action of stationary object
If driving support is provided based on extrapolation when the lane is not detected, then support continuity is maintained, but unnecessary support may be provided reducing user trust
Solution Approach 1:
The patent uses dynamic adjustment of the extrapolation time period based on vehicle speed and distance parameters to optimize support continuity. By adapting the time period to current driving conditions, the system maintains support availability while minimizing unnecessary support actions that could erode user trust through inappropriate alerts.
Data Source
AI summary
A driving support apparatus is provided that supports driving of a vehicle that is traveling on a road. In the apparatus, a cruising lane on the road is detected. When the cruising lane cannot be detected, an extrapolation cruising lane formed by extrapolating a previously detected cruising lane is set. A length of time over which the extrapolation cruising lane is set is decided based on the distance between the previously detected cruising lane and the vehicle and/or a lateral speed of the vehicle. Furthermore, whether or not the vehicle will deviate from the detected cruising lane or the set extrapolation cruising lane within a reference time that is set in advance is determined. Driving support is performed based on the determination result.