CN201191276Y - Apparatus for detecting contraband article in air-freight service container - Google Patents
Apparatus for detecting contraband article in air-freight service container Download PDFInfo
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- CN201191276Y CN201191276Y CNU2007201729917U CN200720172991U CN201191276Y CN 201191276 Y CN201191276 Y CN 201191276Y CN U2007201729917 U CNU2007201729917 U CN U2007201729917U CN 200720172991 U CN200720172991 U CN 200720172991U CN 201191276 Y CN201191276 Y CN 201191276Y
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- detector
- radiation source
- inspection
- hoistable platform
- turntable
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Abstract
The utility model provides a contraband detector for air cargo containers, which comprises a rotary platform and a scanning system. The scanning system is composed of a radiation source, a detector, a radiation source mounting structure for mounting the radiation source and a detector mounting structure for mounting the detector, wherein the radiation source mounting structure and the detector mounting structure respectively comprise at least one vertical post component, the radiation source and the detector are respectively arranged on the vertical posts and allowed to synchronous elevate along the vertical posts. By utilizing the vertical post components to stably mount the radiation source and the detector, and according to combinations of various modes of motion of the rotary platform and the scanning system, the contraband detector has stable structure, convenient mounting and small space occupation, and can scan an object-to-be-detect via various scanning modes, further can detect air cargo containers with length or width over 2 meters, and can realize a higher pass rate of objects-to-be-detect.
Description
Technical field
The utility model relates to the cargo safety inspection field, more particularly, relates to a kind of device of checking prohibited items in the aviation goods.
Background technology
In aviation goods (for example air container) inspection field, still be transmitted as main test mode at present with hand inspection and X-ray machine (can only by small-sized air container).Also there is use CT (computed tomography-computed tomography) technology to carry out the device of the examination of cargo, for example the product of emerging company of Smith company (it adopts X-ray machine) and Holley (it adopts radioactive source).Because the penetration capacity of X-ray machine is lower, the strictness control of radioactive source in use and management makes this two series products that a lot of limitations be arranged in the use.Particularly, these install the horizontal through type scanning of all employings and carry out the CT imaging inspection, and promptly the inspected object level is passed through, and scanning system is rotated around the path of passing through of this inspected object, and this makes that the goods percent of pass of these CT examination systems is lower.And this CT examination system is subjected to the strictness restriction of physical dimension and penetration capacity, therefore can not check the air container of big specification.For example, conventional device all can not be checked each air container more than 2 meters of length and width.Therefore and above-mentioned horizontal through type scan mode need take equal floor area in the goods passage left and right sides, and to occupy the space bigger for such device.
In addition, multiple radiant image mode has been proposed in the prior art, for example perspective imaging, various visual angles imaging and CT imaging etc., the different scanning mode that these different imaging modes carry out goods corresponding to scanning system usually.Above-mentioned existing testing fixture only can be realized wherein a kind of scan mode usually, thereby has limited the selection of imaging mode.But, in examination of cargo process, needing identical goods is carried out the scanning imagery of different modes sometimes, existing testing fixture can not address that need.
The utility model content
The purpose of this utility model is to solve at least one defective in the above-mentioned prior art defective.
To achieve these goals, the utility model provides a kind of device of checking prohibited items in the airfreight container, comprising:
Turntable, this turntable is in the object detection position, is used to carry tested object and drives this tested object rotate;
Scanning system, this scanning system is arranged in around the turntable, is used for tested object is scanned and obtain imaging data, and this scanning system comprises:
Radiation source and detector;
Be used to install the radiation source mounting structure of described radiation source and be used to install institute
State the detector mounting structure of detector,
Wherein, described radiation source mounting structure and described detector mounting structure comprise at least one columns assemblies respectively, and described radiation source and detector are installed in respectively on this columns assemblies, and allow to carry out synchronization lifting along described columns assemblies.
In device of the present utility model, utilize columns assemblies with radiation source and the stable installation of detector, and permission radiation source and detector synchronization lifting on columns assemblies separately, turntable can carry tested object and drive this tested object and rotate in addition, like this, the combination of the Different Exercise Mode by turntable and scanning system, device of the present utility model can scan tested object with multiple scan mode.And the utility model is installed radiation source and detector by columns assemblies, and its Stability Analysis of Structures is easy for installation, occupies idle little.Device of the present utility model can control general and/or the wide air container that reaches more than 2 meters.And the utility model device can be realized the higher percent of pass of tested object.
Description of drawings
Fig. 1 is the side view of the utility model device among the embodiment.
Fig. 2 be embodiment illustrated in fig. 1 in the vertical view of this device.
Fig. 3 be embodiment illustrated in fig. 1 in the left view of this device.
Embodiment
Referring to Fig. 1 to Fig. 3, it shows an embodiment who is used for checking the device of airfreight container prohibited items of the present utility model.As shown in the figure, this device comprises turntable 11, and this turntable is in the object detection position, is used to carry tested object (not shown, as air container) and can drives this tested object rotate.This device also comprises object induction system (not shown), is used for along continuous straight runs and is delivered to tested object on the turntable and after detection is finished tested object is carried and leave turntable, and this is well-known to those skilled in the art.Object induction system and this turntable can be called as transfer system together.This turntable 11 is on this object transporting path.In one embodiment, this turntable 11 is a composite revolving conveying workstation.Put down in writing a kind of like this composite revolving conveying workstation among the applicant's the Chinese patent application NO.200610169797.3, the document has been incorporated herein by reference in full at this.This composite revolving worktable can be carried this tested object by scan channel, can support and drive this tested object again and turn round in scan channel.Like this, in the time will being rotated scanning, just allowing scanning system (hereinafter will describe in detail) not rotate, but self rotate by this tested object around this tested object to tested object.
This device also comprises the turntable driving/control subsystem (not shown) that is used for turntable, and this turntable driving/control subsystem drives and control the rotation of turntable, makes this turntable can rotate around it axis and rotates or turn to any predetermined angular position continuously.The servo controller that this turntable driving/control subsystem generally includes motor and is used for this motor.
This device also comprises scanning system, and this scanning system is arranged in around the turntable, is used for tested object is scanned and obtain imaging data.As shown in the figure, this scanning system comprises radiation source 6 and the detector 17 that is arranged in turntable 11 both sides, this radiation source 6 and detector 17 can vertically same moved further, guarantee that the horizontal rays face 16 that is come out by radiation source 6 is on the same surface level all the time with plane, detector 17 place.This radiation source 6 sends controlled X ray or gamma ray, can be electron linear accelerator, isotope source or X-ray machine.This detector 17 is responsible for and will be converted into electric signal by the ray of tested object, can be solid probe, gas detector; Can use one or more straight lines or camber line array on the version, also can use high low energy detector.This scanning system also can comprise data acquisition unit, is responsible for the electric signal of detector is converted into digital signal and is sent to main control computer by bus or Ethernet.This detector 17 itself can have this data acquisition unit.
This scanning system comprises also and is used to the detector mounting structure the radiation source mounting structure of radiation source 6 being installed and being used to install detector 17 that this radiation source mounting structure and detector mounting structure are arranged on the both sides of turntable 11.This radiation source mounting structure or this detector mounting structure comprise one or more columns assemblies.In one embodiment, radiation source mounting structure and detector mounting structure comprise one or more columns assemblies respectively.In one embodiment, each columns assemblies has essentially identical structure.In Fig. 1 to Fig. 3, the radiation source mounting structure preferably includes single columns assemblies, and the detector mounting structure preferably includes two columns assemblies, thereby constitutes a kind of scan architecture of three column forms.Three pillar constructions are like this guaranteeing to have reduced floor area to greatest extent under the stable situation of installing of detector and radiation source.In addition, in order further to reduce floor area, the detector that is arranged on two columns assemblies is preferably the planar detector array, and the detector array of plane form is littler than the floor area of the detector array of curved surface form.
In Fig. 1 to Fig. 3, this columns assemblies comprises the column 8,1 or 10 that vertically is provided with.Wherein, for the radiation source mounting structure, its columns assemblies comprises column 8; For the detector mounting structure, two columns assemblies that it had comprise column 1 and column 10 respectively.On each column, along the elevating mechanism that the column bearing of trend is provided with, this elevating mechanism is by this column supporting, and radiation source or detector then are installed on this elevating mechanism.This elevating mechanism comprises roller screw 12 and the hoistable platform 7,2 or 9 that is provided with along column, wherein, in Fig. 1 to Fig. 3, represent hoistable platform in the columns assemblies in the radiation source mounting structure with label 7, represent hoistable platform in two columns assemblies in the detector mounting structure respectively with label 2 and 9.This hoistable platform 7,2 or 9 is installed on the leading screw 12 and with it to become to be threaded, and radiation source 6 or detector 17 correspondingly are fixedly mounted on this hoistable platform.Like this, when leading screw 12 rotation, hoistable platform 7,2 or 9 interacts and can do elevating movement along leading screw by the screw thread with leading screw.In one embodiment, hoistable platform can become to be threaded with leading screw by nut, and wherein, this nut is connected with threads of lead screw, and hoistable platform is fixedlyed connected with nut.In another embodiment, this hoistable platform self can comprise that one runs through its screw channel, and this screw channel is connected with threads of lead screw.This elevating mechanism also can comprise at least one guide rail that is provided with along column, and hoistable platform can slide along this guide rail, so that guide the elevating movement of this hoistable platform.As shown in the figure, this elevating mechanism preferably includes two guide rails 13 that are located at leading screw 12 both sides.In one embodiment, hoistable platform is slidingly connected by slide block and guide rail, and wherein, this slide block and guide rail are slidingly connected, and hoistable platform is fixedlyed connected with this slide block.In another embodiment, this hoistable platform can comprise the passage that runs through it, and this guide rail extends through this passage.
When detector mounting structure or radiation source mounting structure comprised a plurality of columns assemblies, in order to realize the structural stability between the columns assemblies, this mounting structure also can comprise the tie-beam that is connected between every pair of adjacent upright posts.As shown in Figure 1 to Figure 3, in the detector mounting structure, between column 1 and 10, be connected with tie-beam 3.
When the detector mounting structure comprises a plurality of columns assemblies, this mounting structure also can comprise and is connected every pair of crossbeam between the adjacent hoistable platform, wherein, detector (being preferably the planar detector array) is fixedly mounted on the crossbeam, and is fixedly installed to hoistable platform via this crossbeam.As shown in Figure 1 to Figure 3, in this detector mounting structure, crossbeam 4 is connected between hoistable platform 2 and 9, and detector 17 is connected to this crossbeam 4.Because the rigidity characteristics of physical construction, in order to reduce the requirement of manufacturing accuracy, especially installation accuracy to this rigid structure, this detector crossbeam 4 has adopted an end to be fixedly hinged, and the mounting means of other end elastic coupling is connected respectively to the two ends of crossbeam 4 on the tie point of detector hoistable platform 2,9.Make that detector crossbeam 4 can the normal synchronized operation in the scanning operational process.
In device of the present utility model, also comprise turntable driving/control subsystem, this turntable driving/control subsystem drives and control radiation source and detector same moved further vertically, makes radiation source and detector can vertically move or move to arbitrarily predetermined vertical position continuously.This turntable driving/control subsystem comprises: servo drive motor 5 is used for driving the leading screw 12 of each columns assemblies; And servo isochronous controller (not shown), be used to control the synchronous operation of each servo drive motor 5.When device of the present utility model was three column frameworks, this servo isochronous controller was three servo isochronous controllers.
Device of the present utility model also can comprise main control computer.For the control section in turntable driving/control subsystem and the turntable driving/control subsystem, can realize that in the specific implementation this single control system for example can be realized by the special software in this main control computer and this main control computer by single control system.This active computing machine also can provide a human-computer interaction interface, so that control the work of this device according to operator command, and carries out imaging and shows according to imaging data.For example, the operator can import some parameters to this turntable driving/control subsystem and turntable driving/control subsystem by this human-computer interaction interface, as the continuous rotational angle of turntable or the continuous movable length or the predetermined vertical position of predetermined angular position, radiation source and detector, or the like.Like this, the operator just can control this device carries out different modes to tested object scanning.And the imaging data that this main control computer can utilize scanning system to obtain carries out imaging according to certain data processing algorithm.
As previously mentioned, device of the present utility model can be checked tested object with multiple mode of operation.These patterns for example can comprise:
(1) perspective plane imaging pattern, wherein, turntable drives at least one predetermined angular position place with tested object, when described testee is in each predetermined angular position place, the synchronous scanning vertically of radiation source and detector once, obtain the perspective image data at each predetermined angular position place, the 2 d fluoroscopy images when this device forms this tested object respectively and is in each predetermined angular position place according to the perspective image data at each predetermined angular position place;
(2) multi-view angle three-dimensional imaging pattern, wherein, turntable drives described tested object to a plurality of predetermined angular position place, when this testee is in each predetermined angular position place, the synchronous scanning vertically of this radiation source and detector once, obtain the perspective image data at each predetermined angular position place, this device reconstructs the 3-D view of this tested object according to the perspective image data at each predetermined angular position place; Wherein, the used algorithm of this multi-view angle three-dimensional imaging pattern for example can be referring to the applicant's Chinese patent application No.200610076574.2, and the document is incorporated herein by reference in full at this.
(3) CT plane (section or tomography) imaging pattern, wherein, this radiation source and detector are positioned at least one predetermined vertical position place, when described radiation source and detector are in each predetermined vertical position place, this turntable drives described tested object and rotates continuously, obtain the CT data for projection at each predetermined vertical position place, this device reconstructs two-dimensional ct image at each this tested object of predetermined vertical position place respectively according to the CT data for projection at each predetermined vertical position place;
(4) CT spiral scan imaging pattern, wherein, this radiation source and detector are along vertically moving to the second predetermined vertical position from the first predetermined vertical position, simultaneously, this turntable drives described tested object and rotates continuously, thereby this tested object is carried out spiral scan, obtain the CT spiral scan data for projection of this tested object between the first predetermined vertical position and the second predetermined vertical position, described device reconstructs first three-dimension disclocation (volume data) image of being scheduled between the vertical position and the second predetermined vertical position that is in of this tested object according to this CT spiral scan data for projection.
Above these patterns be exemplary, and non exhaustive.Notice that this turntable can rotate or turn to any predetermined angular position continuously, and scanning system (comprising radiation source and detector) can vertically move or move to arbitrarily predetermined vertical position continuously.Those skilled in the art can pass through the various combination of the mode of motion of research the utility model device intermediate station and scanning system, thereby obtain the various possible mode of operation of various the utility model devices.The operator can choose one or more patterns tested object is checked from various possible mode of operations.
Adopt device of the present utility model, can carry out fast detecting to big-and-middle-sized goods such as standard-sized air containers, provide the radiation image of thing shape and the Density Distribution of freighting in the reflection aviation case, as perspective plane image, CT slice plane image and three-dimensional data image (utilizing various visual angles formation method or spiral CT method).Whether the supervisory personnel is by the characteristic information of the tested object analyzing this device and provide, finally can judge goods fast and conform to and have or not contraband goods with declaring, thereby realize accurate and effective safety inspection.
An exemplary operation of the utility model device is described below:
Step (1): tested object is sent to turntable 11.
In step (2)～(4), utilize device of the present utility model tested object to be checked with the perspective plane imaging pattern.
Step (2): turntable 11 is static, and radiation source 6 and detector 17 in the vertical directions synchronously carry out single pass, obtains the perspective image data of this tested object in current angle position.
Step (3): turntable 11 revolves and turn 90 degrees, and repeats a step (2), obtains another perspective image data.
Step (4): the fluoroscopy images in step (2) and (3) is presented on the computer screen, analyzes by these two fluoroscopy images, change step as discovery suspicion zone by the operator
(8)。
Utilize device of the present utility model tested object to be checked in step (5)～(7) with the multi-view angle three-dimensional imaging pattern.
Step (5): less angle of turntable 11 rotations, for example an angle between 10 degree～30 degree repeats a step (2).
Step (6): repeat ten steps (5).
Step (7): by above 12 width of cloth perspective image data that obtain, reconstruct the 3-D view of object, then forward step (8) to, otherwise object is by detecting as discovery suspicion zone by data processing.
In step (8), utilize device of the present utility model the suspicion zone to be scanned with CT plane (section or tomography) imaging pattern or CT spiral scan imaging pattern.Particularly, radiation source 6 and detector 17 are navigated to place, suspicion zone height, turntable 11 drives object and rotates continuously.For CT plane (section or tomography) imaging pattern, radiation source 6 and detector 17 keep motionless, obtain the CT data for projection of current location, and reconstruct two-dimensional ct image by data processing.For CT spiral scan imaging pattern, radiation source 6 and detector 17 in the vertical directions vertically scan in the scope in suspicion zone, thereby obtain the CT data for projection in suspicion zone, and reconstruct three-dimension disclocation volume data image by data processing.
Step (9): the operator provides final judgement by faultage image.
Claims (19)
1. device of checking prohibited items in the airfreight container comprises:
Turntable, this turntable is in the object detection position, is used to carry tested object and drives this tested object rotate;
Scanning system, this scanning system is arranged in around the turntable, is used for tested object is scanned and obtain imaging data, and this scanning system comprises:
Radiation source and detector;
Be used to install the radiation source mounting structure of described radiation source and be used to install institute
State the detector mounting structure of detector,
It is characterized in that described radiation source mounting structure and described detector mounting structure comprise at least one columns assemblies respectively, described radiation source and detector are installed in respectively on this columns assemblies, and allow to carry out synchronization lifting along described columns assemblies.
2. the device of prohibited items is characterized in that in the inspection airfreight container according to claim 1, and described turntable is a composite revolving conveying workstation.
3. the device of prohibited items in the inspection airfreight container according to claim 1 is characterized in that described columns assemblies comprises:
The column of She Zhiing vertically;
Along the elevating mechanism that column is provided with, this elevating mechanism is supported by described column, and described radiation source or detector are installed on this elevating mechanism.
4. the device of prohibited items in the inspection airfreight container according to claim 3 is characterized in that described elevating mechanism comprises:
Leading screw along the column setting;
Hoistable platform, this hoistable platform are installed on the described leading screw and with described leading screw to become to be threaded, and described radiation source or detector are fixedly mounted on this hoistable platform;
Wherein, when leading screw rotated, described hoistable platform interacted by the screw thread with leading screw and can do elevating movement along leading screw.
5. the device of prohibited items in the inspection airfreight container according to claim 4, it is characterized in that, described hoistable platform becomes to be threaded with described leading screw by a nut, and described nut is connected with described threads of lead screw, and described hoistable platform is fixedlyed connected with described nut; Perhaps
Described hoistable platform comprises that one runs through its screw channel, and this screw channel is connected with described threads of lead screw.
6. according to the device of prohibited items in claim 3 or the 4 described inspection airfreight containers, it is characterized in that, described elevating mechanism also comprises at least one guide rail that is provided with along column, and described hoistable platform can slide along described guide rail, so that guide the elevating movement of described hoistable platform.
7. the device of prohibited items in the inspection airfreight container according to claim 6, it is characterized in that, described hoistable platform is slidingly connected by slide block and described guide rail, and described slide block and described guide rail are slidingly connected, and described hoistable platform is fixedlyed connected with described slide block; Perhaps
Described hoistable platform comprises the passage that runs through it, so that hold described guide rail.
8. the device of prohibited items is characterized in that in the inspection airfreight container according to claim 1, and described radiation source mounting structure comprises single columns assemblies.
9. according to the device of prohibited items in claim 1 or the 8 described inspection airfreight containers, it is characterized in that described detector mounting structure comprises a plurality of columns assemblies.
10. the device of prohibited items is characterized in that in the inspection airfreight container according to claim 9, and described detector mounting structure also comprises in the many root posts that are connected in described a plurality of columns assemblies the tie-beam between every pair of adjacent upright posts.
11. the device of prohibited items in the inspection airfreight container according to claim 9, it is characterized in that, described detector mounting structure also comprises the crossbeam between the adjacent hoistable platform in a plurality of hoistable platforms that are connected in described a plurality of columns assemblies, described detector is fixedly mounted on the described crossbeam, and fixedly mounts on the described hoistable platform via described crossbeam.
12. the device of prohibited items in the inspection airfreight container according to claim 11, it is characterized in that, one end of described crossbeam is fixedly hinged on one of described adjacent hoistable platform, on other end resilient connection another in another described adjacent hoistable platform.
13. the device of prohibited items is characterized in that in the inspection airfreight container according to claim 9, described detector mounting structure comprises two columns assemblies.
14. the device of prohibited items in the inspection airfreight container according to claim 1, it is characterized in that, described device also comprises the object induction system, is used for along continuous straight runs and is delivered to tested object on the turntable and after detection is finished tested object is carried and leave turntable.
15. the device of prohibited items in the inspection airfreight container according to claim 1, it is characterized in that, also comprise turntable driving/control subsystem, this turntable driving/control subsystem drives and controls the rotation of turntable, makes this turntable can rotate around it axis and rotates or turn to any predetermined angular position continuously.
16. device according to prohibited items in claim 3 or the 15 described inspection airfreight containers, it is characterized in that, also comprise turntable driving/control subsystem, this turntable driving/control subsystem drives and controls described radiation source and detector same moved further vertically, makes described radiation source and detector can vertically move or move to arbitrarily predetermined vertical position continuously.
17. the device of prohibited items in the inspection airfreight container according to claim 16 is characterized in that described turntable driving/control subsystem comprises:
Servo drive motor is used for driving the leading screw of each columns assemblies;
Servo isochronous controller is used to control each servo drive motor synchronous operation.
18. the device of prohibited items in the inspection airfreight container according to claim 1, it is characterized in that also comprise main control computer, it provides a human-computer interaction interface, so that control the work of this device, and carry out imaging and show according to imaging data according to operator command.
19. the device of prohibited items is characterized in that in the inspection airfreight container according to claim 1, described detector is the detector array of plane form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201729917U CN201191276Y (en) | 2007-09-06 | 2007-09-06 | Apparatus for detecting contraband article in air-freight service container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201729917U CN201191276Y (en) | 2007-09-06 | 2007-09-06 | Apparatus for detecting contraband article in air-freight service container |
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| Publication Number | Publication Date |
|---|---|
| CN201191276Y true CN201191276Y (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201729917U Expired - Lifetime CN201191276Y (en) | 2007-09-06 | 2007-09-06 | Apparatus for detecting contraband article in air-freight service container |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540267A (en) * | 2010-12-31 | 2012-07-04 | 同方威视技术股份有限公司 | Zero search interlocking method for electric synchronization of line scanning device |
| CN104444944A (en) * | 2014-12-30 | 2015-03-25 | 合肥美亚光电技术股份有限公司 | Radiation source lifting mechanism and X-ray foreign matter detection device with same |
| CN109187592A (en) * | 2018-08-03 | 2019-01-11 | 山东建筑大学 | Wood internal structure imaging system |
| CN113534274A (en) * | 2021-06-02 | 2021-10-22 | 许昌瑞示电子科技有限公司 | Ray detection system and vehicle attitude adjusting device |
-
2007
- 2007-09-06 CN CNU2007201729917U patent/CN201191276Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540267A (en) * | 2010-12-31 | 2012-07-04 | 同方威视技术股份有限公司 | Zero search interlocking method for electric synchronization of line scanning device |
| CN102540267B (en) * | 2010-12-31 | 2013-11-06 | 同方威视技术股份有限公司 | Zero search interlocking method for electric synchronization of line scanning device |
| CN104444944A (en) * | 2014-12-30 | 2015-03-25 | 合肥美亚光电技术股份有限公司 | Radiation source lifting mechanism and X-ray foreign matter detection device with same |
| CN109187592A (en) * | 2018-08-03 | 2019-01-11 | 山东建筑大学 | Wood internal structure imaging system |
| CN109187592B (en) * | 2018-08-03 | 2022-01-11 | 山东建筑大学 | Imaging system for internal structure of wood |
| CN113534274A (en) * | 2021-06-02 | 2021-10-22 | 许昌瑞示电子科技有限公司 | Ray detection system and vehicle attitude adjusting device |
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