Driving Support Apparatus Intersection Arrow Deletion
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Solution Overview
Problem
Conventional driving support apparatuses struggle to accurately execute support controls at intersections, particularly on one-lane roads with no traffic lights, as they often erroneously apply road arrow information from a previous intersection to a subsequent one due to difficulty in detecting the latter.
Innovation Solution
A driving support apparatus equipped with a camera to capture image data and a controller that stores and deletes road arrow information based on specific conditions, including the detection of intersections and travel distances, to prevent erroneous application of turn directions, with shorter delete distances applied when on one-lane roads to reduce misapplication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conventional apparatus uses a fixed threshold distance to delete road arrow information, then the system is simple to operate, but the reliability of support control deteriorates on one-lane roads where intersections are difficult to detect
Solution Approach 1:
The patent applies dynamics by changing the delete distance from a fixed value to a variable value that adapts to different road conditions. The controller dynamically adjusts the delete distance based on whether the vehicle is traveling on a one-lane road or a multi-lane road, making the system flexible and adaptive to varying operational environments rather than using a static threshold
Solution Approach 2:
The patent implements parameter changes by modifying the delete distance parameter according to the road type. When a one-lane road is detected, the system changes the delete distance parameter to a shorter value, whereas on multi-lane roads it uses a longer delete distance, thereby optimizing the system's reliability for different driving scenarios
2Duration of action of stationary object
If the apparatus deletes road arrow information after a long distance, then information is preserved for potential future use, but erroneous application to subsequent intersections increases on one-lane roads
Solution Approach 1:
The patent applies local quality by implementing different information retention durations for different road types. Instead of using a uniform retention period, the system locally adapts the delete distance parameter based on the specific road condition (one-lane vs. multi-lane), ensuring that road arrow information is retained appropriately for each local context
Solution Approach 2:
The system changes the retention duration parameter (delete distance) based on detected road conditions. For one-lane roads, the parameter is adjusted to a shorter value to prevent erroneous application, while for multi-lane roads it maintains a longer value, thereby optimizing both information retention and control accuracy
3Loss of time
If the apparatus uses a longer delete distance, then road arrow information is available for longer periods, but the likelihood of misapplication to wrong intersections increases
Solution Approach 1:
The patent resolves this contradiction by making the delete distance dynamic rather than static. The system continuously monitors road conditions and adjusts the delete distance accordingly, allowing the information availability period to adapt to the specific driving environment, thus preventing misapplication while maintaining necessary information retention
Data Source
AI summary
A driving support apparatus comprises a camera, and a controller for executing a support control for supporting the vehicle turning at an intersection. The controller stores a prohibited direction in which a road arrow marked on a lane prohibits the vehicle from turning. The controller executes the support control when the controller detects the intersection and a turn direction is not the prohibited direction. The controller deletes the prohibited direction when the vehicle travels on a lane that is not a one-lane on one side and a travel distance after the vehicle passes through the road arrow is equal to or longer than a first delete distance, and deletes the prohibited direction when the vehicle travels on the one-lane on one side and the travel distance is equal to or longer than a second delete distance shorter than the first delete distance.