SU1416911A1 - Method of checking fabric parameters - Google Patents

Abstract

The invention relates to the textile industry. The purpose of the invention is the expansion of technological capabilities by assessing the deformation of the fabric by changing its structure. The moving fabric 20 at the inlet and outlet of the technological machine 19 is scanned by cameras 3 and 4. The number of intersections by electronic rays of cameras 3 and 4 of the warp and weft is counted by counters 7 and 8 pulses, respectively. When the code combinations of the length gauge 15 and the length gauge sensor 17 coincide, a square pulse appears at the output of the coincidence block, which controls the writing of the digital codes of the counters 7 and 8 pulses into blocks 9 and 10. Digital information from memory blocks 9 and 10 through digital-to-analog converters 11 and 12 is fed to the inputs of comparison element 13, and the differential voltage from the output of comparison element 13 to recorder 14 shows the amount of deformation of the moving tissue 20. 1 slug. (L

Description

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The invention relates to the textile industry.

The purpose of the invention is the expansion of technological capabilities by assessing the deformation of the tissue by changing its structure.

i The drawing shows the block diagram of the device;

The device contains light sources 1.2 and telecameras 3, A, the outputs of which through drivers 5 and 6 are connected to counting inputs of counters 8 and 7 pulses, outputs connected with information inputs of memory blocks 9 and 10. The outputs of memory blocks 9 and 10 are through; the corresponding, digital-to-analog converters: connectors 11 and 12 and comparison element 13 are connected to recorder 14. The output i measurer 15 of the fabric length (counter) 1c is connected to one input of the coincidence unit 16 whose other input is connected with the output of the sensor 17 of the fabric length, and the output connected to the control inputs of blocks 9 and 10 of the memory and through the delay unit 18 to the control inputs of the counters 7 and 8 pulses, and the meter 15 of the fabric length.

The drawing shows a technological machine 19 and a fabric 20.

The device works as follows.

The cameras 3 and 4 are installed in such a way that the line scanning lines are parallel to the line connecting the opposing tissue structure nodes. Video signals from camera outputs 3 and 4 are received respectively at the inputs of shapers 5 and 6 pulses, in which rectangular pulses are formed during the intersection of the electron beam of the warp or weft threads. The rectangular pulses from the outputs of the formers 5 and 6 are summed by counters 7 and 8 pulses. The digital codes from the outputs of the counters 7 and 8 pulses are recorded respectively in blocks 9 and 10 of the memory when short square pulses are received from the output of block 16 of the match. After that, the counters 7 and 8 are reset by pulses from the output of the coincidence block 16 that have passed through the delay block 18. The digital codes from the outputs of blocks 9 and 10 of the memory are converted into digital-to-analog converters 11 and 12 into analog form and are fed to the inputs of the comparison element 13.

If the fabric 20 was deformed during processing (stretched or shrunk), then at a constant speed of movement of the fabric at the inlet and outlet of the technological machine 19, the number of intersections of the electron beam of cameras 3 and 4 weft threads will be different, respectively, the output signal of the element 13 comparisons will be

differ from zero in one direction or another.

When the fabric 20 is moving, pulses appear at the output of the meter (counter) 15 of the fabric length, the number of which is proportional to the current value of the fabric length.

The code combination from the output of the counter 15 is fed to one input of the block 16 of coincidence. The other input of the coincidence unit 16 receives a digital code from the reference 17, the value of which corresponds to one of the boundary values of the fabric lengths, at which the deformation of the moving tissue is measured, for example, 10, 20, 50, 100 m.

At the moment of occurrence, at the inputs of block 16 of coincidence of identical code combinations, a short rectangular pulse is formed at its output to control the operation of blocks 9 and 10 of memory.

On the recorder 14, the strain value on the selected meter is obtained using the sensor 17 for the length of the fabric.

Claims (1)

Invention Formula A device for monitoring tissue parameters, containing a light source and a camera, coaxially installed in front of the technological machine, the output of which is connected to the pulse counter connected to the counting input of the pulse counter, the control input connected to the output of the delay unit, and the output connected to the memory unit The first input of the comparison element, the output of which is associated with the input of the hysterator ret, characterized in that, in order to expand the technological possibilities by evaluating the deformation, t By changing its structure, it is equipped with a meter and a fabric length adjuster, a coincidence unit and an additional light source connected in series by a camera and pulse shaper, a pulse counter and connected in series by a memory unit and a digital-analog converter, while the additional light source and camera are installed coaxially after the technological process, the outputs of the Meter and the fabric length adjuster are connected via the matching unit to the control inputs of the memory units and from the input a delay unit whose output is connected to the control inputs of the cloth length meter and the additional pulse counter, the counting input of the additional pulse generator connected to the output, and the output to the information input of the additional memory block, the output of the additional digital-analog converter connected to the second input element of comparison.