Study and development of a means of colorimetric control of the properties of materials and products

The solution to the scientific and practical problem of developing and studying the operation of an electronic digital colorimeter is considered. The study was not only to determine the percentage composition of the base colour in the controlled object for further unambiguous identification of it with another control object, which is studied using an electronic digital colorimeter, but also to check its metrological reliability. The functional scheme of the developed digital colorimetric sensor for measuring the colour properties of materials and products is presented, the principle of operation of which is also provided. Experimental data were obtained for three measurement channels of the digital colorimetric sensor, namely: the channel of red, green, and blue photodiodes. A statistical analysis of the series of observation results was carried out, which allowed establishing the levels of unbiased estimates of dispersions for three measurement channels. The change in the percentage of the base colour of the sample across the measurement channels is associated with a change in the characteristics of the surface being controlled (the presence of damage, contamination, etc.). Graphic images of the determination of the level of blue colour across control areas in three samples are obtained. Calculations of the uncertainty budget for three measurement channels of an electronic digital colorimeter are presented. The results obtained allow further improvement of methods and means of control of the metrological reliability of means of colorimetric control by using statistical methods of analysis of the measurement results obtained using them. The use of a fuzzy logic apparatus for identifying objects of colorimetric control among themselves is promising.