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VxWorks-operating-system-based file storage structure and storage method

A file storage and operating system technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of the entire system paralysis, achieve the effect of reducing hardware overhead, ensuring reliable operation, and reliable file storage

Active Publication Date: 2012-06-27
TIANJIN KEYVIA ELECTRIC CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

If a sudden power failure or reset occurs during a large amount of sudden data storage or file operations, the entire system will be paralyzed

Method used

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  • VxWorks-operating-system-based file storage structure and storage method
  • VxWorks-operating-system-based file storage structure and storage method

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Embodiment Construction

[0023] The present invention will be described in detail below with reference to the drawings and examples.

[0024] figure 1 It is a schematic diagram of the file storage structure based on the VxWorks operating system of the present invention; figure 2 It is an execution schematic diagram of the file storage method based on the VxWorks operating system of the present invention.

[0025] The present invention is based on the VxWorks operating system, and realizes the file system based on TrueFFS on two pieces of NORFLASH. By using SDRAM memory as a data cache, the contradiction between a large amount of burst storage data and slow storage peripherals is resolved. According to the characteristics of the real-time multi-tasking system, the task functions are divided. The high-priority task T1 completes the fast cache work of a large amount of burst data to SDRAM, fundamentally guarantees the fast recording of burst data, and notifies the low-priority tasks through messages. ...

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Abstract

The invention discloses a VxWorks-operating-system-based file storage structure and a VxWorks-operating-system-based file storage method. A true flash file system (TFFS) is implemented on two NORFLASHs, files to be stored are classified according to the importance degrees and read-write operation frequencies of the files to be stored, and important system files and data files are separately stored, so that physical influence between two file partitions is reduced, and the reliable running of the system is ensured. A high-priority task T1 quickly finishes caching massive burst data into a synchronous dynamic random access memory (SDRAM) to radically ensure the quick recording of the burst data, and informs a low-priority task T2 by a message. After receiving the message, the task T2 sequentially stores the data cached in the SDRAM into a specified TFFS2 file partition in a file form. The SDRAM caches the massive burst data, so that a conflict between the massive stored data and low-speed external equipment is solved, and the reliable storage of the data is ensured.

Description

technical field [0001] The invention relates to the technical field of electrified railways, specifically a VxWorks operating system-based file storage structure and storage system that can realize rapid storage of a large amount of sudden data and minimize the adverse effects caused by abnormal file systems. method. Background technique [0002] VxWorks operating system is an embedded real-time multi-tasking operating system designed and developed by American WindRiver Company, which is suitable for product development and application of real-time control systems such as aviation, aerospace, communication, and industrial control. In the electrified railway traction automation system and power system substation automation system, in order to realize complex monitoring and control functions, the support of the file system is needed to complete the fast file access operation on storage media such as NORFLASH, NANDFLASH, and DOM disk. The VxWorks operating system can realize t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 王传启曾庆钊李政贾翔宇宋金川
Owner TIANJIN KEYVIA ELECTRIC CO LTD
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