METHOD FOR MONITORING THE LOCATION OF A METAL BASE INSIDE A POLYMER LAYER AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC G01B7/00 G01B11/00 G01D9/00 

FIELD: induction-optical devices.

SUBSTANCE: inventions group relates to an induction-optical device and method for monitoring and controlling the technological process of extrusion, which consists in applying a protective polymer layer on a metal base in the form of a rod, wire rod, twisted bundle, cable, pipe. The device for monitoring the location of the metal base inside the polymer layer contains a movable frame, in the center of which there is a hole for moving the working fluid with the metal base inside the polymer layer, an inductor for inducing current in the metal base, electromagnetic and optical sensors, infrared lasers. Also, an automated control system is introduced into the device, connected to a movable frame, which is configured to move along a trajectory with three degrees of freedom and contains a movable column connected to a movable unit, which includes two rigidly connected plates with coaxially aligned holes, which are the working gap of the device. Electromagnetic sensors are installed between the plates of the moving unit, infrared lasers and optical sensors are installed on each of the plates, while the outputs of the optical sensors are connected to the microcontroller, and the outputs of the electromagnetic sensors of the same name are connected to the microcontroller. The method for contactless control of the location of the metal base inside the polymer layer is based on the cyclic vibrational movement of the movable frame in which the electromagnetic and optical sensors are installed, the voltage at the output of the electromagnetic sensors is measured, when the coordinates of the intersection points are found using optical sensors, the location of the working fluid is determined, the coordinates of the working fluid are compared with the coordinates of the metal base, established during calibration, and determine the amount of displacement of the metal base from the geometric center of the working fluid. In this case, the oscillatory cyclic movement of the movable frame relative to the working medium passing through it is carried out along a trajectory with three degrees of freedom, the intersection points of the stress dependences on the coordinates of the measuring axes between each pair of electromagnetic sensors are determined, the location of the working medium in the working gap of the movable frame is bodies move the movable frame in such a way that the distance between the centers of the working medium and the working gap does not exceed the set value.

EFFECT: increasing the accuracy of monitoring the location of the metal base inside the polymer layer by reducing the influence of deviations of the working fluid with the metal base from the center of the working gap of the device and more accurate fixation of the center of the metal base by sensors.

15 cl, 9 dwg