Driving Support Arbitration for Collision Avoidance Priority
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Solution Overview
Problem
When both vehicle-infrastructure cooperative systems and collision avoidance support systems are installed in a vehicle, the simultaneous satisfaction of their support conditions can lead to confusion for the driver, as the information provided by each system has different urgency and action requirements, potentially resulting in inappropriate transmission of collision avoidance instructions.
Innovation Solution
A driving support apparatus that includes externally transmitted information acquisition, own vehicle information acquisition, first notification means for driving support, obstacle detection, second notification means for collision avoidance, and arbitration means to inhibit the first notification when both conditions are satisfied, ensuring the driver receives appropriate collision avoidance notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If both vehicle-infrastructure cooperative system and collision avoidance support system are installed to provide comprehensive driving support, then the completeness of driving support information is improved, but the clarity and urgency of notification to the driver deteriorates due to simultaneous notifications causing confusion
Solution Approach 1:
The notification arbitration unit acts as an intermediary between the vehicle-infrastructure cooperative system notification unit and the collision avoidance support system notification unit. It receives notification requests from both systems and determines which notification to output based on priority rules, thereby resolving the conflict between comprehensive information provision and clear notification delivery.
Solution Approach 2:
The system applies different notification priorities to different notification sources based on their urgency and importance. Collision avoidance notifications are assigned high priority while vehicle-infrastructure cooperative system notifications are assigned low priority, allowing the system to maintain completeness while ensuring critical information receives appropriate attention.
2Adaptability or versatility
If both systems operate independently to provide their respective notifications, then the functionality of each system is preserved, but the reliability of collision avoidance notification transmission deteriorates when both conditions are simultaneously satisfied
Solution Approach 1:
The notification arbitration unit serves as a mediator that receives notification requests from both independent systems and determines the output priority. When both systems generate notifications simultaneously, the arbitration unit ensures collision avoidance notifications are transmitted reliably by giving them higher priority, thus preserving both system functionalities while ensuring reliable critical notification delivery.
3Loss of information
If simultaneous notifications from both systems are provided to the driver, then all relevant information is transmitted, but the driver's ability to respond appropriately deteriorates due to difficulty in determining immediate actions
Solution Approach 1:
The system assigns different priority levels to different notification types based on their urgency. Collision avoidance notifications are given high priority to ensure immediate driver response, while vehicle-infrastructure cooperative system notifications are given low priority. This differential treatment reduces information overload and enables faster driver response to critical situations.
Solution Approach 2:
The notification arbitration unit mediates between simultaneous notification requests by evaluating their priority levels. It selects and outputs only the high-priority collision avoidance notification when both systems are active, preventing information overload and enabling the driver to respond quickly to the most urgent situation without being distracted by less critical information.
Data Source
AI summary
When an own vehicle is highly likely to collide with an obstacle, a notification of prompting a driver to carry out a collision avoidance operation is appropriately given. When an output request for collision avoidance support information exists, a notification ECU notifies of the collision avoidance support information irrespective of absence/presence of an output request for vehicle-infrastructure cooperation support information. When the output request for the collision avoidance support information does not exist and the output request for the vehicle-infrastructure cooperation support information exists, the notification ECU notifies of the vehicle-infrastructure cooperation support information. Thus, when the conditions for the notification of the vehicle-infrastructure cooperation support information and the collision avoidance support information are simultaneously satisfied, the vehicle-infrastructure cooperation support information is inhibited from being notified and the collision avoidance support information is notified.