Vehicle Lane Change Control Cancellation via Opposite Command
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Solution Overview
Problem
Conventional vehicle lane change control systems may erroneously execute lane changes or turn on direction indicators when an occupant attempts to cancel a lane change command due to incorrect input, leading to inappropriate vehicle control.
Innovation Solution
A driving support apparatus with a reception unit, traveling control unit, lighting control unit, and command determination unit that receives lane change commands, cancels lane changes if a second command in the opposite direction is received before the vehicle enters an adjacent lane, and turns off direction indicators to prevent erroneous lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device unconditionally responds to lane change commands received from the input device, then the lane change operation is simple and responsive, but erroneous lane change commands may be executed leading to incorrect vehicle control
Solution Approach 1:
The command determination unit monitors the state of the direction indicator switch and compares sequential commands to detect erroneous inputs. When a second lane change command in the opposite direction is received before the vehicle enters the adjacent lane, the system cancels the first lane change control, preventing incorrect execution. This feedback mechanism maintains simple operation while ensuring reliable control by validating command sequences.
2Speed
If the device executes lane change control based on the first lane change command, then the lane change is performed promptly, but an erroneous second lane change command may cause the vehicle to change to the wrong lane
Solution Approach 1:
The system performs preliminary validation by monitoring the direction indicator switch state during the lane change execution process. If a second lane change command in the opposite direction is detected before the vehicle actually enters the adjacent lane, the system preemptively cancels the first lane change control and turns off the direction indicator. This preliminary detection and cancellation mechanism ensures that erroneous commands do not result in wrong lane changes while maintaining prompt execution of valid commands.
3Ease of manufacture
If the direction indicator is turned on based on the first lane change command, then the lane change intention is clearly indicated, but erroneous second lane change commands may cause incorrect direction indicator activation
Solution Approach 1:
The lighting control unit receives control signals from the command determination unit that are generated by monitoring the sequence of lane change commands. When a second lane change command in the opposite direction is detected before lane change completion, the system turns off the direction indicator and cancels the first lane change control. This feedback-based control ensures the direction indicator accurately reflects the current valid command state while maintaining simple control logic.
Data Source
AI summary
A reception unit receives a command which is either a leftward lane change command or a rightward lane change command. A traveling control unit controls the lane change, based on the lane change command. A lighting control unit turns on a direction indicator. A command determination unit causes the traveling control unit to cancel control of both the leftward and rightward lane changes and causes the lighting control unit to turn off the direction indicator, in spite of the reception unit receiving a first lane change command to either leftward or rightward direction as a lane change, and the traveling control unit starting first lane change control, if a second lane change command, which is in a direction opposite to the first lane change, is received before part of the vehicle enters an adjacent lane which is adjacent to a traveling lane where the vehicle travels.