Vehicle Hazard Avoidance Control With Minimal Driver Intervention
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Solution Overview
Problem
Existing obstacle avoidance systems for human-operated vehicles interfere with the driver's control, as they either generate alternative paths that deviate from the operator's intentions or apply unnecessary interventions, lacking effective determination of when interventions are necessary and considering the vehicle's current motion and driving intentions.
Innovation Solution
A driving assistance system that uses on-board perception to detect hazards and adjust unsafe driving commands minimally, ensuring seamless assistance by computing a range of safe driving commands based on hazard locations, vehicle dynamics, and safety clearances, without generating alternative paths, thus respecting the operator's intentions and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hazard avoidance systems generate alternative paths to avoid obstacles, then collision-free navigation is achieved, but the operator's control and driving intentions are interfered with
Solution Approach 1:
The system introduces a safety verification intermediary layer that mediates between the operator's driving commands and the vehicle's actual motion. Instead of directly generating alternative paths that override operator control, the system verifies the safety of operator commands and only intervenes when hazards are detected, thus maintaining operator control while ensuring hazard avoidance
Solution Approach 2:
The system inverts the conventional approach by not generating alternative paths proactively, but rather by verifying the safety of the operator's intended path and only correcting commands when necessary. This inversion maintains operator control as the primary decision-maker while the system provides safety assurance
2Reliability
If hazard avoidance systems continuously monitor and adjust driving commands, then safety is improved, but unnecessary interventions occur that disrupt normal driving
Solution Approach 1:
The system applies preliminary safety verification to operator commands before they are executed. By pre-assessing whether commands would lead to hazardous situations and only intervening when necessary, the system prevents harmful interventions rather than correcting them after they occur, thus reducing unnecessary disruptions to normal driving
Solution Approach 2:
The system implements feedback mechanisms that continuously monitor both the operator's commands and the environmental hazard conditions. This feedback loop allows the system to distinguish between safe and unsafe commands, intervening only when hazards are actually present, thereby avoiding unnecessary interventions while maintaining safety
3Reliability
If path-altering methods are used to avoid hazards, then collision-free paths are generated, but the operator experiences loss of control and interference
Solution Approach 1:
The system empowers the operator to maintain control authority by having the system serve as a safety assistant rather than a control takeover. The operator's commands are respected and executed directly when safe, with the system providing self-service safety verification instead of imposing alternative paths, thus maintaining control authority while ensuring collision avoidance
Data Source
AI summary
The present disclosure provides a driving assistance method and system for a mobile vehicle to avoid hazards in its environment. This system can detect hazards in a vehicle's surroundings and unobtrusively adjust its driving module's driving commands when necessary to avoid hazards. The system is configured to allow it to provide interference-free assistance to the operator of a human-operated vehicle or the motion controller of an autonomous vehicle to avoid hazards.