Method for storing real-time data

Abstract

The invention discloses a method for storing real-time data, which comprises the following steps: the data of a storage sensor is collected by a collector in real time; the summary information of a main index is accessed, checked and compared; the latest indicator of the main index content is extracted; the latest storage indicator of the data is accessed; data content and a check code are stored; new index content and the check code are calculated; the main index content and the check code are stored; main index summary is updated and stored; backup index content and the check code are stored; backup index summary is stored; the backup index summary is accessed and then checked and compared; the latest indicator of the backup index is acquired; the latest storage indicator of the data content is accessed; and storage information is reestablished. Double indexes and multiple checks are adopted for protecting the data in a storage unit, thus guaranteeing the complete content of the data stored in the collector. Cycling coverage is adopted for realizing the continuous storage of data content under fixed storage capacity, improving the reliability and completeness of important parameter record during the industrial process and promoting the operation efficiency of process monitoring and work safety.

Description

technical field [0001] The present invention relates to the field of information processing technology in the field of information technology and automation, and relates to a method for storing real-time data used on an embedded collector, which is a software process executed on an embedded operating system and is suitable for harsh application environments Embedded collector real-time data storage. Background technique [0002] In the industrial production process, the change process of various parameters often reflects the operation status of the production equipment and the connection of the production process in a stage. Requirements, etc. are of great significance. Embedded collectors are widely used in the industrial field to measure and record many industrial parameters (such as temperature, pressure, flow, etc.), generate continuous historical data, and provide first-hand information for analysis and research for technicians and managers. However, due to the harsh ...

AI Technical Summary

Problems solved by technology

At present, the data storage on the computer uses a standard file management system, such as FAT, NTFS, etc., which all adopt a directory-based management method. In the actual physical address, the storage address of the file content is pointed to the storage address of the file content step by step through the pointer. Unified to many The data of each file is managed, so that once a certain directory pointer in the physical address is wrong, the content in the file cannot be read and interpreted, and it is risky to use it in an embedded collector.

Many current embedded collectors use a record-based storage method. Each record contains all the information of the data content and is stored continuously in the physical address to ensure that all data is unreadable due to some data corruption. However, this method requires each record to adopt a fixed storage format to contain all storage information, causing each record to occupy many bytes, which is not convenient for storing more records in a limited-capacity memory

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