CN201540263U - Object checking system, DR imaging device and CT imaging device - Google Patents
Object checking system, DR imaging device and CT imaging device Download PDFInfo
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- CN201540263U CN201540263U CN 200920109052 CN200920109052U CN201540263U CN 201540263 U CN201540263 U CN 201540263U CN 200920109052 CN200920109052 CN 200920109052 CN 200920109052 U CN200920109052 U CN 200920109052U CN 201540263 U CN201540263 U CN 201540263U
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Abstract
The utility model relates to an object checking system, which is used for checking objects conveyed along a conveying path. The object checking system comprises a DR imaging device and a CT imaging device which is disposed on the upstream or downstream of the DR imaging device along the conveying path, average speed of objects passing through the DR imaging device is larger than that of the objects passing through the CT imaging device. The utility model also relates to the DR imaging device, which is used for scanning the objects conveyed along the conveying path to form images of scanned objects and comprises a DR data acquisition trigger module, and during a process of the objects passing through the DR imaging device, the DR data acquisition trigger module triggers the DR imaging device to perform data acquisition when the objects pass through each preset distance A along the conveying path.
Description
Technical field
The utility model relates to commodity inspection system, and wherein this commodity inspection system comprises CT imaging device and DR imaging device.The utility model also relates to a kind of DR imaging device and a kind of CT imaging device.
Background technology
In numerous explosive inspection means, CT type explosive check system is checked means because its lower rate of false alarm and rate of failing to report have become block explosive main in the aviation safety check field.But traditional CT small product size is huge, costs an arm and a leg, and its development is subjected to bigger restriction.
In recent years, proposed improved CT type explosive check system, its profile is small and exquisite, and price is lower.But than traditional CT type EDS, it but reduces greatly by speed, also becomes the bottleneck of its popularization.
In addition, the explosive check system that has also occurred a kind of DR of comprising imaging device and CT imaging device on the market.The DR imaging device generally adopts the Time Triggered pattern that article are carried out data acquisition, promptly goes out bundle every a predetermined amount of time DR imaging system, and the ray that detecting device then will penetrate behind the article is converted into numerical information.This Time Triggered pattern requires the relative velocity between DR imaging device and the article even.
But when increasing the DR imaging device, also increased the length of explosive check system, and, also reduced the speed of article by the explosive check system because the inspection speed of CT technology is lower than the inspection speed of DR imaging device.For the physical dimension that guarantees the explosive check system is little, the length of its increase just must be as far as possible little, so the distance between CT imaging device and the DR imaging device just must be enough little.
In addition, item sizes greater than the bundle identity distance of CT imaging device and DR imaging device from situation under, the situation that article carry out DR and CT scan simultaneously can appear.For this reason, in the prior art, the speed when article pass through the DR imaging device and pass through the CT imaging device is identical.
Problem is that the required time of DR imaging device imaging is far smaller than the needed time of CT imaging device imaging, this means that total system can only work under the speed that the lower CT imaging device of speed is fit to.At this moment, if can make system when the DR imaging with DR scan mode work faster, and when CT and DR scan simultaneously, carry out work in slower CT scan mode, then can improve the average velocity of article as best one can by the explosive check system.But in this case, be equivalent to same article and accept DR scanning under friction speed, if do not control, institute becomes image will deform (as shown in Figure 2), and the technical feature of reduction explosive check system.
The utility model content
Be intended to overcome defective and at least one not enough aspect of existing in the prior art and make the utility model.
According to an aspect of the present utility model, a kind of commodity inspection system has been proposed, be used to check the article that transmit along transfer path, described commodity inspection system comprises the DR imaging device and is arranged on the CT imaging device in DR imaging device upstream or downstream along transfer path, wherein article by the average velocity of described DR imaging device greater than the average velocity of article by described CT imaging device.
Alternatively, described DR imaging device comprises DR data acquisition trigger module, and by in the process of DR imaging device, described article are every through preset distance A along described transfer path at described article, and described DR data acquisition trigger module just triggers the DR imaging device and carries out data acquisition.
Further alternatively, described DR data acquisition trigger module comprises the rotary encoder that is arranged on the described transfer path, angle of the every rotation of described rotary encoder is just sent trigger pip to DR data acquisition trigger module, wherein angle of the every rotation of rotary encoder corresponding to described article along described transfer path through a described preset distance A.
Perhaps, described DR data acquisition trigger module is included on the described transfer path with the spaced apart a plurality of position marks of described preset distance A and is used to detect the sign detector of described position mark process, and wherein said sign detector whenever detects a position mark through just sending trigger pip to DR data acquisition trigger module.
According on the other hand of the present utility model, a kind of commodity inspection system has been proposed, it comprises: transfer path; And the DR imaging device of arranging along transfer path, wherein said DR imaging device has DR data acquisition trigger module, pass through in the process of DR imaging device at article, every during through a preset distance A along described transfer path when described article, described DR data acquisition trigger module triggers the DR imaging device and carries out data acquisition.
Proposed a kind of DR imaging device more on the one hand according to of the present utility model, be used for the article that transmit along transfer path are scanned to form the image of described article, described DR imaging device comprises: x-ray source; The detector that is used for the detecting article process; The Digital Image Processing unit; And DR data acquisition trigger module, by in the process of DR imaging device, every during through a preset distance A along described transfer path when described article, described DR data acquisition trigger module triggers the DR imaging device and carries out data acquisition at article.
According to another aspect of the present utility model, a kind of CT imaging device has been proposed, be used for the article that transmit along transfer path are scanned to form the image of described article, comprising: x-ray source; The detector that is used for the detecting article process; The Digital Image Processing unit; And CT data acquisition trigger module, by in the process of CT imaging device, every during through a preset distance B along described transfer path when described article, described CT data acquisition trigger module triggers the CT imaging device and carries out data acquisition at article.
Description of drawings
Describe embodiment of the present utility model in detail by the reference accompanying drawing, it is clearer that the utility model will become, wherein:
Fig. 1 is the composition synoptic diagram of commodity inspection system;
Fig. 2 does not carry out the synoptic diagram that distance triggers the DR figure that obtains, and wherein Fig. 2 a is the article sectional views, and Fig. 2 b is the DR figure of article; With
Fig. 3 carries out the synoptic diagram that distance triggers the DR figure that obtains, and wherein Fig. 3 a is the article sectional views, and Fig. 3 b is the DR figure of article.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.In instructions, same or analogous drawing reference numeral is indicated same or analogous parts.Following explanation to the utility model embodiment is intended to overall utility model design of the present utility model is made an explanation with reference to accompanying drawing, and not should be understood to a kind of restriction of the present utility model.
As mentioned above, same article can deform (as shown in Figure 2) with the image that the constant duration trigger mode is accepted to scan under friction speed.Therefore, the problem that occurs anamorphose when in the prior art article being carried out DR and CT scan simultaneously still is difficult to solve.
Consider the problems referred to above, the utility model proposes a kind of commodity inspection system 100, commodity inspection system 100 can be the system of explosive check system or other identification by article.As shown in fig. 1, commodity inspection system 100 is used to check the article 9 that transmit along transfer path 4, and comprise DR imaging device 1 and be arranged on the CT imaging device 10 in DR imaging device 1 downstream along transfer path 4, wherein article 9 by the average velocity of described DR imaging device 1 greater than the average velocity of article 9 by described CT imaging device 10.Be positioned at the upstream of CT imaging device 10 although it should be noted that in accompanying drawing 1 DR imaging device 1,, DR imaging device 1 also can be positioned at the downstream of CT imaging device 10.
Described DR imaging device 1 can comprise DR data acquisition trigger module 2, and pass through in the process of DR imaging device 1 at described article 9, described article 9 are along described transfer path 4 every process preset distance A, and described DR data acquisition trigger module 2 just triggers DR imaging device 1 and carries out data acquisition.Wherein, described DR data acquisition trigger module 2 comprises the rotary encoder 3 that is arranged on the described transfer path 4, angle of described rotary encoder 3 every rotations is just sent trigger pip to DR data acquisition trigger module 2, wherein angle of rotary encoder 3 every rotations corresponding to described article 9 along described transfer path 4 through a described preset distance A.Perhaps, described DR data acquisition trigger module 2 is included on the described transfer path 4 with the spaced apart a plurality of position mark (not shown) of described preset distance A and is used to detect the sign detector (not shown) of described position mark process, and wherein said sign detector whenever detects a position mark through just sending trigger pip to DR data acquisition trigger module 2.
Certainly, described DR data acquisition trigger module 2 can adopt the mode of Time Triggered to be implemented in described article to trigger the DR imaging device during through a preset distance A and carry out data acquisition along described transfer path is every.That is, when through a time, and should pass through described preset distance A by transfer path in the time, DR data acquisition trigger module 2 just triggers the DR imaging device and carries out data acquisition.
Described CT imaging device 10 wherein also can comprise CT data acquisition trigger module 5 (having the function similar to the DR data acquisition module), pass through in the process of CT imaging device 10 at described article 9, described article 9 are every through a preset distance B along described transfer path 4, described CT data acquisition trigger module 5 just triggers CT imaging device 10 and carries out data acquisition, and wherein said preset distance B equals or is not equal to described preset distance A.Similarly, described CT data acquisition trigger module 5 can comprise and is arranged on the rotary encoder (not shown) that is used for CT imaging device 10 on the described transfer path 9, angle of the every rotation of described rotary encoder is just sent trigger pip to CT data acquisition trigger module, wherein angle of the every rotation of rotary encoder corresponding to described article 9 along described transfer path 4 through a described preset distance B.Similarly, described CT data acquisition trigger module 5 is included on the described transfer path 4 with the spaced apart a plurality of position mark (not shown) of described preset distance B and is used to detect the sign detector (not shown) of described position mark process, and wherein said sign detector whenever detects a position mark through just sending trigger pip to CT data acquisition trigger module.Similarly, described CT data acquisition trigger module can adopt the mode of Time Triggered to be implemented in described article to carry out data acquisition along the every CT imaging device that triggers during through a preset distance B of described transfer path.That is, when through a time, and should pass through described preset distance B by transfer path in the time, CT data acquisition trigger module just triggers the CT imaging device and carries out data acquisition.
As shown in fig. 1, described commodity inspection system 100 comprises that also the preceding preset distance C of imaging device (Fig. 1 the is a CT imaging device 10) place that is arranged in the downstream is used for the detector C that detecting article 4 front ends pass through, after front end that detector C detects article 4 passed through, the imaging device in the downstream began data acquisition.
Perhaps, preset distance D place was used for the detector D that the detecting article front end passes through before described commodity inspection system 100 also comprised the imaging device that is positioned at the downstream, wherein after the front end that detector D detects article 9 passes through, transfer path decelerates to second speed from first speed in described preset distance D, thereby the imaging device in the downstream begins data acquisition, perhaps accelerate to first speed, thereby begin data acquisition at the imaging device in downstream from second speed.
Described commodity inspection system 100 also comprises and is used to the upstream detector 6 of judging that article 9 front ends pass through before the imaging device that is positioned at the upstream, the front end that detects article 9 when upstream detector 6 by the time, the imaging device of upstream begins data acquisition.Certainly, described commodity inspection system 100 is used to judge the downstream detector 8 that passes through the article rear end after also can comprising the imaging device that is positioned at the downstream, when rear end that the downstream detector detects article 9 by and through the schedule time (fixed) according to the field conduct situation after, upstream detector 6 do not detect article 9 by the time, commodity inspection system 100 stops to check or being in holding state.
It should be noted that in this manual the front end of article 9 passes through, the leading edge of front end that is meant article 9 is by upstream detector 6 or detector 7 (detector C or detector D); The trailing edge of the rear end of the rear end of article 9 by being meant article 9 is by downstream detector 8.In addition, in this manual, upstream detector 6, detector 7 and downstream detector 8 can be set to optoelectronic switch.And in this manual, preset distance A, B are according to checking that the precision needs can be several millimeters to several centimetres and not wait, and transfer path 4 also can be the travelling belt that moves circlewise.
Discuss another embodiment below according to commodity inspection system of the present utility model.
A kind of commodity inspection system 100 ', comprising: transfer path 4; And the DR imaging device of arranging along transfer path 41, wherein said DR imaging device 1 has DR data acquisition trigger module 2, pass through in the process of DR imaging device 1 at article 9, every during through a preset distance A along described transfer path 4 when described article 9, described DR data acquisition trigger module 2 triggers DR imaging devices 1 and carries out data acquisition.
Described commodity inspection system 100 ' also the comprise CT imaging device 10 that is arranged in DR imaging device 1 upstream or downstream along transfer path 4.Wherein, article 9 pass through the average velocity of CT imaging device 10 greater than article 9 by the average velocity of DR imaging device 1.CT imaging device 10 wherein also can comprise CT data acquisition trigger module 5, and pass through in the process of CT imaging device 10 at described article 9, described article are every through a preset distance B along described transfer path 4, described CT data acquisition trigger module 5 just triggers CT imaging device 10 and carries out data acquisition, and wherein said preset distance B equals or is not equal to described preset distance A; Preset distance C place is used for the detector C that detecting article 9 front ends pass through before the imaging device that described commodity inspection system 100 ' also comprise is positioned at the downstream, and after front end that detector C detects article 9 passed through, the imaging device in the downstream began data acquisition.
Alternatively, described commodity inspection system 100 ' comprise that also the preceding preset distance D place of the imaging device that is positioned at the downstream is used to the detector D that judges that the article front end passes through, after the front end that detector D detects article passes through, transfer path decelerates to second speed from first speed in described preset distance D, thereby the imaging device in the downstream begins data acquisition, perhaps accelerate to first speed, thereby begin data acquisition at the imaging device in downstream from second speed.
Described commodity inspection system 100 ' is used to judge the downstream detector 8 that passes through the article rear end after also comprising the imaging device that is positioned at the downstream, when rear end that downstream detector 8 detects article by and through after the schedule time, upstream detector 6 do not detect article by the time, commodity inspection system stops to check or being in holding state.
In addition, the utility model relates to a kind of DR imaging device 1, is used for the article 9 that transmit along transfer path 4 are scanned to form the image of described article 9, comprising: the x-ray source (not shown); The detector that is used for the detecting article process; The Digital Image Processing unit; And DR data acquisition trigger module 2, by in the process of DR imaging device 1, every during through a preset distance A along described transfer path 4 when described article 9, described DR data acquisition trigger module 2 triggers DR imaging devices 1 and carries out data acquisition at article 9.That is to say, DR data acquisition trigger module 2 triggers DR imaging device 1 with the distance trigger mode and carries out data acquisition, no matter in which way article 9 on the transfer path 4 every through a preset distance A (), and DR data acquisition trigger module 2 will be triggered and go out bundle and carry out data acquisition with control DR imaging device 1.To not be subjected to the influence of the relative velocity between DR imaging device 1 and the article 9 with the DR imaging device 1 of distance trigger mode control, no matter this speed is to be slow soon, be at the uniform velocity.
In order to realize apart from trigger mode, described DR data acquisition trigger module 2 comprises the rotary encoder 3 that is arranged on the described transfer path 4, angle of described rotary encoder 3 every rotations is just sent trigger pip to DR data acquisition trigger module 2, wherein angle of rotary encoder 3 every rotations corresponding to described article 9 along described transfer path 4 through a preset distance A.No matter the rotational speed of rotary encoder 3 is how, need only its every rotation through an angle, it will send trigger pip.The end of the rotary encoder 3 here can comprise gear, and the gear teeth of this gear and transfer path 4 rolls and contact, and makes the transfer path 4 preset distance A that advances, and gear just rotates a predetermined angular.Rotary encoder 3 also can adopt other form, as long as can realize the transfer path 4 preset distance A that whenever advances, it just rotates a predetermined angular.Perhaps, described DR data acquisition trigger module 2 comprises that wherein said sign detector whenever detects a position mark through just sending trigger pip to DR data acquisition trigger module 2 along a plurality of position mark (not shown) and the sign detector (not shown) that is used to detect described a plurality of position mark processes of described transfer path 4 with described preset distance A layout.
But, CT imaging device 10 also can adopt above-mentioned apart from trigger mode.Therefore, the utility model also relates to a kind of CT imaging device 10, and it is used for the article 9 that transmit along transfer path 4 are scanned to form the image of described article 9, and CT imaging device 10 comprises: x-ray source; The detector that is used for detecting article 9 processes; The Digital Image Processing unit; And CT data acquisition trigger module 5, by in the process of CT imaging device 10, every during through a preset distance B along described transfer path 4 when described article 9, described CT data acquisition trigger module 5 triggers CT imaging devices 10 and carries out data acquisition at article.
Describe operating process below with reference to Fig. 1 in detail with the form of example according to commodity inspection system 100 of the present utility model.
As shown in Figure 1, DR imaging device 1 is positioned at the Way in of commodity inspection system 100, and CT imaging device 10 is positioned at Way out.Commodity inspection system 1 operational process is as follows:
(1) article 9 enter the inlet of commodity inspection system 100 with higher speed on transfer path 4.
(2) article 9 front ends make DR imaging device 1 go out bundle by after being positioned at the upstream detector 6 before the DR imaging device 1, and DR data acquisition trigger module 2 is started working.
(3) DR data acquisition trigger module 2 is worked according to the distance trigger mode.Rotary encoder 3 for example contacts with moving together of transfer path 4 by the rolling with transfer path 4 and rotates, transfer path 4 whenever moves a distance, rotary encoder 3 just rotates an angle, and angle of rotary encoder 3 every rotations is just sent trigger pip to DR data acquisition trigger module 2.Thereby DR imaging device 1 (for example certain displacement of transfer path 4) at a certain distance just carries out a data acquisition, and the data of adopting form the DR image after data processing.
(4) when article 9 before the CT imaging device 10 when preset distance places (for example apart from CT bundle identity distance from being a certain position) greater than 2 times of CT bed thickness, perhaps when the front end of article 9 passes through the detector 7 (detector D) of CT upstream, control transfer path 4 slows down, transfer path 4 (being scanning bed thickness place at distance CT bundle face for example) in described preset distance decelerates to the first lower speed and at the uniform velocity advances, and begins to trigger CT imaging device 10 simultaneously and goes out the Shu Jinhang data acquisition.
(5) CT data acquisition trigger module 5 goes out bundle by time trigger mode control CT imaging device 10, thereby carries out a data acquisition at regular intervals, will adopt data after treatment, form the CT image, and automatically the CT image analyzed, carry out material identification.Provide the skeleton view and the tomograph of article, report to the police in case of necessity.But, as mentioned above, CT data acquisition trigger module 5 also can go out bundle according to distance trigger mode control CT imaging device 10.
(6) if article 9 length greater than the distance between DR bundle face and the CT bundle face, the situation that article 9 carry out DR scanning and CT scan simultaneously then can appear, because image data triggers with the distance trigger mode during DR scanning, therefore the frequency of images acquired and transfer path 4 travelling speed are irrelevant, thereby have guaranteed the acquisition quality of DR image.
(7) the downstream detector 8 after CT imaging device 10 is passed through in article 9 rear ends, and behind certain hour (fixed) according to the field conduct situation, when no article 9 entered upstream detector 6 before the DR imaging device 1, commodity inspection system 100 stopped to check, or enters holding state.
DR data acquisition trigger module is carried out distance trigger, thereby realize the different situation hypograph quality of stability of transfer path speed.In gatherer process, the DR acquisition applications apart from trigger mode, therefore can realize the speed change collection.Gather thereby make article in the transfer path of commodity inspection system, can under higher speed, carry out DR earlier, under lower speed, carry out CT collection and DR afterwards simultaneously and gather, carry out at last gathering than the CT under the low velocity.When the CT imaging device is arranged on DR imaging device upstream, article can carry out CT earlier and gather under low speed in the transfer path of commodity inspection system, carry out CT collection and DR afterwards simultaneously and gather under lower speed, the DR that carries out at last under the fair speed gathers.As seen adopt commodity inspection system of the present utility model and inspection method guaranteeing the preferable image quality (as shown in Figure 3, gathering the image that obtains according to DR of the present utility model not have to be out of shape) situation under, improved the speed of article by commodity inspection system.
The utility model has been described with reference to one exemplary embodiment.But, apparent, those skilled in the art can obviously draw modification and the change that plurality of optional is selected under the instruction of foregoing description.Thereby the utility model comprises all selectable modification and the changes within the spirit and scope that fall into claims.
Claims (18)
1. commodity inspection system, comprise transfer path, described commodity inspection system is used to check the article that transmit along transfer path that described commodity inspection system also comprises the DR imaging device and is arranged on the CT imaging device in DR imaging device upstream or downstream along transfer path
It is characterized in that the transfer path at place, article place passes through the average velocity of described CT imaging device greater than the transfer path at place, article place by the average velocity of described DR imaging device.
2. commodity inspection system according to claim 1 is characterized in that,
Described DR imaging device comprises DR data acquisition trigger module, and
By in the process of DR imaging device, transfer path is every through a distance A at described article, and described DR data acquisition trigger module just triggers the DR imaging device and carries out data acquisition.
3. commodity inspection system according to claim 2 is characterized in that,
Described DR data acquisition trigger module comprises the rotary encoder that is arranged on the described transfer path, angle of the every rotation of described rotary encoder is just sent trigger pip to DR data acquisition trigger module, and wherein angle of the every rotation of rotary encoder is corresponding to the described distance A of described transfer path process.
4. commodity inspection system according to claim 2 is characterized in that,
Described DR data acquisition trigger module is included on the described transfer path with the spaced apart a plurality of position marks of a described distance A and is used to detect the sign detector of described position mark process, and wherein said sign detector whenever detects a position mark through just sending trigger pip to DR data acquisition trigger module.
5. commodity inspection system according to claim 2 is characterized in that,
Described DR data acquisition trigger module adopts the mode of Time Triggered to be implemented in described article and triggers the DR imaging device during through a distance A and carry out data acquisition along described transfer path is every.
6. commodity inspection system according to claim 2 is characterized in that,
Described CT imaging device comprises CT data acquisition trigger module, and
At described article by in the process of CT imaging device, described article along described transfer path every through one apart from B, described CT data acquisition trigger module just triggers the CT imaging device and carries out data acquisition.
7. commodity inspection system according to claim 6 is characterized in that,
Described CT data acquisition trigger module comprises the rotary encoder that is arranged on the described transfer path, angle of the every rotation of described rotary encoder is just sent trigger pip to CT data acquisition trigger module, wherein angle of the every rotation of rotary encoder corresponding to described transfer path through described one apart from B.
8. commodity inspection system according to claim 6, it is characterized in that, described CT data acquisition trigger module be included on the described transfer path with described one apart from the spaced apart a plurality of position marks of B be used to detect the sign detector of described position mark process, wherein said sign detector whenever detects a position mark through just sending trigger pip to CT data acquisition trigger module.
9. commodity inspection system according to claim 6, it is characterized in that described CT data acquisition trigger module adopts the mode of Time Triggered to be implemented in described article and triggers the CT imaging device during apart from B and carry out data acquisition along described one of the every process of described transfer path.
10. commodity inspection system according to claim 6 is characterized in that,
Described commodity inspection system comprises that also the previous distance C of the imaging device that is positioned at downstream place is used for the detector C that the detecting article front end passes through, and after front end that detector C detects article passed through, the imaging device in the downstream began data acquisition.
11. commodity inspection system according to claim 1, it is characterized in that, described commodity inspection system comprises that also the previous distance D of the imaging device that is positioned at downstream place is used for the detector D that the detecting article front end passes through, wherein after the front end that detector D detects article passes through, transfer path decelerates to second speed from first speed in a described distance D, thereby the imaging device in the downstream begins data acquisition, perhaps accelerate to first speed, thereby begin data acquisition at the imaging device in downstream from second speed.
12. commodity inspection system according to claim 1, it is characterized in that, described commodity inspection system also comprises and is used to the upstream detector of judging that the article front end passes through before the imaging device that is positioned at the upstream, the front end that detects article when the upstream detector by the time, the imaging device of upstream begins data acquisition.
13. commodity inspection system according to claim 12, it is characterized in that, described commodity inspection system is used to judge the downstream detector that passes through the article rear end after also comprising the imaging device that is positioned at the downstream, when rear end that the downstream detector detects article by and through a time after, the upstream detector do not detect article by the time, commodity inspection system stops to check or being in holding state.
14. a commodity inspection system comprises:
Transfer path; And
Along the DR imaging device of transfer path layout,
It is characterized in that, described DR imaging device has DR data acquisition trigger module, by in the process of DR imaging device, every during through a distance A along described transfer path when described article, described DR data acquisition trigger module triggers the DR imaging device and carries out data acquisition at article.
15. a DR imaging device is used for the article that transmit along transfer path are scanned to form the image of described article, comprising:
X-ray source;
The detector that is used for the detecting article process;
The Digital Image Processing unit; And
DR data acquisition trigger module,
It is characterized in that by in the process of DR imaging device, every during through a distance A along described transfer path when described article, described DR data acquisition trigger module triggers the DR imaging device and carries out data acquisition at article.
16. DR imaging device according to claim 15 is characterized in that,
Described DR data acquisition trigger module comprises the rotary encoder that is arranged on the described transfer path, angle of the every rotation of described rotary encoder is just sent trigger pip to DR data acquisition trigger module, and wherein angle of the every rotation of rotary encoder is corresponding to the described distance A of described transfer path process.
17. DR imaging device according to claim 15, it is characterized in that, described DR data acquisition trigger module comprises that wherein said sign detector whenever detects a position mark through just sending trigger pip to DR data acquisition trigger module along a plurality of position marks and the sign detector that is used to detect described a plurality of position mark processes of described transfer path with described distance A layout.
18. a CT imaging device is used for the article that transmit along transfer path are scanned to form the image of described article, comprising:
X-ray source;
The detector that is used for the detecting article process;
The Digital Image Processing unit; And
CT data acquisition trigger module,
It is characterized in that by in the process of CT imaging device, every through one during apart from B when described transfer path, described CT data acquisition trigger module triggers the CT imaging device and carries out data acquisition at article.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920109052 CN201540263U (en) | 2009-06-30 | 2009-06-30 | Object checking system, DR imaging device and CT imaging device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920109052 CN201540263U (en) | 2009-06-30 | 2009-06-30 | Object checking system, DR imaging device and CT imaging device |
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| CN201540263U true CN201540263U (en) | 2010-08-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936924B (en) * | 2009-06-30 | 2012-07-04 | 同方威视技术股份有限公司 | Article inspection system |
| CN104374783A (en) * | 2013-12-26 | 2015-02-25 | 清华大学 | Computed tomography (CT) system and method |
| CN108226195A (en) * | 2017-12-28 | 2018-06-29 | 清华大学 | CT examination system and CT imaging methods |
-
2009
- 2009-06-30 CN CN 200920109052 patent/CN201540263U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936924B (en) * | 2009-06-30 | 2012-07-04 | 同方威视技术股份有限公司 | Article inspection system |
| CN104374783A (en) * | 2013-12-26 | 2015-02-25 | 清华大学 | Computed tomography (CT) system and method |
| CN104374783B (en) * | 2013-12-26 | 2017-06-16 | 清华大学 | CT system and its method |
| CN108226195A (en) * | 2017-12-28 | 2018-06-29 | 清华大学 | CT examination system and CT imaging methods |
| CN108226195B (en) * | 2017-12-28 | 2023-10-13 | 清华大学 | CT inspection system and CT imaging method |
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