METHOD OF DETECTION OF METAL PARTICLES IN MOVING MATERIAL Russian patent published in 1998 - IPC

FIELD: mechanical engineering for light industry, detection of fragments of needles in unwoven base in process of manufacture of synthetic leather, felt and other materials. SUBSTANCE: in agreement with method material is moved through zone of operation of two detectors and zone of application of mark, moment of information reception from detectors is fixed in the form of pulse that is moved in step with movement of material and information from permanent storage and of first detector is read by control unit after specified distance. Coordinates of various variants of location of metal particles over width of canvas are recorded in advance in permanent storage and controlling information for application of mark is formed by control unit. EFFECT: decreased excessive or false information, enhanced authenticity of determination of coordinates of location of metal particles in material. 7 dwg