Gateway Device Anomaly Detection with Dynamic Rule Updates
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Solution Overview
Problem
Existing techniques for monitoring industrial equipment using IoT are insufficient in detecting anomalies not predefined in judgment rules, leading to incomplete detection of equipment status.
Innovation Solution
An analysis system comprising gateway devices and an analysis server, where the gateway device collects equipment data, performs initial anomaly detection, and transmits results to the server, which further analyzes and updates judgment rules to detect unknown anomalies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the server analyzes all acquired data, then comprehensive anomaly detection is achieved, but heavy load is caused on the server
Solution Approach 1:
The system divides anomaly detection into two segments: the gateway device performs initial anomaly detection using predefined judgment rules to filter obvious anomalies, while the server performs comprehensive analysis on remaining data to detect unknown anomalies. This segmentation reduces server load while maintaining detection accuracy.
Solution Approach 2:
The gateway device performs partial anomaly detection using predefined rules, handling common known anomalies locally. This partial action reduces the volume of data requiring server analysis, thereby reducing server load while still achieving comprehensive anomaly detection through the combination of gateway and server analysis.
2Productivity
If predefined judgment rules are used for anomaly detection, then known anomalies are easily detected, but unknown anomalies cannot be detected
Solution Approach 1:
The gateway device performs preliminary anomaly detection using predefined judgment rules to quickly identify known anomalies. This preliminary action enables fast detection of common issues while the server subsequently performs comprehensive analysis to detect unknown anomalies that were not captured by predefined rules.
Solution Approach 2:
The system implements feedback by transmitting anomaly data from the gateway to the server for comprehensive analysis. The server's comprehensive analysis results provide feedback that complements the gateway's preliminary detection, ensuring both known and unknown anomalies are detected while maintaining high detection speed through the two-stage approach.
Data Source
AI summary
A gateway device collects equipment data and judges whether or not there is any anomaly in the collected equipment data according to a judgement rule(s). An analysis server having an analysis unit transmits and receives information to and from the gateway device and analyzes the received information. An input-output unit executes input and output of the server judgement rule(s), and the gateway device transmits data including a judgement result and the equipment data to the analysis server, wherein the analysis server analyzes the transmission data, and if equipment data indicating an anomaly different from an anomaly defined by the judgement rule(s) exists in the equipment data, the analysis server updates information of the server judgement rule(s) based on input information and transmits the updated information to the gateway device; and the gateway device updates information of the judgement rule(s) based on the server judgement rule information.