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Embedded system file type real time history database algorithm

An embedded system, real-time history technology, applied in the field of historical database, can solve the problems of large file size, difficult long-term stable application of embedded applications, slow processing speed, etc., to achieve small file size, fast data positioning, data processing, etc. fast effect

Inactive Publication Date: 2017-01-18
天津九洲云物联科技有限公司
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AI Technical Summary

Problems solved by technology

Previous historical file algorithms often have slow processing speed and large file size, so it is difficult to apply them stably in the working environment of embedded applications for a long time

Method used

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  • Embedded system file type real time history database algorithm

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Embodiment Construction

[0014] The present invention provides a file-type real-time historical database algorithm used in an embedded system. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0015] The present invention relates to a file-type real-time historical database algorithm used in an embedded system, including a database structure definition and a database algorithm, wherein the database structure definition includes a data file format definition, a file information structure format definition, a data segment structure definition, sampling data structure definition,

[0016] The data file format is defined as follows: text information accounts for 20 bytes and n data segment...

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Abstract

The invention discloses an embedded system file type real time history database algorithm, and belongs to the history database field; the file type real time history database algorithm comprises a database composition definition and a database algorithm; the database composition definition comprises a data file format definition, a file information composition format definition, a data segment composition definition and a sampling data composition definition; reserved data after twice data screening needs to be written into the database; the data segment employs a fixed block size, thus ensuring certain data memory space, and realizing fast data location; the whole data segment can be loaded into the memory so as to fast process the data. Characteristics of an embedded monitor application are combined so as to improve a normal history file algorithm, thus realizing fast data processing and small file sizes. One month is taken as one unit for storage, thus preventing excessive fragmentation of the history files.

Description

technical field [0001] The invention relates to the field of historical databases, in particular to a file-type real-time historical database algorithm used in embedded systems. Background technique [0002] A file-type real-time historian is an integral part of embedded monitoring applications. The file history database is to record the change process of the collected data, which is used to analyze the change process of the data and archive it as data. [0003] Since it is mainly used in embedded systems, various resources in embedded systems are relatively limited, which requires the file size to be as small as possible. In addition, because it is applied to real-time monitoring, the data processing should be as fast as possible. Previous historical file algorithms often have slow processing speed and large file size, so it is difficult to apply them stably in the working environment of embedded applications for a long time. Since the historical database is a record of ...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/219
Inventor 陈宝钧
Owner 天津九洲云物联科技有限公司
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