FIELD: electricity.
SUBSTANCE: invention relates to electric engineering and it can be used in wire production sector for monitoring and repair of enamel insulation for wires. The method lies in wire drawing through point damages sensor and velocity sensor. Cycling electromotive force (EMF) is induced in the monitored wire by means of inducer. Before monitoring calibration of measurements is made; for this purpose a section of wire of fixed length lf is drawn through the velocity sensor and number of cycles n of induced EMF are counted for the period of this section passing through the velocity sensor. According to measurement results prime length of the wire
is determined and its value is accepted as length unit. Then systematic inaccuracy is measured, which is introduced into length measurement of damaged section of wire insulation by finite size of point damage sensor. For this purpose two faults are made at enamel insulation of the wire with length l1 and l2 at distance exceeding length of point damage sensor with surface of the monitored wire. Section of wire with faults is drawn through point damage sensor. When each damaged section passes through the sensor number n1 and n2 of cycles for induces EMF is counted. With these measurement results systematic inaccuracy is determined. Then fault control for enamel insulation is made with shaped defect pulse. Number of defect pulses is counted and number of induced EMF cycles is counted for the time period of each defect pulse. The actual length of each fault and total length of all defects is calculated. Number of induced EMF cycles is registered for the monitoring period and length of the monitored wire is calculated. Quality of wire insulation is accessed against number of defects per length unit, typical wage length of defects per length unit of the wire.
EFFECT: improving accuracy, data rate and reliability, simplification of production.
3 dwg
