Failure Storage Device Selective Data Retention
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Solution Overview
Problem
Conventional failure storage devices face challenges in performing precise failure analysis due to the overwriting of initial failure data when subsequent failures of higher importance occur, leading to difficulties in recognizing the cause of sequential failures and increasing storage capacity requirements.
Innovation Solution
A failure storage device with a failure storage control unit that selectively stores data based on detected failure details, prioritizing the initial failure and storing only failure details of subsequent failures within a prescribed period, thereby recognizing time-series relationships and reducing storage capacity needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If failure data is stored using conventional importance-based overwriting, then storage capacity is reduced, but initial failure data is lost making precise failure analysis difficult
Solution Approach 1:
The patent segments failure data into two distinct categories: initial failure data and subsequent failure data. This segmentation allows the system to preserve initial failure information while still managing storage efficiently through selective overwriting of subsequent failures, thus resolving the contradiction between limited storage capacity and preservation of critical failure data.
Solution Approach 2:
The patent implements preliminary action by immediately storing and preserving initial failure data when a failure is detected, before any subsequent failures occur. This ensures that critical initial failure information is captured and protected from being overwritten, while still allowing the system to manage subsequent failures within storage constraints.
2Measurement precision
If all failure data is stored to enable precise analysis, then analysis accuracy improves, but storage capacity requirements increase
Solution Approach 1:
The patent applies local quality by treating different failure data with different storage priorities and methods. Initial failure data receives special protection and preservation, while subsequent failure data follows conventional overwriting rules. This differentiated approach ensures precise failure analysis for critical initial failures while maintaining efficient storage capacity utilization.
3Reliability
If sequential failure relationships are tracked, then cause identification improves, but data storage complexity increases
Solution Approach 1:
The patent segments the tracking of failure relationships by specifically identifying and preserving the initial failure as a distinct entity. This segmentation simplifies the complexity by focusing on the critical initial failure event while still allowing subsequent failures to be recorded within storage limits, thereby improving cause identification without excessive complexity.
Solution Approach 2:
The patent extracts and separates the initial failure data from subsequent failure data, giving it special status and protection. This extraction simplifies the overall data storage structure by clearly distinguishing between critical initial failures and subsequent failures, making cause identification more straightforward while managing storage complexity.
Data Source
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AI summary
There is provided a failure storage device capable of storing failure details and data to carry out failure determination more accurately while preventing an increase in storage capacity of data with regard to failures. The failure storage device includes a failure storage control unit (3) configured to, when a failure determination unit (2) detects a failure of a target to be controlled, carry out failure storage processing to select data to be stored depending on failure details of the detected failure and store the selected data in a failure analysis data storage unit (33) and a failure name storage unit (35) as storage means, wherein, in the failure storage processing, when several failures are detected within a prescribed period of time, the failure storage control unit (3) stores failure details of an initial failure in the failure name storage unit (35), stores data selected in accordance with the failure in the failure analysis data storage unit (33), and stores only failure details of other failures detected after the initial failure in the failure name storage unit (35).