Lane Following Control Torque Hold Over Vehicle Speed Bumps
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Solution Overview
Problem
Existing lane following assist systems in vehicles face instability when encountering speed bumps, leading to abnormal calculation of control torque and potential deviation from lane lines due to misrecognition of lane lines or unstable vehicle behavior.
Innovation Solution
A driving assistance apparatus equipped with a camera and behavior sensors that process image and behavioral data to identify speed bumps, determine control torque, and maintain it during passage, ensuring stable lane following by transmitting the control torque to the steering apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the lane following assist system actively adjusts control torque based on real-time image processing to correct lane deviations, then the responsiveness and accuracy of lane following is improved, but the system becomes unstable when encountering speed bumps causing abnormal control torque calculation
Solution Approach 1:
The system performs preliminary identification of speed bumps using image processing before the vehicle encounters them. When a speed bump is detected, the system proactively prepares by maintaining the current control torque and suspending active lane following adjustments, preventing the instability that would otherwise occur during speed bump passage.
Solution Approach 2:
The system dynamically adjusts its control strategy based on the detected road condition. During normal driving, active lane following control is applied for precise lane keeping. When a speed bump is detected, the system transitions to a maintenance mode where control torque is held constant, adapting the control behavior to match the changing road conditions.
2Manufacturing precision
If the system continuously processes image data to identify lane lines and adjust steering, then the lane following precision is improved, but false recognition of lane lines occurs when passing speed bumps leading to incorrect control commands
Solution Approach 1:
The system performs preliminary detection of speed bumps in the image data before the vehicle reaches them. By identifying the speed bump's position and timing in advance, the system can anticipate potential false lane line detections that would occur during speed bump passage and prepare appropriate countermeasures.
Solution Approach 2:
The system uses speed bump detection as an intermediary condition to mediate between image processing data and control commands. When a speed bump is detected as an intermediary factor, it acts as a filter that prevents false lane line recognition from triggering incorrect control adjustments, resolving the conflict between maintaining precision and avoiding false positives.
Data Source
AI summary
An apparatus for driving assistance includes a camera mounted on a vehicle to have a field of view around the vehicle and configured to obtain image data and a controller configured to determine a control torque for performing a lane following assist function by processing the image data and behavior data obtained from a behavior sensor provided in the vehicle, identify a speed bump in a driving lane based on the image data, and maintain the control torque determined before passing the speed bump while the vehicle passes the speed bump.