Virtual Lane Keeping From Driver-Centered Steering Input
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Solution Overview
Problem
Existing lane keeping systems in vehicles struggle to maintain lane position when lane markings are absent, relying solely on sensor data which may be insufficient for accurate lane detection.
Innovation Solution
A method that utilizes sensor data to detect the absence of lane markings, prompts the driver to steer to a perceived center line, determines a virtual lane based on the driver's action, and uses this input along with positional data from surrounding vehicles to maintain lane position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If lane keeping systems rely solely on sensor data for lane detection, then the system can operate autonomously, but the system fails when lane markings are absent
Solution Approach 1:
The system requests feedback from the driver by prompting them to steer to the perceived center line. The driver's steering input serves as feedback about the actual lane position, which the system uses to determine the virtual lane when markings are absent, thereby maintaining reliability without compromising automation.
Solution Approach 2:
The driver acts as an intermediary between the environment (actual lane position) and the control system. When sensor data is insufficient, the driver's steering behavior provides indirect information about lane position, enabling the system to infer the virtual lane and maintain reliable operation.
2Duration of action of moving object
If the system uses extrapolation of last detected lane markings, then the system can maintain lane keeping temporarily, but the accuracy deteriorates over time
Solution Approach 1:
The system periodically refreshes the lane position information by requesting feedback from the driver. This feedback mechanism allows the system to maintain accurate lane position data over extended periods, preventing the accuracy deterioration that would occur with simple extrapolation.
3Measurement precision
If the system prompts the driver to steer to perceived center line, then the system can determine virtual lane position, but the ease of operation decreases
Solution Approach 1:
The system requests driver feedback only partially - specifically when lane markings are absent and sensor data is insufficient. When lane markings are present, the system operates autonomously without driver input. This selective approach maintains ease of operation while achieving accurate lane position detection when needed.
4Adaptability or versatility
If the system uses driver feedback to determine virtual lane, then the system can provide lane keeping without markings, but the device complexity increases
Solution Approach 1:
The existing driver feedback mechanisms (steering input, HMI interfaces) are repurposed to serve multiple functions: normal vehicle control and lane position indication. This allows the system to gain lane keeping adaptability without adding dedicated complex hardware, as existing components perform the additional function of providing lane position feedback.
Data Source
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AI summary
A method for operating a vehicle (1), comprising the steps: a) receiving (S1) sensor data (S) of a sensor system (3) of the vehicle (1), b) detecting (S2) an absence of lane markings based on the sensor data (S), c) transmitting (S3) instructions (B) to a human machine interface (17) of the vehicle (1) to prompt a driver of the vehicle (1) to drive to a perceived center line (18) of a lane (11), d) determining (S5) a virtual lane (23) based on the perceived center line (18) to which the driver has driven, and e) performing (S6) a lane keeping assistant function to keep the vehicle (1) on the virtual lane (23).