METHOD FOR MEASURING THE MOTION SPEED OF AN ELONGATED MATERIAL AND A DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC D01H13/32 G01P3/50 

FIELD: technological processes.

SUBSTANCE: invention relates to methods and devices for non-contact inspection of the motion speed of an elongated material having a natural local discontinuity in length, and can be used, for example, in textile production while controlling the winding parameters of various textile materials - yarns, fibers, etc. In the method for measuring the motion speed of the EM, which consists in that in two check positions,spaced apart from each other in the direction of motion of the EM at a distance L, information about local discontinuities of the EM is monitored, moments of time τ₁ and τ₂, in which it coincides, are fixed, and the motion speed of the EM is determined according to the formula V=L/(τ₁-τ₂), time information between local neighboring discontinuities with extreme values of a linear density is used as the information about local discontinuities. Device for measuring the motion speed of the elongated material, comprising two readout heads disposed at the first and second check positions at a base distance L relative to each other, digital comparator which output is connected to a first timer input, timer output is connected to an input of a computing unit, an control output of which is connected to a second timer input, each readout head contains one sensor of the linear density of the elongated material, output of a first readout head through a first extremal driver and a first driver of code sequence of time intervals is connected to a first input of the digital comparator, output of a second readout head through a second extreme driver and a second driver of code sequence of time intervals is connected to a second input of the digital comparator, and second and third outputs of the control computing unit are connected respectively to an input of a first and to an input of a second drivers of code sequence of time intervals.

EFFECT: increase in the accuracy of measuring the motion speed of the EM, as well as simplification of the technical implementation of the proposed method.

2 cl, 1 dwg