WO2023280256A1 - 射线扫描设备及射线扫描系统 - Google Patents

射线扫描设备及射线扫描系统 Download PDF

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Publication number
WO2023280256A1
WO2023280256A1 PCT/CN2022/104297 CN2022104297W WO2023280256A1 WO 2023280256 A1 WO2023280256 A1 WO 2023280256A1 CN 2022104297 W CN2022104297 W CN 2022104297W WO 2023280256 A1 WO2023280256 A1 WO 2023280256A1
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WIPO (PCT)
Prior art keywords
scanning
radiation
detector
installation
radiation source
Prior art date
Application number
PCT/CN2022/104297
Other languages
English (en)
French (fr)
Inventor
张丽
陈志强
黄清萍
金鑫
丁辉
周勇
魏斌涛
赵振华
Original Assignee
同方威视技术股份有限公司
清华大学
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Application filed by 同方威视技术股份有限公司, 清华大学 filed Critical 同方威视技术股份有限公司
Priority to EP22837001.1A priority Critical patent/EP4369059A1/en
Priority to KR1020237044625A priority patent/KR20240016317A/ko
Publication of WO2023280256A1 publication Critical patent/WO2023280256A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/226—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays using tomography
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]

Definitions

  • the present application relates to the field of radiation imaging, and in particular relates to a ray scanning device for a baggage conveying system and a ray scanning system for baggage inspection.
  • Radiation scanning technology can play an important role in security inspection because it can eliminate the influence of overlapping objects.
  • Traditional ray scanning equipment uses a slip ring device to obtain projection data at different angles through the rotation of the X-ray machine and the detector, and obtains tomographic images through reconstruction methods to obtain the internal information of the detected luggage items.
  • the current luggage inspection equipment can reconstruct the atomic number and electron density of the substance to be inspected, so as to realize the identification of the substance type, which plays a very good role in the detection of explosives and dangerous goods. Effect.
  • the current airport baggage conveying system usually has a high baggage conveying speed to meet timeliness, which requires the security inspection equipment to have a correspondingly high detection speed, and increasing the detection speed may lead to increased radiation and increased costs And other issues.
  • the present application provides a ray scanning device for a baggage conveying system, which includes a conveying device, which transports the object to be detected through the scanning area of the ray scanning device; and a plurality of scanning stages, which are respectively arranged at the On multiple scanning planes in the conveying direction of the object, each scanning stage includes a ray source module and a detector group arranged oppositely, and the ray source module includes multiple source points for emitting ray beams, wherein the ray sources of multiple scanning stages The modules are respectively arranged below, left and right of the scanning area.
  • the embodiment of the present application also provides a ray scanning system for baggage inspection, which includes the ray scanning device and the baggage conveying system according to the embodiment of the present application.
  • the baggage conveying system includes a conveyor belt for conveying baggage, wherein the ray scanning device The conveyor is matched to the height and speed of the conveyor belt.
  • An embodiment of the present application provides an installation and positioning structure for a radiation source of a radiation scanning device.
  • the radiation scanning device includes a radiation source and a fixed support frame.
  • the installation and positioning structure includes a main body that can be fixedly connected to the radiation source and the support frame.
  • the radiation source can be fixedly installed on the support frame through the main body, and the installation and positioning structure also includes: a moving device, the radiation source can be moved to a predetermined installation position on the first plane by the moving device; a first positioning device, which is used for The radiation source is positioned on a plane; the lifting device is used to adjust the position of the radiation source along the first direction, wherein the first direction is perpendicular to the first plane; and the second positioning device is used to fix the radiation source in the first direction The location of the radiation source.
  • a moving device the radiation source can be moved to a predetermined installation position on the first plane by the moving device
  • a first positioning device which is used for The radiation source is positioned on a plane
  • the lifting device is used to adjust the position of the radiation source along the first direction, wherein the first direction is perpendicular to the first plane
  • the second positioning device is used to fix the radiation source in the first direction The location of the radiation source.
  • each radiation source of the radiation scanning device can be disassembled and installed separately, and the beam output angle of the radiation source can also be adjusted.
  • the embodiment of the present application also provides an installation and fixing structure for a detector of a radiation scanning device.
  • the radiation scanning device includes a detector and a fixed support frame.
  • the detector includes one or more detector groups, and the detector group
  • the installation and fixing structure is fixedly installed on or removed from the support frame.
  • the installation and fixing structure includes: a first installation part, which is fixedly arranged on the detector group; a second installation part, which is fixedly arranged on the support frame and can Cooperating with the linear movement of the first installation part, the detector group can move to a predetermined installation position along the second installation part in the state where the first installation part and the second installation part cooperate with each other; and the fixing device is arranged on the detector group One side along the width direction, used to fix the detector group relative to the mounting datum on the support frame.
  • each detector group of the detector can be disassembled and installed separately, and can be disassembled and maintained along the conveying direction of the detected object or the vertical direction of the conveying direction according to needs, which improves the detection efficiency.
  • Fig. 1A shows a schematic diagram of the overall structure of a radiation scanning device according to an embodiment of the present application.
  • FIGS. 1B and 1C show schematic structural diagrams of radiation source modules and detectors in the second scanning stage and the third scanning stage of the radiation scanning device according to the embodiment of the present application.
  • Fig. 2 shows a schematic diagram of the shape of a radiation beam of a radiation source according to an embodiment of the present application.
  • 3A and 3B show schematic diagrams of the target point distribution of the radiation source module viewed from the conveying direction of the object to be detected according to an embodiment of the present application.
  • Fig. 4 shows a schematic structural diagram of a detector group according to an embodiment of the present application.
  • Fig. 5 shows a schematic structural diagram of a detector unit according to an embodiment of the present application.
  • 6A-6C show schematic views of the installation and positioning structure of the radiation source module according to the embodiment of the present application.
  • FIGS 7A-7D show schematic views of the installation and fixing structure of the detector group according to some embodiments of the present application.
  • FIGS 8A-8D show schematic diagrams of installation and fixing structures of detector groups according to some other embodiments of the present application.
  • FIGS 9A-9B show schematic diagrams of installation and fixing structures of detector groups according to other embodiments of the present application.
  • the embodiment of the present application provides a ray scanning device for a baggage conveying system.
  • the radiation scanning device includes a conveying device for transporting the detected object through the scanning area of the radiation scanning device, and a plurality of scanning stages arranged on a plurality of scanning planes along the conveying direction of the detected object, and each scanning stage includes a corresponding ray Source modules and probes.
  • each scanning stage includes a corresponding ray Source modules and probes.
  • the ray scanning device may also include a control device, which can perform image reconstruction based on the digital signals generated by each scanning stage, so as to obtain internal information of the detected object.
  • the detected objects are luggage, parcels and other items that need security inspection, and the scanning area is limited by the ray source modules and detectors at each scanning level.
  • each scanning level includes a ray source module and a detector that are arranged oppositely.
  • each ray source module of each scanning level includes a plurality of source points for emitting ray beams.
  • the X-ray source modules are respectively arranged below, left and right of the scanning area, and optionally, viewed along the conveying direction of the object to be detected, a plurality of X-ray source modules of multiple scanning stages form a structure surrounding the upper opening of the scanning area semi-closed structure.
  • the conveying device of the radiation scanning device of the present application can be set to have a higher height from the surface (such as the ground, etc.) on which the radiation scanning device is placed, so that The height matches (for example, the same height as the conveyor belt of the baggage conveying system) with a higher height of the detected object conveying line (for example, baggage conveying system, etc.) located upstream or downstream of the ray scanning device.
  • the upper, lower, left and right sides of the scanning area refer to the upper, lower, left and right sides of the scanning area when viewed along the conveying direction of the detected object.
  • the detectors of each scanning level are respectively arranged opposite to the radiation source module and arranged to be able to receive almost all the radiation passing through the object to be detected. Therefore, the radiation scanning device according to the present application can obtain very comprehensive scanning data, ensuring image quality. In this way, although the application only arranges radiation sources on three sides of the scanning area, compared with the case of arranging radiation sources on four sides of the scanning area, the image quality can still be guaranteed, and the cost of radiation sources can be saved.
  • the radiation source module is not arranged above the scanning area, which can also facilitate the maintenance of the radiation source module.
  • control device is connected to each scanning stage, and controls the beam emission sequence of the source points of the radiation source modules of each scanning stage, in particular, so that the radiation source modules of each scanning stage respectively have a source point emitting beams at the same time.
  • the scanning speed of the ray scanning device can be increased, and the detection speed can be increased accordingly, so that the ray scanning device can be connected with the detected object conveying line (such as a baggage conveying system, etc.) ) (for example, the speed of the conveyor is the same as the speed of the conveyor belt of the baggage handling system).
  • the ray source modules of each scanning level can be set to emit ray beams with different energies. High energy beam of rays. In this way, when detecting luggage items with a small thickness and a large width, the penetration rate of rays in the width direction of luggage can be ensured, and the number of rays detectable by the detector can be increased, thereby improving image quality.
  • FIG. 1A-1C schematically illustrate the structure of a radiation scanning device according to some embodiments of the present application.
  • Fig. 1A shows a schematic diagram of the overall structure of the radiation scanning device
  • Fig. 1B and Fig. 1C respectively show the schematic diagrams of the structure of the second scanning stage and the third scanning stage of the radiation scanning device in Fig. 1A.
  • the radiation scanning equipment includes a plurality of scanning stages (for example, a first scanning stage A, a second scanning stage B and a third scanning stage C), a channel 110 and a conveying device, wherein the first scanning stage A is not separately shown, but the first scanning stage A is symmetrically arranged with the third scanning stage C, the conveying means are also not shown in the figure, but the conveying means are arranged in the channel 110 close to the lower surface of the channel 110 and extend through the channel 110 .
  • Each scanning stage includes its own radiation source module and detector.
  • the conveying device transports the detected object through the scanning area of each scanning stage, so as to scan the detected object.
  • the advancing direction Z of the detected object is shown in Fig.
  • conveying direction of the detected object (hereinafter sometimes referred to as conveying direction or Z direction) is defined as the direction parallel to the advancing direction of the detected object, including the advancing direction and its reverse direction.
  • FIG. 1A also shows an XYZ coordinate system, which can be used as a reference coordinate system to describe the positions of the components in the radiation scanning device. These position descriptions are for clearly describing the principles of the present application and have no limiting effect.
  • the moving direction Z of the detected object is the same as the Z direction of the XYZ coordinate system.
  • the radiation scanning device shown in Figure 1A may also include a control device (not shown in the figure), which can control the operation of various components of the radiation scanning device, such as controlling the emission of radiation at each scanning level, the data output of the detector, etc. .
  • the control device can also include an image processing module, which can perform image reconstruction according to the output information of the detectors at each scanning level to obtain a scanned image of the detected object, thereby determining the internal information of the detected object.
  • each scanning stage of the radiation scanning device is arranged on a plurality of scanning planes along the conveying direction of the detected object.
  • the scanning planes are arranged at intervals of predetermined distances along the conveying direction of the object to be detected.
  • the distance can be set as small as possible, so as to reduce the optical path distribution length of the radiation scanning device.
  • Each scanning stage includes respective correspondingly arranged radiation source modules and detector groups.
  • the ray source module and the detector can be arranged in the same plane perpendicular to the Z direction, so that the ray exit of the ray source module is facing the crystal of the detector, so as to avoid the ray from being inclined relative to the crystal surface of the detector impact on the reconstructed image.
  • the ray source module and the detector can also be arranged in different planes perpendicular to the Z direction, that is, the ray source module and the detector can be offset from each other by a predetermined distance along the Z direction.
  • the ray source module includes a plurality of sources that emit ray beams.
  • the ray source module can be a distributed ray source, each ray source module has a plurality of target points, each target point can generate a ray beam independently, and the multiple target points can be generated according to a predetermined time sequence under the control of the control device beam of rays.
  • the beam of rays may be a fan beam with an aperture angle A, as shown in FIG. 2 .
  • the shape of the ray beam is not limited to a fan beam, and may also be a ray beam of other shapes such as a cone beam and a parallel beam, which may be specifically set as required.
  • the radiation source module is a linear distributed radiation source, that is, multiple target points are arranged in a straight line.
  • the ray source module may also be a zigzag or arc distributed ray source.
  • each ray source module may also be a ray source group including multiple single point sources.
  • the ray source modules are arranged in one direction of the scanning area, and the ray source modules in each scanning level are arranged in different directions of the scanning area, for example, respectively arranged on the left side of the scanning area ( First scanning level A), below (second scanning level B) and to the right (third scanning level C).
  • the radiation source modules of these scanning stages are arranged in a semi-closed structure surrounding the upper opening of the scanning area.
  • the semi-closed structure may be a U-shaped structure, a semi-circular structure, a semi-elliptical structure, etc. For example, as shown in FIG.
  • the radiation source modules of multiple scanning levels can be arranged in a U-shaped structure.
  • the multiple radiation source modules of the multiple scanning stages partially overlap the target points at adjacent ends. Specifically, taking the arrangement of the ray source modules shown in FIG.
  • the ray source module on the left side of the scanning area and the ray source module below the scanning area can be at adjacent ends (that is, The target points at the lower left corner of the U-shaped structure in the figure) partially overlap, and the ray source module on the right of the scanning area and the ray source module below the scanning area can target at adjacent ends (that is, the lower right corner of the U-shaped structure in the figure). Points partially overlap. In this way, it can be further ensured that the object to be detected is fully covered by the radiation, and the loss of projection data at the corresponding position at the end of the radiation source can be avoided, which is beneficial to improving image quality.
  • each scanning stage the detectors are arranged around the scanning area in at least two directions.
  • the detector surrounds the scanning area on the top and right, showing an L-shaped structure
  • the detector surrounds the scanning area on the top, left and right, showing a downward
  • the U-shaped structure of the opening and in the third scanning stage C, the detector surrounds the scanning area on the top and left, showing an L-shaped structure.
  • Arranging the detectors around the scanning area in at least two directions can ensure that the detectors can detect almost all rays passing through the object to be detected, thereby obtaining very comprehensive scanning data and ensuring image quality.
  • the detectors in the first scanning stage A and the third scanning stage C are arranged in an L-shaped structure, they can also be a U-shaped structure opening toward the radiation source module, so that it can be further ensured
  • the comprehensiveness of the scanned data is more conducive to improving the image quality.
  • the detector may include a plurality of detector groups, each detector group being a detector array including a plurality of detector units.
  • the detector array can be a linear, arc or zigzag detector array.
  • the detectors of each scanning stage are composed of a plurality of linear detector arrays.
  • the detector in the first scanning stage A and the third scanning stage C, the detector includes two detector groups, each detector group is a linear detector array; in the second scanning stage B, the detector includes three A detector group, each detector group is a linear detector array.
  • the detector group in the form of a linear detector array may adopt any suitable structure, and according to some embodiments, its specific structure may be as shown in FIG. 4 . As shown in FIG.
  • the detector group 30 includes a plurality of detector units 31 and a detector arm 32 , and the plurality of detector units 31 are arranged side by side along a straight line on the detector arm 32 .
  • the specific structure of the detector unit 31 can be as shown in FIG. 5 , and of course other suitable structures can also be adopted.
  • the detector unit 31 includes a detector crystal 311 for receiving radiation.
  • a plurality of detector units 31 are arranged side by side on the detector arm 32 with the detector crystals 311 facing the same direction.
  • the structure of the detector arm 32 is not limited to the embodiment shown in FIG. 5 , and other suitable structures (such as the detector arm structure shown in FIGS. 7A-9B ) can also be used.
  • the detector group of the ray scanning device of the present application is not limited to the form of a linear detector array, and may also be in the form of an arc detector array.
  • the arc detector array may comprise a plurality of arc detector units and arc detector arms, and the plurality of arc detector units are arranged side by side on the arc detector arms, wherein the detector crystals of the detector units face the same direction.
  • the radiation source module of the second scanning level B is arranged below the scanning area, so that the height of the conveying device can be increased compared with the equipment without the radiation source below the scanning area, thus, when When the X-ray scanning equipment is used in a baggage conveying system with a high conveyor belt height, it can facilitate the movement of luggage between the conveyor system and the X-ray scanning equipment.
  • the conveying device may be set to have the same height as the conveying belt of the baggage conveying system, further facilitating the movement of the baggage.
  • each radiation source module of each scanning level are disassembled and installed independently of each other, that is, each radiation source module has a separate cavity for accommodating its own radiation generating device.
  • Each radiation source module has an independent chamber, which means that multiple targets of each radiation source module share a single vacuum chamber.
  • each radiation source module uses a separate vacuum chamber, which can reduce the risk of sparking in the chamber during maintenance of the radiation source module risk.
  • the radiation source modules of each scanning level are provided with installation and positioning structures, so as to facilitate the installation and adjustment of the radiation source modules.
  • each radiation source module can be installed and fixed at a predetermined position in the radiation scanning device (for example, at a specific position in the radiation scanning device according to the XYZ reference coordinate system), so as to ensure that the radiation source module and the detection relative position of the device.
  • the radiation source module can also be rotated to adjust the beam-out angle of the radiation beam.
  • the installation positioning structure can The beam-out angle of the ray beam is adjusted so that the center of the ray beam irradiates the crystal plane of the detector group.
  • the radiation source modules of each scanning level can be installed in different ways due to their different positions in the radiation scanning device, and have different installation and positioning structures.
  • the ray source modules located on the left and right of the scanning area can be installed in a hoisting manner through equipment such as a crane.
  • the ray source module located below the scanning area is not suitable for hoisting, and needs to be installed in other ways.
  • embodiments of the present application provide an installation and positioning structure, which can easily install and fix radiation source modules that are not suitable for hoisting at a predetermined position of the radiation scanning equipment, and can also Rotate the ray source module to adjust the beam-out angle of the ray beam.
  • the installation and positioning structure includes a main body, which can be fixedly connected to the support frame of the radiation source module and the radiation scanning device (the support frame refers to the part of the radiation scanning device used to install and fix the radiation source, detector and other components. fixedly arranged supporting device), so that the radiation source module can be fixedly installed on the support frame through the main body, wherein the installation and positioning structure includes: a moving device, the radiation source module can pass through the moving device on the first plane (for example, in FIG. 1A XZ plane) is moved to a predetermined installation position; a first positioning device, which positions the radiation source module on the first plane; a lifting device, which is used to move along the first direction (for example, the Y direction in Fig. perpendicular to the XZ plane) to adjust the position of the radiation source module, wherein the first direction is perpendicular to the first plane; and a second positioning device, which is used to fix the position of the radiation source module in the first direction.
  • the installation and positioning structure includes: a moving device
  • the mounting and positioning structure includes main bodies 11 and 12.
  • the main bodies 11 and 12 are respectively located at both ends of the radiation source module 10 along the length direction, and are fixedly connected to the radiation source module 10.
  • the radiation source module 10 passes through
  • the main bodies 11 and 12 are fixedly installed on the supporting frame of the radiation scanning equipment.
  • the moving device for installing the positioning structure is specifically configured as rollers 13, 14, which are respectively arranged on the main bodies 11, 12, and the radiation source module 10 can be pushed through the rollers 13, 14 to move to a predetermined installation position on the XZ plane.
  • the moving device for installing the positioning structure is not limited to rollers.
  • the radiation source module can also be moved in a sliding manner. For example, a linear sliding fit can be set between the installation positioning structure and the support frame to move the radiation source The module 10 is moved to a predetermined installation position.
  • the first positioning device includes first positioning pins 15, 16 and corresponding first pin holes (not shown in the figure) respectively arranged on the main body 11, 12 and the support frame of the X-ray scanning equipment. After 13 and 14 are moved to the predetermined installation positions, the first positioning pins 15 and 16 are respectively inserted into the corresponding first pin holes, so that the radiation source module 10 can be positioned on the XZ plane.
  • the lifting device includes a roller 13 arranged at the main body 11, wherein the roller 13 is specifically configured as a liftable roller, and also includes a lifting jack wire 17 arranged on the main body 12, and one end of the lifting jack wire 17 abuts against the support frame , twisting and lifting the jack screw 17 can make the main body 12 and the radiation source module 10 rise or fall relative to the support frame.
  • the position of the radiation source module 10 relative to the support frame can be adjusted along the Y direction by adjusting the liftable roller 13 and the lift jack wire 17 .
  • the second positioning device is formed as positioning pads 19, 20.
  • the positioning pads 19, 20 are respectively placed on the Below the main bodies 11 and 12, the height of the radiation source module 10 relative to the support frame can be fixed, so that the radiation source module 10 can be positioned along the first direction Y.
  • the positioning block 20 below the main body 12 can be arranged in a U-shape, and the lower part of the lifting jack wire 17 is located in the opening of the U-shaped positioning block 20 to prevent the two from interfering with each other.
  • the installation and positioning structure may also include first fixing bolts 21, 22 and corresponding first threaded holes provided in the main bodies 11, 12, positioning spacers 19, 20 and the support frame, and the first fixing bolts 21, 22 are respectively inserted into Corresponding to the first threaded holes and tightening, the positioning pads 19, 20 can be fixed relative to the main bodies 11, 12 and the support frame, and the radiation source module 10 can be fixedly connected to the support frame.
  • the mounting and positioning structure further includes an adjustment device, which is used to rotate the radiation source module along a predetermined axis to adjust its beam output angle.
  • the radiation source module 10 is provided with a mounting shaft 27, the main bodies 11, 12 are respectively provided with shaft holes, and the main bodies 11, 12 are mounted on the mounting shaft 27 through the shaft holes; in addition, the installation positioning structure It also includes second positioning pins 23, 24.
  • the main bodies 11, 12 and the radiation source module 10 are respectively provided with second pin holes corresponding to the second positioning pins 23, 24.
  • the installation and positioning structure also includes second fixing bolts 25 and 26 for fixing and connecting the main bodies 11 and 12 relative to the radiation source module 10, and corresponding second threaded holes provided on the main bodies 11 and 12 and the radiation source module 10 , by screwing the second fixing bolts 25 , 26 into the corresponding second threaded holes, the main bodies 11 , 12 can be fixedly connected to the radiation source module 10 .
  • the adjustment device can drive the radiation source module 10 Rotate relative to the main bodies 11 and 12 around the mounting shaft 27 .
  • the adjustment device includes a rotation drive mechanism
  • the rotation drive mechanism includes an adjustment block 28 fixed on the radiation source module 10 and a top wire 29 arranged on the main body 11 and abutting against the adjustment block 28, the top wire 29 It can be screwed to push the adjustment block 28 to move so as to rotate the radiation source module 10 .
  • the rotation driving mechanism is only arranged on one main body of the mounting and positioning structure, that is, only on one end of the radiation source module 10 along the length direction. Since both ends of the radiation source module 10 are supported by the installation shaft 27, the radiation source module 10 is pushed to rotate at one end of the radiation source module 10, and the radiation source module 10 as a whole can rotate accordingly.
  • the main bodies 11 and 12 can be fixedly connected to the radiation source module 10 .
  • the installation axis 27 on the radiation source module 10 can coincide with the virtual connection line of multiple target points in the radiation source module 10, therefore, rotating the radiation source module 10 around the installation axis 27 can make the radiation source module 10 Rotate around the target axis.
  • the installation and positioning structure according to the above embodiment is described by taking the radiation source module 10 as an example, the above installation and positioning structure can be applied to the installation, positioning and adjustment of radiation sources of any suitable radiation scanning equipment.
  • the installation, positioning and adjustment of the radiation source module 10 are not limited to the installation and positioning structures of the above embodiments, and any other suitable structures may also be adopted.
  • the lifting device is realized by the lifting roller 13 and the lifting jack wire 17, but the lifting device is not limited to the specific structure of this embodiment, and can also be realized as other suitable structures , for example, lifting jackscrews are used on both main bodies for lifting.
  • the specific implementation of the moving device, the first positioning device, the second positioning device and the adjusting device are not limited to the specific structures in the above embodiments, and other suitable structures can be adopted as long as their functions can be realized.
  • each detector group of the detectors of each scan level is independently detachable and installable, thereby improving the maintainability of the detectors.
  • the radiation scanning device of the present application includes a mounting and fixing structure for a single detector group, by means of which, the detector group can be positioned relative to its installation position in the radiation scanning device (for example, the support of the radiation scanning device The frame) is moved to be removed from or installed to the installation position.
  • the installation and fixing structure of the detector group specifically includes a first installation part, which is fixedly arranged on the detector group; a second installation part, which is fixedly arranged on the support frame of the radiation scanning device, and Cooperate with the first installation part for linear movement, wherein the detector group can move to a predetermined installation position along the second installation part in the state where the first installation part and the second installation part cooperate with each other; and a fixing device, which is arranged on the detector group One side along the width direction is used to fix the detector group relative to the installation reference plane on the support frame.
  • the detector group is installed and fixed on the support frame of the radiation scanning equipment via the detector arm, wherein the first mounting part is fixedly arranged on the detector arm of the detector group, and the fixing device is arranged on the detector arm One side along the width direction, fix the detector arm to the support frame to fix the detector group.
  • FIGS. 7A-7D show the installation and fixing structure for the detector group 40 according to some specific embodiments, wherein FIG. 7A shows a perspective view of the detector group in the installed state, and FIG. 7B is a side view of the detector group in the installed state. Views, FIG. 7C is a perspective view of the detector group in a disassembled state, and FIG. 7D is a cross-sectional view of the detector group with a fixing device in an installed state.
  • the mounting and fixing structures shown in FIGS. 7A-7D are suitable for, for example, detector groups located above the scanning area in scanning stages A, B, and C.
  • FIG. 7A-7D show the installation and fixing structure for the detector group 40 according to some specific embodiments, wherein FIG. 7A shows a perspective view of the detector group in the installed state, and FIG. 7B is a side view of the detector group in the installed state. Views, FIG. 7C is a perspective view of the detector group in a disassembled state, and FIG. 7D is a cross-
  • the detector group located above the scanning area can be moved perpendicular to the conveying direction of the detected object for disassembly or installation, and can be fixed on the side of the detector along the conveying direction of the detected object or adjust.
  • the first installation part of the installation and fixing structure of the detector group 40 includes a slider 42 arranged on the detector arm 41, and the slider 42 extends along the length direction of the detector arm 41, wherein the detector
  • the length direction of the detector arm 41 is perpendicular to the conveying direction of the detected object, and the width direction is consistent with the conveying direction of the detected object.
  • the slider 42 extends over a part of the length of the detector arm 41 .
  • the slider 42 can also be configured to extend over the entire length of the detector arm 41 or other lengths.
  • the slider 42 may be fixed to the probe arm 41 by bolting or the like. According to other embodiments, the slider 42 can also be integrally formed with the detector arm 41 .
  • the second mounting portion is formed as a fixed guide rail 43 matched with the slider 42 .
  • the fixed guide rail 43 is fixedly connected to the support frame (not shown in FIG. 7A ) of the radiation scanning device, and may also be integrally formed with the support frame.
  • the length direction of the fixed guide rail 43 is perpendicular to the conveying direction of the detected object of the radiation scanning device.
  • One end of the fixed guide rail 43 along the length direction can be provided with a limiting part (not shown in the figure).
  • the fixing device is arranged on one side of the detector group 40 along the width direction, and abuts against the surface 44 of the detector arm 41 on one side along the width direction.
  • the fixing device includes a positioning piece 45 and a fastener 46, wherein the positioning piece 45 is fixedly connected to the support frame, and its end face away from the support frame is formed as an installation reference surface 47, which is used to abut against the detection A surface 44 of one side of the arm 41 in the width direction.
  • the surface 44 is the installation surface of the detector arm 41, and it and the installation reference plane 47 are all processed to have good flatness, so that when the installation surface 44 of the detector arm 41 is fixed against the installation reference plane 47, it can be fixed in the width direction.
  • the fastener 46 may pass through the positioning piece 45 and fasten the detector group 40 relative to the end surface of the positioning piece 45 (ie, the installation reference surface 47 ).
  • the fastening member 46 may be a fastening bolt, for example, and a corresponding threaded hole is provided on the side of the positioning piece 45 and the detector arm 41 opposite to the positioning piece 45, and the fastening bolt 46 is passed through the corresponding threaded hole and By tightening, the detector group 40 can be fastened relative to the end surface of the positioning member 45 (ie, the installation reference surface 47 ).
  • Multiple fixing devices such as at least two, can be provided along the length direction of the detector group 40 to securely fix the detector group 40 on the support frame.
  • the detector group 40 when installing the detector group 40, in the state where the detector unit of the detector group 40 faces downward, first align the slider 42 on the detector group 40 with the fixed guide rail 43, so that the detector The group 40 moves along the fixed guide rail 43 until it abuts against the limit part on the fixed guide rail 43; then, the fastening bolt 46 passes through the corresponding threaded hole on the positioning piece 45 and the detector arm 41 and is tightened, thereby the detector group 40 is positioned relative to the end surface of the positioning member 45 , that is, the installation reference surface 47 .
  • the reverse operation can be performed.
  • the detector group 40 Since the length direction of the fixed guide rail is perpendicular to the conveying direction of the detected object of the radiation scanning device, and the side of the detector group 40 along the X direction is not obstructed by the radiation source, the detector group 40 It can be disassembled or installed relative to the support frame perpendicular to the conveying direction of the detected object of the ray scanning device.
  • the fixing device is arranged on one side of the detector group along the width direction, that is, the side of the detector along the Z direction, which facilitates The detector group is fixed or adjusted; therefore, the detector group can be easily disassembled and maintained by means of the installation and fixing structure according to the above-mentioned embodiment.
  • the second installation part is configured to support the detector group 40 at a predetermined installation position in a state of being matched with the first installation part.
  • the slider 42 is disposed on opposite sides of the detector arm 41 in the width direction, and has inner extensions 421, 422 extending inwardly from the edges of the detector arm 41 on the two sides opposite in the width direction (see Fig. 7B);
  • the fixed guide rail 43 comprises outwardly extending extensions 431, 432 (see Fig. 7B) on both sides opposite along the width direction;
  • the inner extensions 421 , 422 of the rail 42 are located above the outer extensions 431 , 432 of the fixed guide rail 43 and are in contact with and overlapped.
  • the detector set 40 can be suspended on the outer extensions 431 , 432 of the fixed guide rail 43 through the inner extensions 421 , 422 of the slider 42 .
  • the fixed guide rail 43 can support the detector group 40 at the predetermined installation position without requiring other additional auxiliary structures or tools, and when the detector group 40 is fastened, the operator does not need to fix the detector group 40 It can be operated with support, thereby improving the convenience of operation.
  • the linear movement cooperation between the first installation part and the second installation part adopts the slider guide rail cooperation.
  • other linear movement cooperation can also be used, such as linear sliding or linear rolling Coordination, etc., such as linear ball bearings and cylindrical shafts, etc.
  • FIG. 8A-8D show fixed installation structures for detector groups according to other embodiments, wherein FIG. 8A shows a perspective view of the detector group in an installed state, and FIG. 8B shows the first installation part and the first installation part of the fixed structure. A schematic view of the second mounting part in a separated state.
  • FIG. 8C and FIG. 8D are perspective views of different viewing angles when the first mounting part and the second mounting part of the mounting and fixing structure are mated.
  • the installation and fixing structures shown in FIGS. 8A-8D are suitable for, for example, detector groups located on the left or right of the scanning area in scanning levels A, B, and C.
  • the detector group located on the left or right of the scanning area can be moved perpendicular to the conveying direction of the object to be detected for disassembly or installation, and can be fixed on the side of the detector along the Z direction or adjust.
  • the first mounting portion of the mounting and fixing structure of the detector group 50 is specifically formed as a fixing block 52 disposed on one side of the detector arm 51 along the width direction, and the fixing block 52 has a side facing the detector arm 51 along the thickness direction. side opening 53 .
  • the width direction of the detector arm 51 is consistent with the conveying direction of the detected object of the radiation scanning device, and the length direction and thickness direction are perpendicular to the conveying direction of the detected object.
  • the opening 53 of the fixing block 52 can be U-shaped or other suitable shapes.
  • the fixed block 52 can be fixedly connected on the detector arm 51 by means of bolt fixing or the like, and can also be integrally formed with the detector arm 51.
  • the second mounting part is formed as a cantilever part 54 fixed on the support frame of the radiation scanning device, and an extension part 55 is provided at the end of the cantilever part 54 away from the support frame, and the extension part 55 moves linearly with the opening 53 on the fixed block 52 fit, that is, the extension part 55 can move linearly from the edge of the opening 53 to the inside of the opening 53 .
  • the length direction of the cantilever portion 54 is consistent with the conveying direction of the detected object of the radiation scanning device.
  • the bottom of the opening 53 can be used as a stopper.
  • the fixing device is arranged on one side of the detector arm 51 along the width direction (disposed on the same side as the fixing block 52), the end face of the fixing device is formed as a mounting reference plane, and the fixing device fastens the detector arm 51 relative to the mounting reference plane .
  • the fixing device may include a fixing piece 56 and a fastener 57, and the end surface of the fixing piece 56 away from the support frame is formed as a mounting reference surface 58, which is used to abut against the surface of one side of the detector arm 51 along the width direction. 59.
  • the surface 59 is the installation surface of the detector arm 51, which is processed to have good flatness with the installation reference surface 58.
  • the fastener 57 is used to fasten the detector arm 51 relative to the end face 58 of the fixing piece 56 .
  • the fastening member 57 can be a fixing bolt, and a corresponding threaded hole is formed on the opposite side of the detector arm 51 along the width direction with the fixing member 56 and the fixing member 56, and the fixing bolt can pass through the fixing member 56 and the detector arm 51 and tighten the corresponding threaded holes to fasten the detector set 50 relative to the installation reference plane 58 .
  • the fixing device may include multiple, for example at least two, and the multiple fixing devices may be arranged at intervals along the length direction of the detector set 50 to securely fix and position the detector set 50 .
  • the opening 53 of the fixed block 52 on the detector group 50 is Align the extension 55 of the cantilever portion 54, move the detector group 50 along the extension 55 until the bottom of the opening 53 abuts against the extension 55; then, pass the fastener 57 through the fixing member 56 and the detector arm 51 Corresponding threaded holes and tightened, so that the detector group 50 is positioned relative to the installation reference surface 58 of the fixing member 56 .
  • dismounting detector group 50 carry out opposite operation and get final product.
  • the cantilever portion 54 extends along the conveying direction of the detected object in the radiation scanning device, the width direction of the detector group 50 is parallel to the conveying direction of the detected object, and the opening 53 of the fixed block 52 Towards the side of the thickness direction of the detector group 50, by making the detector crystal face the scanning area and the length direction of the detector arm along the Y direction, the detector group 50 can be installed or removed along the direction perpendicular to the conveying direction of the detected object.
  • the fixing device is arranged on one side of the detector group 50 along the width direction, that is, the side of the detector along the Z direction, which is convenient for fixing or adjusting the detector group. Therefore, by means of the installation and fixing according to the above-mentioned embodiments The structure can facilitate the disassembly and maintenance of the detector group.
  • the second installation part is configured to support the detector group 50 at a predetermined installation position in a state of being matched with the first installation part. That is, the cantilever part 54 can support the entire detector group 50 through the fixing block 52 after the detector group 50 is moved to a predetermined installation position relative to the extension part 55 of the cantilever part 54 without other auxiliary structures or tools. In this way, when the detector group 50 is fastened, it can be operated without additional tools and without the operator supporting the detector group 50 , thereby improving the convenience of operation.
  • the detector group in the radiation scanning device of the present application can be disassembled or installed relative to the support frame along the conveying direction perpendicular to the object to be detected, and can be One side of the conveying direction can be fixed or adjusted, so it can be easily disassembled and maintained.
  • the detector group is installed or removed perpendicular to the conveying direction of the object to be detected.
  • such an operation is inconvenient.
  • the detector group of the second scanning level B for example, the detector group located on the left side of the scanning area close to the radiation source module of the first scanning level A, can be arranged relative to the The installation position, such as the installation or removal of the support frame, thus, the detector group can be disassembled, fixed or adjusted without dismantling the radiation source module, which improves its operation convenience.
  • different installation and fixing structures are required for such a disassembly method. Specific embodiments of such a mounting and fixing structure will be described in detail below.
  • the installation and fixing structure suitable for disassembling and installing the detector group along the conveying direction of the object to be detected also specifically includes a first installation part, which is fixedly arranged on the detector group; part, which is fixedly arranged on the support frame of the X-ray scanning equipment, and cooperates with the first installation part for linear movement, wherein the detector group can move along the second installation part under the condition that the first installation part and the second installation part cooperate with each other to a predetermined installation position; and a fixing device, which is arranged on one side of the detector group along the width direction, and is used to fix the detector group relative to the installation reference plane on the support frame.
  • the detector group is installed and fixed on the support frame of the radiation scanning equipment via the detector arm, wherein the first mounting part is fixedly arranged on the detector arm, and the fixing device is arranged on the detector arm along the width direction side, which secures the detector arm to the support frame to hold the detector group.
  • FIGS. 9A-9B show the installation and fixing structure of the detector group according to some specific embodiments, wherein FIG. 9A shows an exploded perspective view of the detector arm and the installation and fixing structure, and FIG. 9B is a detection under the fixed state of the detector group. Partial cross-sectional view of the arm.
  • the complete detector group is not shown in Figures 9A and 9B, only the detector arm, where multiple detector units can be arranged side by side lengthwise on the illustrated detector arm to form a complete detector group .
  • the first installation portion of the installation and fixing structure of the detector group 60 is specifically formed as a slide groove 62 extending in the width direction of the detector arm 61 , wherein, when installed to the support frame of the radiation scanning device In the state, the width direction of the detector arm 61 is consistent with the conveying direction of the detected object, and the length direction is perpendicular to the conveying direction of the detected object.
  • the second mounting portion is formed as a sliding rod 63 matched with the sliding groove 62 .
  • the chute 62 is formed as a semicircular open chute, and the sliding rod 63 is correspondingly formed as a cylindrical sliding rod.
  • the sliding rod 63 is fixedly arranged on the support frame, or is integrally formed with the support frame, and its length direction is consistent with the conveying direction of the object to be detected.
  • One end of the sliding rod 63 close to the supporting frame is arranged to increase in size relative to the rest of the sliding rod 63 to form a protrusion 64 .
  • the end surface of the convex portion 64 facing the probe arm 61 is formed as a mounting reference surface 65 for abutting against a surface 66 of the probe arm 61 on one side in the width direction.
  • the surface 66 is the installation surface of the detector arm 61, which is processed to have good flatness with the installation reference plane 65.
  • the protrusion 64 can also be used as a stopper.
  • the fixing device is provided on the other end of the sliding rod 63 opposite to the convex portion 64, and is arranged to abut against the convex portion 64 on both sides of the detector arm 61 in the width direction, thereby limiting the width of the detector arm 61 in the width direction.
  • the fixing device includes a positioning sleeve 67 and a fastener 68.
  • the positioning sleeve 67 is sleeved on the other end of the sliding rod 63 opposite to the convex portion 64 and abuts against the other side of the detector arm 61 along the width direction.
  • the fastener 68 fixes the positioning sleeve 67 to the other end of the sliding rod 63 opposite to the protrusion 64 .
  • the fastener 68 can be a fastening screw, and the positioning sleeve 67 and the other end of the sliding rod 63 are provided with threaded holes, and the fastening screw is screwed in the threaded hole to tighten the fastening screw relative to the sliding rod 63.
  • the positioning sleeve 67 is fixed to fix the detector arm 61 in the width direction relative to the slide bar 63 (ie, the support frame). At the same time, since the shape fit between the sliding rod 63 and the sliding groove 62 limits the degree of freedom of the detector arm 61, the detector arm 61 can be completely positioned and fixed.
  • the slide bar 63 extends along the conveying direction of the detected object, that is, the linear movement between the detector group and the support frame is coordinated along the conveying direction of the detected object, and the fixing device is arranged on the detector group.
  • One side along the width direction, and the width direction of the detector group is consistent with the conveying direction of the object to be detected.
  • the detector group can be moved along the conveying direction of the detected object to be installed or disassembled, and can be fixed or adjusted on one side along the conveying direction of the detected object, therefore, the detector group can Disassembly or maintenance from the side along the conveying direction of the detected object, even if the detector is obstructed by radiation sources of other scanning levels along the outside perpendicular to the conveying direction, its disassembly or maintenance can avoid radiation
  • the obstruction of the source is performed without dismantling the radiation source, thereby improving the convenience of disassembly and maintenance of the detector.
  • the second installation part of the above-mentioned installation and fixing structure is configured to support the detector group 60 at a predetermined installation position in a state of being matched with the first installation part.
  • the second mounting part includes two sliding rods 63, and two sliding grooves 62 are formed on the detector arm 61 correspondingly, which are arranged at both ends of the detector arm 61 along the length direction, so that the detector arm 61 After the two slide bars 63 are moved to the predetermined installation position, the two slide bars 63 can support the detector group at the predetermined installation position without needing other auxiliary structures and/or tools. In this way, when the detector group is fastened, it can be operated without additional tools and without the operator supporting the detector group, thereby improving the convenience of operation.
  • the above-mentioned installation and fixing structure is not limited to the installation and removal of the detector group arranged vertically in the radiation scanning equipment, and the detectors arranged in other directions Groups can also use the aforementioned mounting fixtures.
  • the installation and fixing structure between the detector group 60 and the supporting frame is not limited to the embodiments shown in FIGS. 9A-9B , and other suitable installation and fixing structures can also be used.
  • the linear movement The fit can be other suitable fits, such as linear rolling fits such as the fit between a linear ball bearing and a cylindrical shaft.
  • the cross section of the chute 62 is not limited to a semicircle, but can be a semi-rectangular shape, and accordingly,
  • the slide bar 63 is not limited to a cylinder, and may also be in a shape such as a prism matched with the slide groove 62 .
  • the detector group of the radiation scanning device can be arranged to be disassembled or maintained along the conveying direction of the object to be detected, thereby facilitating disassembly and maintenance.
  • the embodiments of the present application are not limited to disassembly or installation only along the conveying direction of the detected object or only in a manner perpendicular to the conveying direction of the detected object, and part of the detector group can also be Disassembly or installation, and the other part of the detector group is disassembled or installed in the direction perpendicular to the conveying direction of the object to be detected.
  • the specific method can be determined according to the specific layout of the X-ray scanning equipment, as long as it can be easily disassembled and maintained. .
  • each detector group located in different directions of the scanning area of each scanning stage may adopt different installation and fixing structures to be disassembled or installed relative to the support frame, however, with the help of the installation reference planes for different detector groups, the same scanning stage After installation, each detector group can be located at a predetermined position along the conveying direction of the detected object to ensure that it is located in the same plane perpendicular to the Z direction, or located in a different plane perpendicular to the Z direction offset by a predetermined distance , as long as the installation reference planes of the detector groups of the same scanning level are correspondingly set in the same plane perpendicular to the Z direction, or in different planes perpendicular to the Z direction offset by a predetermined distance.
  • mounting and fixing structures of the above-mentioned embodiments are not limited to be used for the detector group of the radiation scanning device of the present application, and may also be used for the detector group of other suitable radiation scanning devices.
  • the radiation scanning device further includes a control device configured to control the beam emitting sequence of the radiation source modules in each scanning stage.
  • the control device may be configured such that the radiation source modules of each scanning level respectively have a source point to emit beams simultaneously.
  • the ray source module of the first scanning level A includes target points A1, A2, A3,...An
  • the ray source module of the second scanning level B includes target points B1, B2, B3,...Bn
  • the ray source module of C includes target points C1, C2, C3, ... Cn.
  • the control device can control the target points of the radiation source modules of scanning levels A, B, and C to output beams simultaneously in the following order: A1B1C1 ⁇ A2B2C2 ⁇ A3B3C3 ⁇ ...AnBnCn.
  • the control device is not limited to controlling the target points of multiple radiation source modules to output beams at the same time in the above order, that is, the order of the target points in each radiation source module is not limited to the order from target point 1 to target point n, on the contrary, it can be spaced, Reverse order or random, as long as all targets in the ray source module can be traversed.
  • the radiation source modules in each scanning stage emit beams simultaneously, which can speed up the scanning speed of the radiation scanning device. Therefore, when the X-ray scanning equipment is applied to the baggage conveying system, etc., the scanning speed can match the high-speed baggage conveying speed of the baggage conveying system, avoiding the backlog of baggage caused by security checks, and improving the baggage conveying speed.
  • the conveying device of the radiation scanning device may be set to be at the same speed as the conveying belt of the baggage conveying system.
  • the radiation dose can also be reduced (for example, under the condition of constant voltage
  • the current can be one-third of the size of the circulating output beam), thereby reducing the radiation shielding requirements of the X-ray scanning equipment and helping to reduce the equipment cost.
  • the radiation beams of the radiation source modules of each scan level have different energies.
  • the ray source module is optionally configured to emit ray beams with different energies for different sizes of the detected object in each direction. For example, when the object to be detected is airport luggage, it is usually smaller in the thickness direction (that is, the up-and-down direction of the ray scanning device, and the Y direction in FIG.
  • the left and right direction, the X direction in Figure 1A) size is relatively large, therefore, in order to obtain a higher penetration rate in the width direction, the ray source module arranged on the left or right of the scanning area (for example, the first scanning
  • the ray source module of level A and the ray source module of the third scanning level C) can emit ray beams with higher energy to ensure the ray penetration rate in the width direction, increase the effective data detected by the detector, and thus have It is beneficial to improve the image quality; correspondingly, the ray source module arranged under the scanning area (for example, the ray source module of the second scanning level B) can emit radiation with a lower High-energy ray beams, which can reduce the radiation dose while ensuring the ray penetration rate.
  • Embodiments of the present application also provide a ray scanning system for baggage inspection, which includes the ray scanning device and the baggage conveying system described in any of the above embodiments.
  • the baggage conveying system is used for conveying a plurality of baggage at airports and other places, and includes a conveyor belt for carrying the baggage.
  • the ray scanning device is used to scan a plurality of luggage in the luggage conveying system, so as to check prohibited items in the luggage and the like.
  • the radiation scanning device may be arranged at the beginning, middle or end of the baggage conveying system, and the conveyor of the radiation scanning device is arranged adjacent to the conveyor of the baggage conveying system, so that the baggage can move between the two.
  • the ray scanning device has a ray source module arranged under the conveying device, so that the conveying device has a higher height from the ground, etc., so as to match the height of the conveyor belt of the baggage conveying speed, optionally, the height of the conveyor belt of the baggage conveying system same.
  • the ray scanning device includes a control device, which is configured so that the ray source modules of each scanning level have a target point to emit beams at the same time to scan the baggage, so that the ray scanning device can move at a speed comparable to that of the baggage conveying system.
  • the matched detection speed detects objects to be detected such as luggage, and optionally, the speed of the conveying device of the radiation scanning device is the same as the speed of the conveyor belt of the luggage conveying speed. Therefore, the ray scanning system according to the present application can conveniently transfer luggage between the luggage conveying system and the ray scanning equipment, and can perform security inspection on luggage at a relatively fast speed.
  • Embodiments of the present application also provide an installation and positioning structure for a radiation source and a radiation scanning device as defined in the following items.
  • An installation and positioning structure for a radiation source of a radiation scanning device includes a radiation source and a fixedly arranged support frame
  • the installation and positioning structure includes a main body, and the main body can be fixedly connected to the radiation a source and the supporting frame, so that the radiation source can be fixedly installed on the supporting frame through the main body
  • the installation positioning structure also includes:
  • a moving device through which the radiation source can be moved to a predetermined installation position on the first plane
  • a first positioning device configured to position the radiation source on the first plane
  • a lifting device for adjusting the position of the radiation source along a first direction, wherein the first direction is perpendicular to the first plane;
  • the second positioning device is used for fixing the position of the radiation source in the first direction.
  • the moving device includes rollers arranged at both ends of the radiation source along the length direction.
  • the first positioning device includes a first positioning pin and a first pin hole corresponding to the first positioning pin provided on the main body and the support frame.
  • the lifting device is arranged at both ends of the radiation source along the length direction, wherein the lifting device at one end is formed as a liftable roller, and the lifting device at the other end is formed as a lifting jack wire.
  • the second positioning device is formed as a positioning spacer, and the positioning spacer is placed under the main body after the radiation source is adjusted to a predetermined position along the first direction by the lifting device.
  • An adjusting device is used to rotate the ray source along a predetermined axis to adjust the beam output angle of the ray source.
  • the radiation source is provided with a mounting shaft, the main body is provided with a corresponding shaft hole, and the main body is mounted on the mounting shaft of the radiation source through the shaft hole;
  • the positioning installation structure also includes a positioning piece and a fastener, the main body is positioned relative to the radiation source through the cooperation of the positioning piece and the shaft hole with the installation shaft, and is fixed by the fastener connected to said radiation source;
  • the adjustment device includes a rotation drive device, which can drive the radiation source to rotate around the installation axis when the positioning member and the fastening member are loosened.
  • the rotation driving device includes an adjustment block fixed on the radiation source and a jacking wire arranged on the main body that abuts against the adjustment block, and the jacking wire can be rotated to push the adjustment block to move so as to Rotate the radiation source.
  • the locating member includes a second locating pin and a corresponding second pin hole formed on the main body and the radiation source, and the fastener includes a fixing bolt and is formed on the main body and the radiation source. the corresponding threaded holes.
  • a radiation scanning device comprising a radiation source and a fixed support frame, the radiation source is fixedly installed on the support frame via the installation and positioning structure described in any one of items 1-9.
  • Embodiments of the present application also provide a detector installation and fixing structure and a radiation scanning device as defined in the following items.
  • An installation and fixing structure for a detector of a radiation scanning device includes the detector and a fixed support frame, the detector includes at least two detector groups, the The detector group is fixedly installed on or disassembled from the support frame via the installation and fixing structure, and the installation and fixing structure includes:
  • the second installation part is fixedly arranged on the support frame and can be linearly moved and matched with the first installation part, and the detector group is in a state where the first installation part and the second installation part cooperate with each other the bottom can move to a predetermined installation position along the second installation part;
  • a fixing device which is arranged on one side of the detector group along the width direction, is used for fixing the detector group relative to the installation reference plane on the support frame.
  • the second installation part is further configured to support the detector group at the predetermined installation position in a state of being matched with the first installation part.
  • the first installation part includes a slider extending along the length direction of the detector group, and the second installation part includes a fixed guide rail matched with the slider.
  • the fixing device includes a fastener and a positioning piece arranged on the support frame, and the end surface of the positioning piece away from the support frame is formed as the installation reference surface for abutting against the detector group.
  • the fastener passes through the positioning piece and fastens the detector group relative to the end surface of the positioning piece.
  • the slider is disposed on opposite sides of the detector group along the width direction, and has inward extensions extending inward from edges of the detector group on opposite sides along the width direction;
  • the fixed guide rail includes extensions extending outward on opposite sides along the width direction;
  • the inner extension part of the slider is located above the outer extension part of the fixed guide rail and both are in contact with and overlapped so that the detection The device group is suspended on the fixed guide rail.
  • the first mounting part is formed as a sliding groove extending along the width direction of the detector group, and the second mounting part is formed as a sliding rod matched with the sliding groove.
  • a protruding portion is formed at one end of the sliding rod close to the support frame, and the surface of the protruding portion facing the detector group is formed as the installation reference plane for abutting against the width of the detector group The surface on the other side of the direction.
  • the fixing device is arranged at the other end of the sliding rod opposite to the convex part, and is arranged to respectively abut against the two sides of the detector group in the width direction with the convex part.
  • the fixing device includes a positioning sleeve and a fastener, the positioning sleeve is sleeved on the other end of the slide bar and abuts against the one side of the detector along the width direction, and the fastening A piece is used to fix the positioning sleeve to the other end of the sliding rod.
  • the second installation part includes two sliding rods
  • the first installation part includes two sliding grooves formed at both ends of the detector group along the length direction, and the two sliding rods are connected with the two sliding grooves.
  • the grooves cooperate with each other respectively to group the detectors at the predetermined installation positions.
  • the first mounting portion is formed as a fixing block fixed on the one side of the detector group in the width direction, the fixing block having an opening toward one side of the detector group in the thickness direction;
  • the second installation part is formed as a cantilever part fixed on the support frame, an extension part is provided on the end part of the cantilever part away from the support frame, and the extension part can be connected with the opening of the fixing block Linear move mate.
  • the fixing device includes a fixing piece and a fastener arranged on the support frame, and the end surface of the fixing piece away from the support frame is formed as the installation reference surface for abutting against the detector group.
  • the surface of the one side along the width direction, and the fastener is used to fasten the detector group relative to the end surface of the fixing member.
  • the cantilever part supports the detector group at the predetermined installation position through the fixing block.
  • a ray scanning device which includes a detector and a fixed support frame, the detector includes at least two detector groups, and the detector groups are passed as described in any one of items 1-13
  • the installation and fixing structure is installed and fixed on the support frame or removed from the support frame.
  • the width direction of the detector group is parallel to the conveying direction of the detected object
  • the length direction and thickness direction of the detector group are perpendicular to the conveying direction of the detected object
  • the conveying direction of the detected object is the detected object The direction in which objects are transported through the scanning area of the radiation scanning device.
  • the mounting reference planes for the respective detector groups lie in a plane perpendicular to the conveying direction of the objects to be detected.
  • the direction in which the first mounting part moves linearly relative to the second mounting part is parallel or perpendicular to the conveying direction of the detected object.

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Abstract

一种用于行李输送系统的射线扫描设备，包括：传送装置，其运送被检测物体通过射线扫描设备的扫描区域；多个扫描级，其分别布置在被检测物体的输送方向的多个扫描平面上，每个扫描级包括相对布置的射线源模块（10）和探测器组（30），并且射线源模块（10）包括发射射线束的多个源点，其中，多个扫描级的射线源模块（10）分别布置在扫描区域的下方、左方和右方。

Description

射线扫描设备及射线扫描系统
相关申请的交叉引用
本申请要求享有于2021年07月07日提交的名称为“射线扫描设备及射线扫描系统”的中国专利申请202110769688.X的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及辐射成像领域，具体地涉及一种用于行李输送系统的射线扫描设备及用于行李检查的射线扫描系统。
背景技术
射线扫描技术由于能够消除物体重叠的影响，在安全检查中可以发挥重要的作用。传统的射线扫描设备采用滑环装置通过X光机和探测器的旋转来获取不同角度上的投影数据，通过重建方法来获取断层图像，从而获得被检测行李物品的内部信息。配合双能或多能成像技术，目前的行李物品检查设备可以对被检物质的原子序数和电子密度进行重建，从而实现物质种类的识别，在爆炸物、危险品等检测中起到了很好的效果。
发明内容
现有的安检射线扫描设备依然面临一些不足。例如，当前的机场行李输送系统通常具有较高的行李输送速度以满足时效性，这就要求安检设备相应地具备较高的检测速度，而提高检测速度有可能会带来辐射增大、成本上升等问题。
本申请针对上述问题，提供了一种用于行李输送系统的射线扫描设备，其包括传送装置，其运送被检测物体通过射线扫描设备的扫描区域；和多 个扫描级，其分别布置在被检测物体的输送方向的多个扫描平面上，每个扫描级包括相对布置的射线源模块和探测器组，并且射线源模块包括发射射线束的多个源点，其中，多个扫描级的射线源模块分别布置在扫描区域的下方、左方和右方。
本申请的实施例还提供了一种用于行李检查的射线扫描系统，其包括本申请实施例的射线扫描设备以及行李输送系统，行李输送系统包括用于输送行李的传送带，其中射线扫描设备的传送装置与传送带的高度和速度相匹配。
本申请的实施例提供了一种射线扫描设备的射线源的安装定位结构，射线扫描设备包括射线源以及固定设置的支撑框架，安装定位结构包括主体，主体能够固定连接到射线源和支撑框架，使得射线源能够通过主体固定安装到支撑框架上，安装定位结构还包括：移动装置，射线源能够通过移动装置在第一平面上被移动到预定安装位置；第一定位装置，其用于在第一平面上对射线源进行定位；升降装置，其用于沿第一方向调节射线源的位置，其中第一方向垂直于第一平面；以及第二定位装置，其用于在第一方向上固定射线源的位置。
利用根据上述实施例的安装定位结构，射线扫描设备的各个射线源可单独拆卸和安装，还能够调节射线源的出束角度。
本申请的实施例还提供了一种用于射线扫描设备的探测器的安装固定结构，射线扫描设备包括探测器和固定设置的支撑框架，探测器包括一个或多个探测器组，探测器组经由安装固定结构固定安装到支撑框架上或从支撑框架上拆卸，安装固定结构包括：第一安装部，其固定设置在探测器组上；第二安装部，其固定设置在支撑框架上并且能够与第一安装部直线移动配合，探测器组在第一安装部与第二安装部相互配合的状态下能够沿第二安装部移动到预定安装位置；以及固定装置，其设置在探测器组的沿宽度方向的一侧，用于相对于支撑框架上的安装基准面固定探测器组。
利用根据上述实施例的安装固定结构，探测器的各个探测器组可单独拆卸和安装，能够根据需要设置成沿被检测物体的输送方向或输送方向的垂直方向进行拆装和维护，提高了探测器组的拆装和维护的便利性。
本申请的其他特征和技术优势将在下面参考附图和其他实施例的详细描述中更加清楚明白。
附图说明
图1A示出了根据本申请的实施例的射线扫描设备的整体结构示意图。
图1B和1C示出了根据本申请的实施例的射线扫描设备的第二扫描级和第三扫描级的射线源模块和探测器的结构示意图。
图2示出了根据本申请的实施例的射线源的射线束的形状示意图。
图3A和3B示出了根据本申请的实施例的从被检测物体的输送方向观察到的射线源模块的靶点分布示意图。
图4示出了根据本申请的实施例的探测器组的结构示意图。
图5示出了根据本申请的实施例的探测器单元的结构示意图。
图6A-6C示出了根据本申请的实施例的射线源模块的安装定位结构的示意图。
图7A-7D示出了根据本申请的一些实施例的探测器组的安装固定结构的示意图。
图8A-8D示出了根据本申请的又一些实施例的探测器组的安装固定结构的示意图。
图9A-9B示出了根据本申请的另一些实施例的探测器组的安装固定结构的示意图。
具体实施方式
为了清楚地描述本申请要解决的技术问题、技术方案及有益效果，以下结合附图及实施例对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限制本申请的范围。
针对现有技术中的技术问题，本申请的实施例提供了一种用于行李输送系统的射线扫描设备。该射线扫描设备包括运送被检测物体通过射线扫描设备的扫描区域的传送装置，以及布置在沿被检测物体的输送方向的多个扫描平面上的多个扫描级，每个扫描级包括相应的射线源模块和探测器。 在被检测物体被传送装置承载通过扫描区域的过程中，多个扫描级对被检测物体进行扫描并且产生相应的数字信号。射线扫描设备还可以包括控制装置，该控制装置可以基于各个扫描级所产生的数字信号进行图像重建，从而得到被检测物体的内部信息。在本文中，被检测物体是行李、包裹等需要安全检查的物品，扫描区域由各个扫描级的射线源模块和探测器限定。
具体地，每个扫描级均包括相对布置的射线源模块和探测器，这里，每个扫描级的每个射线源模块均包括发射射线束的多个源点，其中，多个扫描级的多个射线源模块分别布置在扫描区域的下方、左方和右方，并且可选地，沿被检测物体的输送方向观察，多个扫描级的多个射线源模块形成围绕扫描区域的上方开口的半封闭结构。由于存在至少一个扫描级，其射线源模块布置在扫描区域的下方，本申请的射线扫描设备的传送装置可设置成距离放置射线扫描设备的表面(例如地面等)具有较高的高度，从而可以与位于射线扫描设备的上游或下游的具有较高高度的被检测物体输送线(例如，行李输送系统等)的高度相匹配(例如与行李输送系统的传送带的高度相同)。此外，在本文中，扫描区域的上方、下方、左方和右方是指沿被检测物体的输送方向观察时扫描区域的上方、下方、左方和右方。
此外，各个扫描级的探测器分别布置成与射线源模块相对且布置成能够接收穿过被检测物体的几乎全部射线。由此，根据本申请的射线扫描设备可以得到非常全面的扫描数据，保证图像质量。这样，虽然本申请仅在扫描区域的三侧上布置射线源，但是相对于在扫描区域四侧上布置射线源的情况，仍然可以保证图像质量，且可以节省射线源成本。此外，在扫描区域上方不布置射线源模块，还可以方便射线源模块的维护。
此外，控制装置连接到各个扫描级，并且控制各个扫描级的射线源模块的源点的出束顺序，特别是使得各个扫描级的射线源模块分别有一个源点同时出束。由此，可以提高射线扫描设备的扫描速度，相应地提高检测速度，使得射线扫描设备可以与位于射线扫描设备的上游或下游的具有较高输送速度的被检测物体输送线(例如行李输送系统等)的相匹配(例如，传送装置的速度与行李输送系统的传送带的速度相同)。
此外，各个扫描级的射线源模块可设置成发射不同能量的射线束，可选地，使位于扫描区域左方或右方的射线源模块与位于扫描区域下方的射线源模块相比发射具有更高能量的射线束。这样，在检测厚度较小宽度较大的行李物品时，可以保证射线在行李宽度方向上的穿透率，增加探测器可检测到的射线数量，从而提高图像质量。
下面参考附图详细描述本申请的实施例。
图1A-1C示意性地示出了根据本申请的一些实施例的射线扫描设备的结构示意图。图1A示出了射线扫描设备的总体结构示意图，图1B和图1C分别示出了图1A中的射线扫描设备的第二扫描级和第三扫描级的结构示意图。如图所示，射线扫描设备包括多个扫描级(例如，第一扫描级A，第二扫描级B和第三扫描级C)、通道110以及传送装置，其中第一扫描级A虽然未单独示出，但是第一扫描级A与第三扫描级C对称布置，传送装置也在图中未示出，但传送装置在通道110中靠近通道110的下表面布置并且延伸穿过通道110。每个扫描级均包括各自的射线源模块和探测器。传送装置运送被检测物体通过各个扫描级的扫描区域，以对被检测物体进行扫描。图1A中示出了被检测物体的前进方向Z，被检测物体的输送方向(后文有时简称输送方向或Z向)定义为被检测物体的前进方向的平行方向，包括前进方向及其反向方向。图1A中还示出了XYZ坐标系，其可作为参考坐标系对射线扫描设备中的部件的位置进行描述，这些位置描述是为了清楚描述本申请的原理，并无限定作用。被检测物体的前进方向Z与该XYZ坐标系的Z向相同。
图1A所示的射线扫描设备还可以包括控制装置(图中未示出)，控制装置可控制射线扫描设备的各个部件的操作，例如控制各个扫描级的射线的发射、探测器的数据输出等。控制装置还可以包括图像处理模块，该图像处理模块可以根据各个扫描级的探测器的输出信息进行图像重建，得到被检测物体的扫描图像，从而确定被检测物体的内部信息。
根据具体实施例，射线扫描设备的各个扫描级布置在沿着被检测物体的输送方向的多个扫描平面上。各个扫描平面沿被检测物体的输送方向按照预定距离间隔设置。这里，在各个扫描级的光路和/或部件不相互干涉的 情况下，该距离可设置得越小越好，以减小射线扫描设备的光路分布长度。
每个扫描级包括各自的对应布置的射线源模块和探测器组。在每个扫描级中，射线源模块和探测器可布置在垂直于Z向的同一平面内，使得射线源模块的射线出口正对探测器的晶体，以避免射线相对于探测器的晶体表面倾斜对重建图像造成的影响。当然，根据其他实施例，射线源模块和探测器也可以布置在垂直于Z向的不同平面内，即，射线源模块和探测器可以沿Z向相互偏移预定距离。
射线源模块包括发射射线束的多个源点。具体地，射线源模块可以是分布式射线源，每个射线源模块具有多个靶点，每个靶点可单独产生射线束，并且多个靶点可以在控制装置的控制下按照预定时序产生射线束。射线束可以是具有张角A的扇形束，如图2所示。当然，射线束的形状不限于扇形束，可以也是锥形束、平行束等其他形状的射线束，可以根据需要具体设置。可选地，射线源模块是直线分布式射线源，即多个靶点直线排列。根据其他实施例，射线源模块也可以是折线形或弧形分布式射线源。或者，每个射线源模块也可以是包括多个单点源的射线源组。
此外，在各个扫描级中，射线源模块均布置在扫描区域的一个方向上，并且各个扫描级中的射线源模块布置在扫描区域的不同方向上，例如，分别布置在扫描区域的左方(第一扫描级A)、下方(第二扫描级B)和右方(第三扫描级C)。可选地，沿被检测物体的输送方向观察，这些扫描级的射线源模块布置成围绕扫描区域的上方开口的半封闭结构。取决于射线源模块的形状(直线形、折线形或弧形等)，该半封闭结构可以是U型结构、半圆形结构、半椭圆形结构等。例如，如图3A和图3B所示，在射线源模块为直线形或折线形的情况下，沿被检测物体的输送方向观察，多个扫描级的射线源模块可布置成U型结构。此外，可选地，沿被检测物体的输送方向观察，多个扫描级的多个射线源模块在相邻的端部处靶点部分重叠。具体地，以图3A所示射线源模块布置为例，沿被检测物体的输送方向观察，扫描区域左方的射线源模块和扫描区域下方的射线源模块可在相邻端部处(即，图中U型结构的左下角)靶点部分重叠，扫描区域右方的射线源模块和扫描区域下方的射线源模块可在相邻端部处(即，图中U 型结构的右下角)靶点部分重叠。这样，可进一步确保被检测物体被射线全部覆盖，避免射线源端部对应位置处的投影数据缺失，有利于提高图像质量。
此外，在各个扫描级中，探测器均布置成至少在两个方向上围绕扫描区域。例如，在第一扫描级A中，探测器在上方和右方围绕扫描区域，呈L型结构；在第二扫描级B中，探测器在上方、左方和右方围绕扫描区域，呈下方开口的U型结构，并且在第三扫描级C中，探测器在上方和左方围绕扫描区域，呈L型结构。将探测器布置成至少在两个方向上围绕扫描区域布置，可以确保探测器能够检测到穿过被检测物体的几乎全部射线，从而得到非常全面的扫描数据，保证图像质量。此外，虽然在图1A中，第一扫描级A和第三扫描级C中的探测器呈L型结构布置，但是，其也可以为朝向射线源模块开口的U型结构，这样，可以进一步确保扫描数据的全面性，更有利于提高图像质量。
探测器可以包括多个探测器组，每个探测器组是包括多个探测器单元的探测器阵列。探测器阵列可以是直线形、弧形或折线形探测器阵列。在图1A-1C所示的实施例中，每个扫描级的探测器由多个直线探测器阵列构成。例如，在第一扫描级A和第三扫描级C中，探测器包括两个探测器组，每个探测器组均为直线探测器阵列；在第二扫描级B中，探测器包括三个探测器组，每个探测器组均为直线探测器阵列。这里，直线探测器阵列形式的探测器组可以采用任何适合的结构，并且根据一些实施例，其具体结构可以如图4所示。如图4所示，探测器组30包括多个探测器单元31和探测器臂32，多个探测器单元31在探测器臂32上沿直线并排布置。探测器单元31的具体结构可以如图5所示，当然也可以采用其他适合的结构。如图5所示，探测器单元31包括用于接收射线的探测器晶体311。多个探测器单元31以探测器晶体311朝向相同的方向在探测器臂32上并排布置。探测器臂32的结构不限于图5所示的实施例，也可以采用其他适合的结构(如图7A-9B所示的探测器臂结构)。本申请的射线扫描设备的探测器组不限于直线探测器阵列的形式，还可以是弧形探测器阵列的形式。弧形探测器阵列可以包括多个弧形探测器单元和弧形探测器臂，多个弧形探测器 单元并排布置在弧形探测器臂上，其中，探测器单元的探测器晶体朝向相同的方向。
在上述实施例的射线扫描设备中，第二扫描级B的射线源模块布置在扫描区域的下方，使得相对于在扫描区域下方不设置射线源的设备可以提高传送装置的高度，由此，当射线扫描设备应用于传送带高度较高的行李输送系统等中时，可以方便行李在输送系统和射线扫描设备之间的移动。这里，可选地，传送装置可以设置成具有与行李输送系统的传送带具有相同的高度，进一步方便行李的移动。
在上述实施例中，各个扫描级的射线源模块是相互独立拆卸和安装的，即，每个射线源模块具有单独的腔体以用于容纳各自的射线发生装置。每个射线源模块具有单独的腔体意味着各个射线源模块的多个靶点共用一个单独的真空腔。这具有如下优点：相对于一体式环形腔体的射线源(即，射线源的所有靶点均位于同一个环形真空腔体内)，可以缩小单个射线源模块的外壳尺寸以及内部真空腔体的体积，使单个射线源模块体积减小、重量减轻，因此方便射线源的拆卸和安装；另外，每个射线源模块采用单独的真空腔体，可以降低对射线源模块进行维护时腔内打火的风险。
根据一些实施例，各个扫描级的射线源模块设置有安装定位结构，以便于射线源模块的安装和调节。借助于安装定位结构，各个射线源模块可安装和固定在射线扫描设备中的预定位置处(例如，射线扫描设备中根据XYZ参考坐标系的某个具体位置处)，以确保射线源模块和探测器的相对位置。此外，借助于安装定位结构，射线源模块还可以被旋转以调节射线束的出束角度，这样在射线源模块和探测器位于垂直于Z向的不同平面内的情况下，可以通过安装定位结构调节射线束的出束角度，使得射线束的中心照射探测器组的晶体平面。
各个扫描级的射线源模块由于在射线扫描设备中的位置不同可采用不同的安装方式，具有不同的安装定位结构。例如，位于扫描区域左方和右方的射线源模块可通过天车等设备采用吊装的方式进行安装。但是，位于扫描区域下方的射线源模块不适于采用吊装的方式，需要采用其他的方式进行安装。为了方便这样的射线源模块的安装，本申请的实施例提供了一 种安装定位结构，其能够方便地将不适于吊装的射线源模块安装和固定在射线扫描设备的预定位置处，且还能够对射线源模块进行转动以调节射线束的出束角度。根据一些实施例，该安装定位结构包括主体，该主体能够固定连接到射线源模块和射线扫描设备的支撑框架(支撑框架是指射线扫描设备的用于安装和固定射线源、探测器等部件的固定设置的支撑装置)上，使得射线源模块能够通过主体固定安装到支撑框架，其中该安装定位结构包括：移动装置，射线源模块能够通过该移动装置在第一平面(例如，图1A中的XZ平面)上被移动到预定安装位置；第一定位装置，其在第一平面上对射线源模块进行定位；升降装置，其用于沿第一方向(例如，图1A中的Y方向，其垂直于XZ平面)调节射线源模块的位置，其中第一方向垂直于第一平面；以及第二定位装置，其用于在第一方向上固定射线源模块的位置。
图6A-6C示出了射线源模块10的安装定位结构的一个具体实施例。如图6A-6C所示，安装定位结构包括主体11、12，主体11、12分别位于射线源模块10的沿长度方向的两端，并且固定连接到射线源模块10上，射线源模块10经由主体11、12固定安装到射线扫描设备的支撑框架上。安装定位结构的移动装置具体地设置成滚轮13、14，分别设置在主体11、12上，射线源模块10可经由滚轮13、14被推动，从而在XZ平面上移动到预定安装位置。当然，安装定位结构的移动装置不限于滚轮，根据其他实施例，也可以采用滑动的方式来移动射线源模块，例如，可以在安装定位结构与支撑框架之间设置直线滑动配合，以将射线源模块10移动到预定安装位置处。
第一定位装置包括第一定位销15、16以及分别设置在主体11、12和射线扫描设备的支撑框架上的对应的第一销孔(图中未示出)，在射线源模块10经由滚轮13、14被移动到预定安装位置之后，将第一定位销15、16分别插入对应的第一销孔中，即可将射线源模块10在XZ平面上定位。
升降装置包括设置在主体11处的滚轮13，其中滚轮13具体地被设置成可升降滚轮，并且还包括设置在主体12上的起升顶丝17，起升顶丝17的一端抵靠支撑框架，旋拧起升顶丝17可使得主体12以及射线源模块10 相对于支撑框架提升或下降。通过调节可升降滚轮13和起升顶丝17，可沿Y方向调节射线源模块10相对于支撑框架的位置。第二定位装置形成为定位垫块19、20，在通过调节可升降滚轮13和起升顶丝17沿Y方向将射线源模块10调节到预定位置之后，将定位垫块19、20分别放置在主体11、12的下方，可以固定射线源模块10相对于支撑框架的高度，从而将射线源模块10沿第一方向Y定位。这里，可选地，主体12下方的定位垫块20可设置成U型形状，起升顶丝17的下部位于U型定位垫块20的开口中，以防止两者相互妨碍。此外，安装定位结构还可以包括第一固定螺栓21、22以及设置在主体11、12、定位垫块19、20和支撑框架中对应的第一螺纹孔，将第一固定螺栓21、22分别插入对应的第一螺纹孔并拧紧，可相对于主体11、12和支撑框架固定定位垫块19、20，并且可以将射线源模块10固定连接到支撑框架。
此外，根据一些实施例，安装定位结构还包括调节装置，该调节装置用于沿预定轴线转动射线源模块以调节其出束角度。根据图6A-6C的具体实施例，射线源模块10设置有安装轴27，主体11、12上分别设置有轴孔，主体11、12通过轴孔安装在安装轴27上；此外，安装定位结构还包括第二定位销23、24，主体11、12和射线源模块10上分别设置有对应于第二定位销23、24的第二销孔，通过将主体11、12的轴孔配合在安装轴27上，并且将第二定位销23、24分别插入到对应的第二销孔中，可使得主体11、12相对于射线源模块10定位。此外，安装定位结构还包括用于相对于射线源模块10固定连接主体11、12的第二固定螺栓25、26，以及设置在主体11、12和射线源模块10上的对应的第二螺纹孔，通过将第二固定螺栓25、26旋入对应的第二螺纹孔中，可将主体11、12相对于射线源模块10固定连接。而拔出第二定位销23、24并且松开第二固定螺栓25、26，可使得主体11、12相对于射线源模块10松开，在这种状态下，调节装置可驱动射线源模块10绕安装轴27相对于主体11、12转动。
在具体实施例中，调节装置包括转动驱动机构，该转动驱动机构包括固定在射线源模块10上的调节块28以及设置在主体11上的与调节块28相抵靠的顶丝29，顶丝29能够被旋拧以推动调节块28移动从而使射线源 模块10转动。这里，转动驱动机构仅设置在安装定位结构的一个主体上，即，仅设置在射线源模块10的沿长度方向的一端。由于射线源模块10的两端均通过安装轴27支撑，在射线源模块10的一端推动射线源模块10转动，射线源模块10整体可相应地转动。在使射线源模块10转过预定角度后，再次将第二定位销23、24插入对应的第二销孔中，并且再次将第二固定螺栓25、26旋入对应的第二螺纹孔中，可将主体11、12相对于射线源模块10固定连接。
在上述实施例中，射线源模块10上的安装轴27可以与射线源模块10中的多个靶点的虚拟连线重合，因此，绕安装轴27转动射线源模块10可以使得射线源模块10绕靶轴转动。
此外，虽然以射线源模块10为例描述了根据上述实施例的安装定位结构，但是，上述安装定位结构可适用于任何适合的射线扫描设备的射线源的安装、定位和调节。当然，射线源模块10的安装、定位和调节也不限于上述实施例的安装定位结构，也可采用任何其他适合的结构。例如，在图6A-6C所示的实施例中，升降装置由可升降滚轮13和起升顶丝17实现，但是，升降装置不限于该实施例的具体结构，也可以实现为其他适合的结构，例如在两个主体上均采用起升顶丝来进行升降。同样地，移动装置、第一定位装置、第二定位装置和调节装置的具体实施均不限于上述实施例中的具体结构，都可以采用其他适合的结构，只要能够实现其功能即可。
根据一些实施例，各个扫描级的探测器的各个探测器组是可独立拆卸和安装的，由此，可改善探测器的可维护性。此外，本申请的射线扫描设备包括用于单个探测器组的安装固定结构，借助于该安装固定结构，探测器组可以相对于其在射线扫描设备中的安装位置(例如，射线扫描设备的支撑框架)移动以从所述安装位置拆卸或安装到该安装位置。
下面，详细描述根据本申请的一些实施例的用于探测器组的安装固定结构。根据本申请的一些实施例的探测器组的安装固定结构具体地包括第一安装部，其固定设置在探测器组上；第二安装部，其固定设置在射线扫描设备的支撑框架上，且与第一安装部直线移动配合，其中探测器组在第一安装部与第二安装部相互配合的状态下能够沿第二安装部移动到预定安 装位置；以及固定装置，其设置在探测器组的沿宽度方向的一侧，用于相对于所述支撑框架上的安装基准面固定探测器组。在一些具体实施例中，探测器组经由探测器臂安装固定到射线扫描设备的支撑框架上，其中，第一安装部固定设置在探测器组的探测器臂上，固定装置设置在探测器臂的沿宽度方向的一侧，将探测器臂固定到支撑框架上以固定探测器组。
图7A-7D示出了根据一些具体实施例的用于探测器组40的安装固定结构，其中图7A示出了探测器组安装状态下的立体图，图7B是探测器组安装状态下的侧视图，图7C是探测器组拆卸状态下的立体图，以及图7D是带有固定装置的探测器组安装状态下的截面图。图7A-7D所示的安装固定结构适用于例如，扫描级A、B、C中的位于扫描区域上方的探测器组。借助于该实施例的安装固定结构，位于扫描区域上方的探测器组可垂直于被检测物体的输送方向移动以拆卸或安装，并且可以在探测器的沿被检测物体的输送方向的侧面进行固定或调整。
如图7A所示，探测器组40的安装固定结构的第一安装部包括设置在探测器臂41上的滑块42上，滑块42沿探测器臂41的长度方向延伸，其中在探测器组40安装到射线扫描设备中的状态下，探测器臂41的长度方向垂直于被检测物体的输送方向，且宽度方向与被检测物体的输送方向一致。在图7A中，滑块42延伸过探测器臂41的长度的一部分，在其他实施例中，滑块42也可以设置成延伸过探测器臂41的全部长度或其他长度。此外，滑块42可以通过螺栓连接等固定到探测器臂41上。根据其他实施例，滑块42也可以与探测器臂41一体成型。
第二安装部形成为与滑块42相配合的固定导轨43。固定导轨43固定连接在射线扫描设备的支撑框架(图7A中未示出)上，也可以与支撑框架一体成型。固定导轨43的长度方向垂直于射线扫描设备的被检测物体的输送方向。固定导轨43沿长度方向的一端可以设置限位部分(图中未示出)，当安装探测器组40时，将滑块42对准固定导轨43，并沿着固定导轨43推动探测器组40，直到探测器臂41抵靠限位部分，从而将探测器组40移动到预定安装位置。
固定装置设置在探测器组40的沿宽度方向的一侧，并且与探测器臂41 的沿宽度方向的一侧的表面44相抵靠。具体地，固定装置包括定位件45和紧固件46，其中定位件45固定连接在支撑框架上，并且其远离支撑框架的端面形成为安装基准面47，该安装基准面47用于抵靠探测器臂41的沿宽度方向的一侧的表面44。表面44是探测器臂41的安装表面，其与安装基准面47均被加工成具有良好的平面度，使得当探测器臂41的安装表面44抵靠安装基准面47固定时，可在宽度方向上，即被检测物体的输送方向上准确地定位探测器组40。紧固件46可以穿过定位件45，并且相对于定位件45的端面(即，安装基准面47)紧固探测器组40。具体地，紧固件46例如可以是紧固螺栓，定位件45和探测器臂41的与定位件45相对的侧面上设置有对应的螺纹孔，将紧固螺栓46穿过对应的螺纹孔并拧紧，可以相对于定位件45的端面(即，安装基准面47)紧固探测器组40。固定装置可以沿探测器组40的长度方向设置多个，例如至少两个，以将探测器组40牢固地固定在支撑框架上。
通过上述安装固定结构，在安装探测器组40时，在探测器组40的探测器单元朝下的状态下，首先将探测器组40上的滑块42的对准固定导轨43，使探测器组40沿固定导轨43移动直到抵靠固定导轨43上的限位部分为止；然后，将紧固螺栓46穿过定位件45和探测器臂41上的对应螺纹孔并拧紧，从而将探测器组40相对于定位件45的端面、即安装基准面47定位。在拆卸探测器组40时，进行相反的操作即可。
由于固定导轨的长度方向垂直于射线扫描设备的被检测物体的输送方向，且探测器组40的沿X方向的一侧没有射线源的阻碍，因此，借助于上述安装固定结构，探测器组40可以垂直于射线扫描设备的被检测物体的输送方向相对于支撑框架拆卸或安装，此外，固定装置设置在探测器组的沿宽度方向的一侧，即探测器的沿Z向的一侧，便于对探测器组进行固定或调整；因此，借助于根据上述实施例的安装固定结构，可以方便地对探测器组进行拆装和维护。
此外，可选地，在上述安装固定结构中，第二安装部被配置成在与第一安装部相配合的状态下，将探测器组40支撑在预定安装位置。具体地，滑块42设置在探测器臂41的沿宽度方向相对的两侧，并且具有从探测器 臂41的沿宽度方向相对的两侧的边缘向内延伸的内延部421、422(参见图7B)；固定导轨43包括在沿宽度方向相对的两侧上向外延伸的外延部431、432(参见图7B)；并且，在滑块42与固定导轨43相配合的状态下，滑块42的内延部421、422位于固定导轨43的外延部431、432的上方并且两者接触且重叠布置。由此，在探测器组40沿着固定导轨43移动到预定安装位置之后，探测器组40可以通过滑块42的内延部421、422悬挂在固定导轨43的外延部431、432上。这样，固定导轨43可以将探测器组40支撑在预定安装位置处，而不需要其他额外的辅助结构或工具，在对探测器组40进行紧固时，也不需要操作人员对探测器组40进行扶持即可进行操作，从而改善了操作便利性。
此外，在上述安装固定结构中，第一安装部与第二安装部之间的直线移动配合采用滑块导轨配合，根据其他实施例，也可以采用其他的直线移动配合，例如直线滑动或直线滚动配合等，例如直线滚珠轴承与圆柱轴配合等。
以上实施例的安装固定结构适用于位于扫描区域上方的探测器组。图8A-8D示出了根据另一些实施例的用于探测器组的固定安装结构，其中图8A示出了探测器组安装状态下的立体图，图8B是安装固定结构的第一安装部和第二安装部分开状态下的示意图，图8C和图8D是安装固定结构的第一安装部和第二安装部配合状态下的不同视角的立体图。
图8A-8D所示的安装固定结构适用于例如，扫描级A、B、C中的位于扫描区域左方或右方的探测器组。借助于该实施例的安装固定结构，位于扫描区域左方或右方的探测器组可垂直于被检测物体的输送方向移动以拆卸或安装，并且可以在探测器的沿Z向的侧面进行固定或调整。
探测器组50的安装固定结构的第一安装部具体地形成为设置在探测器臂51的沿宽度方向的一侧上的固定块52，固定块52具有朝向探测器臂51的沿厚度方向的一侧的开口53。在探测器组50的安装状态下，探测器臂51的宽度方向与射线扫描设备的被检测物体的输送方向一致，长度方向和厚度方向垂直于被检测物体的输送方向。固定块52的开口53可以呈U型，也可以是其他适合的形状。固定块52可以通过螺栓固定等方式固定连接在 探测器臂51上，也可以与探测器臂51一体形成。
第二安装部形成为固定在射线扫描设备的支撑框架上的悬臂部54，悬臂部54的远离支撑框架的端部设置有延伸部55，该延伸部55与固定块52上的开口53直线移动配合，即，延伸部55能够从开口53的边缘处沿直线移动到开口53的内部。悬臂部54的长度方向与射线扫描设备的被检测物体的输送方向一致。开口53的底部可用作限位部分，当安装探测器组50时，将探测器臂51上的固定块52的开口53对准延伸部55，并且相对于延伸部55沿直线移动探测器臂51直到开口53的底部抵靠延伸部55，从而将探测器组50限定在预定安装位置。
固定装置设置在探测器臂51的沿宽度方向的一侧(与固定块52设置在同一侧)，固定装置的端面形成为安装基准面，并且固定装置相对于安装基准面紧固探测器臂51。具体地，固定装置可以包括固定件56和紧固件57，固定件56的远离支撑框架的端面形成为安装基准面58，其用于抵靠探测器臂51的沿宽度方向的一侧的表面59。表面59是探测器臂51的安装表面，其与安装基准面58均被加工成具有良好的平面度，当探测器臂51的安装表面59抵靠安装基准面58固定时，可在被检测物体的输送方向上准确地定位探测器组50。紧固件57用于相对于固定件56的端面58紧固探测器臂51。紧固件57可以是固定螺栓，探测器臂51的沿宽度方向的与固定件56相对的一侧和固定件56上形成有对应的螺纹孔，固定螺栓可以穿过固定件56和探测器臂51上的对应的螺纹孔并拧紧，以相对于安装基准面58紧固探测器组50。此外，固定装置可以包括多个，例如至少两个，多个固定装置可以沿探测器组50的长度方向间隔布置，以将探测器组50牢固地固定和定位。
通过上述安装固定结构，在安装探测器组50时，在探测器单元朝向扫描区域且宽度方向与被检测物体的输送方向一致的状态下，首先将探测器组50上的固定块52的开口53对准悬臂部54的延伸部55，使探测器组50沿延伸部55移动直到开口53的底部抵靠延伸部55为止；然后，将紧固件57穿过固定件56和探测器臂51上的对应螺纹孔并拧紧，从而将探测器组50相对于固定件56的安装基准面58定位。在拆卸探测器组50时，进行相 反的操作即可。
由此，利用上述安装固定结构，由于悬臂部54在射线扫描设备中沿被检测物体的输送方向延伸，探测器组50的宽度方向平行于被检测物体的输送方向，且固定块52的开口53朝向探测器组50的厚度方向一侧，通过使得探测器晶体朝向扫描区域且使探测器臂长度方向沿Y向，可以沿垂直于被检测物体的输送方向安装或拆卸探测器组50。此外，固定装置设置在探测器组50的沿宽度方向的一侧，即探测器的沿Z向的一侧，便于对探测器组进行固定或调整.因此，借助于根据上述实施例的安装固定结构，可以方便地对探测器组的拆装和维护。
此外，可选地，在上述安装固定结构中，第二安装部被配置成在与第一安装部相配合的状态下，将探测器组50支撑在预定安装位置处。即，悬臂部54在探测器组50相对于悬臂部54的延伸部55移动到预定安装位置之后，可以通过固定块52支撑整个探测器组50，而不需要其他辅助结构或工具。这样，在对探测器组50进行紧固时，不需要额外的工具也不需要操作人员对探测器组50进行扶持即可进行操作，从而改善了操作便利性。
由此，借助于上述各个实施例的安装固定结构，本申请的射线扫描设备中的探测器组可以沿垂直于被检测物体的输送方向相对于支撑框架拆卸或安装，并且可以在沿被检测物体的输送方向的一侧进行固定或调整，因此可以方便地拆装和维护。
如上所述，以上述实施例的安装固定结构，探测器组垂直于被检测物体的输送方向安装或拆卸。然而，在有些情况下，这样的操作并不方便。如前文所提到的，希望扫描级之间的距离在光路和/或部件不相互干涉的情况下设置得越小越好，以减小射线扫描设备的光路分布长度。在这样的前提下，由于射线源模块的尺寸比探测器大(特别是在Z向上)，且射线源模块相对于其他扫描级的同侧探测器在被检测物体的输送方向的垂直方向上位于外侧，因此，沿垂直于被检测物体的垂直方向安装或拆卸探测器组有可能会受到相邻扫描级的射线源模块的妨碍(如图1A所示，第一扫描级A的射线源模块有可能会妨碍第二扫描级B的探测器组的拆卸和安装)。在这种情况下，第二扫描级B的探测器组，例如靠近第一扫描级A的射线 源模块的位于扫描区域左方的探测器组，可设置为沿被检测物体的输送方向相对于安装位置，例如支撑框架安装或拆卸，由此，可以在不需要拆卸射线源模块的情况下拆装、固定或调节探测器组，提高其操作便利性。相应地，针对这样的拆装方式，需要不同的安装固定结构。下面将详细描述这样的安装固定结构的具体实施例。
与前述实施例的安装固定结构类似，适于沿被检测物体的输送方向拆卸和安装探测器组的安装固定结构也具体地包括第一安装部，其固定设置在探测器组上；第二安装部，其固定设置在射线扫描设备的支撑框架上，且与第一安装部直线移动配合，其中探测器组在第一安装部与第二安装部相互配合的状态下能够沿第二安装部移动到预定安装位置；以及固定装置，其设置在探测器组的沿宽度方向的一侧，用于相对于支撑框架上的安装基准面固定探测器组。在一些具体实施例中，探测器组经由探测器臂安装固定到射线扫描设备的支撑框架上，其中，第一安装部固定设置在探测器臂上，固定装置设置在探测器臂的沿宽度方向的一侧，其将探测器臂固定到支撑框架上以固定探测器组。
图9A-9B示出了根据一些具体实施例的探测器组的安装固定结构，其中图9A示出了探测器臂以及安装固定结构的分解立体图，图9B是探测器组安装固定状态下的探测器臂的局部剖视图。图9A和9B中未示出完整的探测器组，仅示出了探测器臂，其中多个探测器单元可以在所示出的探测器臂上沿长度方向并排布置以形成完整的探测器组。
如图9A和9B所示，探测器组60的安装固定结构的第一安装部具体地形成为在探测器臂61的宽度方向上延伸的滑槽62，其中，在安装到射线扫描设备的支撑框架的状态下探测器臂61的宽度方向与被检测物体的输送方向相一致，长度方向与被检测物体的输送方向垂直。第二安装部形成为与滑槽62相配合的滑杆63。滑槽62形成为半圆形开口滑槽，滑杆63相应地形成为圆柱形滑杆。滑杆63固定设置在支撑框架上，或者与支撑框架一体形成，其长度方向与被检测物体的输送方向一致。滑杆63靠近支撑框架的一端设置成相对于滑杆63的其余部分尺寸增大，以形成凸部64。凸部64的朝向探测器臂61的端面形成为安装基准面65，用于抵靠探测器臂 61的沿宽度方向的一侧的表面66。表面66是探测器臂61的安装表面，其与安装基准面65均被加工成具有良好的平面度，当探测器组的安装表面66抵靠安装基准面65定位时，可在宽度方向上，即被检测物体的输送方向上准确地定位探测器组60。凸部64还可用作限位部分，在安装探测器组60时，将滑槽62对准滑杆63并沿着滑杆63朝向支撑框架推动探测器臂61，直到探测器臂61抵靠凸部64，从而可以将探测器臂60移动到预定安装位置。
固定装置设置在滑杆63的与凸部64相对的另一端，并且布置成与凸部64分别抵靠探测器臂61的沿宽度方向的两侧，从而在宽度方向上限定探测器臂61的位置。具体地，固定装置包括定位套67和紧固件68，定位套67套设在滑杆63的与凸部64相对的另一端上并且抵靠探测器臂61的沿宽度方向的另一侧的表面69，紧固件68将定位套67固定到滑杆63的与凸部64相对的另一端上。具体地，紧固件68可以为紧固螺钉，定位套67和滑杆63的所述另一端上均设置有螺纹孔，通过将紧固螺钉旋拧在螺纹孔中来相对于滑杆63紧固定位套67，从而相对于滑杆63(即支撑框架)在宽度方向上固定探测器臂61。同时，由于滑杆63与滑槽62的形状配合限制了探测器臂61的自由度，探测器臂61可以被完全定位和固定。
通过上述安装固定结构，在安装探测器组60时，在探测器单元面向扫描区域且宽度方向与被检测物体的输送方向一致的状态下，首先将探测器臂61的滑槽62对准滑杆63，使探测器臂61沿滑杆63移动直到抵靠凸部64为止；然后，将定位套67套设在滑杆63的与凸部64相对的一端，并用螺钉将其相对于滑杆63固定，从而固定探测器臂61。在拆卸探测器组60时，进行相反的操作即可。
通过上述安装固定结构，由于滑杆63沿被检测物体的输送方向延伸，即，探测器组与支撑框架之间的直线移动配合沿被检测物体的输送方向，并且固定装置设置在探测器组的沿宽度方向的一侧，而探测器组的宽度方向与被检测物体的输送方向一致。因此，借助于上述安装固定结构，探测器组能够沿被检测物体的输送方向移动以安装或拆卸，且可以在沿被检测物体的输送方向的一侧进行固定或调整，因此，探测器组可以从沿被检测 物体的输送方向的侧面来拆装或维护，即使在探测器沿垂直于输送方向的外侧受到其他扫描级的射线源的妨碍的情况下，其拆装或维护也能够避开射线源的妨碍，在不需要拆卸所述射线源的情况下进行，从而改善了探测器的拆装和维护的便利性。
此外，可选地，上述安装固定结构的第二安装部被配置成在与第一安装部相配合的状态下将探测器组60支撑在预定安装位置处。具体地，第二安装部包括两个滑杆63，探测器臂61上相应地形成有两个滑槽62，其设置在探测器臂61的沿长度方向的两端，使得探测器臂61在两个滑杆63上移动到预定安装位置之后，两个滑杆63可以将探测器组支撑在预定安装位置处，而不需要其他的辅助结构和/或工具。这样，在对探测器组进行紧固时，不需要额外的工具也不需要操作人员对探测器组进行扶持即可进行操作，从而改善了操作便利性。
虽然在图9A和9B中探测器臂示出为竖直方向，但上述安装固定结构并不限于仅用于射线扫描设备中竖直布置的探测器组的安装和拆卸，其他方向布置的探测器组也可以使用上述安装固定结构。
当然，探测器组60与支撑框架之间的安装固定结构不限于图9A-9B所示的实施例，也可以采用其他适合的安装固定结构，例如，根据一些实施例，安装固定结构的直线移动配合可以是其他适合的配合，例如直线滚珠轴承与圆柱轴的配合等直线滚动配合，根据另一些实施例，滑槽62的截面不限于半圆形，可以是半矩形等形状，并且相应地，滑杆63也不限于圆柱体，还可以是与滑槽62相配合的棱柱等形状。
由此，根据本申请的射线扫描设备的探测器组可以设置成沿被检测物体的输送方向来拆装或维护，从而方便拆装和维护。
但是，本申请的实施例不限于仅采用沿被检测物体的输送方向或仅采用沿垂直于被检测物体的输送方向的方式来拆卸或安装，也可以部分探测器组沿被检测物体的输送方向拆卸或安装，另一部分探测器组沿垂直于被检测物体的输送方向的方向拆卸或安装，具体采用哪种方式可根据射线扫描设备的具体布局而定，只要可以方便地拆装和维护即可。
此外，虽然各个扫描级的位于扫描区域的不同方向上的探测器组可能 采用不同的安装固定结构相对于支撑框架拆卸或安装，但是，借助于针对不同探测器组的安装基准面，同一扫描级的各个探测器组可以在安装后，位于沿被检测物体的输送方向的预定位置，以确保位于垂直于Z向的同一平面内，或者位于以预定距离偏移的垂直于Z向的不同平面内，只要相应地将同一扫描级的各个探测器组的安装基准面设置在垂直于Z向的同一平面内，或以预定距离偏移的垂直于Z向的不同平面内即可。
此外，上述各个实施例的安装固定结构不限于用于本申请的射线扫描设备的探测器组，也可以用于其他适合的射线扫描设备的探测器组。
如前所述，根据本申请的实施例的射线扫描设备还包括控制装置，控制装置配置成控制各个扫描级中的射线源模块的出束顺序。可选地，控制装置可以配置成使得各个扫描级的射线源模块分别有一个源点同时出束。例如，第一扫描级A的射线源模块包括靶点A1，A2，A3，……An；第二扫描级B的射线源模块包括靶点B1，B2，B3，……Bn，第三扫描级C的射线源模块包括靶点C1，C2，C3，……Cn。控制装置可以以如下顺序控制扫描级A、B、C的射线源模块的靶点同时出束：A1B1C1→A2B2C2→A3B3C3→…AnBnCn。控制装置不限于以上述顺序控制多个射线源模块的靶点同时出束，即在各个射线源模块中靶点的顺序不限于从靶点1到靶点n的顺序，相反可以是间隔的、倒序的或随机的，只要可以遍历射线源模块中的所有靶点即可。
根据上述实施例，各个扫描级中的射线源模块同时出束，可以加快射线扫描设备的扫描速度。由此，当射线扫描设备应用于行李输送系统等时，扫描速度可以与行李输送系统的高速行李传送速度相匹配，避免由于安全检查造成行李的积压，有利于提高行李传输速度。可选地，射线扫描设备的传送装置可以设置成与行李传输系统的传送带的速度相同。
此外，相对于各个扫描级中的射线源模块循环出束的情况，通过使各个扫描级的射线源模块同时出束除了提高扫描速度外还可以降低辐射剂量(例如，在电压不变的情况下电流可以为循环出束的三分之一大小)，从而可以降低射线扫描设备对屏蔽辐射的要求，有利于降低设备成本。
根据一些实施例，各个扫描级的射线源模块的射线束具有不同的能量。 射线源模块可选地设置成针对被检测物体的各个方向的不同尺寸而发射具有不同能量的射线束。例如，在被检测物体为机场行李的情况下，通常在厚度方向上(即，射线扫描设备的上下方向，图1A中的Y方向)尺寸较小，在宽度方向上(即，在射线扫描设备的左右方向，图1A中的X方向上)尺寸较大，因此，为了在宽度方向上获取较高的穿透率，布置在扫描区域左方或右方的射线源模块(例如，第一扫描级A的射线源模块和第三扫描级C的射线源模块)可发射具有较高能量的射线束，以保证在宽度方向上的射线穿透率，增加探测器检测到的有效数据，从而有利于提高图像质量；相应地，布置在扫描区域下方的射线源模块(例如，第二扫描级B的射线源模块)可发射与扫描区域的左侧或右侧的射线源模块相比具有较低能量的射线束，从而可以在确保射线穿透率的同时降低辐射剂量。
以上描述了根据本申请的射线扫描设备的各个具体实施例。
本申请的实施例还提供了一种用于行李检查的射线扫描系统，其包括以上任意实施例所述的射线扫描设备以及行李输送系统。该行李输送系统用于在机场等场所对多个行李进行输送，并且包括用于承载行李运动的传送带。该射线扫描设备用于对行李输送系统中的多个行李进行扫描，以检查行李中的违禁物品等。射线扫描设备可布置在行李输送系统的开端处、中间部分或末端处，并且射线扫描设备的传送装置与行李输送系统的传送相邻布置，以使得行李能够在两者之间移动。射线扫描设备具有布置在传送装置下方的射线源模块，使得传送装置具有距离地面等较高的高度，从而与行李输送速度的传送带的高度相匹配，可选地，与行李输送系统的传送带的高度相同。此外，射线扫描设备包括控制装置，所述控制装置配置成使得各个扫描级的射线源模块分别有一个靶点同时出束以对行李进行扫描，使得射线扫描设备能够以与行李输送系统的输送速度相匹配的检测速度对行李等被检测物体进行检测，并且可选地，射线扫描设备的传送装置的速度与行李输送速度的传送带的速度相同。由此，根据本申请的射线扫描系统可以方便地在行李输送系统与射线扫描设备之间传输行李，并且能够以较快地速度对行李进行安全检查。
本申请的实施例还提供了如以下各项所限定的用于射线源的安装定位 结构及射线扫描设备。
1.一种用于射线扫描设备的射线源的安装定位结构，所述射线扫描设备包括射线源以及固定设置的支撑框架，所述安装定位结构包括主体，所述主体能够固定连接到所述射线源和所述支撑框架，使得所述射线源能够通过所述主体固定安装到所述支撑框架上，
所述安装定位结构还包括：
移动装置，所述射线源能够通过所述移动装置在第一平面上被移动到预定安装位置；
第一定位装置，其用于在所述第一平面上对所述射线源进行定位；
升降装置，其用于沿第一方向调节所述射线源的位置，其中所述第一方向垂直于所述第一平面；以及
第二定位装置，其用于在所述第一方向上固定所述射线源的位置。
2.根据项目1所述的安装定位结构，其中，
所述移动装置包括设置在所述射线源的沿长度方向的两端的滚轮。
3.根据项目1所述的安装定位结构，其中，
所述第一定位装置包括第一定位销以及设置在所述主体和所述支撑框架上的对应于所述第一定位销的第一销孔。
4.根据项目1所述的安装定位结构，其中，
所述升降装置设置在所述射线源的沿长度方向的两端，其中一端的升降装置形成为可升降滚轮，另一端的升降装置形成为起升顶丝。
5.根据项目4所述的安装定位结构，其中，
所述第二定位装置形成为定位垫块，所述定位垫块在所述射线源通过所述升降装置被调节到沿所述第一方向的预定位置之后放置在所述主体的下方。
6.根据项目1-5中任一项所述的安装定位结构，还包括：
调节装置，其用于沿预定轴线旋转所述射线源以调节所述射线源的出束角度。
7.根据项目6所述的安装定位结构，其中，
所述射线源上设置有安装轴，所述主体上设置有对应的轴孔，所述主体通过轴孔安装在所述射线源的安装轴上；
所述定位安装结构还包括定位件和紧固件，所述主体通过所述定位件以及所述轴孔与所述安装轴的配合相对于所述射线源定位，并且通过所述紧固件固定连接到所述射线源；
所述调节装置包括转动驱动装置，所述转动驱动装置能够在所述定位件和所述紧固件松开的情况下驱动所述射线源绕所述安装轴转动。
8.根据项目7所述的安装定位结构，其中，
所述转动驱动装置包括固定在所述射线源上的调节块以及设置在所述主体上的与所述调节块相抵靠的顶丝，所述顶丝能够被旋转以推动所述调节块移动从而使所述射线源转动。
9.根据项目7所述的安装定位结构，其中，
所述定位件包括第二定位销以及形成在所述主体和所述射线源上的对应的第二销孔，并且所述紧固件包括固定螺栓以及形成在所述主体和所述射线源上的对应的螺纹孔。
10.一种射线扫描设备，其包括射线源以及固定设置的支撑框架，所述射线源经由如项目1-9中任一项所述的安装定位结构固定安装到所述支撑框架上。
11.如项目10所述的射线扫描设备，其中，所述射线扫描设备通过所述安装定位结构使所述射线源转动以调节所述射线源的出束角度。
本申请的实施例还提供了如以下各项所限定的探测器的安装固定结构以及射线扫描设备。
1.一种用于射线扫描设备的探测器的安装固定结构，所述射线扫描设备包括所述探测器和固定设置的支撑框架，所述探测器包括至少两个所述探测器组，所述探测器组经由所述安装固定结构固定安装到所述支撑框架上或从所述支撑框架上拆卸，所述安装固定结构包括：
第一安装部，其固定设置在所述探测器组上；
第二安装部，其固定设置在所述支撑框架上并且能够与所述第一安装部直线移动配合，所述探测器组在所述第一安装部与所述第二安装部相互 配合的状态下能够沿所述第二安装部移动到预定安装位置；以及
固定装置，其设置在所述探测器组的沿宽度方向的一侧，用于相对于所述支撑框架上的安装基准面固定所述探测器组。
2.根据项目1所述的安装固定结构，其中，
所述第二安装部还配置成在与所述第一安装部相配合的状态下将所述探测器组支撑在所述预定安装位置处。
3.根据项目1或2所述的安装固定结构，其中，
所述第一安装部包括滑块，所述滑块沿所述探测器组的长度方向延伸，并且所述第二安装部包括与所述滑块相配合的固定导轨。
4.根据项目3所述的安装固定结构，其中，
所述固定装置包括紧固件以及设置在所述支撑框架上的定位件，所述定位件的远离所述支撑框架的端面形成为所述安装基准面，用于抵靠所述探测器组的沿宽度方向的所述一侧的表面，所述紧固件穿过所述定位件并且相对于所述定位件的所述端面紧固所述探测器组。
5.根据项目3所述的安装固定结构，其中，
所述滑块设置在所述探测器组的沿宽度方向相对的两侧，并且具有从所述探测器组的沿宽度方向相对的两侧的边缘向内延伸的内延部；
所述固定导轨包括在沿宽度方向相对的两侧上向外延伸的外延部；
在所述第一安装部与所述第二安装部配合的状态下，所述滑块的内延部位于所述固定导轨的外延部的上方并且两者接触且重叠布置，以将所述探测器组悬挂在所述固定导轨上。
6.根据项目1或2所述的安装固定结构，其中，
所述第一安装部形成为沿所述探测器组的宽度方向延伸的滑槽，并且所述第二安装部形成为与所述滑槽相配合的滑杆。
7.根据项目6所述的安装固定结构，其中，
所述滑杆的靠近所述支撑框架的一端形成有凸部，所述凸部的朝向所述探测器组的表面形成为所述安装基准面，用于抵靠所述探测器组的沿宽度方向的另一侧的表面。
8.根据项目7所述的安装固定结构，其中，
所述固定装置设置在所述滑杆的与所述凸部相对的另一端，并且布置成与所述凸部分别抵靠所述探测器组的宽度方向的两侧。
9.根据项目8所述的安装固定结构，其中，
所述固定装置包括定位套和紧固件，所述定位套套设在所述滑杆的所述另一端上并且抵靠所述探测器的沿宽度方向的所述一侧，并且所述紧固件用于将所述定位套固定到所述滑杆的所述另一端上。
10.根据项目6所述的安装固定结构，其中，
所述第二安装部包括两个滑杆，所述第一安装部包括形成在所述探测器组的沿长度方向的两端处的两个滑槽，所述两个滑杆与两个滑槽分别相互配合以将所述探测器组在所述预定安装位置处。
11.根据项目1或2所述的安装固定结构，其中，
所述第一安装部形成为固定在所述探测器组的沿宽度方向的所述一侧上的固定块，所述固定块具有朝向所述探测器组的厚度方向的一侧的开口；
所述第二安装部形成为固定在所述支撑框架上的悬臂部，所述悬臂部的远离所述支撑框架的端部上设置有延伸部，所述延伸部能够与所述固定块的开口直线移动配合。
12.根据项目11所述的安装固定结构，其中，
所述固定装置包括设置在所述支撑框架上的固定件和紧固件，所述固定件的远离所述支撑框架的端面形成为所述安装基准面，用于抵靠所述探测器组的沿宽度方向的所述一侧的表面，并且所述紧固件用于相对于所述固定件的所述端面紧固所述探测器组。
13.根据项目11所述的安装固定结构，其中，
在所述第一安装部与所述第二安装部配合的状态下，所述悬臂部通过所述固定块将所述探测器组支撑在所述预定安装位置处。
14.一种射线扫描设备，其包括探测器以及固定设置的支撑框架，所述探测器包括至少两个所述探测器组，所述探测器组通过如项目1-13中任一项所述的安装固定结构安装固定到所述支撑框架上或者从所述支撑框架上拆除。
15.根据项目14所述的射线扫描设备，其中，
所述探测器组的宽度方向平行于被检测物体的输送方向，所述探测器组的长度方向和厚度方向垂直于被检测物体的输送方向，所述被检测物体的输送方向是所述被检测物体被输送通过所述射线扫描设备的扫描区域的方向。
16.根据项目15所述的射线扫描设备，其中，
用于各个探测器组的安装基准面位于垂直于所述被检测物体的输送方向的平面内。
17.根据项目14或15所述的射线扫描设备，其中，
所述第一安装部相对于所述第二安装部直线移动的方向平行或垂直于所述被检测物体的输送方向。
以上本申请的说明均是为了阐释和描述的目的，而非为了穷尽本申请或将本申请限制为所描述的确切形式。在不脱离本申请的发明原理的范围内，可能有许多修改或变化。所描述的实施例是为了最能解释本申请的原理及其实际应用。以上描述使其他本领域技术人员能够更好地利用和实践本申请的各种实施例和各种修改。本申请的范围由所附权利要求限定。

Claims (15)

  1. 一种用于行李输送系统的射线扫描设备，其包括：
    传送装置，其运送被检测物体通过所述射线扫描设备的扫描区域；和
    多个扫描级，其分别布置在所述被检测物体的输送方向的多个扫描平面上，每个扫描级包括相对布置的射线源模块和探测器组，并且所述射线源模块包括发射射线束的多个源点，
    其中，多个扫描级的射线源模块分别布置在所述扫描区域的下方、左方和右方。
  2. 根据权利要求1所述的射线扫描设备，其中，
    沿所述被检测物体的输送方向观察，所述多个扫描级的射线源模块布置成围绕所述扫描区域的上方开口的半封闭结构。
  3. 根据权利要求2所述的射线扫描设备，其中，
    所述射线源模块为分布式射线源并且所述射线源形成为直线形、折线形或弧形。
  4. 根据权利要求1-3中任一项所述的射线扫描设备，其中，
    在每个扫描级中，所述探测器布置成至少在两个方向上围绕所述扫描区域。
  5. 根据权利要求4所述的射线扫描设备，其中，
    在所述射线源模块布置在所述扫描区域下方的扫描级中，所述探测器呈围绕所述扫描区域的下方开口的U型结构。
  6. 根据权利要求4所述的射线扫描设备，其中，
    在所述射线源模块布置在所述扫描区域左方或右方的扫描级中，所述探测器呈围绕所述扫描区域的L型结构或U型结构。
  7. 根据权利要求1-3中任一项所述的射线扫描设备，其中，
    所述行李输送系统包括传送带，所述传送装置的速度和高度设置成与所述行李输送系统的传送带的速度和高度相匹配。
  8. 根据权利要求7所述的射线扫描设备，其中，
    所述传送装置的速度和高度设置成与所述行李输送系统的传送带的速度和高度相同。
  9. 根据权利要求1-3中任一项所述的射线扫描设备，还包括控制装置，所述控制装置被配置成控制各个扫描级中的射线源模块的出束顺序，使得各个扫描级中的射线源模块分别有一个源点同时出束。
  10. 根据权利要求9所述的射线扫描设备，其中，
    各个扫描级的各个射线源模块的射线束能量相同。
  11. 根据权利要求9所述的射线扫描设备，其中，
    布置在所述扫描区域左方或右方的所述射线源模块的射线束的能量高于布置在所述扫描区域下方的所述射线源模块的射线束的能量。
  12. 一种用于行李检查的射线扫描系统，其包括权利要求1-11中任一项所述的射线扫描设备以及行李输送系统，所述行李输送系统包括用于输送行李的传送带，其中所述射线扫描设备的传送装置与所述传送带的高度和速度相匹配。
  13. 根据权利要求12所述的射线扫描系统，其中，所述射线扫描设备的传送装置与所述行李输送系统的所述传送带的高度和速度相同。
  14. 一种用于权利要求1-11中任一所述的射线扫描设备的射线源的安装定位结构，所述射线扫描设备包括射线源以及固定设置的支撑框架，所述安装定位结构包括主体，所述主体能够固定连接到所述射线源和所述支撑框架，使得所述射线源能够通过所述主体固定安装到所述支撑框架上，
    所述安装定位结构还包括：
    移动装置，所述射线源能够通过所述移动装置在第一平面上被移动到预定安装位置；
    第一定位装置，其用于在所述第一平面上对所述射线源进行定位；
    升降装置，其用于沿第一方向调节所述射线源的位置，其中所述第一方向垂直于所述第一平面；以及
    第二定位装置，其用于在所述第一方向上固定所述射线源的位置。
  15. 一种用于权利要求1-11中任一所述的射线扫描设备的探测器的安装固定结构，所述射线扫描设备包括所述探测器和固定设置的支撑框架，所述探测器包括至少两个所述探测器组，所述探测器组经由所述安装固定结构固定安装到所述支撑框架上或从所述支撑框架上拆卸，所述安装固定 结构包括：
    第一安装部，其固定设置在所述探测器组上；
    第二安装部，其固定设置在所述支撑框架上并且能够与所述第一安装部直线移动配合，所述探测器组在所述第一安装部与所述第二安装部相互配合的状态下能够沿所述第二安装部移动到预定安装位置；以及
    固定装置，其设置在所述探测器组的沿宽度方向的一侧，用于相对于所述支撑框架上的安装基准面固定所述探测器组。
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