High-efficiency data compression method for centralized signal monitoring system
A data collection and monitoring system technology, applied in transmission systems, digital transmission systems, error prevention, etc., can solve the problems of inability to store historical data for a long time, large data storage space consumption, affecting data real-time performance, etc., to reduce the collection of data. Storage space and network transmission bandwidth, the effect of improving availability
Active Publication Date: 2021-02-09
CHINA RAILWAYS CORPORATION +1
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Problems solved by technology
The data processing process of the traditional signal centralized monitoring system does not perform differential compression processing on the collected data. In practical applications, the direct consequences are: first, the data storage space consumes a lot, and historical data cannot be stored for a long time; second, the data The large amount of transmission takes up too much network bandwidth, which affects the real-time performance of network transmission of other important data
reduce the availability of the entire system
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0034] Such as figure 1 As shown, the collected data of the signal centralized monitoring system has the following characteristics: for continuous data collection (such as switching value, analog quantity, etc.), the collection frequency is high but the number of changes between continuous data is small and the change range is small; for discrete data collection Data (such as turnout action curves, etc.), whose collection frequency is not fixed but there a...
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The invention relates to a method for efficiently compressing collected data for a centralized signal monitoring system, comprising: (1) performing compression preprocessing according to the type and characteristics of the collected data to form a standardized serialization unit for the collected data; (2) compressing the collected data The data in the serialization unit is compressed and arbitrated, and the data compression method is selected to meet the expected compression ratio; (3) The data in the serialization unit of the collected data is compressed, and the compressed key data and the compressed data are persistently compressed. Data, provided for data transmission and data storage; (4) Decompress the serialized data, select the corresponding decompression method according to the persistent compressed key data in step (3), and restore the compressed data losslessly data before compression. Compared with the prior art, the present invention can effectively reduce the storage space of collected data and the network transmission bandwidth in the centralized signal monitoring system, thereby improving the overall usability of the centralized signal monitoring system.
Description
technical field [0001] The invention relates to a railway signal system, in particular to a method for efficiently compressing collected data used in a signal centralized monitoring system. Background technique [0002] With the development of centralized signal monitoring system, the amount of data collected is increasing. The data processing process of the traditional signal centralized monitoring system does not perform differential compression processing on the collected data. In practical applications, the direct consequences are: first, the data storage space consumes a lot, and historical data cannot be stored for a long time; second, the data The large amount of transmission takes up too much network bandwidth, which affects the real-time performance of network transmission of other important data. This reduces the availability of the entire system. Contents of the invention [0003] The purpose of the present invention is to provide a method for efficiently comp...
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IPC IPC(8): H04L29/06H04L1/00
CPCH04L1/0057H04L63/0428
Inventor 刘晓峰胡恩华魏盛昕周星宇连爱娥余亮星
Owner CHINA RAILWAYS CORPORATION