Automatic Parking Shift Range Override Control
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Solution Overview
Problem
Existing automatic parking devices may start a vehicle in a shift range different from the driver's assumption when shift range is automatically controlled, posing a risk of incorrect gear selection during transfer of vehicle control back to the driver.
Innovation Solution
An automatic parking device with a vehicle control unit that sets the transmission shift range to a non-drive range upon satisfying an override condition, allowing the driver to set the shift range upon resuming control, thereby preventing incorrect gear selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the shift range is automatically controlled during automatic parking, then the convenience during parking is improved, but the risk of vehicle starting in a shift range different from the driver's assumption increases
Solution Approach 1:
The system performs preliminary action by setting the shift range to neutral before transferring control to the driver. This preparatory step ensures that the vehicle cannot start in an incorrect gear position, preventing the reliability issue while maintaining automatic parking convenience
Solution Approach 2:
The neutral shift range acts as an intermediary state between automatic parking control and manual driver control. This intermediate position serves as a safety buffer that prevents direct transition to drive range without driver confirmation, resolving the contradiction between automation and reliability
2Reliability
If the shift range is set to non-drive range upon override condition, then the vehicle starting safety is improved, but the unnecessary shift range change may occur when vehicle does not decelerate
Solution Approach 1:
The system dynamically adjusts the shift range setting based on real-time vehicle deceleration status. When deceleration is detected, the shift range is set to neutral; when no deceleration occurs, the shift range remains unchanged. This dynamic adaptation prevents unnecessary shift changes while maintaining safety
Solution Approach 2:
The system uses feedback from the vehicle's deceleration state to determine whether to change the shift range. By continuously monitoring deceleration and responding accordingly, the system avoids unnecessary neutral positioning while ensuring safety when conditions warrant it
Data Source
AI summary
An automatic parking device includes a vehicle control unit configured to control a speed, steering of the vehicle, and a shift range of a transmission of the vehicle in order to park the vehicle, a reception unit configured to receive a driving operation by a driver of the vehicle during the automatic parking by the vehicle control unit, and a determination unit configured to determine whether or not the driving operation received by the reception unit satisfies a predetermined override condition. The vehicle control unit stops the vehicle and sets the shift range of the transmission of the vehicle to a non-drive range in a case where it is determined by the determination unit that the driving operation satisfies the override condition.