Dynamic Lane Keeping Target Update for Driver Comfort
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Solution Overview
Problem
Existing lane keeping assistance systems cause discomfort to drivers when trying to change vehicle travel orbits, as they continue to follow a previously set target line, leading to potential straying from lane markings, especially on curved roads or at high speeds.
Innovation Solution
A lane keeping assistance system that dynamically updates the travel target point based on driver steering inputs, road curvature, and vehicle speed, allowing continuous lane keeping control without temporary stoppages, and adjusts the distance from lane markings to prevent straying, while considering driver wakefulness and surrounding vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the lane keeping assistance device automatically controls to follow the middle of the driving lane, then the vehicle can maintain stable lane positioning, but the driver experiences discomfort when trying to change travel orbit
Solution Approach 1:
The system dynamically adjusts the control mode based on driver steering inputs. When the driver steers, the system temporarily suspends automatic lane keeping control, allowing the vehicle to follow the driver's intended path. When the driver releases the steering wheel, the system resumes automatic lane keeping control to maintain lane positioning stability. This dynamic switching resolves the contradiction by adapting the control behavior to current driving conditions.
2Ease of operation
If the lane keeping assistance control is temporarily stopped to avoid driver discomfort, then the driver can steer freely, but the vehicle may stray from lane markings
Solution Approach 1:
The system continuously monitors driver steering inputs and vehicle position relative to lane markings. When the driver steers, the system detects this feedback and temporarily suspends automatic control. After the driver releases the steering wheel, the system resumes automatic lane keeping control to ensure the vehicle returns to the proper lane position. This feedback mechanism ensures both driver freedom and lane following reliability.
3Adaptability or versatility
If the target line is continuously updated to reflect driver preferences, then the vehicle follows driver intent, but the vehicle is continuously dragged to the previous target line causing discomfort
Solution Approach 1:
The system dynamically controls the updating of the target line based on driver steering inputs. When the driver steers, the system suspends target line updates, preventing the vehicle from being continuously dragged to the previous target line. When the driver releases the steering wheel, the system resumes target line updates to adapt to driver preferences. This dynamic control resolves the contradiction between adaptability and comfort.
4Reliability
If the lane keeping assistance control operates continuously, then the vehicle maintains lane positioning, but the function is not exhibited when the driver is steering
Solution Approach 1:
The system uses feedback from the steering wheel sensor to determine when to activate and suspend lane keeping control. When the driver releases the steering wheel, the system activates lane keeping control to maintain lane positioning. When the driver steers, the system suspends control to allow driver input. This feedback-based activation ensures the control function is reliable when needed and does not interfere with driver input when needed.
Data Source
AI summary
A lane keeping assistance equipment loaded on an automotive vehicle having a response motion unit for controlling a steering of the vehicle traveling on a traffic lane between lane markings, having a lane marking detecting device for detecting a lane marking location; a sideways distance detecting device for detecting a sideways distance between the lane marking location and the vehicle; and a control device for controlling lane keeping by setting a travel target point and signaling the response motion unit for the vehicle to travel on that point, wherein, corresponding to changes in the distance amount between the lane marking location and the vehicle during a driver's continuing intervening steering act and a prescribed time afterwards, the control device updates the distance amount between the travel target point and the lane marking location after that prescribed time elapses.