Study Of The Dynamic Examinationg And Fault Diagnosis System For Locomotive Electronic Control Cabinet

This article mainly revolved the SS4G electric locomotive electron control cabinet dynamic examination and the fault diagnosis system's research carries on, elaborated the electronic cabinet dynamic examination and the fault diagnosis basic strokes route and the rationale; Using present age computer observation technology and the high performance data acquisition technology, has formed one initially based on the virtual instrument's portable locomotive electron cabinet dynamic examination and the diagnosis system.After studying and researching the locomotive electron control cabinet's composition and the principle of work thoroughly, has analyzed the electronic control cabinet's common fault phenomenon as well as the fault reason, and determined the system needs to gather status signal and failure diagnosis flow; Take the network tearing fault diagnosis as the theory basis, according to assigns the instruction from the driver to the reflection on each electrical machinery's voltage and current work flow, to the majority links which passes through have carried on the function unit division, has established the electronic control cabinet fault diagnosis search path.What the system uses is virtual instrument's structural types, by data acquisition card, industrial control computer and signal recuperation electric circuit constitution hardware system; The system software developing platform is American NI Corporation's LabWindows/CVI, the application software completes during the examination and the diagnosis process data acquisition, processing, the memory and the demonstration, particularly realizes key high frequency impulse profile signal dynamic gathering and the demonstration. Considered systems operating in electric locomotive under strong electricity field and intensity magnetic field environment, on system's reliability, in hardware's design and in software's design has taken the essential measure.The article ending the achievement which obtained to the system in has carried on the summary, has given an author's suggestion and has carried on the forecast to this system.