Automated Driving Risk Avoidance Using Operator Risk Feedback
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Solution Overview
Problem
Existing automated driving systems do not adequately consider an operator's sense to appropriately secure a safety margin between the vehicle and obstacles, potentially leading to inadequate risk avoidance during automated driving.
Innovation Solution
A vehicle control system that includes processors to execute automated driving control, which incorporates risk avoidance control activated based on notifications from the operator regarding the risk level, adjusting activation conditions and control amounts to enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the automated driving vehicle changes speed according to operator's operation during automated driving, then the operator's sense is taken into consideration, but the safety margin between the vehicle and obstacles may not be appropriately secured
Solution Approach 1:
The system dynamically adjusts the risk avoidance control strategy based on the operator's risk level notification. When risk level increases, the system transitions from a conservative approach to a more aggressive risk avoidance mode, dynamically modifying control parameters such as lateral distance maintenance and deceleration planning to appropriately respond to operator concerns while maintaining safety
Solution Approach 2:
The system changes key control parameters including probability density distribution variance, lateral distance to target, and deceleration plans based on the operator's risk level notification. These parameter adjustments allow the system to balance operator comfort with safety requirements by modifying the control amount in risk avoidance control
2Reliability
If the risk avoidance control is activated with strict conditions to ensure safety, then collision avoidance is improved, but the system may not respond appropriately to operator's risk perception
Solution Approach 1:
The system incorporates operator feedback through risk level notifications to adjust the risk avoidance control activation conditions. The operator's perception of risk serves as feedback that modifies the system's behavior, allowing the strictly conditioned risk avoidance control to adapt to operator concerns while maintaining its safety-oriented activation criteria
Solution Approach 2:
The activation conditions and control parameters of risk avoidance control are dynamically adjusted based on operator feedback. The system transitions between different control modes depending on the operator's risk level notification, making the rigid safety protocol flexible enough to respond to human perception while maintaining safety standards
Data Source
AI summary
A vehicle control system includes one or more processors configured to execute automated driving control that controls automated driving of a vehicle. The automated driving control includes risk avoidance control that avoids a collision with a target around the vehicle. When a notification representing a risk level around the vehicle is received from an operator during the automated driving control, the one or more processors are configured to relax an activation condition of the risk avoidance control or increase a control amount in the risk avoidance control as the risk level becomes higher.