Lane Change Cancellation Using Driver Grip and Lane Marker Distance
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Solution Overview
Problem
Existing lane change assistance systems often fail to accurately cancel a lane change, leading to potential safety issues and inefficient driving experiences.
Innovation Solution
A moving body control apparatus that acquires vicinity information, controls travel and lane changes, and judges the grip state of the occupant on the steering manipulator. It cancels or continues a lane change based on the grip state and the distance from the lane marker, using predefined threshold values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lane change assistance system automatically cancels the lane change when a predetermined condition is met, then the safety is improved, but the accuracy of cancellation is insufficient
Solution Approach 1:
The system continuously monitors the grip state of the occupant on the steering manipulator during lane change execution and uses this feedback to dynamically adjust the cancellation decision. The grip state information is fed back to the control unit, which integrates it with the predetermined condition (presence of another vehicle) to make an accurate cancellation judgment, thereby resolving the contradiction between safety and cancellation accuracy.
Solution Approach 2:
The system performs preliminary assessment of the grip state before finalizing the lane change cancellation decision. By evaluating whether the occupant is gripping the steering manipulator in advance, the system prepares the appropriate cancellation action, ensuring both safety and accuracy in the cancellation process.
2Measurement precision
If the system monitors the grip state of the occupant on the manipulator, then the accuracy of lane change cancellation is improved, but the device complexity increases
Solution Approach 1:
The steering manipulator serves multiple functions: it is both the steering control device and the sensor for detecting occupant grip state. By utilizing the existing manipulator structure for dual purposes, the system achieves accurate cancellation detection without adding separate complex sensing systems, thereby improving accuracy while minimizing the increase in device complexity.
3Productivity
If the lane change is cancelled based on grip state and proximity to target lane, then the driving efficiency is improved, but the control complexity increases
Solution Approach 1:
The system uses parameter changes in the grip state (detected through torque or force sensors on the manipulator) to trigger different control outcomes. When the grip state parameter exceeds a threshold, the system executes lane change cancellation; otherwise, it continues. This parameter-based control approach improves driving efficiency by enabling context-aware decisions while keeping the control logic relatively simple through threshold-based judgment.
Data Source
AI summary
A moving body control apparatus includes a cancel control section performing control to cancel a lane change when a first cancel condition and a second cancel condition for cancelling the lane change are satisfied. When the first cancel condition is satisfied with the grip of an occupant on a manipulator being a prescribed level or greater, if a distance in a vehicle width direction between a moving body and a lane marker is a first distance threshold value or greater, the cancel control section judges that the second cancel condition is satisfied and cancels the lane change, and when the first cancel condition is satisfied with the grip being less than the prescribed level, if the distance is not less than a second distance threshold value greater than the first distance threshold value, the cancel control section judges that the second cancel condition is satisfied and cancels the lane change.