Facility Management Device Abnormal Communication Data Analysis

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Solution Overview

Problem

Existing facility management systems face challenges in efficiently acquiring and analyzing transmission waveforms during abnormal communication events, particularly in low-frequency occurrences, and struggle with reproducibility due to the need to consider equipment positions and connection numbers in communication states.

Innovation Solution

A facility management device that includes a communicator, temporary-memory controller, abnormality determiner, and data copier to store and analyze communication data and transmission waveforms, allowing for efficient identification and storage of abnormal data, reducing the burden on workers by correlating communication data with transmission waveforms and storing them in separate memory for analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If transmission waveform is acquired using a typical oscilloscope with voltage level setting, then the device can analyze transmission waveform, but it cannot acquire the waveform at the instant when abnormal communication occurs because abnormal communication occurs irregularly and unpredictably

Engineering Contradiction:

Improvewaveform acquisition timing precisionVSAvoidoperational burden on worker

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The system performs preliminary actions by continuously monitoring communication data and pre-acquiring transmission waveforms before abnormal communication occurs. When abnormality is detected, the waveform data is already available for immediate analysis, eliminating the need for workers to manually capture waveforms at the right moment.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system establishes a feedback loop where communication data is continuously analyzed for abnormalities, and when abnormality is detected, this triggers the acquisition and storage of corresponding transmission waveform data. This automated feedback mechanism ensures waveform data is captured precisely when needed without manual intervention.

Inventive Principle:

Principle #23Feedback

2Reliability

If transmission waveform is continuously monitored to capture abnormal communication instances, then the waveform can be acquired when abnormality occurs, but the system complexity and data storage requirements increase significantly

Engineering Contradiction:

Improveabnormal communication detection reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system extracts only the relevant transmission waveform data corresponding to abnormal communication events, rather than storing or processing all waveform data continuously. This selective extraction approach maintains high detection reliability while significantly reducing system complexity and storage requirements.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs preliminary analysis of communication data using protocol rules to identify abnormalities before waveform data is fully captured or stored. This allows the system to prepare and filter waveform data in advance, reducing the burden of processing and storing unnecessary data while maintaining reliable abnormality detection.

Inventive Principle:

Principle #10Preliminary action

3Stability of the object's composition

If communication data is stored for long-term analysis to reproduce communication state, then reproducibility is improved, but the storage capacity requirements and data management complexity increase

Engineering Contradiction:

Improvecommunication state reproducibilityVSAvoidstorage capacity

Core Design Contradiction:

Stability of the object's compositionVSQuantity of substance

Solution Approach 1:

The system extracts and stores only the specific communication data and transmission waveform data associated with abnormal communication events, rather than storing all communication data for long-term reproduction. This selective storage approach maintains the ability to reproduce and analyze abnormal states while significantly reducing storage capacity requirements.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs preliminary identification and filtering of abnormal communication events using protocol analysis, and only stores data related to these identified events. This preliminary action ensures that only relevant data is stored for future reproduction and analysis, maintaining reproducibility while minimizing storage requirements.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP2811693B1Facility management device, facility management system, facility management method, and program

Publication Date: 2019.02.27 MITSUBISHI ELECTRIC CORP

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AI summary

A facility management device (200) manages communication data that is transmitted and received between remote controllers (130a, 130b) and an outdoor unit (110) and/or indoor units (120a,120b). A temporary-memory controller (421) stores communication data that was received by a communicator (210), and transmission-waveform data that was acquired by a transmission-waveform data acquirer (220) for a specified amount of time in a temporary memory (310). An abnormality determiner (424) determines whether or not there is abnormality in the communication data that is stored in the temporary memory (310). When it is determined that there is abnormality in the communication data stored in the temporary memory (310), a data copier (425) stores all of the data that is stored in the temporary memory (310) in an abnormal-data memory (330).