Onboard Data Monitoring via Selective Log Transmission
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Solution Overview
Problem
Onboard systems in vehicles face challenges in monitoring data effectively due to insufficient processing capabilities, while external systems struggle with the large amount of data transmitted from onboard systems, making it difficult to maintain appropriate monitoring levels and detect unauthorized data infiltration.
Innovation Solution
An information processing device outside the vehicle that obtains a sampling log from the onboard system, determines abnormalities, and transmits a full log only when necessary, utilizing its extensive processing resources to analyze communication data and reduce data transmission while maintaining monitoring efficacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external system monitors all communication data from the onboard system, then monitoring coverage is improved, but data transmission volume increases significantly
Solution Approach 1:
The monitoring system segments data transmission into two categories: sampling logs for normal operation (reducing data volume) and full logs for abnormal situations (maintaining monitoring coverage). This segmentation allows the system to transmit only necessary data under different conditions, resolving the contradiction between comprehensive monitoring and data volume reduction.
Solution Approach 2:
The system dynamically adjusts the monitoring level and data transmission based on the operational state. During normal operation, sampling logs are transmitted at a lower rate; when abnormalities are detected, full logs are transmitted at a higher rate. This dynamic adjustment maintains effective monitoring while significantly reducing overall data transmission volume.
2Measurement precision
If the onboard system transmits all communication data to an external system, then detection accuracy is improved, but processing load on the onboard system increases
Solution Approach 1:
The system extracts only the necessary data for abnormality detection and transmits it to the external system. Instead of transmitting all communication data, the onboard system identifies and transmits sampling logs during normal operation and full logs only when abnormalities are detected. This extraction principle reduces the processing load on the onboard system while maintaining detection accuracy through selective data transmission.
Solution Approach 2:
The patent introduces an intermediary mechanism (the selective log transmission system) between the onboard system and external monitoring system. This intermediary filters and prioritizes data transmission, preventing the onboard system from being overwhelmed by processing requirements while ensuring that sufficient data reaches the external system for accurate abnormality detection.
3Quantity of substance
If sampling logs are used during normal operation, then data transmission is reduced, but detection capability for subtle abnormalities may be compromised
Solution Approach 1:
The system dynamically switches between sampling log mode and full log mode based on detected abnormalities. During normal operation, sampling logs reduce data transmission while maintaining adequate monitoring. When abnormalities are detected, the system transitions to full log transmission to ensure comprehensive analysis, thus preventing compromise of detection capability while maintaining data reduction benefits during normal states.
Solution Approach 2:
The system performs preliminary analysis using sampling logs to detect potential abnormalities before they become critical. This preliminary monitoring action allows the system to maintain reduced data transmission during normal operation while being prepared to switch to full monitoring mode when issues arise, thus preserving detection capability without continuous high-volume data transmission.
Data Source
AI summary
An information processing device capable of reducing an amount of data to be monitored in an onboard system is provided. The information processing device obtains a first log including, per unit time, some communication data flowing through the onboard system. The information processing device determines whether an abnormality is included in the communication data, using the first log. In a case where the abnormality is included in the communication data, the information processing device outputs first detection results to the onboard system. The first detection results cause transmission of a second log from the onboard system. The second log includes, per the unit time, more of the communication data than the first log.