Channel X-ray Backscatter Human Security Scanning System

Abstract

The invention relates to a channel-type X-ray backscatter human body safety scanning system, which is characterized in that it comprises two X-ray backscatter human body safety scanners with the same structure, and the two X-ray backscatter human body safety scanners are placed opposite to each other, and the middle A scanning channel is formed; a differential control device for controlling two X-ray backscattering human body safety scanners to realize differential detection is also included. With the above-mentioned technical solution, it is possible to check double-sided human body images in one pass in a short period of time, without the need for personnel to stop and turn around in place to perform two inspections on the front and back sides, which is fast, simple and convenient, thereby shortening the time for double-sided scanning of the human body. The original more than 20 seconds is reduced to about 10 seconds; because the scanning does not have any contact with the human body, many human troubles can be avoided, so channel-type concealed inspections can be performed on special occasions. In addition, the present invention has a small volume and a more compact structure; the present invention swings up and down while lifting horizontally, greatly expanding the scanning range, and the cooperation of the main and auxiliary columns improves the stability of operation.

Description

technical field [0001] The invention belongs to the technical field of radiation safety detection, and in particular relates to a safety detection method for people in public places, which can quickly detect various metal and non-metal contraband carried on the body surface under the clothes of people when passing through the security inspection channel. Channel type X-ray backscatter human body security scanning system. Background technique [0002] The X-ray backscatter human body security scanner is based on the principle of Compton backscatter imaging. The equipment uses the incoherent scattering effect of the interaction between X-rays and matter. The incident X-ray photons collide with the free electrons of the detected matter. Part of the energy is transferred to the free electrons to become recoil electrons, which lose energy and change direction to become scattered photons. The special scattering detector of the equipment collects the X-ray photons scattered by the ...

AI Technical Summary

Problems solved by technology

[0007] The current X-ray security scanner uses the flying point scanning mechanism to divide the flying point scanning into two-dimensional modules of horizontal scanning and vertical scanning, but there are defects in the vertical scanning process. Due to the height limit of the scanner, it often occurs The scanning height is not enough, and at the same time, there will be a dead zone at the bottom of the scan, that is to say, when the height is not enough, the head and feet of the person being scanned cannot be scanned. In order to solve the above defects, the current general practice is to use the scanner Extend in the height direction of the scanner, and at the same time cooperate with the scanner to stand on the platform, so that the whole body can be scanned. The defect of adopting this technical solution is that the volume of the scanner is greatly increased, and the manufacturing cost, transportation cost, etc. are also increased; in addition , some scanners increase the flying point scanning mechanism to swing up and down at a certain angle during the scanning process, which can properly reduce the overall height of the scanner, but it still cannot completely solve the problem.

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