FIELD: measuring.
SUBSTANCE: invention can be used for detection of fractures and defects in rails. Sensors are used to measure the value of the magnetic field generated by the reverse traction current, which are fixed on the electric locomotive bogie directly above the rails, as well as a differential amplifier for subtracting signals from two sensors for measuring the value of the magnetic field and amplifying the difference signal, wherein recording device used is industrial computer with possibility of analogue-to-digital conversion, display and storage of measurement results for further processing in centre of diagnostics and monitoring, wherein differential amplifier and recording device are arranged in electric locomotive cabin.
EFFECT: provision of possibility to exclude use of magnetizing element.
1 cl, 1 dwg
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