In-Vehicle Anomaly Detection With Adaptive Communication Routing
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Solution Overview
Problem
Existing anomaly detection systems in vehicles are unable to reliably notify an offboard system of vehicle anomalies when communication with the outside world is interfered with or hindered.
Innovation Solution
An anomaly detection system that includes an anomaly detector, a determiner to select an alternative communication route, and a transmitter to send anomaly detection results to a specific offboard device using the determined route, ensuring reliable notification of vehicle anomalies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single communication route is used to transmit anomaly detection result information to the offboard system, then the communication structure is simple, but the reliability of anomaly notification deteriorates when communication interference or anomalies occur
Solution Approach 1:
The patent combines multiple communication routes (first communication route via TCU and second communication route via IVI) into a unified anomaly notification system. The ECU can select either route to transmit anomaly detection results, merging the functionality of multiple paths to achieve redundancy and improved reliability without requiring completely separate systems.
Solution Approach 2:
The patent implements dynamic selection of communication routes based on the operational state of the vehicle and communication availability. The system can switch between the first communication route (when vehicle is off) and the second communication route (when vehicle is on), creating a flexible and adaptive communication structure that responds to changing conditions rather than relying on a fixed single path.
2Reliability
If multiple communication routes are provided for transmitting anomaly detection result information, then the reliability of notification is improved, but the device complexity increases
Solution Approach 1:
The patent makes the ECU multi-functional by enabling it to transmit anomaly detection results through multiple different communication routes depending on vehicle state. The same ECU handles both the first communication route (when vehicle is off) and the second communication route (when vehicle is on), rather than requiring separate dedicated systems for each path, thus achieving universality and reducing overall complexity.
Solution Approach 2:
The system uses existing vehicle communication infrastructure (TCU and IVI) that are already part of the vehicle's normal operation, rather than introducing entirely new dedicated communication systems. The anomaly notification function leverages these existing self-service components, reducing the need for additional complex hardware while still providing multiple transmission paths.
3Loss of information
If anomaly detection results are transmitted only through the first communication route, then the communication protocol is simple, but the loss of information occurs when communication with the offboard system is interfered with
Solution Approach 1:
The patent prepares multiple communication routes in advance (first route via TCU, second route via IVI) before communication interference occurs. The system has pre-configured alternative paths ready to be activated when the primary route fails, rather than attempting to establish new communication channels after interference happens, thus preventing information loss through proactive preparation.
Solution Approach 2:
The patent introduces the IVI (In-Vehicle Infotainment) system as an intermediary communication path when the direct TCU route is unavailable. The IVI acts as a mediator that can relay anomaly detection results to the offboard system through alternative communication channels, ensuring information reaches its destination even when the primary direct route is blocked by interference.
4Ease of operation
If the vehicle state is checked before selecting communication route, then the appropriateness of route selection is improved, but the processing time increases
Solution Approach 1:
The system performs preliminary classification of communication routes based on vehicle state (on/off) before actual anomaly detection and transmission needs arise. By pre-determining which route to use based on the current vehicle state, the system avoids complex real-time decision-making when anomalies occur, thus reducing the time loss during actual anomaly notification while maintaining appropriate route selection.
Data Source
AI summary
An anomaly detection system is a system in an in-vehicle network system that includes one or more ECUs mounted on a vehicle and in which the vehicle and a server are capable of communicating with each other through a plurality of communication routes. The anomaly detection system includes: an anomaly detector that detects an anomaly in the vehicle; a determiner that determines, out of the plurality of communication routes, a communication route for transmitting anomaly detection result information indicating a result of detection of the anomaly in the vehicle to the server, according to occurrence of a specific anomaly; and an anomaly detection result transmitter that transmits the anomaly detection result information to the server using the communication route determined.