Data Logging Apparatus Event-Cause Analysis
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Solution Overview
Problem
Existing industrial installations struggle to analyze the cause of errors and failures due to the lack of storage of communications messages and I/O signals before and after event occurrences, limiting their ability to recover from errors and failures effectively.
Innovation Solution
A data logging apparatus that stores communications data between a first and second apparatus, determines if an event has occurred, and stores log data within predetermined time periods before and after the event as event data, including a storage unit, a determination unit, and a measurement unit to measure temperature and vibration values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If only event occurrence messages are stored, then storage space is saved, but the ability to analyze the cause of errors and failures is lost
Solution Approach 1:
The system pre-configures a determination unit with event determination criteria before operations occur. This unit continuously monitors communications data and proactively identifies events by comparing real-time data against predetermined criteria, enabling early detection and analysis before failures manifest
Solution Approach 2:
The patent segments stored data into two categories: comprehensive communications data (for analysis) and event occurrence messages (for notification). This segmentation allows the system to retain detailed communications data necessary for cause analysis while separately managing event messages, resolving the contradiction between storage efficiency and analytical capability
2Loss of information
If comprehensive communications data is stored continuously, then cause analysis capability is improved, but storage space is consumed
Solution Approach 1:
The determination unit is pre-configured with event determination criteria that define what constitutes an event. This preliminary setup enables the system to automatically identify and flag relevant communications data associated with events, allowing selective retention of only the data necessary for cause analysis rather than storing all communications data continuously
Solution Approach 2:
The system applies different storage qualities to different data segments: comprehensive communications data is retained for periods surrounding identified events (where high-quality detailed storage is needed for analysis), while other communications data may be stored in reduced form or discarded (where full detail is not necessary)
Data Source
AI summary
A data logging apparatus stores communications data transmitted/received between a first apparatus and a second apparatus as log data, determines whether an event occurs based on the communications data, and stores log data within predetermined time periods before and after the time point at which the event has occurred, i.e., between a log start time and a log end time as event data. The data logging apparatus can efficiently store data that is used for analyzing the cause of the event occurring in the first apparatus.