Deceleration Assistance Control for Suppressing Repeated Driver Alerts
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Solution Overview
Problem
Existing driving assistance systems cause driver discomfort by issuing deceleration assistance termination notifications that are followed quickly by the start of assistance for a new deceleration-triggering object, leading to frequent notifications that disrupt the driving experience.
Innovation Solution
A driving assistance apparatus that includes a start condition determination unit, termination condition determination unit, notification unit, second deceleration-triggering object detection unit, and quick resumption condition determination unit, which collectively determine whether to issue deceleration assistance termination notifications based on distance and relative speed, avoiding notifications when the next deceleration assistance is imminent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If deceleration assistance termination notification is issued when termination condition is satisfied, then the driver is informed of assistance termination, but driver discomfort occurs when notification is followed quickly by next deceleration assistance
Solution Approach 1:
The system performs preliminary detection of a second deceleration-triggering object before issuing the termination notification for the first object. By detecting the presence and characteristics of the upcoming trigger object in advance, the system can predict whether a termination notification would cause driver discomfort, and suppress the notification accordingly. This preliminary action prevents the harmful effect before it occurs.
Solution Approach 2:
The system uses feedback from the quick resumption condition determination unit, which analyzes the relationship between the first and second deceleration-triggering objects (distance, relative speed, time to collision). This feedback mechanism allows the notification unit to make an informed decision about whether to issue the termination notification based on the predicted driver experience, thereby resolving the contradiction between informing the driver and avoiding discomfort.
2Reliability
If deceleration assistance is provided for multiple deceleration-triggering objects in succession, then continuous safety monitoring is maintained, but frequent termination notifications disrupt driving experience
Solution Approach 1:
The second deceleration-triggering object detection unit continuously monitors for upcoming trigger objects in advance. By detecting the second object before the first assistance terminates, the system can predict the need for continuous monitoring and suppress unnecessary termination notifications, thereby maintaining reliability while improving ease of operation.
Solution Approach 2:
The system changes the notification parameter (whether to issue termination notification) based on the calculated quick resumption condition parameters (distance to second object, relative speed, time to collision). When these parameters indicate imminent resumption, the notification is suppressed. This dynamic parameter change resolves the contradiction by adapting the notification behavior to the specific driving context.
Data Source
AI summary
A driving assistance apparatus is configured to determine whether a preset deceleration assistance start condition is satisfied, start deceleration assistance for a driver's vehicle against a first deceleration-triggering object, determine whether a preset deceleration assistance termination condition is satisfied, issue a deceleration assistance termination notification to a driver of the driver's vehicle, determine whether a second deceleration-triggering object is detected ahead of the driver's vehicle, and determine whether a preset quick resumption condition is satisfied. The driving assistance apparatus is configured not to issue the deceleration assistance termination notification when the driving assistance apparatus determines that the quick resumption condition is satisfied, even in a case where the driving assistance apparatus determines that the deceleration assistance termination condition for the first deceleration-triggering object is satisfied.