Channel type double-view-angle X-ray safety inspection device

Abstract

The invention discloses a channel type double-view-angle X-ray safety inspection device which comprises a conveying channel and double view angles. The double view angles are composed of two groups of X-ray sources and detectors, each group of X-ray source and detector forms an imaging system for one view angle, and the double view angles are a first view angle and a second view angle arranged around the conveying channel; the first view angle comprises a first X-ray source and a first detector; the second view angle comprises a second X-ray source and a second detector; the first X-ray source is located just under a side plate on one side of the conveying channel, and the second X-ray source is located just under a side plate on the other side of the conveying channel. The channel type double-view-angle X-ray safety inspection device has the advantages that view field of a security inspector is wider, the second view angle has more use values than a traditional side view angle, and no blind corner for imaging of a piece-shaped object occurs.

Description

technical field [0001] The invention relates to a channel-type dual-view X-ray safety inspection device, which belongs to the technical field of X-ray safety inspection. Background technique [0002] At present, with the increasingly severe anti-terrorism situation in the world, various types of security inspection equipment continue to emerge, among which the channel-type X-ray security inspection equipment for passenger packages is the most in demand. The traditional type of package security inspection equipment forms an X-ray fan beam in a space plane that is orthogonal to the ground and the direction of package delivery. As the package continues to advance, the ray fan beam scans each slice of the package to form a perspective image of the package; in order to The ability to observe at different angles is obtained, and perspective imaging is performed from different directions in the above-mentioned slice plane, thereby producing various dual-view or even multi-view devi...

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Problems solved by technology

[0004] 2) Use the turntable device to turn the package to the angle that needs to be detected before accepting the scanning of the second viewing angle. For example, the patent publication number is US20030031293, US20120027171 and other patents, but obviously requires a complicated mechanical structure and increases the length of the equipment

[0010] 1. In the direction of viewing angle imaging, multiple objects blocking each other will cause difficulties for security inspectors to observe

[0011] 2. Some thin objects, such as blades and mobile phones, hereinafter referred to as sheets, if the posture is close to the plane parallel to the ray fan beam, they will be imaged as a thin strip, which can be imaged but loses key information

[0013] 1) Due to the objective law of the placement of items in the package, the phenomenon of overlapping images of items in the side-view perspective is very serious, resulting in a low use value of the side-view perspective;

[0014] 2) It is still not possible to ensure that the above-mentioned problem that the sheet is imaged as a thin strip is solved. For example, if there are blades attached to the front and rear side walls of the package, only a thin line can be seen in the two viewing angles of the traditional dual-view device.

[0015] The above problems lead to the security inspectors often need to rotate the package 90 degrees according to the rotation axis vertical to the ground (that is, turn it sideways) to perform security inspection again when performing package security inspection. The purpose is to observe the package from a different angle, that is, not only limited to the same plane Change the angle of view within the entire space, but completely change the angle of observation in the entire space; however, this method of operation will bring about a decline in security inspection efficiency and reduce the passenger flow of passengers per unit time

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