CAJ | 학술논문

相机分拣机常用于食品和非食品分拣，如炸薯条、虾、蔬菜、小吃、棉花、塑料等。但有些看不见的异物(如玻璃)或与产品颜色相同的异物是无法由相机检测到的。而激光扫描系统则可用于检测与产品颜色相同的异物。设计和改进了基于选择性吸收原理的激光分选系统，并对系统进行了高速信号采样实验以及成像实验。在信号采样实验中，系统可以通过选择性吸收分选技术有效识别产品和异物。在成像实验中，选择报纸的标题作为成像样图，调整扫描光斑直径接近0.35 mm，扫描后的数据经由计算机程序转码并成像。实验成像的分辨率为180×43 pixel。成像结果表明，系统可以有效地识别1.5 mm的异物。最后对光学扫描系统进行了分析，发现部分的光信号损失于扫描光的非垂直入射，于是提出了曲线扫描分拣结构用以改进传统分拣系统。
상궤분간궤상용우식품화비식품분간，여작서조、하、소채、소흘、면화、소료등。단유사간불견적이물(여파리)혹여산품안색상동적이물시무법유상궤검측도적。이격광소묘계통칙가용우검측여산품안색상동적이물。설계화개진료기우선택성흡수원리적격광분선계통，병대계통진행료고속신호채양실험이급성상실험。재신호채양실험중，계통가이통과선택성흡수분선기술유효식별산품화이물。재성상실험중，선택보지적표제작위성상양도，조정소묘광반직경접근0.35 mm，소묘후적수거경유계산궤정서전마병성상。실험성상적분변솔위180×43 pixel。성상결과표명，계통가이유효지식별1.5 mm적이물。최후대광학소묘계통진행료분석，발현부분적광신호손실우소묘광적비수직입사，우시제출료곡선소묘분간결구용이개진전통분간계통。
Camera sorters are used both for food and non-food applications like french fries, shrimps, vegetables, snacks, raw cotton, plastics, etc. But invisible foreign bodies, such as glass, or defects with exactly the same color as the product may not be detected. So the laser scanning system is used for detecting defects when the products and the defects have the same color. A laser sorting system is designed and improved based on the selective absorption principle. And a high-speed signal sampling experiment and a imaging experiment for the system were tested. By the selective absorption sorting technology, both products and foreign bodies were identified efficiently in the signal sampling experiment. The headline in the newspaper was selected as the imaging experimental sample and the diameter of scanning spot was adjusted close to 0.35 mm. The scanning data recorded through computer program was imaged by software. The resolution of the experimental result is 180*43 pixel. Imaging results illustrate that defects (1.5 mm) can be recognized accurately. Finally, after optical scanning system was analyzed, the phenomenon was found that most of the flux was lost due to the non-perpendicular illumination of the sample. A curve scanning sorting structure was proposed for improving traditional sorting system.