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Compression method for massive fuel gas data

A compression method and gas technology, applied in electrical components, code conversion, etc., can solve problems such as high accuracy, poor tolerance, and inability to effectively reflect data conditions, and achieve improved compression accuracy, high compression and decompression accuracy, and prevention. The effect of mutated data being omitted

Inactive Publication Date: 2015-06-03
南京邦耀科技发展有限公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that due to the huge number of monitoring data points, the existing compression method has poor tolerance and high true rate, and cannot effectively reflect the actual data situation after data decompression

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  • Compression method for massive fuel gas data
  • Compression method for massive fuel gas data
  • Compression method for massive fuel gas data

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Embodiment Construction

[0022] Current "revolving door" data compression methods reduce data capacity by discarding some data during the compression process. It is required that the discarded data must not affect the recovery and reconstruction of the data within a certain range. Therefore, the important index to evaluate the quality of the compression process is usually the data decompression error. To solve this problem, the present invention calculates the absolute deviation between the expected compression performance and the actual performance during the data compression process, automatically adjusts the compression tolerance ΔE according to the size of the absolute deviation, and uses the adjusted ΔE as the next set of data The compression offset, so that the actual compression performance is constantly approaching the expected performance.

[0023] Actual compression performance is generally measured in terms of compression ratio and error. Assume that the number of a set of gas data is n, d...

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Abstract

The invention provides a compression method for massive fuel gas data. The compression method comprises the following steps: initializing parameters, comparing record time intervals, compressing 'rotation gate' data, decompressing data, calculating deviation and adjusting compression allowance according to the deviation. By adopting the compression method, negative feedback is adopted to adjust compression parameters in real time, so that relatively high compression precision can be kept constantly, the fuel gas data can be precisely compressed according to the use time regular of the fuel gas data, and the compression method is relatively good in application prospect.

Description

technical field [0001] The invention relates to a data compression method, in particular to a method for compressing massive gas data. Background technique [0002] With the continuous development of automation technology, related technologies and products provide a solid technical foundation for the supervision and establishment of gas pipeline network and equipment operation status information. The gas information supervision system includes the collection, feedback, storage and analysis of gas data. The collection of data includes the collection of the working pressure and flow of the pipeline network and gas equipment operation, as well as the collection of safety alarms for special users. The data is fed back to the data center through communication means to help managers understand the operation status in a timely and accurate manner. Massive process data are generated every day in urban gas pipeline networks, pressure regulating stations, user gas meters and other mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M7/30
Inventor 魏晓冬张俊峰俞辉
Owner 南京邦耀科技发展有限公司
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