In-Vehicle Log Collection System with Priority-Based Storage
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Solution Overview
Problem
In-vehicle apparatuses have limited resource capabilities due to space constraints, making it difficult to collect and transmit detailed logs effectively for abnormality detection, which hampers the server's ability to detect various abnormalities in a timely and accurate manner.
Innovation Solution
A log collection system comprising an in-vehicle apparatus connected to a server via a network, equipped with a log collection unit, log storage unit, log priority information storage, accumulation log determination unit, communication unit, and log priority table management unit, allowing for prioritization and adaptive log collection based on server instructions to enhance log transmission and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed logs are collected and transmitted to the server for abnormality detection, then the server can detect various abnormalities accurately, but the in-vehicle apparatus cannot collect sufficient logs due to limited resources and storage capacity
Solution Approach 1:
The patent segments logs into different priority levels (first priority, second priority, third priority) based on their importance for abnormality detection. This segmentation allows the limited storage resources to be allocated efficiently, with high-priority logs being retained and transmitted while lower-priority logs are discarded when storage is full.
Solution Approach 2:
The patent applies different quality standards to different logs based on their priority. High-priority logs associated with critical abnormalities are preserved with higher quality and transmitted to the server, while lower-priority logs are discarded more readily. This ensures that the most important information is maintained within the constraints of limited storage capacity.
2Loss of information
If all collected logs are transmitted to the server, then complete information is available for analysis, but transmission time and network bandwidth are excessive
Solution Approach 1:
The patent extracts only the essential high-priority logs from the complete set of collected logs for transmission to the server. By identifying and extracting only those logs that are critical for abnormality detection (first and second priority logs), the system maintains information completeness for security analysis while dramatically reducing transmission time and network bandwidth requirements.
3Quantity of substance
If the in-vehicle apparatus has large storage capacity for log accumulation, then more logs can be collected, but the device size and cost increase due to space constraints
Solution Approach 1:
The patent implements a dynamic log management system where the storage allocation and retention policies adapt based on the current state of the system. The log storage unit dynamically adjusts what logs to retain based on priority levels, and the log transmission is triggered dynamically when high-priority logs are generated or when storage reaches capacity. This dynamic approach maximizes the effective use of limited storage space without requiring additional hardware capacity.
Data Source
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AI summary
An in-vehicle apparatus is an in-vehicle apparatus connected to a server via a network and mounted on a vehicle. The in-vehicle apparatus includes: a log collection unit configured to collect a log; a log storage unit for accumulation of at least a part of the log; a log priority information storage unit storing log priority information indicating a priority of a log to be accumulated in the log storage unit; an accumulation log determination unit configured to determine a log to be accumulated in the log storage unit based on the log priority information; a communication unit configured to transmit the log accumulated in the log storage unit to the server; and a log priority table management unit configured to update the log priority information stored in the log priority information storage unit based on an update command from the server.