Vehicle Control Device Temporary Link for Lost Target Recognition
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Solution Overview
Problem
Existing vehicle control devices lose track of target vehicles when they temporarily move near lane boundaries due to obstacles, leading to interruptions in assistance and processing tasks like preceding vehicle following and vehicle group formation.
Innovation Solution
A vehicle control device that utilizes inter-vehicle communication and sensor data to maintain a 'temporary link' with the target vehicle, allowing continuous recognition even when the on-vehicle sensor loses detection, using predetermined termination conditions such as lateral position and time limits to manage link states and exclude vehicles that are likely to change lanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is used to detect the target vehicle, then the target vehicle can be accurately identified when it is in the detection range, but the target vehicle is lost when it moves near the lane boundary due to obstacles
Solution Approach 1:
The patent introduces inter-vehicle communication as an intermediary mechanism to maintain target vehicle recognition when the sensor loses detection. The surrounding vehicle transmits its traveling state information to the host vehicle, allowing the ECU to continue identifying the target vehicle through communication data even when the sensor can no longer detect it due to lateral movement near lane boundaries.
Solution Approach 2:
The patent merges sensor detection results with inter-vehicle communication information to achieve continuous target vehicle recognition. The ECU combines the detection result from the sensor and the traveling state from communication to identify the surrounding vehicle as the target vehicle, ensuring reliable recognition whether the vehicle is in sensor range or has moved laterally.
2Reliability
If the target vehicle is continuously recognized using inter-vehicle communication alone, then recognition is maintained when the vehicle moves laterally, but false recognition may occur for vehicles that are not actual target vehicles
Solution Approach 1:
The patent uses feedback by comparing the traveling state obtained through inter-vehicle communication with the detection result from the sensor. The ECU continuously verifies the identity of the surrounding vehicle by checking whether its traveling state matches the detected target vehicle characteristics, providing a feedback mechanism to prevent false recognition while maintaining continuous tracking.
Solution Approach 2:
The patent establishes the target vehicle identity in advance when the vehicle is within sensor detection range. The ECU identifies the surrounding vehicle as the target vehicle by comparing communication information with sensor detection results before the vehicle moves out of range, preparing the recognition state in advance to maintain continuity when lateral movement occurs.
Data Source
AI summary
A vehicle control device includes at least one electronic control unit configured to acquire communication information from a surrounding vehicle, acquire a detection result of the traveling state of the surrounding vehicle, identify the surrounding vehicle as a particular vehicle, determine a link state between the surrounding vehicle and the host vehicle as a regular link while the surrounding vehicle is identified as the particular vehicle, identify the particular vehicle as a target vehicle, determine the link state between a lost vehicle and the host vehicle as a temporary link, the lost state being a state in which the target vehicle is not detected by the sensor, recognize the lost vehicle the link state of which has been changed from the regular link to the temporary link as the target vehicle while the link state is the temporary link, and control traveling of the host vehicle.