Vehicle Lateral Collision Timing Control Using Overlap Prediction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing collision prevention systems struggle to accurately determine control times for vehicles approaching in a lateral direction, leading to inadequate collision avoidance due to inaccurate estimation of expected time to collision and control timing.
Innovation Solution
A method and apparatus that calculates primary and secondary lateral and longitudinal control times based on the current position of a target, determining collision overlap, and adjusts vehicle speed to prevent collisions by transmitting warning signals or braking commands when control time thresholds are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If collision prevention systems use conventional longitudinal control time calculation only, then the system complexity remains low, but the measurement precision of collision risk assessment deteriorates for lateral approaching targets
Solution Approach 1:
The patent segments the collision risk assessment into two independent dimensional calculations: longitudinal control time (based on longitudinal distance and speed) and lateral control time (based on lateral distance and speed). This segmentation allows the system to independently evaluate risks from each direction, improving measurement precision without creating a single complex unified calculation that would be difficult to manage.
Solution Approach 2:
The patent transitions from conventional single-dimensional (longitudinal only) control time calculation to two-dimensional control time assessment by introducing lateral control time calculation. This dimensional expansion enables the system to accurately assess collision risks from lateral approaching targets, directly improving measurement precision for multi-directional collision prevention.
2Measurement precision
If the system calculates both lateral and longitudinal control times with collision overlap, then the collision avoidance accuracy improves, but the loss of time for control decision-making increases
Solution Approach 1:
The patent performs preliminary calculations of both lateral and longitudinal control times along with collision overlap assessment in advance, before a collision threat materializes. By pre-establishing these control parameters, the system eliminates the need for complex real-time calculations when a threat is detected, thus improving collision avoidance accuracy without incurring time delays during critical decision-making moments.
Solution Approach 2:
The patent implements a feedback mechanism where the control unit continuously monitors target position, speed, and calculated control times, then adjusts control commands accordingly. This feedback loop enables the system to maintain high collision avoidance accuracy through continuous optimization while managing computational time efficiently by only recalculating parameters when necessary changes occur.
3Speed
If the system transmits braking commands immediately when control time thresholds are met, then the response speed improves, but the reliability of collision prevention deteriorates due to potential false positives from inaccurate lateral control time estimation
Solution Approach 1:
The patent pre-calculates lateral and longitudinal control times and collision overlap parameters before initiating control actions. This preliminary assessment ensures that when control time thresholds are met and braking commands are transmitted, the system has already verified the accuracy of its predictions through dual-dimensional calculation, reducing false positives while maintaining rapid response capability.
Solution Approach 2:
The patent employs feedback mechanisms where the control unit continuously monitors whether actual collision risks match predicted risks. If discrepancies are detected (indicating potential false positives), the system can adjust its control parameters or recalculate control times, thereby maintaining high reliability without sacrificing response speed. The feedback loop validates the accuracy of rapid control decisions.
Data Source
AI summary
A method and apparatus for controlling vehicle. An aspect of the present disclosure provides a vehicle control method performed by an apparatus of a vehicle. The vehicle control method may include: identifying a target approaching in a lateral direction of the vehicle; determining, based on a current position of the target, a primary lateral control time; determining, based on the primary lateral control time, a collision overlap; determining, based on the collision overlap, a secondary lateral control time; and adjusting, based on the secondary lateral control time, a traveling speed of the vehicle. The collision overlap may indicate what proportion of a lateral width of the vehicle is projected to overlap with a longitudinal width of the target.