Lane Change Abort Detection via Dynamic Threshold Adjustment
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Solution Overview
Problem
Current autonomous driving systems cannot effectively reflect a driver's intention to abort a lane change control, leading to potential safety issues and reduced usability.
Innovation Solution
An autonomous driving system equipped with a lane change control device that detects driver operations and calculates an abort necessity level based on driving environment information, adjusting determination criteria to accurately identify abort requests, allowing the system to abort the lane change when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the autonomous driving system executes lane change control, then the vehicle can change lanes successfully, but the driver's intention to abort cannot be reflected
Solution Approach 1:
The system continuously monitors driver operations during lane change control and provides feedback by detecting abort requests through steering wheel operations. The driver's steering input is fed back to the control system, which then adjusts the lane change execution accordingly, allowing the driver's intention to be reflected in real-time.
Solution Approach 2:
The system dynamically adjusts the abort determination threshold based on the abort necessity level. When the abort necessity level is high (e.g., when a vehicle is detected in the target lane), the threshold is lowered to make abort determination easier, and when the level is low, the threshold is raised. This dynamic adjustment allows the system to balance automation execution with driver intent reflection adaptively.
2Ease of operation
If the system always accepts driver operations as abort requests, then driver intention is reflected, but false abort requests increase
Solution Approach 1:
The system dynamically adjusts the abort determination threshold based on the abort necessity level calculated from the driving environment. When the abort necessity level is high (e.g., vehicle detected in target lane, short inter-vehicle distance), the threshold is lowered to accept abort requests more easily. When the level is low, the threshold is raised to prevent false aborts, thus balancing driver intention reflection with reliability.
Solution Approach 2:
The system changes the determination parameter (abort determination threshold) based on the abort necessity level. The threshold is not fixed but varies according to environmental factors such as presence of vehicles in the target lane, inter-vehicle distance, and relative speed. This parameter change allows the system to adapt its sensitivity to driver operations based on the situation.
3Device complexity
If the system uses a fixed criterion for abort determination, then the system is simple, but it cannot adapt to different driving situations
Solution Approach 1:
The system uses a dynamic threshold that changes based on the abort necessity level rather than a fixed criterion. The threshold is adjusted according to environmental factors detected by sensors, allowing the system to adapt to different driving situations while maintaining a relatively simple overall structure.
Solution Approach 2:
The determination parameter (threshold) is changed based on the abort necessity level calculated from driving environment information. This allows the system to adapt to different situations without requiring a completely complex decision-making structure, as the parameter adjustment is based on pre-defined rules related to environmental factors.
Data Source
AI summary
An autonomous driving system includes a lane change control device that performs lane change control for making a lane change from a first lane to a second lane during autonomous driving of a vehicle. From start to completion of the lane change control, the lane change control device determines whether or not a driver's operation is performed as an abort request operation that requests to abort the lane change control. Specifically, the lane change control device: calculates abort necessity level indicating necessity to abort the lane change control, based on driving environment information indicating driving environment for the vehicle; sets criterion for determination such that the criterion becomes more easily satisfied as the abort necessity level increases; and when the driver's operation satisfies the criterion for determination, determines that the driver's operation is performed as the abort request operation.