Control Device Log Extraction for Microscopic System Failure Diagnosis

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Solution Overview

Problem

Sophisticated microscopic systems face challenges in diagnosing failures due to large log file volumes, which lead to time-consuming problem-solving, increased costs, and inefficient data transfer, making prompt issue resolution difficult.

Innovation Solution

A control device that records and extracts logs in units of operation states, allowing for the specification of failure causes by designating specific operation states, reducing the log volume sent to support divisions and automating the extraction process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If the entire log file is sent to the support division for analysis, then complete failure information is provided, but the data transfer time and cost increase significantly

Engineering Contradiction:

Improvefailure information completenessVSAvoiddata transfer time

Core Design Contradiction:

Loss of informationVSLoss of time

Solution Approach 1:

The patent extracts only the necessary log entries related to failure events and their surrounding context from the entire log file. The control device identifies failure events by detecting abnormal conditions and extracts only the log entries within a predetermined time window around these failures, excluding unrelated log data. This extraction approach provides complete failure information while significantly reducing the volume of data transferred to the support division.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent segments the log file into distinct units based on operational states or time periods. The control device divides the continuous log stream into manageable segments and selectively transmits only the relevant segments containing failure information. This segmentation enables efficient data transfer by sending only the necessary portions of the log file rather than the entire file.

Inventive Principle:

Principle #1Segmentation

2Loss of information

If the entire log file is sent to the support division, then all event information is included, but the problem-solving process becomes time-consuming

Engineering Contradiction:

Improveevent information completenessVSAvoidproblem-solving speed

Core Design Contradiction:

Loss of informationVSProductivity

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The control device performs preliminary analysis of the log file locally before transmitting data to the support division. By pre-identifying failure events and extracting relevant log entries in advance, the system prepares a focused dataset that enables rapid problem-solving without requiring the support division to search through the entire log file.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If detailed log analysis is performed, then accurate failure diagnosis is achieved, but the cost increases

Engineering Contradiction:

Improvefailure diagnosis accuracyVSAvoidprocessing cost

Core Design Contradiction:

Measurement precisionVSLoss of energy

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent applies partial analysis by examining only the portion of the log file that is relevant to failure events. Instead of analyzing the entire log file, the control device focuses analysis on the extracted segments containing failure information, achieving accurate failure diagnosis while reducing processing costs associated with analyzing unnecessary log data.

Inventive Principle:

Principle #16Partial or excessive action

4Loss of time

If the log file volume is reduced for transmission, then data transfer efficiency improves, but the complexity of log extraction increases

Engineering Contradiction:

Improvedata transfer timeVSAvoidlog extraction complexity

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The control device automatically performs log extraction and filtering without requiring manual intervention or complex external processing systems. The system self-manages the identification of failure events and extraction of relevant log entries using built-in detection algorithms, simplifying the overall process despite the increased complexity of the extraction logic itself.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent implements dynamic log extraction by adjusting the extraction criteria based on the detected failure events. The control device dynamically determines which log entries to extract based on the context and timing of failure events, allowing flexible adaptation to different failure scenarios while maintaining efficient data transfer.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11836063B2System, control device, log extraction method, and computer-readable medium

Publication Date: 2023.12.05 EVIDENT CORP

AI summary

A system includes a control device including a processor. The processor is configured to record a log into a log file, the log regarding information on an event having occurred in the system such that an operation state of the system at a point in time of the occurrence of the event is allowed to be specified as any of a plurality of operation states and an operation state different from the plurality of operation states. Here, the plurality of operation states correspond to a plurality of pieces of sequence processing previously defined. The processor is configured to extract the log from the log file, based on information designating a particular operation state as the operation state of the system, in units of operation states of the system such that the log includes information on an event having occurred in the particular operation state.