巴西专利BR112014013226B1 PORTABLE SAFETY INSPECTION SYSTEM AND DEPLOYMENT METHOD

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专利摘要:
portable security inspection system. this descriptive report describes a radiographic inspection system for tracking an area. the inspection system has a container that defines a closed volume, a radiation source positioned within the closed volume, a detector assembly, a movable structure attached to a portion of the base of the container, and a controller programmed to move the movable structure to achieve an ideal height of field of view of the radiation source based on a plurality of data.
公开号:BR112014013226B1
申请号:R112014013226-7
申请日:2014-01-31
公开日:2021-08-24
发明作者:Edward James Morton
申请人:Rapiscan Systems, Inc；
IPC主号:

专利说明:

CROSS REFERENCE
[001] This application is based on Provisional Patent Application Number US 61/759,211 entitled "Portable Security Inspection System" and filed January 31, 2013. FIELD
[002] This descriptive report refers generally to portable inspection systems. More particularly, it relates to an integrated portable x-ray inspection system that can be deployed at a plurality of surveillance sites to carry out a complete security check of vehicles and loads passing at various heights. FUNDAMENTALS
[003] Trade fraud, smuggling and terrorism have increased the need for various non-intrusive inspection systems in applications ranging from curbside inspection of parked vehicles to sweeping in congested and high-traffic ports as the systems Transport facilities, which efficiently provide for the movement of goods across borders, also provide opportunities for inclusion of contraband items such as weapons, explosives, illicit drugs and precious metals. The term port, while generally accepted as referring to a seaport, also applies to a land border crossing or any port of entry.
[004] X-ray systems are used for medical, industrial and security inspection purposes because they can cost-effectively generate images of indoor spaces that are not visible to the human eye. Materials exposed to x-ray (or any other type of) radiation absorb different amounts of x-ray radiation and therefore attenuate an x-ray beam to different degrees, resulting in a transmitted or back-scattered level of radiation that is characteristic of the material. . Attenuated or backscattered radiation can be used to generate a useful representation of the contents of the radiated object. A typical single energy x-ray configuration used in security inspection equipment might have a sweeping or fan-shaped x-ray beam that is transmitted through or back-scattered by the inspected object. X-ray absorption or backscattering is measured by detectors after the beam has passed through the object and an image is produced of its content and presented to an operator.
[005] With limited space and a need to expand, finding adequate space to accommodate additional inspection facilities along the normal process route remains difficult. Additionally, selected locations are not necessarily permanent enough for door operators to commit to long-term installation of inspection equipment. Furthermore, systems incorporating high energy x-ray sources, or linear accelerators (LINAC), require a large investment in shielding material (usually in the form of concrete formations or buildings) or the use of exclusion zones (dead space ) around the construction itself. In any case, the building footprint requirement is usually very significant depending on the size of the cargo containers to be inspected.
[006] A mobile inspection system provides a suitable solution to the need for improved flexible inspection capabilities. Because the system is relocatable and investment in a permanent building in which to accommodate equipment is avoided, site allocation becomes less of an issue and introducing such a system becomes less disruptive. In addition, a mobile inspection system provides operators, through greater throughput, with the ability to inspect a wider range of cargo, shipments, vehicles and other containers.
[007] Conventional inspection systems are disadvantageous in that they suffer from a lack of rigidity, are difficult to implement, and/or have smaller fields of view. Specifically, conventional relocatable inspection systems generally comprise at least two bars, where one bar will contain a plurality of detectors and the other bar will contain at least one x-ray source. The detectors and x-ray source work in unison to sweep the load on the moving vehicle. In conventional single-bar relocatable inspection systems, the x-ray source is located in a truck or flat bed and the detectors in a bar structure extending outside the truck. These systems are characterized by moving scanner systems in which the source-detector system moves relative to a stationary object to be inspected. Furthermore, the detectors and the radiation source are both mounted on a moving bed, bar or a vehicle so that they are integrally connected with the vehicle. This limits the flexibility of dismantling the entire system for better portability and adjustable deployment to accommodate a wide variety of different sizes of cargo, shipments, vehicles and other containers. As a result these systems can be complicated to implement and pose a number of disadvantages and restrictions.
[008] Thus, there is a need for improved inspection methods and systems that can be quickly loaded onto a truck or trailer being pulled by any vehicle and transported to a surveillance site for quick and easy deployment.
[009] There is also a need for a portable inspection system that does not need an expensive specialized transport vehicle in order to be transported to a surveillance location.
[010] There is an additional need for a portable inspection system that is lightweight and can be quickly deployed for inspection. SUMMARY
[011] This descriptive report generally provides a portable non-invasive security inspection system that is easily and quickly deployed.
[012] In addition, this descriptive report provides a radiation inspection arrangement designed to be easily incorporated into a container, such as, but not limited to, a reinforced box that can be transported to a plurality of locations that require surveillance .
[013] This descriptive report also provides a radiation inspection arrangement designed to be easily incorporated into a container, which can be transported to a plurality of surveillance locations by loading onto a truck or trailer being pulled by a transport vehicle .
[014] This descriptive report also provides a radiation inspection arrangement designed to be easily incorporated into a container that does not require any specialized vehicle for transport to a surveillance location.
[015] This descriptive report also provides a portable radiation inspection system that is lightweight and can be easily deployed at a surveillance site to inspect passing vehicles and cargo.
[016] This descriptive report also provides a portable radiation inspection system that is lightweight and can be easily deployed at a surveillance site to inspect people and their property.
[017] This descriptive report also provides a portable radiation inspection system that can be easily implemented at various heights allowing inspection of cars, vans and trucks.
[018] In one embodiment, this descriptive report includes a radiation inspection system comprising at least one or more types of radiation source(s) and detector assemblies.
[019] In one embodiment, the portable inspection system is a backscatter x-ray inspection system comprising a backscatter x-ray source and detection assembly.
[020] In one modality, this descriptive report describes an inspection system for tracking an object under inspection that comprises: a container with four walls, a roof and a base that define a closed volume; at least one radiation source positioned within said enclosed volume, wherein emissions from said radiation source define a field of view; at least one detector assembly positioned within said enclosed volume or physically attached to said container; and a plurality of legs attached to said container at each of the four corners, wherein said plurality of legs are extendable to at least one height position from ground level and wherein said at least one height position is determined using a plurality of data.
[021] In one embodiment, said plurality of data includes dimensions of objects under inspection, desired inspection area, detector array configuration, desired field of view, x-ray source type, x-ray source configuration, and structures restriction or the presence of people.
[022] In one embodiment, said container further comprises vertical recesses in each of the four corners to accommodate said plurality of legs.
[023] In one embodiment, in a retracted position, said plurality of legs rest within said vertical recess to be located at least partially recessed in relation to the vertical walls of said container.
[024] In one embodiment, in a stowed position, said container rests on a trailer portion of a transport vehicle.
[025] In one embodiment, in a deployed position at a surveillance site, at least one of said plurality of legs first extends horizontally outward from said four corners of the container and then vertically downwards so that said plurality of legs are in contact with the ground, thus elevating said container out of the trailer portion.
[026] In one embodiment, said trailer portion is driven away from the container once said plurality of legs are in contact with the ground and said inspection system is in a fully deployed position. In one embodiment, for transporting said container from said surveillance location the trailer portion is driven underneath said container and said plurality of legs are vertically retracted to lower and retract said container in said trailer portion.
[027] In one embodiment, said at least one source and said at least one detector set are configured to generate scanning information of an object under inspection.
[028] In one embodiment, once deployed, said legs are telescopically retracted in such a way that said container is in contact with the ground, two of said four walls of said container are folded down.
[029] In one embodiment, since two of said four walls of said container are folded down, said roof is optionally vertically extended upwards if required by the sweeping application to form a driving passage portal at said surveillance site .
[030] In one embodiment, said at least one source and said at least one detector set are configured to generate multi-view scan images of an object under inspection.
[031] In another modality, this descriptive report describes an inspection system for deployment in a surveillance site, which comprises: a container with four walls, a roof and a base that define a closed volume, in which said container is retracted into a trailer portion of a transport vehicle; at least one radiation source positioned within said enclosed volume, wherein emissions from said radiation source define a field of view; at least one detector assembly positioned within said enclosed volume or physically attached to said container; and a plurality of legs attached to said container at each of the four corners, wherein said plurality of legs are extensible by first moving said at least one of said plurality of legs horizontally outward from said container and subsequently moving said plurality of legs vertically downwards so that the legs are in contact with the ground, thus lifting said container out of said trailer portion.
[032] In one embodiment, a height of said container above the floor is adjustable through a telescopic movement of said plurality of legs. In one embodiment, the height of said container above the floor is determined using a plurality of data wherein said plurality of data includes dimensions of objects under inspection, desired inspection area, detector array configuration, desired field of view, type of x-ray source, x-ray source configuration, and restriction structures or the presence of people.
[033] In yet another modality, this descriptive report describes a method of implementing an inspection system comprising: a container with four walls, a roof and a base that define a closed volume, in which said container is retracted in a portion from a trailer to a transport vehicle; at least one radiation source positioned within said enclosed volume, wherein emissions from said radiation source define a field of view; at least one detector assembly positioned within said enclosed volume or physically attached to said container; and a plurality of legs attached to said container at each of said four corners of said container, the method comprising: extending at least one of said plurality of legs horizontally outward from said four corners of said container; extending said plurality of legs vertically downwardly so that said plurality of legs are in contact with the ground at a surveillance location; continuing to extend said plurality of legs vertically downwardly to allow said container to be removed from the trailer portion and to be supported entirely on said plurality of legs at said surveillance location; and moving said trailer portion away from said surveillance location.
[034] In one embodiment, a height of said plurality of legs is adjusted to accommodate a plurality of sweep heights. In one embodiment, the height of said container above the floor is determined using a plurality of data wherein said plurality of data includes dimensions of objects under inspection, desired inspection area, detector array configuration, desired field of view, type of x-ray source, x-ray source configuration, and/or restricting structures or the presence of people.
[035] In one embodiment, said plurality of legs is fully retracted such that said container is positioned at ground level, two of said four walls of said container are folded down and said roof is optionally vertically extended upward so to form a driving passage portal at said surveillance site.
[036] The above mentioned modalities and others will be described in greater detail in the drawings and in the detailed description provided. BRIEF DESCRIPTION OF THE DRAWINGS
[037] These and other features and advantages of this descriptive report will be further appreciated as they are best understood by reference to the detailed description when considered in connection with the accompanying drawings: Figure 1 is a block diagram of a system x-ray inspection system incorporated in a box, in accordance with an embodiment of the present specification; Figure 2A illustrates the x-ray inspection system incorporated in a box loaded on a transport vehicle, in accordance with an embodiment of the present descriptive report; Figure 2B illustrates the x-ray inspection system incorporated in a box comprising extendable legs according to an embodiment of the present descriptive report; Figure 3 illustrates a plurality of exemplary container heights for sweeping vehicles of different heights; Figure 4A is a perspective view of the x-ray inspection system incorporated in a container comprising legs ex. tensionable and retracted in a trailer; Figure 4B illustrates the legs being extended horizontally outward from the container; Figure 4C illustrates a first intermediate vertically extended leg position; Figure 4D illustrates a second intermediate vertically extended leg position; Figure 4E is an enlarged view of the leg being extended horizontally and vertically from the container; Figure 4F illustrates the legs being extended vertically enough to remove the container from the trailer; Figure 4G illustrates the container being deployed to its four extended legs while the support trailer is moved out from under the container; Figure 4H illustrates the container being deployed on its four outstretched legs; Figure 4I illustrates the container being deployed at an exemplary first height above the ground; Figure 4J illustrates container being deployed at a second exemplary height above ground; Figure 4K illustrates sweep of a vehicle lo through using the deployed container incorporating the x-ray inspection system; Figure 4L illustrates the positioning of the trailer under the deployed container to begin reloading the container onto the trailer; Figure 4M illustrates the container being lowered into the trailer; Figure 4 N illustrates the container retracted into the trailer; Figure 4O illustrates the x-ray inspection system incorporated into the container retracted into the stationary trailer being used to sweep a passing vehicle; Figure 5A illustrates a trailer chassis equipped to accommodate with security the container, according to an embodiment; Figure 5B illustrates the container being received on the equipped trailer chassis; Figure 6 is a schematic representation of an x-ray source detector assembly known in the art that can be used in the x-ray inspection system, according to a modality of this descriptive report; Figure 7A illustrates a source/detector assembly, in accordance with one embodiment of the present specification; Figure 7B illustrates a source/detector assembly, in accordance with another embodiment of the present specification; Figure 8 is an assembly of multi-view x-ray source detector employed in the x-ray inspection system, in accordance with an embodiment of the present specification; Figure 9A illustrates an embodiment of an extended roof container; Figure 9B illustrates the container with folded side walls down and roof extended to form a driving passage portal; and Figure 9C is a cross-sectional side view of the container with a source/detector assembly, in accordance with an embodiment of the present specification. DETAILED DESCRIPTION
[038] This descriptive report describes a portable radiation inspection system. In various embodiments the portable inspection system is designed to be easily incorporated into a container, such as, but not limited to, an armored box, which can be transported to a plurality of locations that require surveillance. The in-box inspection system can be quickly deployed to a surveillance site, without the need for complex setup procedures. In addition, in various modalities, both the inspection system and the incorporation box are made of lightweight components, allowing them to be transported using any suitable vehicle, such as a truck or trailer, and easy deployment at a surveillance site. In various embodiments the portable inspection system is used to scan objects such as passing vehicles or cargo positioned outside the radiation housing.
[039] This descriptive report is addressed to several modalities. The following description is provided to enable a person of ordinary skill in the art to practice the specification. Language used in this descriptive report should not be interpreted as a general denial of any specific modality or used to limit claims beyond the meaning of the terms used herein. The general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the invention. Furthermore, the terminology and phraseology used are intended to describe exemplary modalities and should not be considered limiting. Thus, this descriptive report must be given the broadest scope, encompassing numerous alternatives, modifications and equivalents consistent with the disclosed principles and characteristics. For the sake of clarity, the details concerning the technical material which is known in the technical fields relating to the present invention have not been described in detail so as not to unnecessarily obscure the present descriptive report.
[040] It should be noted here that although the system described in this specification refers to the use of x-ray radiation, any suitable radiation source or combination thereof may be employed with the present invention. Examples of other suitable radiation sources include gamma rays, microwaves, optics, radio frequency, millimeter waves, terahertz, infrared radiation and ultrasound.
[041] As would be apparent to persons of skill in the art, the cost and complexity of an appropriate transport vehicle is a limitation in using portable radiation inspection systems in remote locations. This descriptive report provides an independent inspection system that can be transported to a surveillance site without requiring the use of any specialized and expensive vehicles for transport, and can be easily deployed there, ready to begin automated vehicle inspection and passing loads.
[042] Figure 1 is a block diagram that shows an exemplary inspection system incorporated in a box, according to one modality of this descriptive report. In various embodiments, the inspection system 102 is incorporated in a container, such as a box 104, having four sides, a floor and ceiling, and comprises a source-detector assembly 106 for obtaining a radiographic image of an object that is present. being inspected, and an inspection workstation 108. Image data from the source-detector assembly 104 is transferred to the inspection workstation 108 which can be located beside the source-detector assembly 106, within the container, or remotely as required in the application. The inspection workstation 108 may be located inside an armored vehicle, in an existing building, in a temporary structure, or within the inspection system 102. The inspection workstation is in data communication with the inspection system. inspection using any form of wired or wireless communication.
[043] In various embodiments, the portable radiation inspection system of this descriptive report comprises an x-ray source and a plurality of detectors for obtaining a radiographic image of an object being inspected.
[044] In one modality, the x-ray inspection system is composed of high-energy inspection equipment based on transmission images with x-ray radiation generated by a linear accelerator with typical beam quality from 1 MeV to 9MeV. These systems are very effective in probing the structure and shape of articles of relatively high atomic numbers.
[045] In one embodiment, the x-ray inspection system 102 also comprises one or more sensors 110 for analyzing one or more parameters of vehicles and loads passing through. Examples of 110 sensors include photographic devices, video cameras, thermal cameras, infrared (IR) cameras, chemical trace detection equipment, radio frequency (RF) monitoring devices, RF jamming devices, number capture systems automated license plates and automated container code capture systems. In one embodiment, auxiliary data, including video, image, graph, temperature, heat, chemistry, communication signals, or other data, obtained through sensors 110 are also transferred to inspection workstation 108 and presented in graphical form. for system inspector review. In one modality, auxiliary data is advantageously combined to produce a global consolidated threat report for the system inspector.
[046] In various modalities, the portable x-ray inspection system of this descriptive report can be used with any vehicle that allows the system to be quickly relocatable and easily transportable. Figure 2A illustrates the x-ray inspection system of the present specification incorporated in a box 202 that is capable of being transported in the rear of a vehicle 204 at highway speeds from one surveillance location to another. In one embodiment, the weight of the x-ray inspection system incorporated in the box 202 ranges from 100 kilograms to 4500 kilograms depending on site-specific sensor configuration and built-in shielding requirements.
[047] Figure 2B illustrates the x-ray inspection system incorporated in a box 202 comprising the extendable legs 206 that can be dragged down to ground level to support the full weight of the x-ray inspection system. Extendable legs 206 are used to lift the x-ray inspection system up and out of the back of transport vehicle 204.
[048] In various modalities a plurality of extendable leg designs can be implemented, including any form of driven motion such as mechanical, hydraulic and pneumatic designs, and all such designs are covered within the scope of this descriptive report.
[049] In one embodiment, the height of the extendable legs 206 can be adjusted by making the x-ray inspection system be fixed at a desired height above the ground facilitating inspection of vehicles and passing loads. In one embodiment, in addition to establishing an optimal height of the x-ray inspection system with respect to objects under inspection, the field of view of the x-ray inspection system (in a vertical plane) can also be adjusted to cover a field of necessary sight while minimizing the total radiation exposure to the environment. In one embodiment, the field of view is manually adjusted by first using a multipoint switch, such as a three-position switch, to adjust the desired height of the x-ray inspection system and then pressing the button (such as a button raising or lowering) to affect the movement of the inspection system to the earlier set height. In another modality, the field of view is automatically adjusted according to the video analysis of an approaching object to be inspected.
[050] In one embodiment, a controller is programmed to determine an optimal height of the extendable legs 206 based on a plurality of data, including dimensions of the objects under inspection, desired inspection area, detector array configuration, desired field of view , x-ray source type, x-ray source configuration, and/or restraining structures or the presence of people. It should be appreciated that the controller can be used to control the height of any platform or support structure, if legs 206 are not specifically used. It should be understood by those skilled in the art that, depending on the object under inspection and the checkpoint requirements, the plurality of data can be manipulated accordingly.
[051] Once an x-ray inspection system scan operation at a surveillance site is completed, the x-ray inspection system embedded in a box is reloaded into the back of a transport vehicle by using the extendable legs and is quickly transported to another surveillance location. In one embodiment, the x-ray inspection system can be towed from one surveillance site to another in a trailer behind a general purpose vehicle. The deployment and recharging of the inspection system of the present invention is described in detail with reference to Figures 4A to 4Q below.
[052] Figure 3 illustrates inspection container 300 positioned at different heights 305, 306, 307 above the ground for sweeping vehicles or objects 325 having different heights 310, 311, 312. In addition, inspection container 300 is positioned at one mode, at a distance 315 from the object or vehicle under inspection. Furthermore, in one embodiment, inspection container 300 provides a field of view 320 of varying degrees depending on the vehicle or object being inspected.
[053] In one embodiment, where vehicle 325 is a truck that has a 310 height of about 4000 mm, inspection container 300 is positioned at a 305 height of 1200 mm from the ground. In addition, the inspection container is placed at a distance of 315 of 1500 mm from the 307 vehicle. This configuration provides a 320 global field of view of 88 degrees.
[054] In another embodiment, where vehicle 325 is a van having a height 311 of about 3000 mm, inspection container 300 is positioned at a height 306 of 900 mm from the ground. In addition, the inspection container is positioned at a distance of 315 of 950 mm from the 307 vehicle. This configuration provides a 320 global field of view of 87 degrees.
[055] In yet another embodiment, where vehicle 325 is a car having a height 312 of about 1800 mm, inspection container 300 is positioned at a height 307 of 600 mm from the ground. In addition, the inspection container is positioned at a distance 315 of 400 mm from the vehicle 307. This configuration provides a 320 global field of view of 86 degrees.
[056] The above examples are exemplary and it should be understood by those skilled in the art that adjustments can be made to achieve the scanning objectives of this specification.
[057] Figures 4A to 4O show perspective views of the inspection system of this descriptive report, incorporated into a container / compartment like a box, being deployed from a transport vehicle to a surveillance site and then recharged or retracted back to the transport vehicle.
[058] Figure 4A illustrates the x-ray inspection system of this specification, incorporated in container 405, and retracted into a trailer portion 410 of a transport vehicle 415. In one embodiment, transport vehicle 415 is a truck It is suitable for transport on the surface streets or the road, at regular speeds. According to an embodiment of the present invention, container 405 comprises four vertical walls 406 substantially forming a rectangular box. In addition, container 405 comprises four vertical recesses 420 one at each of the four corners of container 405. Each vertical recess 420 accommodates a leg 425 which when in a retracted position, legs 425 rest within vertical recesses 420 such that they are leveled or slightly flush with respect to the respective vertical walls 406 of container 405.
[059] Each of the legs 425, in an deployed position, can be extended horizontally away from its respective corner of the container 405 and can also be extended up and down vertically, in a telescopic manner, so as to define the container base height 405 at varying heights above ground level. For deployment at a surveillance site, at least one of the legs 425 is first extended horizontally outward from respective vertical recesses 420, as shown in Figure 4B. It should be noted that it may not be necessary for all legs to extend horizontally and this is dependent on the need for slack to allow the trailer wheels to pass through the legs. Thereafter, legs 425 are extended vertically downward as shown in a first vertically or telescopically intermediate leg position 430a of Figure 4C and a second vertically or telescopically intermediate leg position 430b of Figure 4D. As shown in Figure 4D, in extended leg position 430b legs 425 touch the ground.
[060] Figure 4E is an enlarged view illustrating a piston 426 in a horizontally extended position thus allowing horizontal extension of the leg 425 outward from the vertical recesses 420. The leg 425 is also visible as having been shortened vertically downward so that is in a vertically extended leg position, such as position 430b of Figure 4D.
[061] As shown in Figure 4F, legs 425 are further shortened or extended vertically down, beyond leg position 430b of Figure 4D (where legs 425 touch the ground), causing container 405 to be lifted and removed to from the chassis of the trailer 410. Once the container 405 is positioned at an optimal height and all four legs 425 are touching the ground, the trailer 410 is towed from under the container 405, as shown in Figure 4G.
[062] As a result, as shown in Figure 4H, container 405 is now deployed and standing on fully extended / telescopic legs 425 at a first height at the surveillance site. The height of the base of the container 405 above the ground can now be adjusted, for scanning, by means of the vertical telescopic movement of legs 425. Figure 4I shows legs 425 in a second position retracted vertically to position container 405 at a second height while Figure 4J shows legs 425 in a third position retracted vertically to position container 405 at a third height. Persons of ordinary skill in the art should appreciate that once deployed to the ground, legs 425 can be retracted or extended vertically to respectively lower or raise container 405 at various distances above ground to accommodate different sweep heights. The first, second, and third heights of container 405 in Figures 4H through 4J correspond to the heights of containers 305, 306, 307 of Figure 3.
[063] Since legs 425 are retracted or extended vertically to properly position the height of container 405, a target object or vehicle can be swept. For example, as shown in Figure 4K, container 405 is positioned at a suitable height to scan a car passing 435 and generate a radiographic scan image of car 435.
[064] Referring now to Figure 4L, for transportation or redeployment elsewhere the container 405 has to be retracted or reloaded into the trailer 410. Thus, trailer 410 is driven so that it is positioned under the container 405 that is deployed to the trailer surveillance site. If necessary, the height of container 405 is adjusted by extending legs 425 vertically so that trailer 410 can be driven unhindered below container 405. transport vehicle in the container, while driving aft to position the trailer 410 below the container 405, a plurality of safeguards are provided as a) having a reversing chamber in the transport vehicle, b) having a rear metal "bumper" of the driver's cabin so that the controller knows when he is in position, and c) having a position sensor on the 405 container (on the wall of the 405 container that faces the transport vehicle in reverse) that act when the transport vehicle is approximately close to correct positioning for reloading the 405 container for trailer 410.
[065] Since trailer 410 is positioned below container 405, legs 425 are vertically retracted as shown in Figure 4M, thus lowering container 405 gradually into trailer 410. Figure 4N shows container 405 in one position retracted on trailer 410. Like on trailer 410, legs 425 are fully retracted vertically; then legs 425 are completely retracted horizontally to rest within vertical recesses 420.
[066] According to one aspect of the present invention, a moving target (such as a vehicle) can also be swept when the container is in the stowed position on the stationary trailer. Figure 4O shows container 405 retracted onto stationary trailer 410 as a truck 445 passes by. The truck passing 445 is swept to produce a radiographic image of it. In one embodiment, the height of container 405 when in the stowed position on trailer 410 corresponds to height 306 in Figure 3.
[067] The trailer chassis is suitably equipped to ensure the container, incorporating the x-ray inspection system, is retracted securely into the chassis for transport as well as for scanning targets while retracted into the chassis. In one embodiment, as shown in Figure 5A, the 505 trailer chassis is equipped with a pair of 510 container mounting brackets located on the front and rear of the 505 chassis, as well as four “V” shaped container location plates. 515, one located at each corner of chassis 505. As shown in Figure 5B, the four locating plates 515 and corresponding rollers 520 (on the base of container 525) ensure that container 525 lines up with front and rear mounting brackets 510 when be lowered onto chassis 505. In one embodiment, after container 525 has been lowered onto chassis 505, the four legs 530 move inward to the stowed position and are held in place by an angled plate 535 located on each of the four leg assemblies 530. Angled plate 535 on the inner end of each leg 530 is located in a frame on each side of mounting bracket 510, securing container 525 in the stowed position on chassis 505.
[068] Figure 6 is a schematic representation of a radiation source and detector 600 assembly known in the art that can be used in the inspection system of this descriptive report. In one embodiment, the assembly 600 comprises an x-ray source in the form of a rotating disk x-ray source 602. An object to be scanned is shown in the form of a truck or pickup truck 604. In one embodiment, a detector 606 it is disposed on the same side of the pickup truck or truck as the source. The source is arranged to radiate a single region of the object at any one time (ie, in any radiance or explosion event). The source produces a tightly collimated pencil beam 608 that radiates a point on object 604. Radiation 610 is scattered in all directions and is detected at detector 606. Detector 606 measures the amount of radiation per radiation event in order to provide information about the point of the object being radiated during that event.
[069] In another embodiment, the x-ray source used in the inspection system of this descriptive report comprises a multi-element diffusion collimator to produce an x-ray fan beam to radiate the object to be scanned; x-rays backscattered from the object being detected by a segmented detector assembly located behind the multi-element collimator and comprising a detector element corresponding to each collimator element. Such an x-ray source is described in US Patent Application Number 13/368,202, assigned to the assignee of this specification, and incorporated herein by reference in its entirety.
[070] In yet another embodiment of the present specification, an x-ray backscatter source detector assembly is combined with a high intensity linear accelerator based transmission imaging source detector assembly in order to correlate spatially surface x-ray backscatter imaging with large amounts of object transmission imaging as an additional investigation in detecting illicit materials and objects in cargo items.
[071] Figure 7A illustrates a source detector assembly, according to an embodiment of this descriptive report. Here, an x-ray linear accelerator (linear accelerator) 720 is used to fire a collimated fan beam of high energy radiation (at least 900 keV) through an object 722 under inspection and towards a ray detector array x 724 which can be used to form a high resolution transmission x-ray image of the product under inspection. The x-ray linear accelerator beam is pulsed so that as the object under inspection passes through the beam, the set of one-dimensional projections can be acquired and later stacked together to form a two-dimensional image. In this embodiment, an x-ray backscatter detector 726 is placed near the edge of the inspection region on the same side as the x-ray linear accelerator 720, but shifted to one side of the x-ray beam so that it does not attenuate the beam. X-ray transmission itself.
[072] According to an alternative embodiment, the 720 source is a low energy x-ray tube source with energies in the range of 60keV to 450keV.
[073] As mentioned above, it should be noted here that the radiation source may be, in alternative embodiments, one or a combination of gamma rays, microwaves, radio frequency, optics, millimeter waves, terahertz, infrared and ultrasound radiation. plus high and low energy x-rays.
[074] Figure 7B illustrates a source detector assembly, according to another modality of this descriptive report. It is advantageous to use two backscatter imaging detectors 726, one on each side of the primary beam. In some embodiments backscatter detectors can be arranged differently. In some embodiments, there may be only one backscatter detector. In other modalities, there may be more than two of these detectors. X-ray inspection systems employing such a backscatter source detector assembly are described in US Patent Application Number 12/993,831, assigned to the assignee of this specification, and incorporated herein by reference in its entirety.
[075] In another embodiment, the present specification provides a multi-view source/detector assembly composed of four discrete backscatter source detector assemblies that reuse the pencil beam of a backscatter system to illuminate large-area detectors. a second backscatter system so that simultaneous multisided transmission and backscatter imaging using the same set of four x-ray beams can be achieved.
[076] Figure 8 is a multiple-view x-ray source detector set used in the x-ray inspection system, according to a modality of this descriptive report. In one embodiment, system 800 has a three view configuration activated by three simultaneously active rotating x-ray beams 805, 806, and 807 with a plurality of correspondingly placed detectors, in one embodiment, in transport configuration to form a tunnel of 820 scan. System 800 provides a high degree of inspection capability, in accordance with an objective of the present specification, while at the same time achieving this in substantially low dose x-rays since the volume of space radiated at any point in time it is low compared to conventional prior art linescan systems which typically have a large number of pixelated x-ray detectors and fan beam x-ray irradiation. As shown in Figure 8, there is almost no interference between the three x-ray views that are taken in simultaneously.
[077] To allow scanning of multiple views, in another modality, the radiation inspection system of the present invention is operable in a conduction passage portal format. Figures 9A and 9B illustrate an embodiment of a container 905, incorporating an inspection system, which has down-folded outer walls 910 and a vertically extendable roof 915. As shown in Figure 9B, once container 905 is deployed at a four-legged surveillance site 930, 915 the roof is vertically extended and exterior walls 910 (referenced in Figure 9A) are folded down to form a ramp 935 to allow a target vehicle, such as a car, to be driven onto the ramp 935 and through container 905.
[078] Figure 9C shows a schematic side cross-sectional view of container 905 formed in a driveway portal with vertically extended roof 915 and walls folded down forming ramp 935. In one embodiment, an x-ray source 920 is positioned on ceiling 915 and a plurality of detectors are provided within container 905 In one embodiment, three detector sets are strategically positioned: a first detector on the floor or base 925 and a second and third detector set positioned within the two walls fixed 940 of container 905. In other embodiments, one or more detectors are placed on roof 915, such as one on each side of source 920 to allow generation of both backscatter and transmission scan images of a target vehicle passing through the container 905. In yet other embodiments, additional radiation sources are placed on sidewalls 940 to enable the multiple inspection system. the 800 views of Figure 8.
[079] According to one aspect of this specification, there is almost no limit to the number of views that can be collected at the same time on system 800 with each detector segment 821 being radiated by no more than one beam of rays. x primary at any time. In one embodiment, the detector 830 configuration shown in Figure 8 is made up of 12 detector 821 segments each of, for example, 1 m long to form a 3 m (width) x 3 m (height) manhole. ). In one embodiment, the detector configuration 830 is capable of supporting six independent x-ray views to allow the transition of scanning x-ray views between adjacent detectors. An alternative embodiment comprising 0.5 m long detector segments 821 is capable of supporting up to 12 independent x-ray image views.
[080] Persons of ordinary skill in the art should appreciate that in system 800 of this specification, volume of detector material is independent of the number of views to be collected and the density of viewing electronics is quite low compared to detector assemblies of Conventional prior art pixelated x-rays. Furthermore, a plurality of x-ray sources can be powered from an appropriately rated high voltage generator allowing additional x-ray sources to be added relatively simply/conveniently. These features allow the 800 high-density multi-view system in this report to be advantageously viable in the context of security screening. Such a multiple view x-ray inspection system has been described in US patent application number 13/756,211, assigned to the assignee of the present invention and incorporated herein by reference in its entirety.
[081] As would be apparent to persons skilled in the art, a plurality of types of x-ray source detector assemblies may be employed in the portable x-ray inspection system of this specification, such as, but not limited to, exemplary source detector assemblies described above.
[082] Thus, the portable x-ray inspection system of this descriptive report is a robust inspection system that can be easily transported from one surveillance site to another without the need for specialized and expensive transport vehicles. In addition, the portable x-ray inspection system is a lightweight system that can be incorporated into a box for transport and easy to deploy in a variety of surveillance locations.
[083] The above examples are merely illustrative of the many applications of the system in this descriptive report. Although only a few modalities of this descriptive report have been described here, it should be understood that this descriptive report can be carried out in many other specific ways without departing from the spirit or scope of the descriptive report. Therefore, the present modalities and examples are to be considered as illustrative and not restrictive.

权利要求:
Claims (13)
[0001]
1. Inspection system for tracking an object under inspection and configured to be transported in a trailer (410) of a vehicle (415), comprising: a container (405) with four walls (406), four corners, a roof and a base defining a closed volume, wherein, in a retracted position, said container (405) rests on the trailer portion (410) of the vehicle (415); at least one radiation source (920), in particular a x-ray source positioned within said enclosed volume, wherein emissions from said radiation source define a field of view; at least one detector assembly positioned within said enclosed volume or physically attached to said container; in that it further comprises: a piston (426) positioned at each of said four corners, each piston being configured to move horizontally from a retracted state to an extended state; four legs (425), each of said four legs attached to a respective said piston at each of the four corners, each of said four legs being adapted to be horizontally extendable outwardly from a respective corner and retractable inward. of a respective corner based on the movement of the attached piston, wherein each of said four legs is vertically extensible downwards when extended outwardly, so that said legs are in contact with the ground to thereby raise said container (405) outside the trailer portion (410) and vertically adjustable to at least one height position from ground level wherein said at least one height position is determined using a plurality of data.
[0002]
2. Inspection system according to claim 1, characterized in that said plurality of data includes at least one of the dimensions of the objects under inspection, desired inspection area, detector set configuration, desired field of view, type of x-ray source, x-ray source configuration, restriction structures, and the presence of people.
[0003]
3. Inspection system according to claim 1, characterized in that said container further comprises vertical recesses (420) in each of the four corners to accommodate the legs (425).
[0004]
4. Inspection system according to claim 3, characterized in that in a retracted position said legs (425) rest within said vertical recess (420) to be located at least partially recessed in relation to the vertical walls of said container.
[0005]
5. Inspection system according to any one of claims 1 to 4, characterized in that in an deployed position, each leg (425) is in contact with the ground and the container is not resting on a trailer portion of the transport vehicle.
[0006]
6. Inspection system according to any one of claims 1 to 5, characterized in that said at least one source and said at least one detector set are configured to generate scanning information from an object under inspection.
[0007]
7. Inspection system according to any one of claims 1 to 6, characterized in that once deployed, said legs (425, 930) are telescopically retracted in such a way that said container is in contact with the ground and two of said four walls (910) of said container are folded down.
[0008]
8. Inspection system according to claim 7, characterized in that since two of said four walls (910) of said container are folded down, said roof (915) is adapted to be vertically extended upwards to form a driving passage portal at said surveillance location.
[0009]
9. Inspection system according to any one of claims 1 to 8, characterized in that said at least one source and said at least one detector set are configured to generate multiple-view scan images of an object under inspection .
[0010]
10. Method of deploying an inspection system comprising: a container (405) with four walls (406), a roof and a base defining a closed volume, wherein said container (405) is retracted into a trailer portion ( 410) of a transport vehicle (415); at least one radiation source, in particular an x-ray source, positioned within said enclosed volume, wherein emissions from said radiation source define a field of view; at least one detector assembly positioned within said enclosed volume or physically attached to said container; and a plurality of legs (425) attached, by means of pistons (426), to said container (405) at each of the four corners of said container, the method characterized in that it comprises: extending at least one of said plurality of legs (425) horizontally outward from said four corners of said container using at least one of said pistons (426); extending each of said plurality of legs (425) vertically downwardly so that each of said plurality of legs is in contact with the ground at a surveillance location; continue to extend each of said plurality of legs (425) vertically downwards to allow said container (405) to be removed from the trailer portion (410) and supported entirely on said plurality of legs (425) at said surveillance site; and, driving said trailer portion away from said surveillance site.
[0011]
11. The method of claim 10, characterized in that a height of said plurality of legs is adjusted to accommodate a plurality of scan heights.
[0012]
12. Method according to claim 11, characterized in that the height of said container above the floor is determined using a plurality of data wherein said plurality of data includes at least one of the dimensions of the objects under inspection, area of desired inspection, detector array configuration, desired field of view, x-ray source type, x-ray source configuration, restraint structures, and the presence of people.
[0013]
13. Method according to any one of claims 10, 11 or 12, characterized in that each of said plurality of legs is adapted to be fully retracted in such a way that said container is positioned at ground level, and in that two of said four walls (910) of said container are folded down and said roof (915) is vertically extended upwards to form a driving passage portal at said surveillance site.

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同族专利:

公开号 | 公开日

CA2898654C|2020-02-25|

GB2523942B|2018-07-04|

WO2014121097A1|2014-08-07|

JP2016509223A|2016-03-24|

PL2952068T3|2021-07-26|

AU2014212158B2|2017-04-20|

US20180128935A1|2018-05-10|

CA2898654A1|2014-08-07|

US9791590B2|2017-10-17|

MX350070B|2017-08-25|

KR20150123229A|2015-11-03|

US20200103547A1|2020-04-02|

MX2015009857A|2016-04-07|

KR102167245B1|2020-10-19|

CN105379425A|2016-03-02|

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JP6385369B2|2018-09-05|

EP2952068A4|2016-09-14|

US10317566B2|2019-06-11|

US20140211916A1|2014-07-31|

GB201511805D0|2015-08-19|

AU2014212158A1|2015-08-13|

BR112014013226A2|2020-11-03|

CN105379425B|2018-03-27|

GB2523942A|2015-09-09|

EP2952068B1|2020-12-30|

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法律状态:
2020-11-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2021-06-01| B350| Update of information on the portal [chapter 15.35 patent gazette]|

2021-06-08| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2021-08-24| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 31/01/2014, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US201361759211P| true| 2013-01-31|2013-01-31|

US61/759,211|2013-01-31|

PCT/US2014/014198|WO2014121097A1|2013-01-31|2014-01-31|Portable security inspection system|

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