METHOD OF DETERMINATION OF MAGNETIC MASS OF RAILCARS AND SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2015 - IPC G01R33/12 G01N27/72 B61K9/00 G01G19/04 

FIELD: measurement equipment.

SUBSTANCE: for determination of magnetic mass of railcars first the calibration with allowance for ambient temperature is performed, and the bulk density of cargo in railcars is determined. A sequence of delivery of railcars and their amount, initial time of delivery to the zone of measurements and leaving the zone of measurements. Then the changes of parameters of a coil current, instantaneous values of voltage and current in a coil, speed of movement of railcars, railcar height, load level, temperature are determined, and instant values of quality-factor and inductance of the coil are evaluated. Then using these results the integrated inductance and quality-factor of a railcar and magnetic mass of a railcar are determined. For implementation of the method the system is offered which comprises the devices for determination of quality-factor and inductance 1, devices for temperature measurement 2, ultrasonic level sensor for a railcar 4, photo-electric position sensors of a railcar 5, optical speed sensors 6, video camera 7, volumetric density sensors 8, and also the processing and control unit 9.

EFFECT: improvement of accuracy of determination of magnetic mass of railcars and other containers.

2 cl, 4 dwg