X-ray foreign matter detection method and system

Abstract

The invention relates to the technical field of foreign matter detection and provides an X-ray foreign matter detection method and system, and the method comprises the steps: enabling a test piece image to be inserted into an X-ray image to form a superposed image, detecting and positioning a foreign matter image and / or a test piece image in the superposed image, and removing a to-be-detected product and / or a foreign matter in a to-be-detected object; comparing the superimposed image with the test piece image, and analyzing whether the foreign matter detection sensitivity of the test piece isgreater than a foreign matter detection sensitivity threshold; and when the foreign matter detection sensitivity of the test piece is greater than the foreign matter detection sensitivity threshold, stopping the action of conveying the to-be-detected object and stopping the action of removing the foreign matter. According to the invention, the problem that the production personnel forget to put the test piece and the fault equipment misses the product containing foreign matters is avoided, and the problem that the test piece pollutes the production line and the product is avoided; there is noneed to buy a large number of test pieces, thereby reducing the processing cost.

Description

technical field [0001] The invention relates to the technical field of foreign matter detection, in particular to an X-ray foreign matter detection method and system thereof. Background technique [0002] At present, X-ray technology is widely used in the field of online inspection of industrial production lines. Through X-ray transmission images, the internal structure and state of products can be clearly seen, and possible foreign objects or defects in products can be found. Taking the food production line as an example, when there is metal, ceramic flakes, glass flakes or stones mixed in the bagged or bulk food, it will be imaged by X-ray scanning, and then the image will be recognized by the image processing program. Products with foreign matter are automatically removed. [0003] In order to better measure the sensitivity of the detection equipment, the detection equipment is verified with test pieces containing various sizes and types of foreign objects. like Figure...

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Problems solved by technology

[0005] There are hidden dangers in this method of inputting from time to time by the production personnel. If the production personnel forget to put in the test piece, there may be a fault in the equipment and the product containing foreign matter is missed; the test piece may contaminate the production line and the product, such as the product is unpackaged food , if the input test piece contains bacteria or foreign matter, it will contaminate the unpackaged product; the test piece increases the cost, because the sensitivity of the X-ray detection equipment is high, the foreign matter test piece is generally very fine, and the processing cost and sales price are low. Correspondingly high

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