Railway signal data flow storage management system

Abstract

The invention discloses a railway signal data flow storage management system. The system can be used to maintain an original text Log function and comprehensively record a data flow of a railway signal system and especially a TDCS / CTC system. When the system is used to record data, through using cache storage and compression storage modes, a data size is greatly reduced and then usage of a systemhard disk resource and a network resource is greatly decreased. Automatic dynamic switching can be performed so that data storage under two modes of local storage and remote storage is realized. Simultaneously, incremental sequence numbers are arranged for each packet of the data, only sequence number management of data storage is realized and abnormal missing during data recording is prevented. Besides, rapid positioning can be performed when the system is used to analyze an on-site fault, and according to historical data of a production environment, a basis is provided for automation testing.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a storage and management system for railway signal data streams. Background technique [0002] At present, in the software system, the log function (Log) is generally used to record the internal state of the software operation, the software record log, etc., mainly including: software operation debugging information DEBUG, software data processing log INFO, software alarm information WARN, software Error message ERROR and other logs. In ordinary software engineering, the log storage function is mostly encapsulated with the sysLog standard log interface under Unix / Linux to realize the log recording and log classification of the above information. In the use of railway signaling systems, especially TDCS / CTC systems, it is found that the existing log storage management functions do not meet the actual on-site needs, mainly including: [0003] 1) In the railway signaling syste...

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Problems solved by technology

[0004] 2) When the log is stored, if there is a bad sector in the hard disk and fails to be written to the disk, when the subsequent fault analysis queries the log, it is impossible to know whether there is a log loss phenomenon, let alone how many logs are lost

[0005] 3) Each terminal of the railway signaling system may use a low-power version of the industrial computer, based on the hardware limitations of the site, it is impossible to record too many logs; the Windows system does not support the log server mode, although the Unix / Linux syslog method supports local storage and log server mode, but cannot be switched dynamically

When the communication between the station and the central network fails, it is expected to record part of the information in the local terminal of the station, without losing the log data at the time of the failure, for analysis of the cause of the failure; when the network communication is restored, the system can re-store the log Directly direct to the central log server, that is, to realize the dynamic switching of log data storage; however, it is currently impossible to realize

[0006] 4) At present, the existing log storage is too simple, and it can only be the log records in the manual output text format when the software is coded

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