TH33917B - Color Separator for granular objects with optical detectors incorporating CCD linear detector. - Google Patents

Abstract

DC60 (16/12/45) Optical sensing device for use in color sorters. For granular objects, including CCD optical sensors (7), CCD optical sensors (7) consist of a number of optical sensors (7a) arranged in a single row. Each of which can detect red, green and blue wavelengths. The CCD linear sensing (7) receives light from grainy and background objects (12), which are illuminated by a red light source. (14) green light source (15) and blue light source (16) red, green and blue light sources are switched, while grainy objects moving within the optical sensing area (X). The CCD-type linear sensor receives light from the object Granular in sync with the above switching operations of light sources (14,15,16) Optical sensing devices for use in color splitters. For granular objects, including CCD optical sensors (7), CCD optical sensors (7) consist of a number of optical sensors (7a) arranged in a single row. Each of which can detect red, green and blue wavelengths. The CCD linear sensing (7) receives light from grainy and background objects (12), which are illuminated by a red light source. (14) green light source (15) and blue light source (16) red, green and blue light sources are switched, while grainy objects moving within the optical sensing area (X). The CCD-type linear sensor receives light from the object grained in a manner that matches the above switching operations of the light source (14,15,16).

Claims (4)

1. Color sorting machine for granular materials consisting of: a loading path for unloading granular materials to the optical detection area. The optical sensing path is positioned behind the falling locus of the granular material emitted from the Such unloading methods The optical sensing path includes CCD-type linear sensing, optical path and background path. such optical detection methods Serves to detect light from the background path. and each grain of such granular object that is emitted by such light path Such a CCD-type linear sensing unit includes a number of optical sensors arranged in one or more rows, each of which can detect red, green and blue wavelengths, and such light paths include source Red light source, green light source and blue light source. A control trajectory for determining whether grainy objects at such optical sensing areas are acceptable. or unacceptable objects based on the comparison between the detected optical signals received by the Recognizes such CCD type linears and preset threshold values. where such control paths will switch respectively to the red light source, green and such a blue color while the aforementioned granular object is moving within the optical detection area. and where such CCD-type linear sensors receive light from the object. such granularity in a manner consistent with the said switching of such light sources and the junction for removing unacceptable granular objects from the Locus agreed upon by respond to signals from such control pathways 2. Color sorter for granular objects according to claim 1, where the condition V=<_L/3T is satisfied, where T represents the one sweep speed of such CCD linear detector. V represents the falling velocity of the granular object, and L is the length of the optical detection region for such CCD-type linear detectors in the direction of the agreed locus. 3. Color sorter for granular objects according to claim 1, where each of the components A number of light exposures in such CCD-type linear sensors consist of silicon composites. 4. A color sorter for granular objects pursuant to Claim 1, where each of the aforementioned red, green and blue light sources shall consist of: Light-emitting diode (LED)