Drive Assist Lead-Vehicle Tracking for Synchronized Lane Changes
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Solution Overview
Problem
Existing drive assist systems experience unwanted acceleration/deceleration during lane changes due to temporary deregistration of leading vehicles, which can occur even when vehicles change lanes in synchronization.
Innovation Solution
The drive assist system includes a processor that monitors the front vehicle's intention to change lanes and relaxes the leading vehicle registration and deregistration conditions during synchronization, maintaining registration until a set time to prevent frequent switching and unwanted acceleration/deceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive assist system strictly follows preset leading vehicle register and deregister conditions, then the system can reliably identify when to start and stop cruising control, but unwanted acceleration/deceleration occurs during synchronized lane changes due to temporary deregistration
Solution Approach 1:
The system performs preliminary monitoring to detect synchronized lane change intentions before the actual lane change occurs. By identifying when both vehicles intend to change lanes simultaneously, the system prepares to maintain leading vehicle registration throughout the maneuver, preventing temporary deregistration and the resulting unwanted acceleration/deceleration
Solution Approach 2:
The system dynamically adjusts the leading vehicle registration status based on detected lane change patterns. When synchronized lane change is detected, the system maintains registration despite temporary condition violations, and automatically restores normal deregistration logic after the maneuver completes, making the registration system adaptive rather than static
2Ease of operation
If the system deregisters the leading vehicle when lane change conditions are met, then the system can respond to lane change maneuvers, but frequent switching between registration states causes instability in adaptive cruise control
Solution Approach 1:
The system monitors for synchronized lane change intentions in advance and maintains leading vehicle registration throughout the detected maneuver. This preliminary detection and continuous maintenance approach prevents frequent switching between registered and unregistered states, ensuring stable adaptive cruise control operation during lane changes
Data Source
AI summary
A drive assist system for a vehicle includes a leading-vehicle registration determiner and a front vehicle monitor. The leading-vehicle registration determiner is configured to registers, as a leading vehicle, a front vehicle driving in front of the vehicle, based on a preset leading vehicle register condition and deregisters the front vehicle, based on a preset leading vehicle deregister condition. The front vehicle monitor is configured to start to monitor the front vehicle registered as the leading vehicle regarding whether the front vehicle will perform a synchro lane change to the same target lane as the vehicle, on condition that the vehicle and the front vehicle are steadily driving in the same lane. The leading-vehicle registration determiner is configured to relax the leading vehicle register condition and the leading vehicle deregister condition when the front vehicle is being monitored, compared with when the front vehicle is not being monitored.