Signal Processing Seminar

Reconstruction of a Novel Wheel-Rail Contact Signal for the Wheel Defect Detection

Alireza Alemi

Wheel Impact Load Detectors measure the rail response to monitor the railway wheel condition. Due to the wheel dimension, the mounted sensor on the rail makes a partial observation of the wheel. Therefore, using multiple sensors is common to cover the wheel circumference. To combine the partial information collected by multiple sensors, a fusion method is required. Normally, the features of the measured data are extracted and then the feature-level fusion is applied. This research proposes a fusion method at the data-level to reconstruct a new wheel-rail contact signal. This method transfers the data from the time domain to the space domain using the space relation of the sensor intervals, and the wheel circumference. The signal reconstructed is used for the wheel defect detection.

Overview of Signal Processing Seminar