Lane Change Steering Torque Correction via Turn Signal Feedback
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Solution Overview
Problem
Lane-keeping assistance systems often fail to prevent unintentional steering movements during lane changes, as drivers may lose focus when activating turn signals, leading to potential accidents.
Innovation Solution
A method and device that read activation signals and sensor signals to provide a control signal for the steering system, generating a counter-steering torque when the vehicle moves against the intended direction, thereby correcting unintentional steering and preventing accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the lane-keeping assistance system is activated to correct steering movements, then the vehicle stability is improved, but the system incorrectly intervenes when the driver is performing intentional lane changes
Solution Approach 1:
The system continuously monitors the turn signal state and compares it with the actual steering movements. When the turn signal is active, the system receives feedback that the driver intends to change lanes, and accordingly suspends lane-keeping intervention. This feedback mechanism allows the system to adapt its behavior based on the driver's intentions, preventing false corrections during intentional lane changes while maintaining stability during normal operation
Solution Approach 2:
The lane-keeping assistance system dynamically adjusts its activation state based on the turn signal status. When the turn signal is activated, the system transitions from an active intervention mode to a suspended mode, allowing the driver to steer freely for lane changes. This dynamic adaptation resolves the contradiction by making the system's behavior flexible rather than fixed, enabling it to accommodate both stability requirements and lane change maneuvers
2Ease of operation
If the lane-keeping assistance system suspends intervention during turn signal activation, then the driver's lane change maneuver is facilitated, but the system fails to prevent unintentional steering movements in the wrong direction
Solution Approach 1:
Instead of completely suspending lane-keeping assistance during turn signal activation, the system applies partial action by providing reduced or modified steering torque. This allows the system to maintain some level of guidance to prevent unintentional wrong-direction steering while still permitting the driver to complete the intended lane change maneuver. The partial intervention strikes a balance between facilitating lane changes and preventing errors
Solution Approach 2:
The system detects when a turn signal is activated and proactively prepares to suspend or modify lane-keeping intervention before the driver potentially makes an unintentional steering movement. By anticipating the lane change intention in advance through the turn signal, the system can preemptively adjust its behavior to prevent harmful interventions while maintaining reliability against wrong-direction steering
Data Source
AI summary
A method for assisting a driver of a vehicle during a lane change, in which for this purpose, an activation signal which represents an activation of a turn signal of the vehicle, which faces a setpoint direction of travel, and a sensor signal which is provided by at least one sensor of the vehicle and which represents a steering movement for steering the vehicle and/or a change in position of the vehicle within a lane are read in. Using the activation signal and the sensor signal, a control signal for controlling a steering system of the vehicle is provided if the steering movement is counter to the setpoint direction of travel and/or the change in position represents a movement of the vehicle in a direction counter to the setpoint direction of travel.