Driver Assistance Device Collision Avoidance Timing
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Solution Overview
Problem
Conventional driver assistance devices may execute collision avoidance assist operations unnecessarily, as they do not adequately consider the driver's perception of another vehicle on a collision course, leading to potential confusion or mistrust from the driver.
Innovation Solution
A driver assistance device that includes a controller to acquire information about another vehicle's location relative to the host vehicle, determine if the vehicle is on a collision course, and adjust the execution conditions for the collision avoidance assist operation based on the approaching direction and the driver's visual perception of the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the collision avoidance assist operation is executed based on conventional detection methods, then the collision risk is reduced, but the driver may perceive the operation as unnecessary or doubtful when the driver has already perceived the another vehicle
Solution Approach 1:
The system incorporates driver perception feedback by monitoring whether the driver has visually perceived the another vehicle through eye tracking or attention detection technologies. This feedback mechanism allows the system to adjust its collision avoidance assist operation timing based on the driver's actual perception state, preventing unnecessary interventions when the driver is already aware of the hazard.
Solution Approach 2:
The execution condition for collision avoidance assist operation is made dynamic by adjusting it based on the approaching direction of the another vehicle and the driver's visual perception state. The system adapts the intervention timing according to real-time conditions, particularly when the another vehicle is approaching from the driver's seat side versus passenger's seat side, optimizing both safety and driver acceptance.
2Reliability
If the collision avoidance assist operation is executed early to ensure safety, then collision risk is reduced, but the operation may be executed even when the driver has already perceived the another vehicle
Solution Approach 1:
The system uses real-time feedback from driver monitoring systems to determine whether the driver has perceived the another vehicle. This feedback allows the system to delay or suppress collision avoidance assist operations when the driver is already aware, avoiding unnecessary interventions while maintaining safety when the driver has not yet perceived the hazard.
Solution Approach 2:
The system performs preliminary assessment of driver perception state before executing collision avoidance assist operations. By evaluating the driver's visual attention and the another vehicle's approach characteristics in advance, the system can determine the appropriate timing for intervention, ensuring safety while avoiding premature operations.
3Reliability
If the execution condition is adjusted based on approaching direction and visual perception, then the collision avoidance timing becomes more appropriate, but the device complexity increases
Solution Approach 1:
The controller integrates multiple functions including another vehicle detection, approaching direction determination, driver visual perception monitoring, and collision avoidance assist operation execution within a single control unit. This multi-functional approach allows the system to handle complex decision-making based on multiple parameters without requiring separate dedicated devices for each function.
Solution Approach 2:
The system merges the detection of another vehicle, determination of approach direction, assessment of driver perception state, and control of collision avoidance operations into an integrated control system. By combining these functions, the system achieves accurate timing determination while reducing overall system complexity through functional integration.
Data Source
AI summary
The driver assist ECU determines whether there is another vehicle on the collision course based on the other vehicle information. ECU determines whether a predetermined execution condition for executing the collision avoidance assist operation is satisfied when it is determined that there are other vehicles on the collision course, and starts executing the collision avoidance assist operation when it is determined that the execution condition is satisfied. ECU changes the execution condition based on an approaching direction determination result as to whether the other vehicle on the collision course is approaching from the direction of the driver's seat of the host vehicle or is approaching from the direction on the passenger seat of the host vehicle, and a visual perception determination result as to whether the probability that the driver of the host vehicle has visually perceived the other vehicle on the collision course is high.