Automatic Parking Voltage Control for Driver Handover
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Solution Overview
Problem
Existing automatic parking systems do not ensure that safety-relevant information is displayed to the driver after an automatic parking space-leaving maneuver, making it difficult for the driver to safely take over the vehicle, especially since the duration of the parking space-leaving maneuver is longer than the indication of safety-relevant luminaries.
Innovation Solution
A method and device that initiate an automatic parking space-leaving maneuver, manage the operating voltage supply to vehicle components, and require driver actions to re-activate the system, ensuring safety information is displayed upon taking over the vehicle, with the engine remaining running.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the automatic parking space-leaving maneuver is performed with the engine running, then the vehicle can be handed over to the driver without restarting the engine, but safety-relevant information is not displayed to the driver
Solution Approach 1:
The system performs preliminary action by switching off the voltage supply to vehicle components (including safety-relevant luminaries) during the automatic parking space-leaving maneuver. This preliminary switching off is intentional and reversible, allowing the system to restore the voltage supply later when the driver takes over, thereby displaying the safety information at the appropriate moment rather than continuously or never
Solution Approach 2:
The system dynamically adjusts the voltage supply state based on the operational phase. During the automatic maneuver, voltage is switched off to save energy and avoid unnecessary displays. When the driver approaches or takes over (detected via door opening or ignition activation), the voltage supply is restored to display safety information. This dynamic switching resolves the contradiction by making the information display conditional on the operational context
2Loss of information
If the voltage supply is maintained during the parking space-leaving maneuver, then safety information can be displayed, but energy is wasted and the system complexity increases
Solution Approach 1:
The system performs preliminary switching off of the voltage supply before the parking space-leaving maneuver begins and maintains this switched-off state throughout the maneuver. This preliminary action prevents energy waste during the automatic operation phase while ensuring that the voltage supply is restored when needed for driver handover, thereby resolving the energy consumption issue
Solution Approach 2:
The voltage supply is activated periodically - switched off during the automatic parking space-leaving maneuver and switched on when the driver takes over (upon door opening or ignition activation). This periodic switching pattern ensures energy efficiency during automated operation while maintaining safety information display capability when the driver needs it, resolving the contradiction between continuous display and energy savings
3Loss of information
If the driver must restart the engine to take over the vehicle, then safety information is displayed, but time is lost and productivity decreases
Solution Approach 1:
The system performs preliminary action by maintaining the engine running throughout the automatic parking space-leaving maneuver instead of shutting it down. The voltage supply to information displays is switched off during the maneuver but restored when the driver approaches (door opening) or activates the ignition. This allows the driver to take over immediately without restarting the engine, while safety information is still displayed at the appropriate moment, thereby eliminating the time loss associated with engine restart
4Extent of automation
If the automatic parking system operates without driver presence, then automation is improved, but safety monitoring is reduced
Solution Approach 1:
The system uses feedback mechanisms to detect when the driver is present or about to take over (via door opening sensors or ignition activation). Upon detecting driver presence, the system provides feedback by restoring the voltage supply to vehicle components, which activates the display of safety-relevant information. This feedback loop ensures that while the parking maneuver operates automatically without driver presence, safety monitoring is restored when the driver takes over, resolving the contradiction between automation and safety monitoring
Data Source
AI summary
A method and a device for handing over a motor vehicle to the driver during an automatic parking space-leaving maneuver performed by an automatic parking function. The method includes receiving an external parking space-leaving signal reflecting the driver's wish to get the motor vehicle out of the parking space, initializing the parking space-leaving maneuver and supplying an operating voltage to all vehicle components as a result of the reception of the parking space-leaving signal, carrying out the parking space-leaving maneuver from a parked position into a target position, switching off the voltage supply to predetermined vehicle components once the target position has been reached; and connecting the voltage supply to all vehicle components when the driver performs predetermined actions upon getting into the vehicle in the target position.