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Device for testing explosive with backscatter technology

A technology of backscattering and explosives, which is applied in material analysis using radiation, measuring devices, material analysis using wave/particle radiation, etc. It can solve the problem of interfering with the signal reception of the detector, the inability to distinguish the specific source of the signal, and the inability to produce backscattering Image and other problems, to achieve the effect of improving the resolution

Active Publication Date: 2008-01-30
SHANGHAI EASTIMAGE EQUIP
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Problems solved by technology

[0004] Conventional X-ray sources mostly produce fan or cone rays, as shown in Figure 1, when the ray surface scans to the object, multiple reflected rays will be generated, which will interfere with the detector's reception of the signal, and cannot distinguish the received signal. Specific sources so that backscatter images cannot be produced

Method used

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  • Device for testing explosive with backscatter technology
  • Device for testing explosive with backscatter technology

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Embodiment approach

[0019] As shown in Fig. 2, a kind of device that utilizes backscattering technology to carry out explosives detection that the present invention provides, it comprises cutting wheel collimator 1, the X-ray source 2 that is arranged at the axial center position of cutting wheel collimator 1, A drive mechanism 3 is also provided below the wheel-cutting collimator;

[0020] The cutting wheel collimator 1 is evenly provided with a number of collimating holes 101 in the radial direction, and the X-rays are collimated into a spot with a small diameter within a fixed X-ray emission range, and the rotating drive mechanism 3 drives the cutting wheel collimator. The collimator 1 rotates around the X-ray source 2 to scan the light spot from bottom to top or top to bottom.

[0021] The rotary drive mechanism 3 includes a fixed support frame 301 and a motor 302; the fixed support frame 301 supports the wheel-cutting collimator 1;

[0022] The device for detecting explosives using backscat...

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Abstract

The invention relates to a device of detecting dynamite by backscatter technique, which is characterized in that the device includes a cutting wheel collimating element, an X-actinogen which is arranged in the axial direction of cutting wheel collimating element, a driving element which is arranged below the cutting wheel collimating element, a backscatter detector with circuitry conjunction and a transmission detector. By adopting the new means for forming flying dots, the invention improves the resolution of backscatter image and the ability of assessment dynamite and detonator.

Description

technical field [0001] The invention relates to an X-ray safety inspection device, in particular to a device for detecting explosives using backscattering technology. Background technique [0002] Most of the existing X-ray security inspection systems mainly use X-ray sources to generate fan-shaped rays, which are then received by detector line arrays to form transmission projection images. In this way, the overlapping of various substances is bound to affect the determination of substances. Although some use dual-energy X-rays to identify substances, they can only distinguish between organic and inorganic substances, and cannot further distinguish whether they are explosives or soap, which can easily cause misjudgments by inspectors. [0003] Backscattering is the part of the incident electrons colliding with the orbital electrons or free electrons in the outer layers of the detection material atoms and scattered back. The amount of backscattered radiation is related to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/203G01N23/04G01N23/08
Inventor 王满仓王国岭梁石磊屈俊健王进刚
Owner SHANGHAI EASTIMAGE EQUIP
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