The EMU Fault Expert Diagnostic System is mainly used to assist the fault diagnostic personnel to trouble-shooting and positioning the fault range and to find the fault point ultimately according to the site fault phenomena. The Expert Diagnostic System mainly adopts the computer to calculate and analyze the past fault reason and the electric logic analysis technology method to find out the fault reason in a shorter time for reducing the safety influence and cost loss by the fault and improving the reliability of the EMU operation to reduce the maintenance cost.
Improve the diagnostic efficiency of the fault diagnostic engineer;
The system could help the fault diagnostic engineer to narrow down the fault inspection range and arrange the trouble-shooting priority to first check the frequent fault phenomena for finding the fault in the shortest time while using the rational trouble-shooting method.
Diversified diagnostic methods for mutual corroboration;
If the diagnostic system carries out the trouble-shooting relying on a sole method, it is difficult to achieve the comprehensive and accurate effect. Through diversified analysis combination of the comprehensive statistical analysis of the past fault information, the electric circuit schematic diagram analysis and the fault tree logic analysis, it is possible for realizing the comprehensive and accurate of the reasoning.
Collects and stores the fault information and summaries the experience for consulting and study;
There are plenty of fault cases in the system fault library. The diagnostic personnel could consult and summary the fault, through fault cases arrangement and classification, for improving the personnel diagnostic capability.
The system constructs the 3D simulation locomotive modeling for the fault simulation and set fault point to simulate the EMU corresponding triggered fault and equipment status for analyzing the negative effect of the fault.
Typical Fault Case Library: the typical cases collect plenty of past fault information; the past fault information includes the following content: train type, train number, fault name, handling overview, reason analysis, handling point and so on. The fault handling experience is summarized for consulting and study.
Electric Circuit Schematic Diagram: using CAD in dealing with the electric circuit schematic diagram to realize the related electric circuit component status change (power off is white, power on is red) in the electric circuit diagram. The electric circuit schematic diagram is switched to the PLC electric circuit schematic diagram to simulate the electric circuit fault for deducing the negative influence of the fault.
Fault Tree: the fault tree builds the logic relation among the faults, once one of the fault is triggered, the related faults which are triggered by the fault would be marked in color for direct analyze and deduce the fault reason.
3D Locomotive Model: the system simulates the actual locomotive to build the 3D locomotive model for the locomotive simulation operation; once the simulated locomotive is fault, the fault phenomena could be directly observed.