CN102183533B - Channel type X-ray safety check method and device - Google Patents
Channel type X-ray safety check method and device Download PDFInfo
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Abstract
The invention discloses a channel type X-ray safety check method, which comprises the following steps of: conveying an object to be detected to a detection channel through a detection inlet by a conveying device, and performing X-ray transmission scanning on the object to be detected in the detection channel; performing X-ray back scattering liquid scanning on the object to be detected in the detection channel; performing X-ray back scattering scanning on the object to be detected in the detection channel; and conveying the object to be detected out through a detection outlet by the conveying device. The invention also discloses a channel type X-ray safety check device. By adopting the channel type X-ray safety check method and the channel type X-ray safety check device of the embodiment, metal contraband goods can be detected by using digital X-ray transmission and displayed with images, explosive and combustible goods can be detected by using an X-ray Compton scattering technology and displayed with images, meanwhile, liquid contraband goods can be identified and audible and visual alarm is given; and the method and the device have the advantages of high detection speed, high sensitivity, good resolution, clear images, good radiation security check property and the like.
Description
Technical field
The present invention relates to mechanical field, relate in particular to a kind of channel type X-ray safety check method and device.
Background technology
At present, the various channel type X-ray security inspectors that use both at home and abroad mainly contain following several types:
The first, X ray transmission DR(Digital Radiography, the digitizing of X ray is taken a picture) pattern, the principle of this pattern (containing monoenergetic and dual intensity) work is to distinguish measured object in conjunction with instrument and testing staff's experience to be roughly organism, potpourri and inorganics.Although this pattern can detect metal more exactly, light materials contraband goods (such as inflammable explosive article) then is difficult to differentiate its classification.
The second, the multi-view X ray transmission mode, this pattern can obtain the detection effect that compares better, and still, its subject matter is that image reconstruction algorithm is immature, is difficult to specifically distinguish the light materials contraband goods, and spatial resolution is not high.
The third, single CT pattern, its advantage are to distinguish in detail each ingredient of interior of articles, can solve that article huddle, overlap problem.But because detector array and X-ray production apparatus all need rotate, thereby system is huge and heavy.It is expensive, and sweep time is long, particularly can not specifically identify light materials contraband goods type, and the screening machine false alarm rate of existing single CT pattern is up to 20%～30%.
The 4th kind, DR and CBS(Compton Backscatter Scanning, light materials detects) pattern of two kinds of combinations, its advantage is accurately to detect the metal contraband goods, can specifically identify inflammable explosive article again.But under general configuration condition, the space of CBS respectively rate is not high enough, mainly rebuilds the CBS image for the inflammable explosive article that adapts to solid simultaneously, thereby relatively poor to the measuring ability of liquid contraband goods.
Summary of the invention
Embodiment of the invention technical matters to be solved is, a kind of channel type X-ray safety check method and device are provided, can utilize digitized X ray transmission to detect metal contraband goods and image demonstration, can utilize again X ray Compton scattering technology for detection explosive and inflammable explosive article and image to show, can also identify the liquid contraband goods and give sound and light alarm simultaneously.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of channel type X-ray safety check method, may further comprise the steps:
Article to be detected are transferred in the sense channel by conveyer by detecting entrance, article to be detected carry out the X ray transmission scan in described sense channel, described X ray transmission scan is finished by the DR detector array and the first X-ray production apparatus that are arranged in described sense channel;
Article to be detected carry out the scanning of X ray backward scattering liquid in described sense channel, described X ray backward scattering liquid scanning is finished by the LI detector array that is arranged in described sense channel and the second X-ray production apparatus;
Article to be detected carry out X ray backward scattering scanning in described sense channel, described X ray backward scattering scanning is finished by the CBS detector array that is arranged in described sense channel and described the second X-ray production apparatus;
Transfer out article to be detected by detecting outlet by described conveyer.
Described X-ray safety check method is further comprising the steps of: described DR detector array, described LI detector array and described CBS detector array are carried out to each other shielding.
Described article to be detected carry out after the X ray transmission scan step further comprising the steps of in described sense channel: obtain the DR image that is associated with described article to be detected and show.
Described article to be detected carry out after the X ray backward scattering liquid scanning step further comprising the steps of in described sense channel: judge whether to carry out sound and light alarm, if the judgment is Yes, sound and light alarm and showing then if judge noly, is then carried out next step.
Described article to be detected carry out after the X ray backward scattering scanning step further comprising the steps of in described sense channel: obtain the CBS image that is associated with described article to be detected and show.
The invention also discloses a kind of channel-type X-ray safety inspection device, comprising: sense channel be separately positioned on described sense channel in and mutually arrange related,
Be used for treat test item and carry out the X ray DR detection system of X ray transmission scan,
Be used for the X ray LI detection system of described article to be detected being carried out the scanning of X ray backward scattering liquid,
Be used at X ray CBS detection system and many X-ray production apparatus of described article to be detected being carried out X ray backward scattering scanning;
Described many X-ray production apparatus respectively with described X ray DR detection system, described X ray LI detection system and described suitable connection of X ray CBS detection system;
Described X ray CBS detection system comprises a CBS detector array that is fixed in the described sense channel, and described X ray backward scattering scanning is finished by described CBS detector array and the second X-ray production apparatus, and described CBS detector array has the X ray crack;
Described X ray LI detection system comprises a LI detector array that is fixed in the described sense channel, and described X ray backward scattering liquid scanning is finished by described LI detector array and the second X-ray production apparatus.
Preferably, described X ray DR detection system comprises a DR detector array that is fixed in the described sense channel, and described X ray transmission scan is finished by described DR detector array and the first X-ray production apparatus, and described DR detector array has the X ray crack.
Implement channel type X-ray safety check method and the device of the embodiment of the invention, has following beneficial effect, adopt two X-ray production apparatus and multiple detector array to consist of three kinds of detecting patterns of DR detection array, LI detection array and CBS detection array, both can utilize digitized X ray transmission to detect metal contraband goods and image demonstration, can utilize again X ray Compton scattering technology for detection explosive and inflammable explosive article and image to show, can also identify the liquid contraband goods and give sound and light alarm simultaneously; Because the X ray of many X-ray production apparatus emissions forms 80 ° symmetrical plane fladellum, and then makes the radiation field in the sense channel even, without detecting the dead angle; And have that detection speed is fast, highly sensitive, good resolution, clear picture, the advantage such as the radiation safety check is good.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, the accompanying drawing that obtains other according to these accompanying drawings still belongs to category of the present invention.
Fig. 1 is the structured flowchart of embodiment of the invention channel type X-ray safety check method embodiment one;
Fig. 2 is the structured flowchart of embodiment of the invention channel type X-ray safety check method embodiment two;
Fig. 3 is the structured flowchart of embodiment of the invention channel-type X-ray safety inspection device;
Fig. 4 is the side-looking structural representation of a kind of embodiment of embodiment of the invention channel-type X-ray safety inspection device.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the invention discloses a kind of channel type X-ray safety check method, may further comprise the steps:
Article to be detected are transferred in the sense channel by conveyer by detecting entrance, article to be detected carry out the X ray transmission scan in described sense channel, described X ray transmission scan is finished by the DR detector array and the first X-ray production apparatus that are arranged in described sense channel;
Article to be detected carry out the scanning of X ray backward scattering liquid in described sense channel, the scanning of described X ray backward scattering liquid is by the LI(Liquid Identification that is arranged in described sense channel, Liquid identification) detector array and the second X-ray production apparatus finish;
Article to be detected carry out X ray backward scattering scanning in described sense channel, described X ray backward scattering scanning is finished by the CBS detector array that is arranged in described sense channel and described the second X-ray production apparatus;
Transfer out article to be detected by detecting outlet by described conveyer.
Below specify the embodiment of a kind of each step of channel type X-ray safety check method of the present invention, as shown in Figure 2:
Among the step S10, article to be detected are transferred in the sense channel by conveyer by detecting entrance, and during enforcement, article to be detected can laterally be placed, vertically place, also can accumbency or perpendicular sleeping being placed on the sense channel, do not affect the enforcement of this programme; Sense channel is used for article to be checked are carried out safety inspection, and its concrete generation type can adopt the common mode of building.
Among the step S20, article to be detected carry out the X ray transmission scan in described sense channel, and described X ray transmission scan is finished by the DR detector array and the first X-ray production apparatus that are arranged in described sense channel.Concrete, the passage top board of the headroom of sense channel and left and right sides passage side plate can install and fix respectively a plurality of components and parts of X ray DR detection system, X ray LI detection system, X ray CBS detection system.And X-ray production apparatus is the groundwork member of channel-type screening machine, and it cooperates the detection scanning that can realize metal contraband goods, liquid contraband goods and light materials contraband goods with other sniffers.During specific embodiment, X-ray production apparatus can be set to two, is respectively the first X-ray production apparatus, the second X-ray production apparatus.
For example, the X ray transmission scan in this step is positioned at the middle front part of sense channel, and its effect is for the detection of the article to be detected that enter sense channel being carried out the violated thing of metal.
During implementation, article to be detected (such as case and bag) are placed on the feed belt of conveyer, enter in the sense channel by detecting entrance, be sent to respectively the area of space of the X ray DR detection array on the left and right sides passage side plate of the corresponding passage top board that is arranged in sense channel and sense channel when article to be detected, and when just being arranged in X ray transmission crack in the scope of this X ray DR detection array, the X ray that the first X-ray production apparatus sends sees through X ray transmission crack and X ray DR detection array and treats in the lump test item and carry out X-ray scanning, can scan accurately the metal contraband goods.Certainly, the X ray angle that the first X-ray production apparatus sends has certain impact to the accuracy of detection of channel-type X-ray machine, prove through a large amount of tests, send 80 ° of plane sector bundles and symmetrical when shining on the X ray DR detection array at the first X-ray production apparatus, radiation field in the sense channel is more even, and the Effect on Detecting that can reach is best.
In this step, X ray DR detection array is multichannel cesium iodide scintillation crystal and silicon photoelectricity diode.
Among the step S201, obtain the DR image that is associated with described article to be detected and show that the effect of this step is to treat the analysis image that test item carries out X-ray scanning at demonstration screen display the first X-ray production apparatus and X ray DR detection array.
Among the step S30, article to be detected carry out the scanning of X ray backward scattering liquid in described sense channel, and described X ray backward scattering liquid scanning is finished by the LI detector array that is arranged in described sense channel and the second X-ray production apparatus;
The scanning of X ray backward scattering liquid is positioned at the middle part of sense channel, its effect is for the article to be detected that enter sense channel being carried out the violate a ban detection of thing of liquid, X ray LI detection array is set in the sense channel, is used for preventing secondary shielding spare that other detection systems (such as X ray transmission scan or X ray backward scattering scanning) are disturbed X ray LI detection array and the crack that carries out transmission with X ray that above-mentioned transmission crack similarly sends for the second X-ray production apparatus.
X ray LI detection array is divided into two zones, and correspondence is arranged on the left and right sides passage side plate of sense channel respectively, and it is set to perpendicular alignment battle array.In the present embodiment, the X ray that the second X-ray production apparatus sends sees through crack and injects in the X ray LI detection array, and the X ray that the second X-ray production apparatus sends and X ray LI detection array can be treated respectively test item and carry out X-ray scanning.Secondary shielding spare in the present embodiment can be arranged to stereotype too.
During implementation, article to be detected are delivered to the scanning of X ray backward scattering liquid by feed belt after the X ray transmission scan is surveyed, when article to be detected are sent to the respectively corresponding area of space that is arranged in the X ray LI detection array on the passage side plate of the sense channel left and right sides, and when just being arranged in crack in the scope of this X ray LI detection array, the X ray that the second X-ray production apparatus sends sees through crack and X ray LI detection array and treats in the lump test item and carry out X-ray scanning, the second X-ray production apparatus preferably sends 80 ° of plane sector bundles and symmetrical shining in the sense channel, again by the detected material volume scattering in the sense channel, the X ray LI detection array of both sides is sub by specific angle receiving scattered light, and the liquid contraband goods is judged.
In this step, X ray LI detection array is multichannel sodium iodide scintillation crystal and photomultiplier.
Among the step S301, judge whether to carry out sound and light alarm, if the judgment is Yes, sound and light alarm and show then if judge noly, is then carried out next step.The effect of this step is to treat the result that test item carries out X-ray scanning at demonstration screen display the second X-ray production apparatus and X ray LI detection array, judges whether to carry out sound and light alarm, and being detected such as article to be detected is contraband goods, then reports to the police.Be judged as noly, continue detect.
Among the step S40, article to be detected carry out X ray backward scattering scanning in described sense channel, and described X ray backward scattering scanning is finished by the CBS detector array that is arranged in described sense channel and described the second X-ray production apparatus;
X ray backward scattering scanning is positioned at the rear portion of sense channel, its effect is for the article to be detected that enter sense channel are carried out the detection of light materials contraband goods, and sense channel has transmission crack, CBS detection array and is used for preventing the 3rd shielding part that other detection systems (such as X ray transmission scan or the scanning of X ray backward scattering liquid) are disturbed the CBS detection array.
The CBS detection array is divided into two zones, and correspondence is arranged on the left and right sides passage side plate of sense channel respectively, and it is set to perpendicular alignment battle array.In the present embodiment, the X ray that the second X-ray production apparatus sends sees through crack and injects in the CBS detection array, and the X ray that the second X-ray production apparatus sends and CBS detection array can be treated respectively test item and carry out X-ray scanning.The 3rd shielding part in this step can be arranged to stereotype too.
During implementation, article to be detected are delivered to X ray backward scattering scanning by feed belt behind X ray backward scattering liquid scanning probe, when article to be detected are sent to the respectively corresponding area of space that is arranged in the CBS detection array on the passage side plate of the sense channel left and right sides, and when just being arranged in crack in this CBS detection array scope, the X ray that the second X-ray production apparatus sends sees through crack and CBS detection array and treats in the lump test item and carry out X-ray scanning, the second X-ray production apparatus preferably sends 80 ° of plane sector bundles and symmetrical shining in the sense channel, again by the detected material volume scattering in the sense channel, the CBS detection array of both sides is sub by specific angle receiving scattered light, and the light materials contraband goods is surveyed.At last by detecting outlet output.
In this step, the CBS detection array is multichannel cesium iodide scintillation crystal and silicon photoelectricity diode.
Among the step S401, obtain the CBS image that is associated with described article to be detected and show.The acting on of this step shows that screen display the second X-ray production apparatus and X ray CBS detection array treat the analysis image that test item carries out X-ray scanning.
Among the step S50, transfer out article to be detected by detecting outlet by described conveyer.
Draw by summarizing the description of above-mentioned a kind of channel type X-ray safety check method, the X ray that the first X-ray production apparatus and the second X-ray production apparatus send is penetrated by the X ray crack that is arranged in DR detector array, CBS detector array respectively, the X ray of the first X-ray production apparatus and the emission of the second X-ray production apparatus forms 80 ° symmetrical plane fladellum, also so that make the radiation field in the sense channel more even, without the dead angle of detecting.Meanwhile, in this safety inspection method: described DR detector array, described LI detector array and described CBS detector array are carried out to each other shielding.
Referring to Fig. 3, the invention also discloses a kind of channel-type X-ray safety inspection device, comprise: sense channel 4 be separately positioned on described sense channel 4 in and mutually arrange related, in the X ray DR detection system 6 of described article to be detected being carried out the X ray transmission scan;
Be used in the X ray LI detection system 7 of described article to be detected being carried out the scanning of X ray backward scattering liquid;
Be used at X ray CBS detection system 8 and many X-ray production apparatus of described article to be detected being carried out X ray backward scattering scanning;
Described many X-ray production apparatus can be suitable with described X ray DR detection system 6, described X ray LI detection system 7 and described X ray CBS detection system 8 respectively.
X ray DR detection system 6 comprises a DR detector array 61 that is fixed in the described sense channel, and described X ray transmission scan is finished by described DR detector array 61 and the first X-ray production apparatus 51, and described DR detector array 61 has the X ray crack.
Described X ray LI detection system 7 comprises a LI detector array 71 that is fixed in the described sense channel, and described X ray backward scattering liquid scanning is finished by described LI detector array 71 and the second X-ray production apparatus 52.
Described X ray CBS detection system 8 comprises a CBS detector array 81 that is fixed in the described sense channel 4, described X ray backward scattering scanning is finished by described CBS detector array 82 and the second X-ray production apparatus 52, and described CBS detector array 81 has the X ray crack.
Between described X ray DR detection system 6, described X ray LI detection system 7 and the described X ray CBS detection system 8 a plurality of shielding parts are set, such as a plurality of shielding boxs 62 set between each system, 72 and 82.Preferably, shielding part is set to stereotype.
In conjunction with referring to Fig. 3, shown in Figure 4, during the implementation of a kind of channel-type X-ray safety inspection device of the present invention, article to be detected (such as case and bag) are placed on the feed belt of conveyer 2, enter in the sense channel 4 by detecting entrance 41, be sent to respectively the area of space of the X ray DR detection array 61 on the left and right sides passage side plate of the corresponding passage top board that is arranged in sense channel 4 and sense channel 4 when article to be detected, and when just being arranged in X ray transmission crack in the scope of this X ray DR detection array 61, the X ray that the first X-ray production apparatus 51 sends sees through X ray transmission crack and X ray DR detection array 61 and treats in the lump test item and carry out X-ray scanning, can scan accurately the metal contraband goods.Certainly, the X ray angle that the first X-ray production apparatus 51 sends has certain impact to the accuracy of detection of channel-type X-ray machine, prove through a large amount of tests, send 80 ° of plane sector bundles and symmetrical when shining on the X ray DR detection array 61 at the first X-ray production apparatus 51, radiation field in the sense channel 4 is more even, and the Effect on Detecting that can reach is best.
Then, article to be detected are delivered to X ray LI detection system 7 by feed belt after X ray DR detection system 6 is surveyed, when article to be detected are sent to the respectively corresponding area of space that is arranged in the X ray LI detection array 71 on sense channel 4 left and right sides passage side plates, and when just being arranged in crack in the scope of this X ray LI detection array 71, the X ray that the second X-ray production apparatus 52 sends sees through crack and X ray LI detection array 71 and treats in the lump test item and carry out X-ray scanning, the second X-ray production apparatus 52 preferably sends 80 ° of plane sector bundles and symmetrical shining in the sense channel 4, again by the detected material volume scattering in the sense channel 4, the X ray LI detection array 71 of both sides is sub by specific angle receiving scattered light, and the liquid contraband goods is judged.
And then, article to be detected are delivered to X ray CBS detection system 8 by feed belt 21 after X ray LI detection system 7 is surveyed, when article to be detected are sent to the respectively corresponding area of space that is arranged in the CBS detection array 81 on sense channel 4 left and right sides passage side plates, and when just being arranged in crack in these CBS detection array 81 scopes, the X ray that the second X-ray production apparatus 52 sends sees through crack and CBS detection array 81 and treats in the lump test item and carry out X-ray scanning, the second X-ray production apparatus 52 preferably sends 80 ° of plane sector bundles and symmetrical shining in the sense channel 4, again by the detected material volume scattering in the sense channel 4, the CBS detection array 81 of both sides is sub by specific angle receiving scattered light, and the light materials contraband goods is surveyed.Last article to be detected are by detecting outlet 42 outputs.
Channel type X-ray security inspector of the present invention, adopt two X-ray production apparatus and multiple detector array to consist of three kinds of detecting patterns of DR detection array, LI detection array and CBS detection array, both can utilize digitized X ray transmission to detect metal contraband goods and image demonstration, can utilize again X ray Compton scattering technology for detection explosive and inflammable explosive article and image to show, can also identify the liquid contraband goods and give sound and light alarm simultaneously; Because the X ray of many X-ray production apparatus emissions forms 80 ° symmetrical plane fladellum, and then makes the radiation field in the sense channel even, without detecting the dead angle; And have that detection speed is fast, highly sensitive, good resolution, clear picture, the advantage such as the radiation safety check is good.
Above disclosed is a kind of preferred embodiment of the present invention only, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to claim of the present invention still belongs to the scope that the present invention is contained.
Claims (7)
1. a channel type X-ray safety check method is characterized in that, may further comprise the steps:
Article to be detected are transferred in the sense channel by conveyer by detecting entrance, article to be detected carry out the X ray transmission scan in described sense channel, described X ray transmission scan is finished by the DR detector array and the first X-ray production apparatus that are arranged in described sense channel;
Article to be detected carry out the scanning of X ray backward scattering liquid in described sense channel, described X ray backward scattering liquid scanning is finished by the LI detector array that is arranged in described sense channel and the second X-ray production apparatus;
Article to be detected carry out X ray backward scattering scanning in described sense channel, described X ray backward scattering scanning is finished by the CBS detector array that is arranged in described sense channel and described the second X-ray production apparatus;
Transfer out article to be detected by detecting outlet by described conveyer.
2. channel type X-ray safety check method as claimed in claim 1 is characterized in that, described X-ray safety check method is further comprising the steps of:
Described DR detector array, described LI detector array and described CBS detector array are carried out to each other shielding.
3. channel type X-ray safety check method as claimed in claim 1 is characterized in that, described article to be detected carry out X ray transmission scan step in described sense channel afterwards further comprising the steps of:
Obtain the DR image that is associated with described article to be detected and show.
4. channel type X-ray safety check method as claimed in claim 1 is characterized in that, described article to be detected carry out X ray backward scattering liquid scanning step in described sense channel afterwards further comprising the steps of:
Judge whether to carry out sound and light alarm, if the judgment is Yes, sound and light alarm and show then if judge noly, is then carried out next step.
5. channel type X-ray safety check method as claimed in claim 1 is characterized in that, described article to be detected carry out X ray backward scattering scanning step in described sense channel afterwards further comprising the steps of:
Obtain the CBS image that is associated with described article to be detected and show.
6. a channel-type X-ray safety inspection device is characterized in that, comprising: sense channel be separately positioned on described sense channel in and mutually arrange related,
Be used for treat test item and carry out the X ray DR detection system of X ray transmission scan,
Be used for the X ray LI detection system of described article to be detected being carried out the scanning of X ray backward scattering liquid,
Be used at X ray CBS detection system and many X-ray production apparatus of described article to be detected being carried out X ray backward scattering scanning;
Described many X-ray production apparatus respectively with described X ray DR detection system, described X ray LI detection system and described suitable connection of X ray CBS detection system;
Described X ray CBS detection system comprises a CBS detector array that is fixed in the described sense channel, and described X ray backward scattering scanning is finished by described CBS detector array and the second X-ray production apparatus, and described CBS detector array has the X ray crack;
Described X ray LI detection system comprises a LI detector array that is fixed in the described sense channel, and described X ray backward scattering liquid scanning is finished by described LI detector array and the second X-ray production apparatus.
7. channel-type X-ray safety inspection device as claimed in claim 6, it is characterized in that, described X ray DR detection system comprises a DR detector array that is fixed in the described sense channel, described X ray transmission scan is finished by described DR detector array and the first X-ray production apparatus, and described DR detector array has the X ray crack.
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| CN103018263A (en) * | 2013-01-04 | 2013-04-03 | 合肥希贝爱斯光电科技有限公司 | DR (Digital Radiography) and LS (Liquid Security) composite X-ray channel type security inspection machine |
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