OT-IT Data Management Using Reduced and Differential Data
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Solution Overview
Problem
Current data management systems face challenges in efficiently reducing the amount of data to be transmitted while maintaining control and security, particularly in integrating OT and IT systems, where excessive data transmission is impractical and sensitive information needs to be protected.
Innovation Solution
A data management system that includes a data size reduction unit using a low-pass filter to generate reduced data with a wider sampling interval, and a differential generating unit to create differential data, which is transmitted to other apparatuses, while recording the differential data for continuous control and security measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If measurement data is transmitted in real-time from OT to IT systems, then control responsiveness and security are improved, but data transmission volume and network load increase excessively
Solution Approach 1:
The patent segments data into two categories: measurement data for control purposes and analysis data for IT processing. The measurement data is transmitted in real-time with original sampling intervals, while analysis data is transmitted at wider sampling intervals. This segmentation allows control systems to receive necessary data without being overwhelmed by excessive transmission volume.
Solution Approach 2:
The patent introduces a dual transmission path dimension: one path transmits measurement data at original sampling intervals for control, another path transmits analysis data at wider sampling intervals for IT processing. This dimensional separation resolves the contradiction by allowing different data types to travel through different channels with different transmission frequencies.
2Productivity
If data is transmitted at wider sampling intervals to reduce transmission volume, then data transmission efficiency is improved, but real-time control capability deteriorates
Solution Approach 1:
The patent divides data into measurement data (transmitted at original sampling intervals for real-time control) and analysis data (transmitted at wider sampling intervals for efficient processing). This ensures that real-time control capability is maintained through the measurement data channel while overall transmission efficiency improves through the analysis data channel.
Solution Approach 2:
The data management system performs multiple functions: it manages real-time control data transmission, handles analysis data transmission, performs abnormality detection, and manages data archiving. By making the system multi-functional, it can simultaneously maintain real-time control capability and improve transmission efficiency through different data processing paths.
3Reliability
If all measurement data is retained for security and analysis purposes, then data availability and security are improved, but storage requirements and system complexity increase
Solution Approach 1:
The patent segments data retention into two categories: measurement data retained for control purposes and analysis data retained for IT processing. This segmentation simplifies data management by allowing different retention policies and storage strategies for different data types, reducing overall system complexity while maintaining data availability.
Solution Approach 2:
The patent implements selective data retention where analysis data can be discarded after serving its analytical purpose, while measurement data is retained for control. The system can recover or reconstruct analysis data from measurement data when needed. This approach reduces storage requirements and management complexity while maintaining necessary data availability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces data transmission while allowing for real-time control and security by generating reduced data and differential data, enabling flexible data transmission and protecting sensitive information.
Implementation Method 1
The data size reduction unit 130 has a low-pass filter for processing the measurement data
Data Source
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AI summary
[Technical Solution] A data management system is provided comprising a data acquisition unit configured to acquire measurement data obtained by measuring a measurement target, a data recording unit configured to record the measurement data, a data size reduction unit configured to generate reduced data obtained by reducing an amount of data of the measurement data, a differential generating unit configured to generate differential data indicating a difference between the measurement data and the reduced data, a differential recording unit configured to record the differential data, and a data transmission unit configured to transmit the reduced data to another data utilization apparatus utilizing data.