Vehicle Control System Target Pairing Offset Correction
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Solution Overview
Problem
Conventional vehicle control systems inaccurately correct intervehicular distance due to recognizing wrong target pairs, especially when preceding vehicles change lanes or split, leading to erroneous corrections with significant impact.
Innovation Solution
A vehicle control system that uses a radar and camera-based system to select and pair targets, store offsets, and execute intervehicular distance control, inhibiting pairing when determination parameters exceed thresholds, and correcting distances based on image recognition to reduce erroneous corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional vehicle control system automatically pairs detected targets and stores offsets for intervehicular distance correction, then the system can maintain distance control when the closer target disappears, but the system incorrectly pairs unrelated targets (especially when vehicles change lanes or split), causing erroneous corrections with significant impact
Solution Approach 1:
The system continuously monitors determination parameters (relative distance, relative speed, lateral deviation) between paired targets and compares them against thresholds. When parameters exceed thresholds indicating the targets are not a true pair, the system provides feedback to dissolve the pairing and clear the offset, preventing erroneous distance corrections
Solution Approach 2:
The pairing condition is made dynamic rather than static. The system continuously evaluates whether targets satisfy pairing conditions based on real-time determination parameters, allowing the pairing status to adapt to changing driving conditions such as lane changes or vehicle splits, thereby maintaining accurate target identification
2Productivity
If the system subtracts stored offset from distance to farther target when closer target is not detected, then intervehicular distance control continues, but erroneous offset subtraction occurs when wrong target pairs were previously identified
Solution Approach 1:
Before executing offset subtraction, the system checks determination parameters to verify pairing validity. This feedback mechanism ensures that offset correction is only applied when targets are confirmed as a legitimate pair, preventing erroneous corrections while maintaining control continuity
Solution Approach 2:
The system performs preliminary verification of pairing conditions by evaluating determination parameters before storing offsets or executing distance corrections. This preliminary action prevents erroneous offsets from being stored in the first place, eliminating the need for corrective actions later
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides more accurate intervehicular distance control by reducing the likelihood of recognizing wrong target pairs and correcting distances based on precise target identification, thereby maintaining safe and stable vehicle spacing.
Implementation Method 1
a target belonging to a preceding vehicle detected by a reflection wave issued from a radar system
Data Source
AI summary
A vehicle control system includes a preceding vehicle selector that selects a pair of preceding vehicles, a target pair recognizer that executes a pairing process of storing a distance between a first target and a second target belonging to the respective preceding vehicles as an offset, and an intervehicular distance setter that sets both of a distance between an own vehicle and a first target as an intervehicular distance when the first target and the second target are detected as a target pair, and a distance corrected based on the offset as an intervehicular distance when the first target out of the target pair is not detected. The target pair recognizer stores a history of determination parameters including at least one of changes in relative distance, relative speed, and lateral deviation amount between the first and second targets.