Autonomous Vehicle Overtaking Lane Recognition Under Obstruction
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Solution Overview
Problem
Autonomous driving vehicles face challenges in recognizing an overtaking lane when a preceding vehicle travels abnormally, as the field of view of the distance sensor is often obstructed, leading to instability in autonomous driving.
Innovation Solution
A vehicle system that includes a processor to calculate the direction and distance to overtake a preceding vehicle, a distance sensor to recognize lanes, and a driving apparatus to control the vehicle's movement, ensuring the distance sensor can accurately detect the overtaking lane by adjusting the vehicle's position based on calculated distances and times to collision with rear vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vehicle maintains a fixed position behind the preceding vehicle, then the distance to the preceding vehicle is stable, but the distance sensor cannot recognize the overtaking lane due to obstruction
Solution Approach 1:
The vehicle dynamically adjusts its position by calculating a movement distance in the traversing direction based on the distance to the preceding vehicle. This dynamic positioning allows the distance sensor to recognize the overtaking lane while maintaining safe following distance, resolving the contradiction between lane recognition accuracy and driving stability
2Measurement precision
If the vehicle moves in the traversing direction to recognize the overtaking lane, then the distance sensor can detect the lane, but the vehicle may collide with rear vehicles on the overtaking lane
Solution Approach 1:
The system performs preliminary detection by using the distance sensor to identify rear vehicles on the overtaking lane before the vehicle moves. Based on this advance detection and calculated time to collision, the system determines whether it is safe to move in the traversing direction, preventing collisions while enabling lane recognition
3Measurement precision
If the vehicle calculates movement distance to enable lane recognition, then the distance sensor can recognize the overtaking lane, but the control system complexity increases
Solution Approach 1:
The existing distance sensor used for measuring distance to the preceding vehicle is made multi-functional by also using it to detect rear vehicles on the overtaking lane and recognize lane positions. This universal use of the distance sensor enables lane recognition without adding new sensing devices, reducing control system complexity while maintaining measurement precision
Data Source
AI summary
A vehicle includes: a processor configured to calculate a direction in which the vehicle is to move in order to overtake a preceding vehicle and calculate a distance to the preceding vehicle when it is determined that the preceding vehicle is travelling abnormally; a distance sensor configured to recognize a lane located in the calculated direction in which the vehicle is to move based on the calculated distance to the preceding vehicle; and a driving apparatus configured to control driving of the vehicle in a manner which keeps the vehicle at or near the calculated distance to the preceding vehicle.