Vehicle Data Storage Segmentation for Offboard Analysis
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Solution Overview
Problem
Modern vehicles, especially autonomous vehicles, face challenges with limited onboard data storage capacity due to the generation of large amounts of data during operation, necessitating improved methods to manage and optimize data storage for both onboard and offboard analysis.
Innovation Solution
A data scribe task is implemented onboard the vehicle to decouple onboard and offboard data by applying different logging policies, reducing data elements and frequency, and transferring optimized data to offboard storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all generated messages are stored onboard for offboard analysis, then data availability for offboard use is improved, but onboard storage capacity is exceeded
Solution Approach 1:
The patent divides data into two segments: messages needed for onboard processing and messages needed for offboard analysis. By segmenting the data storage requirements, the system can optimize storage capacity allocation, storing only essential messages onboard while preparing separate data sets for offboard analysis, thus resolving the contradiction between data availability and storage capacity
Solution Approach 2:
The patent extracts only the necessary data elements from complete messages for offboard analysis. By taking out only the required information rather than storing entire messages, the system reduces the data volume requiring onboard storage while maintaining data availability for offboard use, effectively addressing the storage capacity constraint
2Quantity of substance
If data is reduced for offboard use, then onboard storage requirements are decreased, but data quality for analysis may be degraded
Solution Approach 1:
The patent applies different quality standards to different data sets based on their intended use. Messages retained onboard maintain full quality and completeness for real-time processing, while offboard data is reduced to essential elements appropriate for analysis purposes. This local quality differentiation allows storage optimization without compromising the quality required for each specific function
3Quantity of substance
If different logging policies are applied to onboard and offboard data, then storage efficiency is improved, but system complexity increases
Solution Approach 1:
The patent introduces a data scribe task as an intermediary component that manages the complexity of implementing different logging policies. This mediator handles the coordination between onboard and offboard data management, applying appropriate logging policies to each data set while shielding the rest of the system from the complexity of dual-policy management, thus improving storage efficiency without proportionally increasing overall system complexity
Data Source
AI summary
This document discloses system, method, and computer program product embodiments for managing data generated by one or more systems of a vehicle. In various embodiments, a processor onboard a vehicle receives messages generated by one or more onboard systems of the vehicle. The system saves a first set of the messages to a first storage location on the vehicle according to a first data logging policy. The system processes a second set of the messages to reduce data elements and yield offboard data that is designated for offboard use. The first and second sets of messages may or may not overlap with each other. The system saves the offboard data to a second storage location that is onboard the vehicle and subject to a second data logging policy. The second data logging policy differs from the first data logging policy.