Trigger-Routed Logging Control for Multi-Device Log Capture
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Solution Overview
Problem
Existing systems lack the flexibility to determine the destination of a trigger signal for logging, limiting the ability to selectively perform logging based on triggers in a system with multiple logging devices.
Innovation Solution
A logging system that includes a logging device, a detection device, and a central processing unit, where the central processing unit determines whether logging is performed based on trigger signals received from the detection device, relay settings, or added trigger information, allowing flexible control over logging operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If trigger signal destination is fixed, then system simplicity is improved, but logging flexibility deteriorates
Solution Approach 1:
The central processing unit acts as an intermediary between the trigger source and logging devices. It receives trigger signals and selectively relays them to appropriate logging devices based on relay setting information. This intermediary role adds minimal complexity to the system architecture while enabling flexible destination determination through software-based routing rules.
Solution Approach 2:
The system uses parameter-based control through relay setting information that defines trigger routing behavior. By changing these parameters (relay settings), the system can dynamically alter which logging devices receive triggers without any physical reconfiguration, maintaining system simplicity while achieving logging flexibility.
Data Source
AI summary
A log data analysis support system includes a logging device to log control data, a logging device to detect a trigger, and a central processing unit included in a programmable controller and connected to the logging devices. Whether the logging device logs the control data based on the trigger detected by the logging device is determined based on whether the logging device transmits a trigger signal to the logging device, whether the central processing unit transmits the trigger signal based on at least one of trigger sharing information or first trigger information added by the logging device to the trigger signal, or at least one of trigger setting information or second trigger information added to the trigger signal transmitted to the logging device from the central processing unit.