Vehicle Control Authority Caching for Offline Function Access
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Solution Overview
Problem
Existing vehicle control systems struggle to determine user authority for vehicle control functions when server access is unavailable, leading to inefficiencies and limitations in providing driving assistance technologies.
Innovation Solution
A control device for vehicles that includes a reception unit to receive authority information from a server, an update unit to store and manage user authority information locally, and a vehicle control unit to perform functions based on this authority information, ensuring seamless operation even without continuous server access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle constantly queries the server about use authority, then the authority information can be kept updated, but the vehicle cannot determine whether the user has the use authority when the vehicle cannot access the server
Solution Approach 1:
The vehicle stores authority information locally in advance before server access is unavailable. The reception unit receives authority information from the server when accessible, and the storage unit stores this information locally, enabling the vehicle to determine user authority without real-time server access.
2Ease of operation
If the vehicle stores authority information locally, then the vehicle can determine user authority without server access, but the authority information may become outdated
Solution Approach 1:
The vehicle periodically queries the server to update the stored authority information. When the vehicle successfully accesses the server, it receives updated authority information and compares it with the stored information, ensuring the local authority information remains current while maintaining operational convenience.
3Reliability
If the vehicle queries the server frequently, then the authority information remains current, but energy consumption increases
Solution Approach 1:
The vehicle performs periodic queries to the server at predetermined intervals rather than continuously. The control unit determines whether to query the server based on elapsed time since the last query, reducing energy consumption while maintaining authority information currency through periodic updates.
Data Source
AI summary
A control device for a vehicle includes a reception unit configured to receive, from a server, first authority information indicating whether a user of the vehicle has an authority to use a specific vehicle control function, an update unit configured to update, based on the first authority information, second authority information that indicates whether the user has the authority to use the specific vehicle control function and is stored in a storage device of the vehicle, and a vehicle control unit configured to perform the vehicle control function based at least in part on the second authority information indicating that the user has the authority to use the specific vehicle control function.