Parked Vehicle Collision Avoidance Using Steering Torque Control
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Solution Overview
Problem
Autonomous vehicles are unable to effectively prevent collisions when parked or stopped, as they lack the capability to detect and respond to approaching vehicles, leading to inevitable accidents.
Innovation Solution
A method for controlling collision avoidance in vehicles, which involves monitoring approaching vehicles, determining a collision index, and applying driving and braking torques to steer the vehicle clear of potential collisions using an autonomous driving controller, detection systems, and torque control mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the autonomous driving controller performs collision avoidance control during traveling, then collision avoidance capability is improved, but the vehicle remains vulnerable to collisions when parked or stopped
Solution Approach 1:
The autonomous driving controller is enhanced to perform collision avoidance functions across multiple operational states (both traveling and parked/stopped states), making it universally applicable regardless of vehicle motion status. The controller monitors approaching vehicles and executes collision avoidance maneuvers in both moving and stationary conditions.
Solution Approach 2:
The system dynamically adapts its monitoring and response behavior based on the vehicle's operational state. When parked or stopped, the controller activates specific monitoring for approaching vehicles and executes targeted collision avoidance maneuvers, transitioning between different operational modes to optimize safety responses.
2Reliability
If the vehicle monitors approaching vehicles and executes collision avoidance maneuvers when parked or stopped, then safety is improved, but energy consumption increases
Solution Approach 1:
The detection portion performs periodic monitoring of approaching vehicles at predetermined time intervals rather than continuous monitoring. This periodic action reduces energy consumption while maintaining safety by detecting significant changes in the approaching vehicle's position or speed that indicate potential collision risk.
Solution Approach 2:
The system implements feedback mechanisms where the autonomous driving controller continuously receives information from the detection portion about approaching vehicles and adjusts its monitoring intensity and collision avoidance responses based on the detected risk level, optimizing energy usage according to actual safety needs.
3Measurement precision
If the detection portion monitors information at high frequency to detect moving vehicles, then detection accuracy is improved, but battery discharge increases
Solution Approach 1:
The detection portion monitors information on approaching vehicles at predetermined time intervals rather than continuously, reducing battery discharge while maintaining detection accuracy. This periodic monitoring captures significant changes in vehicle position and speed that indicate collision risk without the energy cost of continuous high-frequency sampling.
Solution Approach 2:
The system changes monitoring parameters dynamically based on detected conditions. When a potential collision risk is detected, the monitoring frequency and sensitivity are increased to improve detection accuracy. When no risk is present, monitoring parameters are reduced to minimize battery discharge, optimizing the balance between detection accuracy and energy consumption.
Data Source
AI summary
A method of controlling collision avoidance of a vehicle, which is capable of preventing a collision accident caused by other vehicle even in a parked or stopped state of the vehicle, includes: detecting other vehicle in the parked or stopped state of the vehicle and predicting whether a collision occurs due to a movement of other vehicle and turning the vehicle during parking or stopping in a collision avoidance direction using a driving torque and a braking torque when a collision is expected due to the movement of other vehicle.