Sensor Data Reduction Using Low-Pass Filtering and Differential Storage
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Solution Overview
Problem
Current data management systems face challenges in efficiently reducing data volume for transmission while maintaining control and security, particularly in industrial settings where data from various sensors needs to be managed and transmitted effectively, without compromising real-time control capabilities.
Innovation Solution
A data management system that includes a data acquisition unit, a data size reduction unit using low-pass filters to generate reduced data, a differential generating unit to create differential data, and a data transmission unit to send reduced data to other apparatuses, while recording differential data for control purposes, with optional features like bit width reduction and data erasure based on capacity or time thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement data is transmitted in full detail to other apparatuses, then data utilization accuracy is improved, but data transmission volume increases
Solution Approach 1:
The patent segments data into two types: reduced data (low-pass filtered) for general transmission and differential data (high-frequency components) for selective transmission. This segmentation allows the system to transmit only necessary data components, reducing overall transmission volume while maintaining accuracy when needed.
Solution Approach 2:
The patent changes the frequency domain parameters of measurement data by applying low-pass filtering to generate reduced data. This parameter transformation separates high-frequency differential components from low-frequency base components, enabling efficient data compression while preserving reconstructability.
2Measurement precision
If all measurement data is retained for control purposes, then control precision is improved, but data storage requirements increase
Solution Approach 1:
The patent segments stored data into reduced data (retained locally) and differential data (selectively retained). This segmentation enables the system to maintain control precision by keeping essential reduced data while storing differential data only when needed for reconstruction, reducing overall storage requirements.
3Quantity of substance
If reduced data is transmitted instead of full measurement data, then data transmission volume is reduced, but data reconstruction capability deteriorates
Solution Approach 1:
The patent uses differential data as an intermediary component that bridges the gap between reduced data and original measurement data. By transmitting differential data selectively, the system enables accurate reconstruction of original data when needed, while maintaining reduced transmission volume for routine operations.
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 volume while allowing for real-time control and security measures by generating reduced data through low-pass filtering and differential data recording, enabling flexible data transmission and secure data handling.
Implementation Method 1
The data size reduction unit may have a low-pass filter for processing the measurement data.
Data Source
AI summary
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.