APPARATUS TO DETECT FABRIC SEAM Russian patent published in 1996 - IPC

FIELD: textile industry, detection of fabric seams in finishing production. SUBSTANCE: apparatus for detection of fabric seams has measuring electrode 1, that is member of processing machine, and two measuring electrodes 2 and 3 located on line perpendicular to fabric motion direction. Space between electrodes 2 and 3 depends on necessity to decrease probability of false actions of apparatus. Each of electrodes 2 and 3 is separated from electrode 1 by operation clearances 4, that form two closed contours, that causes formation of two measuring capacities CxCx₁ and CxCx₂ of sensitive member of apparatus. Apparatus also has converter, that has two automatic generators DD1 and DD2 with connection of measuring capacities CxCx₁ and CxCx₂ to their inputs correspondingly, and information processing circuit, that has counters of measuring canals DD2.1 ,DD2.2, divider by two DD3.1, AND/NO gates DD4.1, DD4.2, DD4.3, DD4.4, DD10, divider DD5, Synchronous pulses generator has members DD6.1 - DD6.3, NO gate DD6.4 - 6.6. Apparatus also has comparators DD7, DD8, single vibrators DD9.1 AND DD9.2, AND /NOgates - DD10.1, DD10.2, OR / NO GATES - DD11.1, DD11.2, DD11.3, DD11.4, counter DD12 task canal, memory register DD13. EFFECT: increased productivity. 3 dwg