An optimization system to avoid repeated refreshing of EMU display screen fault diagnosis

Abstract

The invention relates to an optimization system avoiding repeated refreshing during fault diagnosis of a display screen of an EMU. The display screen receives diagnosis alarm information from a CCU, during initial operation of a TCN node, the gateway number changes, the display screen corresponds variable names to ports again, under different grouping conditions, a traction unit bound to the samevariable name in the display screen may change, a display fault is ended via the re-binding process, and the fault can be detected again after binding success in the next program period. According tothe method, the gateway initialization variable is detected in each program period, the fault refreshing condition is reverted and fault interface refreshing in a fault refreshing process is paused the moment that gateway initialization is discovered, and the fault refreshing condition is not set in the present program period and the fault interface is not refreshed in the next fault refreshing period unless gateway initialization is completed. Thus, a display screen fault in the drivers' cab is not refreshed repeatedly during initial operation of the TCN node, the problem that a fault time record on the screen is distorted is solved, the storage space of historical faults is reduced, and faults can be inquired and located more accurately.

Description

technical field [0001] The invention belongs to the technical field of repeated refreshing of display screens, and in particular relates to an optimization system for avoiding repeated refreshing of fault diagnosis of display screens of EMUs. Background technique [0002] As a part of the Train Network Control System (TCMS), the Human-Machine Interface (HMI) in the driver's cab of the EMU is responsible for displaying the status of each subsystem of the vehicle, prompting for fault diagnosis, and issuing some control commands. Among them, the fault display function of TCMS after diagnosis and processing has always been the most intuitive interface to remind the driver to understand the fault status of the vehicle. TCMS obtains the status information and fault information of each subsystem through the multi-function vehicle bus (MVB) and hard-wire interface of each subsystem. The central processing unit (CCU) of TCMS will summarize the vehicle information for logical processi...

AI Technical Summary

Problems solved by technology

[0003] However, when the driver inserts or removes the master key, the current fault will be terminated and then reported again. The time of occurrence of the current fault will change. The time of the fault record is the time when the key is inserted and removed, not the actual occurrence of the fault. The fault record time is inaccurate; after the key is reinserted, the faults reported repeatedly will be added to the historical faults. Since the fault storage limit is 1000, repeated insertion and removal of the key may quickly make the historical faults The storage limit of 1000 entries is full, but in fact the same part of the failure is repeatedly refreshed

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