CN104297808A - Rapid inverse-scattering three-dimensional flying spot scanner - Google Patents
Rapid inverse-scattering three-dimensional flying spot scanner Download PDFInfo
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- CN104297808A CN104297808A CN201410623878.0A CN201410623878A CN104297808A CN 104297808 A CN104297808 A CN 104297808A CN 201410623878 A CN201410623878 A CN 201410623878A CN 104297808 A CN104297808 A CN 104297808A
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Abstract
The invention discloses a rapid inverse-scattering three-dimensional flying spot scanner which comprises a ray source, a detector, a data processing module and an action mechanism, wherein the data processing module is connected with the detector; the action mechanism drives the ray source to perform rotating swing on the horizontal plane; a fan-shaped collimator is mounted at a ray light outlet of the ray source; a scanning barrel is arranged outside the ray source; a plurality of narrow slits for allowing rays to pass through are formed in the scanning barrel; the scanning barrel is connected with the motor shaft of a rotating motor; the detector comprises a carrier and a plurality of photon counters mounted on the surface of the carrier; a beam-shaped collimator is arranged on the lateral surface of the carrier; the narrow slits are linear slits which are parallel to one another; the fan-shaped surface of the fan-shaped collimator is perpendicular to the narrow slits. The rapid inverse-scattering three-dimensional flying spot scanner adopts the small-focus large-angle ray source, enables vertical scanning on a human body to become possible, adopts a mode that the vertical scanning manner is combined with the horizontal reciprocating motion, realizes simple mechanical motion, reduces energy consumption of equipment and improves working efficiency.
Description
Technical field
The present invention relates to social safety inspection and safety precaution technical field of measuring equipment, particularly relate to the three-dimensional flying spot scanner of a kind of backscattering fast.
Background technology
Along with densely populated place such as bus station, railway station, airports and the safety case in the large place of mobility receives increasing concern, precisely, efficiently human body safety check equipment become the important means avoiding the attack of terrorism.Existing human body safety check detection means has hand-held metal detector, metallic door detector, backward scattering human body detection, millimeter wave human body detection, THz human body detection, wherein hand-held metal detector and metallic door detector can only detect the metal that human body carries, to nonmetal helpless; Millimeter wave human body detection and THz human body detection resolving power too low, cannot accomplish that human body precisely detects; Backward scattering human body detection achieves accurate detection on the basis using micro-dosage Detection Techniques.Such as, a kind of like this Backscattering X-ray scanner based on flying spot technology is disclosed in the instructions of CN1207558C Chinese invention patent disclosed in 31 days March in 2004, this scanner adopts the mode of transversal scanning to human body, the mechanism that flying spot beam generation apparatus can be made to increase by pre-set velocity by one, realizes the scanning from foot to the crown to human body.This scanner has the features such as radiation is little, efficiency is high, structure is simple, but owing to being the mode of transversal scanning, longitudinal size is obviously greater than to the human body of lateral dimension, complete once the time that complete scanning needs about 8 to 12 seconds, the place such as airport, railway station larger for flow of the people is inapplicable, so need a kind of accurate, efficient novel human-body scanner.
Summary of the invention
The technical problem to be solved in the present invention is: provide that a kind of scan efficiency is high, the three-dimensional flying spot scanner of the simple backscattering fast of structure.
The technical scheme that the present invention takes for the technical matters existed in solution known technology is:
The three-dimensional flying spot scanner of a kind of backscattering fast, the data processing module comprising radiographic source, detector and be connected with described detector; It is characterized in that: also comprise the actuating mechanism driving described radiographic source to realize rotary oscillation in the horizontal plane, at described radiogenic ray light-emitting window place, fan-shaped collimating apparatus is installed; Be outside equipped with scanning drum at described radiographic source, described scanning drum be provided with many slits passed through for ray; Described scanning drum is connected with the motor shaft of electric rotating machine; Described detector comprises carrier and is installed on multiple photon counters of described carrier surface, is provided with bundle shape collimating apparatus in the side of described carrier; Described many slits are the linear-seam be parallel to each other to each other; Sector and the slit of described fan-shaped collimating apparatus are perpendicular.
As optimal technical scheme, the present invention additionally uses following technical characteristic:
Described actuating mechanism comprises rotation platform, is connected with oscillating motor at the lower surface of described rotation platform, and be installed with scanning drum fixed head at the upper surface of described rotation platform, described electric rotating machine is fixedly installed on described scanning drum fixed head.
Further: the quantitative range of described slit is 1-6 bar.
Further: the quantity of described slit is 4.
Further: 4 slits are uniformly distributed in scanning drum circumferentially.
Further: the fan angle range of described fan-shaped collimating apparatus is 80 ° ~ 100 °; The rotating speed of described electric rotating machine is 900 ~ 1500r/min.
Further: described data processing module is the computing machine with image processing function.
The advantage that the present invention has and good effect are:
Because traditional flying spot human body scanner is subject to adopted radiogenic technical limitation, export and mostly be pencil-beam, subtended angle is little, about being generally 50 ° of angles, the subtended angle of flying-spot scanner is too little, in limited distance can inswept scope just very little, the transversal scanning requirement to human body can only be met.Adopt technique scheme of the present invention, its ray emergence angle is flat bundles, export subtended angle reach more than 90 °, like this in limited distance institute energy inswept scope just increase.Meanwhile, the oscillatory scanning of horizontal direction combines with the scanning on vertical direction by the present invention, can improve the efficiency of scanning well, shown by test of many times data, scanning height is the time that the needed by human body of 1.75m is wanted is 2 seconds, and compared with traditional 8 seconds, efficiency improves 4 times.
The present invention adopts above-mentioned physical construction, because fan beam has larger subtended angle, compared with therefore lining by line scan with tradition only employing level, decreases the motion of vertical direction, so physical construction of the present invention is simpler, failure rate is lower.
Accompanying drawing explanation
Fig. 1 is left shaft side figure of the present invention;
Fig. 2 is right shaft side figure of the present invention;
Fig. 3 is left side view of the present invention;
Fig. 4 is partial duty schematic diagram of the present invention, is mainly used in showing the position that detection comes from object to be detected;
Fig. 5 is circuit structure block diagram of the present invention.
Wherein: 1, scan drum fixed head, 2, scanning drum, 3, fan-shaped collimating apparatus, 4, radiographic source, 5, rotation platform, 6, radiographic source fixed head, 7, detector, 8, tested object, 9, oscillating motor, 10, shape collimating apparatus is restrainted, 11, electric rotating machine, the 12, first flange, the 13, second flange.
Embodiment
For content of the present invention, Characteristic can be understood further, especially exemplified by following examples, and accompanying drawing is coordinated to be described in detail as follows:
Refer to Fig. 1 to Fig. 5, the three-dimensional flying spot scanner of a kind of backscattering fast, comprise radiographic source 4, detector 7, the data processing module be connected with described detector, drive described radiographic source 4 to realize the actuating mechanism of rotary oscillation in the horizontal plane, at the ray light-emitting window place of described radiographic source 4, fan-shaped collimating apparatus 3 is installed; Be outside equipped with scanning drum 2 at described radiographic source 4, described scanning drum 2 be provided with many slits passed through for ray; Described scanning drum 2 is connected with the motor shaft of electric rotating machine 11; Described detector 7 comprises carrier and is installed on multiple photon counters of described carrier surface, is provided with bundle shape collimating apparatus 10 in the side of described carrier; Described many slits are the linear-seam be parallel to each other to each other; Sector and the slit of described fan-shaped collimating apparatus 3 are perpendicular.
Principle of work of the present invention is: the ray that radiographic source 4 produces forms the light beam of a sector after the fan-shaped collimating apparatus 3 at ray light-emitting window place, now, scanning drum 2 High Rotation Speed under the drive of electric rotating machine 11, thus change the light beam of sector into discrete detection light, refer to Fig. 4, detection illumination is penetrated, on tested object 8, backscattering is occurred.Refer to Fig. 5, backscattering light beam irradiation, on detector 7, is received by multiple photon counter, and then the signal detected is sent to coincidence circuit by above-mentioned multiple photon counter respectively, and detection signal is sent to data processing module by coincidence circuit subsequently; Data processing module is the processor with image processing function.Because coincidence circuit and data processing module are prior art, therefore its concrete structure and principle of work are not repeated herein.
As optimal technical scheme, the present invention additionally uses following technical characteristic:
Described actuating mechanism comprises rotation platform 5, oscillating motor 9 is connected with at the lower surface of described rotation platform, be installed with scanning drum fixed head 1 at the upper surface of described rotation platform 5, described electric rotating machine 11 is fixedly installed on described scanning drum fixed head 1 by the first flange 12.Oscillating motor 9 is installed on the lower surface of rotation platform 5 by the second flange 13.
Further: the quantitative range of described slit is 1-6 bar.
Further: the quantity of described slit is 4.
Further: 4 slits are uniformly distributed in scanning drum circumferentially.
Further: the fan angle range of described fan-shaped collimating apparatus is 80 ° ~ 100 °; The rotating speed of described electric rotating machine is 900 ~ 1500r/min.
Further: described data processing module is the computing machine with image processing function.
The present invention adopts little focus, wide-angle radiographic source, makes vertical scanning human body become possibility; The mode adopting vertical scanning mode to combine with horizontal direction to-and-fro movement, achieves simple and mechanical motion, reduces the energy consumption of equipment; Achieve when tested person or thing do not do relative motion simultaneously and achieve detection scanning action, avoid because personnel move the numerous inconvenience brought; The built-in photon counter of detector, realizes multiple signals and adds and function, substantially increases ray infant laser signal detection precision; Detector is vertical placement, adds the spatial area of detection backscattering ray, also improves ray infant laser signal detection precision simultaneously.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.
Claims (7)
1. the three-dimensional flying spot scanner of quick backscattering, the data processing module comprising radiographic source, detector and be connected with described detector; It is characterized in that: also comprise the actuating mechanism driving described radiographic source to realize rotary oscillation in the horizontal plane, at described radiogenic ray light-emitting window place, fan-shaped collimating apparatus is installed; Be outside equipped with scanning drum at described radiographic source, described scanning drum be provided with many slits passed through for ray; Described scanning drum is connected with the motor shaft of electric rotating machine; Described detector comprises carrier and is installed on multiple photon counters of described carrier surface, is provided with bundle shape collimating apparatus in the side of described carrier; Described many slits are the linear-seam be parallel to each other to each other; Sector and the slit of described fan-shaped collimating apparatus are perpendicular.
2. the three-dimensional flying spot scanner of quick backscattering according to claim 1, it is characterized in that: described actuating mechanism comprises rotation platform, oscillating motor is connected with at the lower surface of described rotation platform, be installed with scanning drum fixed head at the upper surface of described rotation platform, described electric rotating machine is fixedly installed on described scanning drum fixed head.
3. the three-dimensional flying spot scanner of quick backscattering according to claim 2, is characterized in that: the quantitative range of described slit is 1-6 bar.
4. the three-dimensional flying spot scanner of quick backscattering according to claim 3, is characterized in that: the quantity of described slit is 4.
5. the three-dimensional flying spot scanner of quick backscattering according to claim 4, is characterized in that: 4 slits are uniformly distributed in scanning drum circumferentially.
6. the three-dimensional flying spot scanner of quick backscattering according to claim 5, is characterized in that: the fan angle range of described fan-shaped collimating apparatus is 80 ° ~ 100 °; The rotating speed of described electric rotating machine is 900 ~ 1500r/min.
7. the three-dimensional flying spot scanner of the quick backscattering according to any one of claim 1-6, is characterized in that: described data processing module is the computing machine with image processing function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410623878.0A CN104297808A (en) | 2014-11-07 | 2014-11-07 | Rapid inverse-scattering three-dimensional flying spot scanner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410623878.0A CN104297808A (en) | 2014-11-07 | 2014-11-07 | Rapid inverse-scattering three-dimensional flying spot scanner |
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| CN201410623878.0A Pending CN104297808A (en) | 2014-11-07 | 2014-11-07 | Rapid inverse-scattering three-dimensional flying spot scanner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490478A (en) * | 2018-03-30 | 2018-09-04 | 大连交通大学 | A kind of fast silk scanning means of beam current measurement |
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| CN202141684U (en) * | 2011-05-24 | 2012-02-08 | 上海世鹏实验室科技发展有限公司 | Scanning device for detecting body and belonging safety |
| CN202275162U (en) * | 2011-10-20 | 2012-06-13 | 天津重方科技有限公司 | Novel flying spot human body scanner |
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| CN102901741A (en) * | 2012-09-28 | 2013-01-30 | 貊梁 | X-ray flying-spot scanning generator |
| CN203000964U (en) * | 2012-12-27 | 2013-06-19 | 同方威视技术股份有限公司 | Check system |
| CN104133251A (en) * | 2014-07-04 | 2014-11-05 | 清华大学 | Movable-type backscattering imaging safety inspection device and method |
| CN204228976U (en) * | 2014-11-07 | 2015-03-25 | 天津重方科技有限公司 | The three-dimensional flying spot scanner of a kind of backscattering fast |
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2014
- 2014-11-07 CN CN201410623878.0A patent/CN104297808A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5260982A (en) * | 1991-05-31 | 1993-11-09 | Kabushiki Kaisha Toshiba | Scattered radiation imaging apparatus |
| CN1485611A (en) * | 2003-08-22 | 2004-03-31 | 貊大卫 | Backscattering type X-ray scanner |
| CN202141684U (en) * | 2011-05-24 | 2012-02-08 | 上海世鹏实验室科技发展有限公司 | Scanning device for detecting body and belonging safety |
| CN202275162U (en) * | 2011-10-20 | 2012-06-13 | 天津重方科技有限公司 | Novel flying spot human body scanner |
| CN102707324A (en) * | 2012-05-21 | 2012-10-03 | 貊梁 | Backscatter and transmission combined safety detector of X rays |
| CN102901741A (en) * | 2012-09-28 | 2013-01-30 | 貊梁 | X-ray flying-spot scanning generator |
| CN203000964U (en) * | 2012-12-27 | 2013-06-19 | 同方威视技术股份有限公司 | Check system |
| CN104133251A (en) * | 2014-07-04 | 2014-11-05 | 清华大学 | Movable-type backscattering imaging safety inspection device and method |
| CN204228976U (en) * | 2014-11-07 | 2015-03-25 | 天津重方科技有限公司 | The three-dimensional flying spot scanner of a kind of backscattering fast |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490478A (en) * | 2018-03-30 | 2018-09-04 | 大连交通大学 | A kind of fast silk scanning means of beam current measurement |
| CN108490478B (en) * | 2018-03-30 | 2023-12-08 | 大连交通大学 | Beam measuring fast wire scanning device |
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