Time-Series Data Compression for Accurate Building Energy Management
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Solution Overview
Problem
Current building energy management systems face challenges in efficiently managing data communication loads, which can hinder effective energy management due to increased data transmission from edge servers to the cloud, leading to inefficient energy management when data volume decreases.
Innovation Solution
A method involving the collection of time-series data, division into reference and correction sections, calculation of correction values using a derived equation, verification of accuracy, and storage of data to reduce data volume while maintaining high accuracy, allowing for efficient data management and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the amount of data transmitted from the edge server to the cloud is increased to improve energy management accuracy, then the energy management efficiency is improved, but the data communication load is increased
Solution Approach 1:
The patent segments time-series data into reference sections (grouped time points) and correction sections (remaining time points). By processing and storing only the essential reference section data and generating correction values for the correction section, it reduces the overall data transmission volume while maintaining the ability to reconstruct accurate energy management information.
Solution Approach 2:
The patent transforms the data representation by changing from storing all raw detection values to storing reference values, time intervals, and correction values. This parameter transformation reduces data volume while preserving the information needed for accurate energy management through mathematical reconstruction.
2Quantity of substance
If the amount of data transmitted from the edge server to the cloud is decreased to reduce data communication load, then the data communication load is reduced, but the energy management efficiency deteriorates
Solution Approach 1:
The patent performs preliminary processing of time-series data at the edge server by dividing it into reference and correction sections before transmission. This preliminary action organizes the data in a compressed format that reduces communication load while preserving all necessary information for subsequent energy management operations through the reconstruction process.
Solution Approach 2:
The patent introduces correction values as an intermediary mechanism that bridges the gap between reduced data transmission and maintained energy management accuracy. These correction values, combined with reference values and time intervals, enable accurate reconstruction of the original time-series data for energy management purposes.
3Measurement precision
If all detection values are stored in the cloud to maintain data accuracy, then the data accuracy is maintained, but the data storage volume is increased
Solution Approach 1:
The patent extracts only the essential reference section data (reference values, time intervals, and correction values) from the complete time-series detection data. By taking out only the necessary components needed to reconstruct the full dataset, it maintains data accuracy for energy management while significantly reducing the storage volume required in the cloud.
Data Source
AI summary
A method of managing data is proposed. The method includes collecting information, wherein detection values respectively matched to time points successive in time series are continuously collected, dividing sections, wherein a reference section is set, and remaining time points is divided into a correction section, calculating an equation, wherein a time point of the reference section and a detection value matched thereto are respectively set as a reference time point and a reference value, performing correction, wherein correction values calculated according to a time interval are calculated, verifying accuracy, wherein whether a ratio of the time points of the correction section to the time points is less than or equal to a preset allowable ratio is checked, and storing the data, wherein the reference value, equation, detection values or correction values, and correspondingly matched time points are stored as the data for the reference section and correction section.