DEVICE FOR CONTROLLING THE MICROWIRE INSULATION THICKNESS Russian patent published in 2018 - IPC G01B7/06 

FIELD: measuring equipment.

SUBSTANCE: invention relates to information and measurement technology and automation, in particular to devices for monitoring the insulation thickness of wires. New is that a device for monitoring the thickness of the insulation of a microwire containing a capacitive sensor with holes for passing a microwire through them during the measurement, and a measuring unit connected to the sensor, and the capacitive sensor electrode is made in the form of a hollow cylinder with cylindrical grooves at its ends, where sealing glands are inserted pressed by fastening parts to the ends of the cylinder by means of flanges in their central part a through hole is made, water or electrolyte is flooded into the internal cavity of the cylinder, a two-frequency generator, a measuring amplifier, a synchronous detector, an analog-to-digital converter, binary code converter into a binary-decimal serial-parallel code, a conjugation unit, a computing unit and a control unit, with a capacitive-cell electrode connected to the first output of the generator, and the monitored wire serving as the second cell electrode is connected to the input of the measuring amplifier, the second output of the generator is connected to the control input of the synchronous detector, measuring amplifier is connected to the input of a synchronous detector which output is connected to an analog-to-digital converter, output of the analog-to-digital converter is connected to the binary code converter into a binary-decimal serial-parallel code, the output of the converter is connected to the interface unit whose output is connected to the input of the control unit, informational output of the interface unit is connected to the input of the computing unit, the outputs of the control unit are connected to the input of the generator and the second input of the analog-to-digital converter, respectively. Error in measuring the thickness of the wire insulation with a prototype device depends on the degree of curing of the insulation and can reach 100 % and more. In addition, the prototype device has low information content, since it does not allow to determine the degree of curing of insulation, whereas the claimed device allows it to be done. In addition, the working environment of the capacitive sensor in the claimed device is water or electrolyte, that is safe for the personnel, whereas in the prototype device the working medium is extremely dangerous for humans – mercury.

EFFECT: technical result in the implementation of the claimed solution is to increase the information contents and accuracy of control.

1 cl, 4 dwg