TH3707B - Color classification device for granular objects - Google Patents

Abstract

This invention relates to color recognition devices for granular objects, in particular to color recognition devices, in which the luminance rate of the background plate is automatically controlled to an appropriate level during operation.

Claims (4)

1. Color classification device for granular objects It consists of a number of color classification units. Each unit consists of Section for feeding pellets into the path for classification. Collection to collect selected objects. Export section for sending unqualified objects A blower for blowing unselected objects into The said export. Detectors, which are on opposite sides in the path for Classify them by each section, including the shining part to shine. Go to that path for classification The background light source for Used as a benchmark for illumination rates And the exposure Which acts to receive light coming from objects within the path for Identify and from that background light source and the tongue actuation which is attached to the blower and working. It responds to the exposure for producing a rejection signal When there is a non-standard object within the classification path, the color recognition device includes: Section for continuous adjustment which is connected between the exposure. With the background light source to generate a correction signal which will display To the amount and direction of correction in the amount of light from The background light source. Depending on the amplitude and The polarity of the output of the receiving element Compared to Pre-defined level And to adjust the light estimation from the part The backlight generator automatically follows the corrective signal so that it does not cause a difference in the The amount of light received by the light receiving element in its absence. Which objects are in the path for classification? And the amount of light The brightness obtained by the exposure in the event that only the Standard, although the intensity of the chromaticity in the object is standardized Will change during operation and the scanner circuit is attached to the adjustment section. To cause a change in position on the side of the classification unit A certain amount of color in the manner in which the adjustment section has been provided It is for all color classification units and is connected to the light receiver. Such as each part and the background light. Of the corresponding color recognition unit for a predetermined time sufficient to correct the amount of light from the background light source Each crate fully 2. Color classification device for granular objects as in Claim 1, where the adjustment section contains an advantage. Parallel Through the amplifier and half switching circuit The first and second waves to the corresponding optics And each has a corresponding comparator, and the comparator output is attached to the control. So that there is an automatic adjustment of the brightness of the section Background light source 3. Color classification device for granular objects as shown in Claim 2, where the control contains an analog-di switch. Mental with a moving driver 4. The color classification device for the granular material is described in Claim 2, where the control consists of a servo engine. With an electric level meter (4 claims, 2 pages, 6 photos)