CN2872353Y - Safety determiner by back scattering technology - Google Patents
Safety determiner by back scattering technology Download PDFInfo
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- CN2872353Y CN2872353Y CN 200620038807 CN200620038807U CN2872353Y CN 2872353 Y CN2872353 Y CN 2872353Y CN 200620038807 CN200620038807 CN 200620038807 CN 200620038807 U CN200620038807 U CN 200620038807U CN 2872353 Y CN2872353 Y CN 2872353Y
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- flywheel
- turning axle
- collimating apparatus
- driving mechanism
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Abstract
The utility model relates to a security detection device based on backscattering technique, which comprises a X-ray source, a flying-spot forming mechanism, a driving mechanism and a backscattering detector. The flying-spot forming mechanism is disposed in front of the X-ray source and includes a rotary shaft and an upright collimator connected to and in front of a fly wheel of the rotary shaft. By using backscattering technique and novel flying-spot formation means, the utility model has good workability in increasing the resolution of backscattering image and identifying dangerous goods such as explosives and detonators.
Description
Technical field
The utility model relates to a kind of device that utilizes backscattering technique to carry out safety detection, relates in particular to a kind of backscattering technique that utilizes and carries out the device that explosive detects.
Background technology
Most existing X ray safety check system mainly is to use x-ray source, produces the ray of covering of the fan, accepts with the detector linear array again, forms the transmission projection image.If various materials overlap, just influenced 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.Know now: 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.
Patent publication No. is the United States Patent (USP) of CN 1556921A: X-ray backscatter mobile inspection van, be to utilize the vanning of flying-spot scanner form detected set, what obtain is backscatter images, but the structure that it forms the scanning wire harness is very complicated, and imaging system is also unstable.
The flying spot scanning device of above-mentioned patent as shown in Figure 1, the target center of x-ray source be positioned at rotating disc 1 ' the center, have several conical bores on the rotating disc, its conical bore quantity N changes N=360 °/scanning angle with scanning angle.Scanning angle among the figure=60 °, N=360 °/60 °=6.X ray by conical bore impinge upon object 3 ' on, the backward scattering detector receives the backward scattering signal.Like this, when rotating disc 1 ' when the center rotates, X ray is scanning object from bottom to top just, after a scanning angle is finished, connects next conical bore automatically, form continuous sweep trace 2 ', the backward scattering signal is also received thereupon continuously.Object moves along the direction vertical with X ray, has just formed the X-ray scanning to whole object.
There are many shortcomings in above-mentioned technology, mainly shows as: rotating disc processing is comparatively complicated, X ray shielding difficulty; Conical bore on the rotating disc is difficult for processing, requires the diameter in hole can not be big, if diameter is big, resolution just reduces, and the hole more can not be a cylindrical hole, and cylindrical hole will cause the X ray visual field that interference is arranged; X-ray source is in the rotating disc center, causes the rotating disc enlarged diameter, and quality and moment of inertia also strengthen thereupon, cause power excessive; The target center of x-ray source wants strictness to be positioned at the rotating disc center, causes its installation, adjustment, maintenance, replacing very complicated.
The utility model content
The utility model provides a kind of device that utilizes backscattering technique to carry out safety detection, adopts new flying spot to form mechanism, can improve backscatter images resolution, improves the ability of dangerous material such as judging explosive, detonator.
For achieving the above object, a kind of device that utilizes backscattering technique to carry out safety detection that the utility model provides, it comprises x-ray source, flying spot forms mechanism, driving mechanism and backward scattering detector;
Described flying spot forms the front end that mechanism places x-ray source, and it comprises turning axle, connects the flywheel and the vertical collimating apparatus that places the flywheel front of turning axle;
Described turning axle is one the multidiameter of keyway to be arranged, and is fixed on the turning axle support that is connected with driving mechanism;
Described flywheel is the steel-structure flywheel of an embedding lead protection, radially has some roads fine rule groove;
Described vertical collimating apparatus is a linear collimating apparatus, place vertical with travelling belt, and the centre has elongated straight-line groove;
Described driving mechanism comprise a motor, the small belt pulley that is connected with motor, the big belt pulley that is connected with turning axle and be enclosed within small belt pulley and big belt pulley on belt; Driven by motor cuticle bag wheel rotates, and drive big belt pulley by belt and rotate, thereby the driven rotary axle rotates;
Described backward scattering detector is placed on vertical collimating apparatus and is detected between the object;
The rotation of driving mechanism driven rotary axle, thereby drive the flywheel rotation, when flywheel rotates, straight-line groove on fine rule groove above the flywheel and the vertical collimating apparatus intersects a bit, it is flying spot, X ray forms a light beam by this point, rotation with flywheel, the track of this light beam is done rectilinear motion along the straight-line groove of vertical collimating apparatus, forms sweep trace, finishes the line sweep to the object in the vertical direction, the backward scattering detector is accepted the backward scattering signal of object, be back scattering X-ray,, finally finish face scanning whole object along with the motion of object.
A kind of device that utilizes backscattering technique to carry out safety detection that the utility model provides, backscatter images resolution has improved in the formation mechanism that has improved flying spot, improves the ability of dangerous material such as judging explosive, detonator.
Description of drawings
Fig. 1 is a backward scattering flying-spot scanner synoptic diagram in the background technology;
A kind of structural representation that utilizes backscattering technique to carry out the device of safety detection that Fig. 2 a provides for the utility model;
A kind of side view that utilizes backscattering technique to carry out the device of safety detection that Fig. 2 b provides for the utility model;
A kind of vertical view that utilizes backscattering technique to carry out the device of safety detection that Fig. 2 c provides for the utility model;
A kind of structural representation that utilizes the flywheel of the device that backscattering technique carries out safety detection that Fig. 3 provides for the utility model;
A kind of structural representation that utilizes the driving mechanism of the device that backscattering technique carries out safety detection that Fig. 4 provides for the utility model.
Embodiment
Followingly specify a kind of preferred forms of the present utility model according to Fig. 2～Fig. 4:
Shown in Fig. 2 a～Fig. 2 c, be a kind of device that utilizes backscattering technique to carry out safety detection that the utility model provides, it comprises x-ray source 101, flying spot forms mechanism, driving mechanism and backward scattering detector 104;
Described flying spot forms mechanism and places x-ray source 101 front ends, comprises turning axle 1021, connects the flywheel 1022 and the vertical collimating apparatus 1023 that places flywheel 1022 fronts of turning axle 1021;
Described turning axle 1021 is one the multidiameter of keyway to be arranged, and is fixed on the turning axle support 1024 that is connected with driving mechanism;
As shown in Figure 3, described flywheel 1022 is the steel-structure flywheel of an embedding lead protection, radially has some roads fine rule groove 1025;
Described vertical collimating apparatus 1023 is a linear collimating apparatus, place vertical with travelling belt, and the centre has elongated straight-line groove 1026;
As shown in Figure 4, described driving mechanism comprise a motor 1031, the small belt pulley 1032 that is connected with motor 1031, the big belt pulley 1033 that is connected with turning axle 1021 and be enclosed within small belt pulley 1032 and big belt pulley 1033 on belt 1034; Motor 1031 drives cuticle bag wheel 1032 and rotates, and drive big belt pulley 1033 by belt 1034 and rotate, thereby driven rotary axle 1021 rotates;
Described backward scattering detector 104 is placed on vertical collimating apparatus 1023 and is detected between the object 5;
1021 rotations of driving mechanism driven rotary axle, thereby drive flywheel 1022 rotations, when flywheel 1022 rotates, straight-line groove 1026 on fine rule groove 1025 above the flywheel 1022 and the vertical collimating apparatus 1023 intersects a bit, it is flying spot 7, X ray forms a light beam 6 by this point, rotation with flywheel, the track of this light beam 6 is done rectilinear motion along the straight-line groove 1026 of vertical collimating apparatus 1023, forms sweep trace, finishes the line sweep to the object in the vertical direction, backward scattering detector 104 is accepted the backward scattering signal of object, be back scattering X-ray,, finally finish face scanning whole object along with the motion of object.
A kind of device that utilizes backscattering technique to carry out safety detection that the utility model provides, backscatter images resolution has improved in the formation mechanism that has improved flying spot, improves the ability of dangerous material such as judging explosive, detonator.
Claims (4)
1. a device that utilizes backscattering technique to carry out safety detection is characterized in that, comprises x-ray source (101), and flying spot forms mechanism, driving mechanism and backward scattering detector (104);
Described flying spot forms the front end that mechanism places x-ray source (101), and it comprises turning axle (1021), connects the flywheel (1022) of turning axle (1021) and places the preceding vertical collimating apparatus (1023) of flywheel (1022);
Described flywheel (1022) is the flywheel of an embedding lead protection, along radially having of this flywheel (1022) some roads fine rule groove (1025);
Described vertical collimating apparatus (1023) is a linear collimating apparatus, and the centre has straight-line groove (1026);
Described backward scattering detector (104) is placed on vertical collimating apparatus (1023) and is detected between the object (5).
2. the device that utilizes backscattering technique to carry out safety detection as claimed in claim 1 is characterized in that, described turning axle (1021) is one the multidiameter of keyway to be arranged, and is fixed on the turning axle support (1024) that is connected with driving mechanism.
3. the device that utilizes backscattering technique to carry out safety detection as claimed in claim 1 is characterized in that, described vertical collimating apparatus (1023) is vertical with travelling belt places.
4. the device that utilizes backscattering technique to carry out safety detection as claimed in claim 1, it is characterized in that, described driving mechanism comprise a motor (1031), the small belt pulley (1032) that is connected with motor (1031), the big belt pulley (1033) that is connected with turning axle (1021) and be enclosed within small belt pulley (1032) and big belt pulley (1033) on belt (1034); This driving mechanism connects the turning axle support (1024) that flying spot forms mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620038807 CN2872353Y (en) | 2006-01-10 | 2006-01-10 | Safety determiner by back scattering technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620038807 CN2872353Y (en) | 2006-01-10 | 2006-01-10 | Safety determiner by back scattering technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2872353Y true CN2872353Y (en) | 2007-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620038807 Expired - Lifetime CN2872353Y (en) | 2006-01-10 | 2006-01-10 | Safety determiner by back scattering technology |
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| Country | Link |
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| CN (1) | CN2872353Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680501A (en) * | 2012-05-26 | 2012-09-19 | 中国人民解放军信息工程大学 | Collimation system for X-ray backscatter scanner |
| CN104764759A (en) * | 2015-04-01 | 2015-07-08 | 中国原子能科学研究院 | Jumper flying-spot scanning device for X-ray backscatter imaging system |
| WO2015185003A1 (en) * | 2014-06-06 | 2015-12-10 | 同方威视技术股份有限公司 | Collimation modulatable x-ray generator |
| CN105242323A (en) * | 2015-10-28 | 2016-01-13 | 北京紫方启研科技有限公司 | Walking-type backscatter imaging instrument |
| CN105319602A (en) * | 2015-10-28 | 2016-02-10 | 北京紫方启研科技有限公司 | Hand-held backscatter imaging instrument |
| CN105372272A (en) * | 2015-10-28 | 2016-03-02 | 北京紫方启研科技有限公司 | Handheld anti-shake back scattering imager |
| CN105403926A (en) * | 2015-10-28 | 2016-03-16 | 北京紫方启研科技有限公司 | Walking track base backscattering imager |
| CN115728332A (en) * | 2021-08-31 | 2023-03-03 | 同方威视技术股份有限公司 | Backscatter scanning system |
-
2006
- 2006-01-10 CN CN 200620038807 patent/CN2872353Y/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680501A (en) * | 2012-05-26 | 2012-09-19 | 中国人民解放军信息工程大学 | Collimation system for X-ray backscatter scanner |
| CN102680501B (en) * | 2012-05-26 | 2013-11-20 | 中国人民解放军信息工程大学 | Collimation system for X-ray backscatter scanner |
| WO2015185003A1 (en) * | 2014-06-06 | 2015-12-10 | 同方威视技术股份有限公司 | Collimation modulatable x-ray generator |
| RU2659816C2 (en) * | 2014-06-06 | 2018-07-04 | Нактек Компани Лимитед | Collimation modulatable x-ray generator |
| CN104764759A (en) * | 2015-04-01 | 2015-07-08 | 中国原子能科学研究院 | Jumper flying-spot scanning device for X-ray backscatter imaging system |
| CN104764759B (en) * | 2015-04-01 | 2017-11-21 | 中国原子能科学研究院 | A kind of wire jumper flying spot scanning device for X ray back scattering imaging system |
| CN105372272A (en) * | 2015-10-28 | 2016-03-02 | 北京紫方启研科技有限公司 | Handheld anti-shake back scattering imager |
| CN105403926A (en) * | 2015-10-28 | 2016-03-16 | 北京紫方启研科技有限公司 | Walking track base backscattering imager |
| CN105319602A (en) * | 2015-10-28 | 2016-02-10 | 北京紫方启研科技有限公司 | Hand-held backscatter imaging instrument |
| CN105319602B (en) * | 2015-10-28 | 2018-04-03 | 北京紫方启研科技有限公司 | Hand-held back scattering imaging instrument |
| CN105242323A (en) * | 2015-10-28 | 2016-01-13 | 北京紫方启研科技有限公司 | Walking-type backscatter imaging instrument |
| CN105372272B (en) * | 2015-10-28 | 2018-10-23 | 北京紫方启研科技有限公司 | Hand-held stabilization formula back scattering imaging instrument |
| CN115728332A (en) * | 2021-08-31 | 2023-03-03 | 同方威视技术股份有限公司 | Backscatter scanning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070221 |
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| EXPY | Termination of patent right or utility model |