Device to analyze and determine the movement characteristics of products, in particular in a casting line, and relative method

A device to analyze and determine the movement characteristics of products moving in a determinate direction of feed (F) and emitting radiations, in particular products exiting from a casting line, comprising a camera able to continuously acquire images of the product moving in the direction of feed (F) in at least two successive instants of time, and an electronic processing unit, suitable to effect the comparison between at least two successive images acquired, using mathematical algorithms based on the image correlation principle, in order to determine the spatial displacement of the images and, by means of said spatial displacement, to analyze and determine the movement characteristics of the product moving in the direction of feed (F), or the direction transverse to the direction of feed, obtaining a signal correlated to the speed of the moving product, wherein said processing unit is configured to analyze said speed signal in the frequencies domain, both in the direction of feed (F) and also in the direction transverse to the direction of feed, so as to identify:

• the presence of a frequency component corresponding to the frequency of oscillation of the ingot mold of the casting line and, assessing the amplitude of said frequency component identified, to identify in this way the presence of possible anomalies, in particular due to an erroneous setting of the casting speed, erroneous conicity of the crystallizer and/or poor effectiveness of the lubrication, or anomalies in the movement dynamics of the cast product, and/or
• the presence of a frequency component correlated to friction and/or anomalies in the mechanical system, that guides and conveys the cast product.