Lane Change Assistance Device Timing Control
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Solution Overview
Problem
Existing lane change assistance systems often initiate lane changes prematurely, causing discomfort for drivers due to incorrect timing based on the type of lane mark, as they recognize broken lines ahead of the switching position, leading to unnecessary or delayed lane changes.
Innovation Solution
A lane change assistance device that includes a surrounding detection unit, a lane keep controller, a lane change determination unit, and a notification unit, which detects the type of lane mark and notifies the driver of lane change availability only when the vehicle reaches a predetermined range relative to the change position, ensuring proper timing for lane changes based on the type of lane mark.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera has high detection accuracy or high recognition accuracy, then the broken line is recognized at a time point at which a long distance is still left to the switching position, but lane change control may be started prematurely causing driver discomfort
Solution Approach 1:
The system performs preliminary detection of the lane mark type switching position in advance, but delays the execution of lane change control until the vehicle actually reaches that position. The notification is issued when the vehicle arrives at the switching position, not when it is detected ahead, thereby preventing premature lane change while maintaining high detection accuracy.
2Productivity
If lane change control is started based on early recognition of broken line, then lane change is executed ahead of the switching position, but the driver feels uncomfortable with such lane change operation
Solution Approach 1:
The system continuously monitors the vehicle's position relative to the detected lane mark switching position and provides feedback through notification when the vehicle reaches the switching position. This feedback mechanism ensures lane change control is activated at the correct moment rather than prematurely, maintaining both responsiveness and driver comfort.
3Loss of time
If the notification about lane change availability is made early based on detected broken line ahead, then the driver may perform lane change operation too early, but this causes lane change at incorrect position
Solution Approach 1:
The system performs preliminary detection of the lane mark switching position ahead of time, but delays the notification until the vehicle actually reaches that position. This preliminary detection followed by timed notification ensures both timely awareness for the driver and accurate lane change execution at the correct position.
Data Source
AI summary
A surrounding information acquisition section and a recognition unit (a surrounding detection unit) detect a first position (a change position) at which the type of a lane mark is switched. A lane change determination unit outputs a determination result whether lane change is available or unavailable on the basis of the type of the lane mark ahead of the first position to a notification mechanism (a notification unit) at a time point at which a vehicle has reached a predetermined range including the first position. The notification mechanism makes notification of the determination result.