CN101113960A - Device for testing explosive with backscatter technology - Google Patents
Device for testing explosive with backscatter technology Download PDFInfo
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- CN101113960A CN101113960A CNA2006100293309A CN200610029330A CN101113960A CN 101113960 A CN101113960 A CN 101113960A CN A2006100293309 A CNA2006100293309 A CN A2006100293309A CN 200610029330 A CN200610029330 A CN 200610029330A CN 101113960 A CN101113960 A CN 101113960A
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- wheel
- collimating apparatus
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- backward scattering
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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
The present invention relates to a kind of X ray safety inspection equipment, particularly a kind of backscattering technique that utilizes carries out the device that explosive detects.
Background technology
Most existing X ray safety check system is mainly still used x-ray source, produces the ray of covering of the fan, receives formation transmission projection image again with the detector linear array.Like this, various materials overlap, and certainly will influence the judgement of material.Use double energy X-ray to carry out that material judges though also have, also only can distinguish organism and inorganics, can not further differentiate explosive soap etc., very easily cause supervisory personnel's erroneous judgement.
Backward scattering is exactly that incident electron and detection material atom out orbit electronics or free electron bump and part that scattering is returned.The backward scattering radiant quantity is relevant with the atomic number and the density of detecting material, therefore, by backscattering technique, can survey the atomic number and the density of analyte, thereby effectively differentiate material.Special needs to be pointed out is: the atomic number of material is low more, and its backward scattering is strong more.And the atomic number of explosive, detonator all is very low, and this just provides means for we effectively differentiate explosive, detonator.Transmission X radial imaging technology is carried out high resolving power and the forthright monitoring of high-penetration to high density material, and the back scattering imaging technology then can be carried out fast detecting to organic material.
The ray that mostly is the covering of the fan or the conical surface that conventional x-ray source produces, as shown in Figure 1, will produce the multiple tracks reflection ray when ray surface is scanned up to object, interference search gear is to the reception of signal, and can't differentiate the concrete source of institute's acknowledge(ment) signal, to such an extent as to can not produce backscatter images.
Summary of the invention
The object of the present invention is to provide a kind of backscattering technique that utilizes to carry out the device that explosive detects, adopt new flying spot to form mechanism, can improve the resolution that is scattered image, improve the ability of dangerous material such as judging explosive, detonator.
For achieving the above object, a kind of backscattering technique that utilizes provided by the invention carries out the device that explosive detects, and it comprises cuts the wheel collimating apparatus, is arranged at the x-ray source of cutting wheel collimating apparatus axial centre position, cuts wheel collimating apparatus below and also is provided with driving mechanism;
The described wheel collimating apparatus of cutting radially evenly is provided with some collimating apertures, in fixing X ray transmitting boundary, X ray is collimated into a hot spot that diameter is very little, rotary drive mechanism drives to be cut the wheel collimating apparatus and rotates around x-ray source, make that hot spot goes round and begins again from bottom to top or scanning from the top down.
Described rotary drive mechanism comprises fixing support rack and motor; Described fixing support rack supports the described wheel collimating apparatus of cutting;
Described a kind of backscattering technique that utilizes carries out the device that explosive detects, and also comprises backward scattering detector set and transmission detectors;
Described backward scattering detector set comprises some backward scattering detectors, and this backward scattering detector set is arranged on cuts between wheel collimating apparatus and the object;
Described transmission detectors is arranged on the opposite side of the object relative with described backward scattering detector set, with the backward scattering detector set, cut the wheel collimating apparatus in a straight line.
The rotary drive mechanism driving is cut the wheel collimating apparatus and is rotated vertically, x-ray source is launched the fan ray face, X ray by cut wheel on the collimating apparatus collimating aperture and the opening part of backward scattering detector set form beam, scan object to be detected from top to bottom, after an angle is finished, next collimating aperture enters ray surface, forms continuous flying spot thus and realizes flying-spot scanner.
Owing to be point-like beam irradiating object, reflected ray becomes in the unit interval unique, so can calculate the time series of flying spot according to the fixed rate of cutting the wheel rotation, thereby particular location on the corresponding object of gained reflected ray institute as can be known, behind complete object of scanning wire harness scanning, ray is formed reflected ray by object reflection back, received by the backward scattering detector set, detector is according to the flying-spot scanner clock signal of noting, form scan time series object top layer situation digital signal, obtain checking matter body surface tomographic image by Computer Processing and feedback.Ray forms projection radiation after passing object, is accepted by transmission detectors, obtains the interior of articles image by Computer Processing and feedback.
A kind of backscattering technique that utilizes provided by the invention carries out the device that explosive detects, and adopts new flying spot to form mechanism, has improved the resolution of backscatter images, has improved the ability of judging dangerous material such as explosive, detonator.
Description of drawings
Fig. 1 is a radiation exposure schematic diagram in the background technology;
Fig. 2 is a kind of structural representation that utilizes backscattering technique to carry out the device of explosive detection provided by the present invention;
Fig. 3 position schematic diagram of cutting the wheel collimating apparatus of the present invention.
Embodiment
Followingly specify a kind of better embodiment of the present invention according to Fig. 2, Fig. 3:
As shown in Figure 2, for a kind of backscattering technique that utilizes provided by the invention carries out the device that explosive detects, it comprises cuts wheel collimating apparatus 1, is arranged at the x-ray source 2 of cutting wheel collimating apparatus 1 axial centre position, cuts wheel collimating apparatus below and also is provided with driving mechanism 3;
The described wheel collimating apparatus 1 of cutting radially evenly is provided with some collimating apertures 101, in fixing X ray transmitting boundary, X ray is collimated into a hot spot that diameter is very little, rotary drive mechanism 3 drives cuts wheel collimating apparatus 1 around x-ray source 2 rotations, make that hot spot goes round and begins again from bottom to top or scanning from the top down.
Described rotary drive mechanism 3 comprises fixing support rack 301 and motor 302; Described fixing support rack 301 supports the described wheel collimating apparatus 1 of cutting;
Described a kind of backscattering technique that utilizes carries out the device that explosive detects, and also comprises backward scattering detector set 4 and transmission detectors 5 that circuit connects;
Described backward scattering detector set 4 comprises some backward scattering detectors, and this backward scattering detector set 4 is arranged on cuts between wheel collimating apparatus 1 and the object 6;
Described transmission detectors 5 is arranged on the opposite side of the object relative with described backward scattering detector set 4, with backward scattering detector set 4, cut wheel collimating apparatus 1 in a straight line.
As shown in Figure 3, rotary drive mechanism 3 drives are cut wheel collimating apparatus 1 and are rotated vertically, x-ray source 2 is launched 60 ° of fan ray faces, X ray forms form of a stroke or a combination of strokes beam 7 by the opening part of collimating aperture 101 and backward scattering detector set, scan object to be detected 6 from top to bottom, after an angle scanning was finished, next collimating aperture 101 entered ray surface, formed continuous flying spot thus and realized flying-spot scanner.
Owing to be point-like beam irradiating object, reflected ray becomes in the unit interval unique, so can calculate the time series of flying spot according to the fixed rate of cutting wheel rotation 1, thereby particular location on the corresponding object 6 of gained reflected ray institute as can be known, behind complete object of scanning wire harness 7 scannings, ray is formed reflected ray by object reflection back, received by the backward scattering detector set, detector is according to the flying-spot scanner clock signal of noting, form scan time series object top layer situation digital signal, obtain checking matter body surface tomographic image by Computer Processing and feedback.Ray forms projection radiation after passing object, is accepted by transmission detectors, obtains the interior of articles image by Computer Processing and feedback.
A kind of backscattering technique that utilizes provided by the invention carries out the device that explosive detects, and adopts new flying spot to form mechanism, has improved the resolution of backscatter images, has improved the ability of judging dangerous material such as explosive, detonator.
Claims (3)
1. one kind is utilized backscattering technique to carry out the device that explosive detects, and it is characterized in that, comprises and cuts wheel collimating apparatus (1), is installed on the x-ray source (2) of cutting wheel collimating apparatus (1) axial location, cuts wheel collimating apparatus (1) below and is provided with rotary drive mechanism (3);
Described a kind of backscattering technique that utilizes carries out the device that explosive detects, and also comprises backward scattering detector set (4) and transmission detectors (5) that circuit connects;
The described wheel collimating apparatus (1) of cutting radially evenly is provided with some collimating apertures (101), in fixing X ray transmitting boundary, X ray is collimated into a hot spot that diameter is very little, rotary drive mechanism (3) drives cuts wheel collimating apparatus (1) around x-ray source (2) rotation, make that hot spot goes round and begins again from bottom to top or scanning from the top down.
2. a kind of backscattering technique that utilizes as claimed in claim 1 carries out the device that explosive detects, it is characterized in that, described backward scattering detector set (4) comprises some backward scattering detectors, and this backward scattering detector set is arranged on cuts between wheel collimating apparatus (1) and the object (6).
3. a kind of backscattering technique that utilizes as claimed in claim 1 carries out the device that explosive detects, and it is characterized in that described transmission detectors (5) is arranged on object (6) outside, with backward scattering detector set (4), cut wheel collimating apparatus (1) in a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100293309A CN101113960B (en) | 2006-07-25 | 2006-07-25 | Device for testing explosive with backscatter technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100293309A CN101113960B (en) | 2006-07-25 | 2006-07-25 | Device for testing explosive with backscatter technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101113960A true CN101113960A (en) | 2008-01-30 |
| CN101113960B CN101113960B (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100293309A Active CN101113960B (en) | 2006-07-25 | 2006-07-25 | Device for testing explosive with backscatter technology |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102478529A (en) * | 2010-11-25 | 2012-05-30 | 上海英迈吉东影图像设备有限公司 | Method and device for forming X-ray flying spot |
| CN102645442A (en) * | 2012-05-04 | 2012-08-22 | 上海英迈吉东影图像设备有限公司 | System and method using electronic deflection to form flying spot |
| CN102854539A (en) * | 2011-06-29 | 2013-01-02 | 上海英迈吉东影图像设备有限公司 | External mounting movable examination system based on back scattering imaging |
| CN103063691A (en) * | 2011-10-18 | 2013-04-24 | 北京睿思厚德辐射信息科技开发有限公司 | Double-flying line multi-slit scanning backscatter planar imaging, stereoscopic imaging and self-scanning imaging device |
| CN103635002A (en) * | 2012-08-21 | 2014-03-12 | 同方威视技术股份有限公司 | Integrated flying spot X-ray machine |
| CN103649734A (en) * | 2010-09-30 | 2014-03-19 | 上海英迈吉东影图像设备有限公司 | Point-by-point scanning device and method uesd in X ray imaging |
| CN103901064A (en) * | 2012-12-27 | 2014-07-02 | 清华大学 | Ray emission device, imaging system and inspection method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108240997B (en) * | 2016-12-26 | 2020-09-04 | 同方威视技术股份有限公司 | Inspection apparatus and method of inspecting container |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5179581A (en) * | 1989-09-13 | 1993-01-12 | American Science And Engineering, Inc. | Automatic threat detection based on illumination by penetrating radiant energy |
| US5974111A (en) * | 1996-09-24 | 1999-10-26 | Vivid Technologies, Inc. | Identifying explosives or other contraband by employing transmitted or scattered X-rays |
| CN1139803C (en) * | 2001-07-26 | 2004-02-25 | 清华大学 | Non-destructive gamma back-scattering imaging detection method and detector |
| CN1207558C (en) * | 2003-08-22 | 2005-06-22 | 貊大卫 | Backscattering type X-ray scanner |
| CN2927043Y (en) * | 2006-07-25 | 2007-07-25 | 上海英迈吉东影图像设备有限公司 | Apparatus for inspecting explosive by back scattering technology |
-
2006
- 2006-07-25 CN CN2006100293309A patent/CN101113960B/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103649734A (en) * | 2010-09-30 | 2014-03-19 | 上海英迈吉东影图像设备有限公司 | Point-by-point scanning device and method uesd in X ray imaging |
| CN102478529A (en) * | 2010-11-25 | 2012-05-30 | 上海英迈吉东影图像设备有限公司 | Method and device for forming X-ray flying spot |
| CN102854539A (en) * | 2011-06-29 | 2013-01-02 | 上海英迈吉东影图像设备有限公司 | External mounting movable examination system based on back scattering imaging |
| CN102854539B (en) * | 2011-06-29 | 2016-05-04 | 上海英迈吉东影图像设备有限公司 | A kind of external hanging type mobile checking system based on back scattering imaging |
| CN103063691A (en) * | 2011-10-18 | 2013-04-24 | 北京睿思厚德辐射信息科技开发有限公司 | Double-flying line multi-slit scanning backscatter planar imaging, stereoscopic imaging and self-scanning imaging device |
| CN103063691B (en) * | 2011-10-18 | 2014-11-12 | 北京睿思厚德辐射信息科技开发有限公司 | Double-flying line multi-slit scanning backscatter planar imaging, stereoscopic imaging and self-scanning imaging device |
| CN102645442A (en) * | 2012-05-04 | 2012-08-22 | 上海英迈吉东影图像设备有限公司 | System and method using electronic deflection to form flying spot |
| CN103635002A (en) * | 2012-08-21 | 2014-03-12 | 同方威视技术股份有限公司 | Integrated flying spot X-ray machine |
| CN103635002B (en) * | 2012-08-21 | 2016-03-16 | 同方威视技术股份有限公司 | Integral type flying spot X-ray machine |
| US9355810B2 (en) | 2012-08-21 | 2016-05-31 | Nuctech Company Limited | Integrated flying-spot X-ray apparatus |
| CN103901064A (en) * | 2012-12-27 | 2014-07-02 | 清华大学 | Ray emission device, imaging system and inspection method |
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| Publication number | Publication date |
|---|---|
| CN101113960B (en) | 2010-07-21 |
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Denomination of invention: Device for testing explosive with backscatter technology Effective date of registration: 20131016 Granted publication date: 20100721 Pledgee: Shanghai rural commercial bank Limited by Share Ltd Zhangjiang Branch of science and technology Pledgor: Shanghai Eastimage Equipments Co., Ltd. Registration number: 2013310000051 |
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