Field-Bus Frame Interval Diagnostic Unit for Early Noise Detection
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Solution Overview
Problem
Current communication quality diagnostic techniques in field-bus systems rely heavily on frame destruction as an index, which is not predictive and often detects issues too close to actual communication trouble, lacking the ability to provide early warnings for noise-induced problems.
Innovation Solution
A communication quality diagnostic unit that monitors and analyzes frame-interval time, using a frame-interval time detector, abnormality determiner, and notifier to identify anomalies before frame destruction occurs, allowing for proactive alerts and maintenance scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If frame destruction is used as the diagnostic index, then communication trouble can be detected, but early warning capability is lost and detection occurs too close to actual trouble
Solution Approach 1:
The patent applies preliminary action by monitoring frame interval time variations before frame destruction occurs. The diagnostic unit detects abnormalities in the timing intervals between consecutive frames, which serve as early warning signs of communication deterioration. This allows the system to identify potential issues and alert operators before actual frame destruction happens, enabling preventive maintenance and avoiding communication failures.
2Productivity
If multiple equipment units are interconnected on one field-bus segment, then mounting efficiency is enhanced, but communication quality deteriorates due to noise affecting all units
Solution Approach 1:
The patent implements feedback by continuously monitoring frame interval times and comparing them against expected values. When variations exceed a threshold, the diagnostic unit generates alerts. This feedback mechanism allows the system to maintain high device density on segments while providing real-time monitoring of communication health, enabling early detection of noise-induced issues that could affect multiple units.
Data Source
AI summary
The invention achieves a communication quality diagnostic unit capable of detecting an omen phenomenon of a communication trouble early in a stage prior to actual emergence of the communication trouble due to a noise, thereby issuing a warning. The communication quality diagnostic unit for diagnosing quality of communication for transmitting and receiving frames at predetermined interval time, comprising a frame-interval time detector for monitoring interval time between the frames, a frame-interval abnormality determiner for making determination as the case of diagnostic abnormality when a predetermined threshold value is exceeded by frame-interval time as detected, and a diagnostic abnormality notifier for notifying a host unit of the diagnostic abnormality as an alarm.