Data frame compression method and system based on DL/T698.45 protocol

Abstract

The invention provides a data frame compression method and system based on a DL / T698.45 protocol. According to the method and the system, acquired data frames are analyzed and layered; the data in each layer is compressed by adopting different compression algorithms according to types; wherein the basic data adopts a first compression algorithm; for different data type compression bytes, for firstarray data which cannot be compressed by array elements, a second compression algorithm is adopted, the data types of the array elements are extracted to serve as array element types, and for secondarray data which have the same array elements and can be compressed, only one group of array elements are reserved by defining the compression array types. The data frame compression method and systembased on the DL / T698.45 protocol are simple in compression algorithm and high in execution efficiency, not only have the characteristic of being compressed again through a universal compression algorithm, but also retain the characteristic that data frames are easy to analyze, and are an efficient lossless compression algorithm.

Description

technical field [0001] The present invention relates to the field of data compression, and more specifically, to a data frame compression method and system based on DL / T698.45 protocol. Background technique [0002] The full name of the DL / T698.45 protocol is "DL / T 698.45—2017 Electric Energy Information Collection and Management System Part 4-5: Communication Protocol-Object-Oriented Data Exchange Protocol", hereinafter referred to as "DL / T698.45 Protocol", is The electric energy information collection and management system in the electric power industry currently uses a communication protocol, which has been widely used. It can be used between the master station and the collection terminal, or between the collection terminal and the energy meter. Generally, carrier communication is used between the collection terminal and the energy meter. Due to the channel problem, the size of the communication message greatly affects the communication efficiency and communication succes...

AI Technical Summary

Problems solved by technology

[0003] The DL / T698.45 protocol adopts the data encoding method with self-analysis feature, which is easy to analyze manually or automatically by computer, which enhances the readability of the message, but the size of the message is increased due to the self-analysis flags such as data type in the data frame , for some communication channels where the size of the message affects the quality and efficiency of the communication, such as carrier communication, it is very important to reduce the size of the data frame of the transmitted message

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