Vehicle Operation Data Prioritization Under Limited Storage

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Solution Overview

Problem

In vehicles operating in poor communication environments, important operation data may be overwritten due to insufficient storage capacity, preventing its analysis.

Innovation Solution

A data collection device that prioritizes storage and transmission of high-priority operation data, using an event detection unit to identify critical events, a priority determination unit to classify data, and a writing unit to overwrite low-priority data when storage is full, ensuring transmission of high-priority data to a server.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If operation data is continuously recorded in a storage device with insufficient capacity, then the storage device can record new operation data, but old operation data is overwritten and important failure-related data may be lost

Engineering Contradiction:

Improvestorage capacityVSAvoidoperation data

Core Design Contradiction:

Quantity of substanceVSLoss of information

Solution Approach 1:

The patent applies local quality by assigning different priority levels to different operation data based on their importance. High-priority data (failure-related, abnormal operation) is distinguished from normal operation data. The storage system selectively preserves high-priority data while allowing low-priority data to be overwritten, creating a differentiated storage quality across different data types.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the parameter of data priority from a static property to a dynamic attribute that can be adjusted based on communication status. When communication is unavailable, the system dynamically increases the retention priority of high-priority data and decreases the retention priority of low-priority data, allowing parameter-based selective preservation.

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If the storage device records all operation data equally, then data storage is simple, but important failure-related data may be overwritten when storage capacity is insufficient

Engineering Contradiction:

Improvestorage management complexityVSAvoiddata integrity

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent applies preliminary action by pre-classifying operation data into priority levels before storage based on event detection. The event detection unit identifies abnormal conditions and assigns high priority to related data in advance. This preliminary classification ensures that when storage capacity is reached, the system can immediately identify which data to preserve without complex real-time decision-making.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent segments operation data into different priority categories (high priority and low priority) based on their relationship to detected events. This segmentation allows the storage system to manage different data types separately, preserving high-priority data while overwriting low-priority data, thereby maintaining data integrity without requiring complex overall management.

Inventive Principle:

Principle #1Segmentation

3Loss of information

If the vehicle transmits all recorded operation data to the server, then comprehensive data analysis is enabled, but transmission time and bandwidth are excessively consumed

Engineering Contradiction:

Improvedata completenessVSAvoidtransmission time

Core Design Contradiction:

Loss of informationVSLoss of time

Solution Approach 1:

The patent extracts and transmits only high-priority operation data to the server, separating critical failure-related data from routine operation data. The transmission unit selectively sends high-priority data when communication is available, eliminating the need to transmit large volumes of low-priority normal operation data, thus reducing transmission time and bandwidth consumption while maintaining data completeness for critical issues.

Inventive Principle:

Principle #2Taking out (Extraction)

4Adaptability or versatility

If the vehicle operates in a poor communication environment, then the vehicle can continue operating independently, but operation data cannot be transmitted and may be overwritten

Engineering Contradiction:

Improveoperation independenceVSAvoiduntransmitted operation data

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies dynamics by making the data retention and transmission strategy adaptive to communication conditions. When communication is available, the system transmits high-priority data dynamically. When communication is unavailable, the system dynamically adjusts storage behavior to preserve high-priority data longer and overwrite low-priority data selectively, rather than using a fixed storage policy.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260080728A1Data collection device and data collection method

Publication Date: 2026.03.19 KOMATSU LTD

AI summary

A priority determination unit determines, in accordance with an event, priority of target operation data that is operation data related to the event. A writing unit stores the target operation data in a storage unit. In a case in which a capacity for recording the target operation data is insufficient, the writing unit overwrites operation data having relatively low priority among pieces of operation data stored in the storage unit with the target operation data. A transmission unit transmits operation data having relatively high priority among pieces of operation data stored in the storage unit to a management server with priority over operation data having relatively low priority.