Vehicle Data Restriction Grouping for Defect-Safe Distribution
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Solution Overview
Problem
In connected-car systems, defects in distributed data can cause damage to the vehicle's electronic control units, necessitating a countermeasure to prevent such damage.
Innovation Solution
A data distribution system with a defect detection unit that identifies defects in distributed data and a restriction execution unit that instructs vehicles to restrict the function or performance of the defective data, preventing potential damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is distributed to vehicles without defect detection, then distribution speed and system simplicity are improved, but system reliability and safety deteriorate due to potential damage from defective data
Solution Approach 1:
The patent implements preliminary defect detection of distributed data at the center device before the data reaches the vehicle. The defect detection unit checks data integrity and validity in advance, preventing defective data from being transmitted. This preliminary action ensures system reliability while maintaining relatively simple overall system architecture, as the detection function is integrated into the existing distribution system rather than requiring complex additional components at the vehicle end.
2Productivity
If defective data is allowed to execute in vehicles, then data distribution efficiency is improved, but harmful effects occur due to potential damage to ECUs
Solution Approach 1:
The patent converts the potential harm of defective data into a beneficial detection opportunity. By implementing defect detection that identifies problematic data characteristics, the system can flag and prevent the transmission of defective data while allowing valid data to flow efficiently. The defect detection mechanism transforms what would be a harmful situation (defective data execution) into a preventive measure that actually improves overall system efficiency by avoiding costly repairs and retransmissions.
3Reliability
If defect detection and restriction functions are added to the data distribution system, then system reliability is improved, but device complexity and operational complexity increase
Solution Approach 1:
The patent implements a self-service mechanism where the defect detection unit automatically identifies and flags defective data, and the restriction execution unit automatically prevents transmission of flagged data without requiring manual intervention. The system self-manages the complexity of defect detection and restriction operations, maintaining high data integrity while keeping operations simple for users. The automated nature of these functions means they operate transparently in the background without adding operational burden.
Data Source
AI summary
A center device includes a distribution control unit that is configured to control distribution of data to a plurality of vehicles; a defect detection unit that is configured to detect a defect in the data that was distributed; a restriction execution unit that is configured to cause the plurality of vehicles to restrict a function and/or performance of the data from which the defect is detected; and a grouping unit that divides the plurality of vehicles as restriction targets into groups according to contents of restriction on the function and/or performance. The restriction execution unit is further configured to cause the plurality of vehicles to restrict the function and/or performance of the data from which the defect is detected for each of the groups that are divided by the grouping unit.