Control Device Backup Switching for Security Attack Continuity
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Solution Overview
Problem
Existing control devices struggle to maintain vehicle control during unknown security attacks, where the relationship between the source of the abnormality and the affected location cannot be analyzed in advance.
Innovation Solution
A control device equipped with a functional element holding unit, an abnormality detection unit, a processing target identifying unit, and a functional element switching unit, which identifies related functional elements based on operation history similarity and switches control functions to backup elements to maintain vehicle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If backup functional elements are prepared for all functional elements, then system reliability is improved during security attacks, but device complexity increases
Solution Approach 1:
The patent prepares backup functional elements in advance for each functional element before security attacks occur. This preliminary preparation ensures that when an abnormality is detected, the system can immediately switch to backup elements without delay, maintaining vehicle control continuity while avoiding the complexity of real-time backup selection algorithms
Solution Approach 2:
The patent changes the operational state parameter of functional elements by switching from active to standby mode. When an abnormality is detected in a functional element, the system changes the state of the corresponding backup element from standby to active, thereby maintaining system functionality while managing complexity through state transitions rather than structural changes
2Measurement precision
If related functional elements are identified based on operation history similarity, then accuracy of abnormality propagation identification is improved, but processing time increases
Solution Approach 1:
The patent implements feedback by continuously monitoring the operational states and histories of functional elements. When an abnormality is detected, the system uses the accumulated operation history data to identify related functional elements that may be affected, providing feedback-based identification that improves accuracy while leveraging historical patterns to reduce processing time
Solution Approach 2:
The patent performs preliminary analysis and stores operation history data for functional elements before abnormalities occur. This pre-processing of operational patterns enables the system to quickly identify related functional elements during security attacks by comparing current abnormality patterns against stored historical data, thereby reducing real-time processing time while maintaining high identification accuracy
Data Source
AI summary
Provided are a functional element holder to hold a plurality of functional elements for executing the control and also backup functional elements, an abnormality detector to detect an abnormality caused by a security attack via the communication network, a processing target identifying circuitry to identify, as processing targets, a functional element in which the abnormality is detected and a related functional element related to the abnormality among the plurality of functional elements, and a functional element switcher to switch control functions of the functional elements identified as the processing targets to corresponding respective backup functional elements to cause an execution. The processing target identifying circuitry is configured to extract, as the related functional element, a functional element that is determined to have an operating status having a similarity to that of the functional element in which the abnormality is detected.