Examination of the signal recorded by micro sensor system for detecting damages on rail vehicle undercarriage

The paper presents a model solution for implementing electronic monitoring systems to control the technical condition of vehicles by proper interpretation of the electrical signal experimentally acquired by an accelerometer. Despite the variety of influencing factors, an approach using Wavelet-decomposition of the signal is given to substitute the classical decomposition in Fourier series. The aim is to get more adequate visualization of the ongoing process of moving vehicles-track interaction. MATLAB is used for numerical processing and presentation of results.