Analysis of the working principle of the x-ray baggage scanner

The x-ray baggage scanner, also known as a security machine or baggage scanner, is an electronic device that is used to check luggage using a conveyor belt into an x-ray inspection channel, mainly in subways, airports, museums, government agencies, and other places that require security checks. Next, we will mainly talk about the analysis of the working principle of the food x-ray inspection machine. Here are some answers.

Here is the content list:

Why does the x-ray baggage scanner display show different colors?

Working principle of the x-ray baggage scanner

Why does the x-ray baggage scanner display show different colors?

The penetrating power of X-rays is related to the density, size, and composition of the material. If a substance is dense, it absorbs more X-rays and transmits less; if it is less dense, it absorbs less and transmits more. The thicker the object, the less likely it is to penetrate, and the higher the effective atomic number, the less likely it is to penetrate. X-rays do not penetrate the same way in different objects and therefore the color of the image varies. X-ray baggage scanner is based on the difference in the absorption characteristics of objects, and by detecting the effective atomic number of the object, it presents the x-ray baggage scanner based on the difference in the absorption of X-rays.

The x-ray baggage scanner images are therefore divided into three categories depending on the material of the object: orange, green and blue. Orange represents light elements with an effective atomic number of less than 10 and their organic components, such as foodstuffs, water, etc. Green generally represents medium mass elements with an effective atomic number of 10 to 18, such as sodium, potassium, sulfur, phosphorus, etc. And blue represents heavy metals with an effective atomic number of 18 or more, such as iron, zinc, nickel, etc. In practice, however, objects are generally mixed and superimposed, and at the same time vary in size and have widely differing absorption properties for X-rays. This does not strictly follow the above rule. Therefore, in x-ray baggage scanner examinations where the density or size is too large, the X-ray image of the object penetrated by the X-ray will appear black or black-red. X-ray baggage scanner is an imaging system capable of producing a digital radiation image, the purpose of which is to convert detailed image information invisible to the human eye into an image visible to the naked eye, consisting mainly of a radiation source, the main components are the radiation source, the radiation detector, the data acquisition, and transmission equipment and the image processing equipment.

Working principle of the x-ray baggage scanner

The inspected item enters the inspection lane and obscures the baggage detection sensor (light barrier). The detection signal is sent to the control unit, which generates an X-ray trigger signal that triggers the X-ray source to emit X-rays, which pass through the collimator to form a very thin fan-shaped X-ray beam that passes through the inspected item and reaches the detector. The detector converts the optical signal of the X-rays into an electrical signal and then reproduces the outline, composition, and material properties of the item inside the parcel using image processing software. Once the inspected item has passed through the inspection area, the ray generator stops producing rays. When the item is inspected, a very thin fan-shaped X-ray beam will sweep through the inspected item layer by layer, which is equivalent to slicing the inspected item. The image acquisition system collects and stores the image information for each layer of the scan line, and when the conveyor belt conveys the inspected item through the inspection area, the entire image information of the inspected item will be obtained, forming its complete X-ray image The generated image can be displayed on the monitor or stored When the x-ray baggage scanner is in operation, security personnel needs to determine the type of item to be inspected by observing the color and outline of the items presented in the X-ray image. To ensure a high level of accuracy and efficiency, the x-ray baggage scanner operator needs to have a relevant background of knowledge and, above all, long experience.

If you are interested in the x-ray baggage scanner, you can contact us at http://www.safeway-system.com/, we welcome you and look forward to working with you.