Security check system

A technology of security inspection and mounting frame, applied in the field of security inspection system, can solve the problem that the image quality needs to be improved, and achieve the effect of improving the imaging quality
CN108732192AInactive Publication Date: 2018-11-02TSINGHUA UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2018-11-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of security check, in particular to a security check system. The provided security check system comprises a back scattering scanning device and a support device, wherein a check channel allowing a checked article to pass is formed by the support device, the back scattering scanning device is arranged at the upper part of the support device and comprisesa back scattering radiation source device and a back scattering detection device, and the support device adjusts the height of the back scattering scanning device. By means of the support device of the security check system, the height of the back scattering scanning device mounted on the support device can be adjusted, the sizes of a flying point light spot projection and the aperture angle areconveniently adjusted according to the height of the checked article in the scanning process, and therefore, the imaging quality of a back scattering image can be effectively improved.
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Description

technical field

[0001] The invention relates to the technical field of safety inspection, in particular to a safety inspection system. Background technique

[0002] The security inspection system is a device that scans and inspects objects such as vehicles, containers, and aircraft to obtain images at customs and airports. From the perspective of imaging principles, security inspection systems can be divided into two categories: transmission imaging and backscatter imaging. Among them, the backscatter imaging technology uses the Compton scattering effect to capture photons reflected by the scanned object for imaging. The scattering image is formed by the ray signal scattered by the object at a certain depth in the direction of the detector. Due to the stronger Compton scattering of rays in low atomic number substances such as explosives and drugs, backscatter imaging technology can distinguish materials and highlight organic substances, which has low radiation dose, sensit...

Claims

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