Research About Non-Destructive Detection Technology Of Food Impurity Based On X-ray

The food security problems which occurred more and more in recent years seriously influenced people's normal life. Government and some castes increased their supervision ability gradually about the food security problems and some related law and rule were established. Food impurity is one of the food security problems. Manufacture enterprises cry for a quickly and non-destructive detective equipment to check their packaged food. But at present the equipment is depended on import. This paper researched the market background and united the requirement of an important big project of Shanghai agriculture government, which is the research of X-ray food impurity detective equipment. In this paper, the author researched the key technologies and developed X-ray non-destructive detective equipment, which has an independence knowledge property right.The paper researched the X-ray detection technology in domestic and overseas and confirmed a feasibility plan which uses the computer software as the kernel processing module of the image processing and discriminating system. The food detection system includes high voltage X-ray generator and X-ray sensor. So the author chooses the voltage changeable T140 X-ray generator made by BMEI Co., Ltd. and X-Scan 0.4f2-410 made by DT Co. in Finland. The touching LCD was used as display equipment and controlling terminal of the system. And the system mechanical structure was designed in the paper. For the arithmetic of checking the food boundary, the author researched and compared double-apices method, p parameter method and automotive getting threshold method of most square difference. For the judgment and identify of the food impurity, the author used line data pretreatment and research the judgment...