FIELD: measuring equipment.
SUBSTANCE: invention relates to measurement equipment and can be used for real-time monitoring of technical condition of electroconductive elements of electric cable or wire. Essence: a longitudinally moving controlled cable is exposed in a plane perpendicular to its movement, directed by a physical field in the form of an alternating electric field, which in the electroconductive elements of the cable excites a wave physical process in the form of polarization of spin magnetic moments of free electrons. This process is registered by an inductive sensor and a control signal is generated in the form of induction EMF, which is subjected to treatment and ranking of the defect is performed by comparing the obtained measurement result with corresponding results, stored in a statistical database based on measurement results in samples of a cable with artificial defects. To detect defects of break type or loss of cross-section, the difference between the numerical value of the amplitude of the control signal and the corresponding numerical value from the statistical database is used as a comparison result. To detect defects of continuity type or deviation from the specified chemical composition, the comparison result is the difference between the numerical value of the phase of the control signal and the corresponding numerical value from the statistical database. Variable electric field is created at resonance frequency of polarization of spin magnetic moments of free electrons of structures of electrically conductive cable elements. Control signal is recorded at the frequency of the alternating electric field. Variable electric field is excited by means of through two-electrode cylindrical capacitor with concentrated capacitance. Inductive sensor used is a through inductance coil located at a distance from the scattering field of the excitation field source.
EFFECT: high accuracy and sensitivity of monitoring, as well as wider field of use.
4 cl, 2 dwg
