EV Charging Space Reservation Control With Access Restriction
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Solution Overview
Problem
Existing reservation systems for electric vehicle charging spaces do not allow for reservations without prior booking, limiting the utilization of charging spaces and not ensuring guaranteed access for reserved vehicles.
Innovation Solution
A reservation managing system that includes a state acquiring unit to detect the presence or absence of vehicles in charging spaces, a reservation managing unit to determine if the space is available for reservation, and a restricting unit to enforce reservation restrictions using a restricting device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a charging space is provided to a vehicle without a reservation, then the charging space can be utilized by walk-in vehicles, but the reserved vehicle cannot be guaranteed access to the charging space
Solution Approach 1:
The system dynamically changes the state of the charging space between 'restricting' and 'release' based on real-time conditions. When a vehicle without reservation enters, the restricting device is released to allow charging. When a reserved vehicle arrives, the restricting device is activated to guarantee access. This dynamic state transition resolves the contradiction between adaptability and reliability.
Solution Approach 2:
The system performs preliminary actions by pre-reserving charging spaces for scheduled vehicles and pre-activating the restricting device before the reserved vehicle arrives. This ensures that when the reserved vehicle reaches the charging station, the space is already secured and the restricting device is ready to prevent other vehicles from occupying it.
2Reliability
If the restricting device is always activated to guarantee reserved vehicles, then reservation reliability is improved, but charging spaces cannot be used by vehicles without reservations
Solution Approach 1:
The restricting device transitions between 'restricting' and 'release' states based on real-time detection of vehicle presence and reservation status. When no vehicle is present or a non-reserved vehicle is charging, the device is released. When a reserved vehicle arrives, it switches to restricting mode. This dynamic behavior ensures both reliability for reserved users and adaptability for general access.
Solution Approach 2:
The system applies different access control qualities to different time periods and conditions. During periods when charging spaces are available, the system allows open access. When a reserved vehicle is present or approaching, it switches to restricted access mode. This local differentiation of access quality resolves the contradiction between always guaranteeing reservations and always allowing open access.
3Measurement precision
If the system monitors vehicle presence continuously to manage reservations, then reservation management accuracy is improved, but system complexity increases
Solution Approach 1:
The detection device automatically detects vehicle presence and communicates with the reservation management device without requiring manual intervention. The system self-updates the charging space state based on detected vehicle presence, and the restricting device automatically activates or releases based on these detections. This self-service approach improves measurement precision while minimizing the complexity of manual monitoring systems.
Solution Approach 2:
The system implements a feedback loop where the detection device continuously monitors vehicle presence and sends information to the reservation management device, which then controls the restricting device accordingly. This automated feedback mechanism ensures accurate real-time monitoring without requiring complex manual intervention systems, as the feedback loop automatically adjusts the restricting device state based on detected conditions.
Data Source
AI summary
Reservation managing device includes: a state acquiring unit for acquiring information on presence or absence of a vehicle in a charging space; a reservation managing unit for determining whether a use state of the charging space is a reservation available state based on the information acquired by the state acquiring unit, and for accepting a reservation for the charging space in a case where the charging space is in a reservation available state; and a restricting unit for putting a restricting device provided in the charging space into a state for restricting use of the charging space, in a case where the reservation has been accepted by the reservation managing unit.