Equipment fault storage system and method of railway vehicle train control and management system

Abstract

The invention relates to an equipment fault storage system and method of a railway vehicle train control and management system. Comprising a fault detection module used for updating a fault context to a fault processing module in real time; the fault processing module is used for circularly storing context information in a fixed time period by using a context recording queue; the fault storage module is used for maintaining a circular queue to circularly store fault records needing to be written into a storage medium; and when the counting semaphore is received, the fault records in the circular queue are dequeued and written into the storage medium. According to the invention, the NVSRAM is used as a fault storage buffer queue, so that the problem of power failure data loss is solved; a power failure interrupt processing function is added, so that the problem of data damage can be solved; according to the method, a circular queue mechanism is adopted to manage the fault data block files, so that the problem that the same file number can store more fault pieces and is convenient for circular storage is solved.

Description

technical field [0001] The invention relates to an equipment fault storage system and method, belonging to the technical field of rail transit, in particular to an equipment fault storage system and method of a rail vehicle train control and management system. Background technique [0002] The train control and management system TCMS is the brain of rail transit vehicles (including high-speed rail, subway, light rail, etc.), and is responsible for directing the operation of the entire vehicle. If a fault occurs, it will affect the normal operation of the train. Therefore, when the TCMS fails, it can quickly locate the fault. , To prevent the further spread of faults, fault storage plays a vital role in vehicle fault diagnosis and maintenance. When the TCMS detects a fault, the TCMS needs to store the fault code, the time when the fault occurs, and the context content before and after the fault occurs. After waiting for the vehicle to be put into storage, download the stored...

AI Technical Summary

Problems solved by technology

This method has the following problems: (1) The solution stored in the cloud through the wireless device will cause data loss when the wireless device is interrupted, and the solution will fail when there is no wireless signal; (2) directly store or store the faults that occur Cache through memory instead of non-volatile memory (NVSRAM). When the device suddenly loses power, it cannot save the faults that have occurred but not yet stored, resulting in data loss; (3) due to the lack of power-down protection function, the device suddenly When the power is cut off, the file system may be damaged, and the data in the file system buffer will be lost, causing the stored fault data to be incomplete, and the host computer will have a data parsing error; (4) the context before and after the fault cannot be stored, only Can store the context at the time of failure

This method has the following disadvantages: (1) When faults occur frequently, storing a large number of files is not conducive to fault download and file management; (2) The number of files can be limited, but when faults occur frequently, historical fault storage records are relatively large (3) The total storage capacity occupied by fault record files cannot be set

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