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1. 发明授权

US5748324A Bichromatic method and apparatus for detecting peach pit fragments 失效
标题翻译：用于检测桃坑碎片的双色法和装置
公开(公告)号：US5748324A
公开(公告)日：1998-05-05
申请号：US502679
申请日：1995-07-14
申请人： M. Scott Howarth , Robin D. Tillett , Christine R. Bull
发明人： M. Scott Howarth , Robin D. Tillett , Christine R. Bull
IPC分类号： B07C5/342 , G01J3/36 , G01J3/51 , G01J3/46 , B07C5/00
CPC分类号： B07C5/3422 , G01J3/36 , G01J3/51 , Y10S209/92 , Y10S209/938
摘要： A method and apparatus are provided for detecting the presence of pit fragments as small as 2 mm.sup.2 in pitted peach halves. Pitted peach halves are agitated into a cup-up position, are conveyed to a position adjacent an inspection zone and are launched airborne into the inspection zone. Each peach half in the inspection zone is illuminated by a pair of quartz halogen lights and the diffusely reflected light is separated into first and second beams. The first and second beams are filtered to extract a first relatively wide wavelength band centered at 600 nm and a second relatively wide wavelength band centered at 750 nm. Preferably, each wavelength band is approximately 70 nm. Each of the wavelength bands enters a separate line scan camera for acquiring image signals from each wavelength band. The signals from both cameras are combined and enhanced to determine the presence or absence of fragments.
摘要翻译：提供了一种方法和装置，用于检测在一半的凹坑中存在小到2mm 2的坑碎片。捣碎的桃子一半被搅动到杯状位置，被输送到邻近检查区的位置，并被空运到检查区。检查区域中的每个桃子一半由一对石英卤素灯照亮，漫反射光分离成第一和第二光束。对第一和第二光束进行滤波以提取以600nm为中心的第一相对宽的波长带和以750nm为中心的第二相对宽的波长带。优选地，每个波长带约为70nm。每个波长带进入单独的行扫描相机，用于从每个波长带获取图像信号。来自两个照相机的信号被组合和增强以确定碎片的存在或不存在。

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