Dynamic Warning Area Adjustment for Vehicle Turn Detection
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Solution Overview
Problem
Existing driving assistance systems fail to adequately detect and notify drivers of approaching vehicles when the vehicle is turning at an intersection, leading to concerns about driving safety as the warning area is not effectively managed during the transition from turning to normal traveling state.
Innovation Solution
A driving assistance apparatus that includes an object detector, area setter, determiner, and area changer, which dynamically adjusts the warning area based on the vehicle's turn status and traveling state by reducing the area during turns and expanding it after the turn is completed, using sensors like radar and cameras to monitor the vehicle's surroundings and determine the turn initiation and completion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If the warning area is reduced during turning at an intersection, then unnecessary notifications are suppressed, but detection of approaching vehicles after turn completion is inadequate
Solution Approach 1:
The patent applies dynamics by making the warning area dynamically adjustable based on vehicle state. The control unit changes the warning area size according to whether the vehicle is turning or in normal traveling state, allowing the system to adapt to different operational conditions and resolve the contradiction between suppressing false alarms and maintaining detection reliability
Solution Approach 2:
The patent changes the parameter of warning area size based on vehicle operating conditions. By detecting turn status through steering angle sensors and other detectors, the system modifies the warning area parameters (expanding during turns, maintaining after completion) to appropriately balance notification suppression with vehicle detection capability
2Reliability
If the warning area is expanded to detect vehicles after turn completion, then detection capability is improved, but unnecessary notifications occur during the turn
Solution Approach 1:
The system dynamically adjusts the warning area based on real-time vehicle state detection. By continuously monitoring steering angle, vehicle speed, and turn completion status, the control unit appropriately expands or maintains the warning area only when needed, avoiding unnecessary notifications during active turns while ensuring detection capability after turn completion
Solution Approach 2:
The patent implements feedback control by using detectors (steering angle sensor, vehicle speed sensor, etc.) to monitor vehicle state and feed this information back to the control unit. The control unit then adjusts the warning area accordingly, creating a closed-loop system that resolves the contradiction by responding to actual vehicle conditions
3Reliability
If the warning area remains constant, then detection coverage is maintained, but unnecessary notifications occur during turning maneuvers
Solution Approach 1:
The patent transforms the static warning area into a dynamic one that adapts to vehicle maneuvers. By detecting turn initiation and completion through sensors and control logic, the system adjusts the warning area to be expanded during turns and maintained after completion, eliminating unnecessary notifications while preserving detection coverage
Solution Approach 2:
The system changes the warning area parameters based on detected vehicle state. When a turn is detected, the parameter changes to expand the warning area; when turn completion is detected, the parameter changes to maintain the expanded area, thereby resolving the contradiction between constant coverage and notification suppression
Data Source
AI summary
In a driving assistance apparatus, an area setter is configured to set a warning area on at least one of a left rear side and a right rear side of a subject vehicle. A notifier is configured to provide a notification in response to an object detector detecting an object in the warning area. A determiner is configured to determine initiation and completion of a turn at an intersection during turning of the subject vehicle at the intersection. An area changer is configured to, in response to the determiner determining the initiation of the turn, reduce the warning area in a direction approaching the subject vehicle, and in response to the determiner determining the completion of the turn, expand the reduced warning area according to a traveling state of the subject vehicle after the completion of the turn.