A method of tracking yarn quality in an optical yarn quality scanner and optical scanner for performing the method.

摘要

The invention relates to a method for tracking the yarn quality in an optical yarn quality scanner by means of an optical line sensor having one or two rows of the individual optical elements of a rectangular shape, which provide at its output an analog signal which is proportional to the degree of their irradiation. The analog signals from all individual optical elements illuminated by a radiation source and not shaded by the yarn are scanned in all the modes of optical quality scanner operation for each individual optical element and stored in electronic memory as output values, operating values or operating values ( Fc1, Fc2, Fc3) of the individual optical elements, which are subsequently compared with the aim of assessing the correct function of the sensor and eliminating the production and operating defects and production and operational disturbances. The invention also relates to an optical scanner for carrying out the above-mentioned method, in which the electronic memories (1) and their associated circuits for eliminating the production tolerances and malfunctions and defects and circuits for calculating the widths of the partial shadows for individual optical elements of Sensors of the optical scanner are formed on a common semiconductor substrate, which is arranged in the optical scanner.