Abstract
Short-wave irregularity of top rail has great influence on status of both train operation and rail track. Based on the non-contact measurement principle and the virtual instrument development platform with powerful function, the paper designs the system for detecting short-wave irregularity of the top rail based on virtual instrument with the eddy current displacement sensor. The system can realize online real-time display, analysis, processing, storage and search of historical data and printing. With this method, we can detect the smoothness of rails and provide a better scientific basis for making a plan to guide the daily work of track maintenance.
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