公开(公告)号：US20050068535A1

公开(公告)日：2005-03-31

申请号：US10496744

申请日：2002-11-27

申请人： Leonard Bond ,  Aaron Diaz ,  Richard Pappas ,  Timothy Stewart ,  Albert Mendoza

发明人： Leonard Bond ,  Aaron Diaz ,  Richard Pappas ,  Timothy Stewart ,  Albert Mendoza

IPC分类号： G01N21/35 ,  G01N21/59 ,  G01N21/88 ,  G01N21/89 ,  G01N29/02 ,  G01N29/04 ,  G01N29/11 ,  G01N33/02 ,  G01N33/12 ,  G06M7/00 ,  G01N21/00

CPC分类号： G01N33/12 ,  G01N21/59 ,  G01N21/85 ,  G01N21/8806 ,  G01N21/8901 ,  G01N29/048 ,  G01N29/11 ,  G01N2201/0626 ,  G01N2291/015 ,  G01N2291/02475 ,  G01N2291/02836 ,  G01N2291/044 ,  G01N2291/048 ,  G01N2291/103 ,  G01N2291/105

摘要： Systems and techniques for detecting the presence of foreign material in food utilizing optical backlighting and/or ultrasonic inspection are presented. In optical backlighting, a substantially monochromatic light source optically backlights a food stream with source light having a wavelength between about 500 and 600 nm. An image of the food stream is captured and the presence of foreign material is determined when a portion of the detected image exceeds a predetermined threshold. The technique is especially suitable for the detection of bone in chicken meat, and the light source can be a planar array of green LEDs. In ultrasonic inspection, a process stream is interrogated with pulses of ultrasound and the presence of foreign material is determined based on the detected off-angle ultrasound scattering response.

摘要翻译： 提出了利用光背光和/或超声波检测来检测食品中外来物质的存在的系统和技术。 在光学背光中，基本单色的光源利用波长在约500和600nm之间的源光光学背光食物流。 捕获食物流的图像，并且当检测到的图像的一部分超过预定阈值时确定异物的存在。 该技术特别适用于鸡肉中骨骼的检测，光源可以是绿色LED的平面阵列。 在超声检查中，使用超声脉冲询问处理流，并且基于检测到的偏角超声散射响应来确定外来物质的存在。