Anticipatory Vehicle Control System for Convoy Hazard Evaluation
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Solution Overview
Problem
Existing vehicle control systems lack effective methods to enhance safety during obstacle avoidance in vehicle convoys, particularly when the view of oncoming traffic is restricted, leading to unreliable hazard evaluations and increased accident risks.
Innovation Solution
A method and device for controlling an ego-vehicle that determines and adapts its driving strategy based on the surroundings, compares and modifies its strategy with the vehicle in front, performs hazard evaluations, and implements emergency strategies like reduced speed or braking to avoid collisions, while considering the dimensions of the lead vehicle and the risk of oncoming traffic, ensuring the ego-vehicle stays in its lane and avoids increased accident risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ego-vehicle adopts the driving strategy of the vehicle driving in front during obstacle avoidance, then the coordination and safety in the vehicle convoy is improved, but the reliability of hazard evaluation deteriorates when the view of oncoming traffic is restricted
Solution Approach 1:
The system continuously monitors the driving strategies of the lead vehicle and feeds this information back to the ego-vehicle's control system. When the lead vehicle executes an avoidance maneuver, the ego-vehicle detects this strategy and adjusts its own behavior accordingly, creating a feedback loop that improves convoy coordination while maintaining safety through continuous evaluation
Solution Approach 2:
The system performs preliminary hazard evaluation before fully adopting the lead vehicle's avoidance strategy. By assessing the situation in advance and comparing it with stored hazard patterns, the system can anticipate potential risks and prepare appropriate responses, reducing the loss of information during critical decision-making moments
2Adaptability or versatility
If the ego-vehicle performs avoidance maneuver onto the other lane, then the obstacle avoidance capability is improved, but the risk of collision with oncoming traffic increases when view is restricted
Solution Approach 1:
Before executing an avoidance maneuver onto the other lane, the system performs a preliminary check for oncoming traffic by analyzing available sensor data and comparing it with stored hazard patterns. This preliminary anti-action prevents the ego-vehicle from entering situations where collision risk is high, countering the potential harmful effect before it can materialize
Solution Approach 2:
The system introduces an intermediary hazard evaluation layer between the decision to avoid obstacles and the actual execution of the avoidance maneuver. This intermediary layer processes sensor information, compares it with known hazard patterns, and mediates the final decision, reducing the direct link between obstacle detection and risky avoidance actions
3Reliability
If the ego-vehicle reduces speed to improve hazard evaluation, then the safety is improved, but the productivity of the vehicle convoy deteriorates
Solution Approach 1:
Instead of continuously reducing speed, the system applies partial speed reduction only when and where hazard evaluation is needed. By selectively slowing down during critical evaluation moments and maintaining normal speed otherwise, the system achieves adequate hazard assessment accuracy while minimizing the impact on convoy productivity
Solution Approach 2:
The system implements periodic hazard evaluation at strategically chosen intervals rather than continuous speed reduction. This periodic approach allows the ego-vehicle to maintain higher average speeds while still performing necessary safety assessments, balancing reliability and productivity through time-based segmentation of evaluation actions
Data Source
AI summary
The disclosure relates to a control system and to a device for an ego-vehicle in a vehicle convoy in the case of the avoidance of an obstacle. Before the ego-vehicle follows an adopted avoidance trajectory of a vehicle driving in front, a hazard evaluation of the driving strategy of the vehicle driving in front is performed and the avoidance trajectory is modified on the basis of the result of the hazard evaluation.