A Fault Diagnosis Method Based on Code Point Mapping Model

Abstract

The invention relates to a fault diagnosis method based on a code bit mapping model. The fault diagnosis method comprises the following steps: defining a code bit mapping model between an information subsystem and a diagnosis maintenance system; configuring all fault information and storing all the fault information into a code bit mapping table of a mapping table storage module by the information subsystem; loading and initializing the code bit mapping table, starting a monitoring task thread and receiving the fault information sent by the information subsystem by a code bit analysis and display module; judging whether the fault information sent by the information subsystem is received, and if so, entering a next step, otherwise, keeping a monitoring state; analyzing the received fault information, and through recognition and comparison of the code bit mapping table, obtaining describing and warning information and maintenance information corresponding to the fault information; and displaying the analyzed describing and warning information and the analyzed maintenance information on an interface. Compared with the prior art, the fault diagnosis method has the advantages of simple message structure, information comprehensiveness, high configurability and the like.

Description

technical field [0001] The invention relates to a rail transit fault diagnosis method, in particular to a fault diagnosis method based on a code bit mapping model. Background technique [0002] In various rail transit signal systems, diagnostic maintenance is one of the necessary functions. This function can actively or passively interact with other functional modules or other subsystems to realize the operation status, fault and Alarm monitoring. [0003] According to the type of information, the signal system maintenance data is mainly divided into three categories: alarm quantity, state quantity and analog quantity. The current maintenance information communication interface protocol mainly has the following definition methods: First, different types of data are grouped and sent separately , there are many data packets, and the sending and receiving parties consume a lot of resources; the second method is to send the maintenance information in plaintext packets. This met...

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Problems solved by technology

[0003] According to the type of information, the signal system maintenance data is mainly divided into three categories: alarm quantity, state quantity and analog quantity. The current maintenance information communication interface protocol mainly has the following definition methods: First, different types of data are grouped and sent separately , there are many data packets, and the sending and receiving parties consume a lot of resources; the second method is to send the maintenance information in plaintext packets. This method has a large amount of information and is easier to parse, but because the data packets are generally large, the transmission occupies more bandwidth. ; The third is to define the maintenance information through the fault code, the message is simple, but not comprehensive

Moreover, the definition of maintenance data is relatively fixed in terms of data structure, and the configurability is poor. If the maintenance data increases or decreases, it will bring about large changes.

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