Vehicle Lane Change Control Using Lane Line Type Verification
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Solution Overview
Problem
Existing vehicle lane change systems rely on outdated map information, which may not reflect the latest road structure, leading to inappropriate lane changes due to differences between mapped and actual road conditions.
Innovation Solution
A vehicle controller that uses sensor signals to detect the type of lane lines and compares them with map information, controlling the vehicle to change lanes only when the detected type matches the mapped type, ensuring a safe and appropriate lane change.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the vehicle uses map information for lane change decisions, then the lane change planning can be performed in advance, but the map information may be outdated and not reflect the latest road structure
Solution Approach 1:
The system continuously compares the lane line type detected by the sensor with the lane line type stored in the map information. This feedback mechanism allows the vehicle to verify whether the map information is still accurate and make real-time adjustments to lane change decisions based on the comparison result.
Solution Approach 2:
The sensor-detected lane line type acts as an intermediary between the map information and the lane change control decision. Instead of directly using map information for lane change decisions, the system introduces sensor verification as an intermediate step to ensure the map information is still valid.
2Device complexity
If the vehicle changes lanes based on map information alone, then the lane change control is simple, but the vehicle may attempt lane changes at positions where the actual road structure does not allow it
Solution Approach 1:
The system uses sensor feedback to verify the actual road structure before executing lane changes. The detected lane line type is compared with the map information, and the lane change decision is adjusted based on this feedback, ensuring the vehicle only changes lanes when the actual road structure permits.
3Measurement precision
If the vehicle verifies lane line type using sensor signals, then the accuracy of lane change position is improved, but the system complexity and processing requirements increase
Solution Approach 1:
The system extracts only the essential feature (lane line type) from the sensor data for comparison with map information. Instead of processing the entire sensor image or data set, it focuses on identifying and comparing the specific lane line type, thereby reducing processing complexity while maintaining detection accuracy.
Data Source
AI summary
A vehicle controller includes a processor configured to detect the type of lane line demarcating a travel lane being traveled by a vehicle from a sensor signal generated by a sensor mounted on the vehicle, the sensor signal representing surroundings of the vehicle, and determine whether the detected type of lane line matches the type of lane line represented in map information between the travel lane and an adjacent lane adjacent thereto at the current position of the vehicle when a lane change to the adjacent lane is required. The processor is further configured to control the vehicle to start a lane change to the adjacent lane in the case that the detected type of lane line matches the type of lane line represented in the map information.