Radiation injection equipment and radiation injection system

Abstract

The present application relates to radiation injection equipment and a radiation injection system. The radiation injection equipment for a baggage transport system of the present application comprises: a transport device for transporting an object to be inspected to pass through a scanning area of ​​the radiation injection equipment; and a plurality of scanning stages each disposed in a plurality of scanning planes in the transport direction of the object to be inspected, wherein each scanning stage comprises a radiation source module and a detector set disposed opposite each other, and the radiation source module comprises a plurality of source points for emitting a radiation beam, and the radiation source modules of the plurality of scanning stages are each disposed below, to the left, and to the right of the scanning area.

Description

Technology Field

[0001] This application claims priority to Chinese patent application 202110769688.X dated July 7, 2021, titled "Radiation Injection Equipment and Radiation Injection System," the entire contents of said application are incorporated into this application by reference.

[0002] This application relates to the field of radiation imaging, and in particular to radiation injection equipment for baggage transport systems and radiation injection systems for baggage inspection. Background Technology

[0003] Radiation scanning technology can play a crucial role in safety inspections because it can eliminate the superposition effects of objects. Conventional radiation scanning equipment utilizes a sliding loop device to rotate the X-ray machine and detector, thereby acquiring projection data from various angles. It then obtains tomographic images through reconstruction methods to obtain internal information about the inspected object. When combined with dual-energy or multi-energy imaging techniques, current baggage inspection equipment can reconstruct the atomic number and electron density of the inspected material to identify the type of material, playing a significant role in the inspection of explosives, hazardous materials, and the like.

[0004] Existing safety inspection radiation scanning equipment still faces several limitations. For example, current airport baggage handling systems generally operate at relatively high speeds to meet timeliness requirements, which necessitates higher detection rates from the inspection equipment; however, increasing detection speeds can lead to issues such as increased radiation exposure and higher costs.

[0005] The present application provides, with respect to the above-mentioned problem, a radiation scanning device for a baggage transport system, wherein the device comprises: a transport device for transporting an object to be inspected to pass through a scanning area of ​​the radiation scanning device; and a plurality of scanning stages each disposed in a plurality of scanning planes in the transport direction of the object to be inspected, wherein each scanning stage comprises a radiation source module and a detector set disposed opposite each other, and the radiation source module comprises a plurality of source points for emitting a radiation beam, and the radiation source modules of the plurality of scanning stages are each disposed below, to the left, and to the right of the scanning area.

[0006] An embodiment of the present application also provides a radiation scanning system for baggage inspection, wherein the system comprises a radiation scanning device and a baggage transport system of an embodiment of the present application, and the baggage transport system comprises a conveyor belt for transporting baggage, and the height and speed of the transmission device of the radiation scanning device and the conveyor belt are matched.

[0007] Embodiments of the present application also provide a mounting positioning structure for a radiation source of a radiation injection device, wherein the radiation injection device comprises a radiation source and a fixedly positioned support frame, and the mounting positioning structure comprises a main body, the main body being fixedly connected to the radiation source and the support frame so as to allow the radiation source to be fixedly mounted to the support frame through the main body, and the mounting positioning structure comprises: a moving device for moving the radiation source to a predetermined mounting position on a first plane; a first positioning device for positioning the radiation source on a first plane; a lifting device for adjusting the position of the radiation source along a first direction perpendicular to the first plane; and a second positioning device for fixing the position of the radiation source in a first direction.

[0008] By using the mounting position determination structure according to the above-described embodiment, each radiation source of the radiation injection equipment can be separately disassembled and mounted, and the beam emission angle of the radiation source can also be adjusted.

[0009] Embodiments of the present application also provide a mounting fixing structure for a detector of a radiation scanning device, wherein the radiation scanning device comprises a detector and a fixedly positioned support frame, the detector comprises one or more detector sets, the detector set is fixedly positioned on the support frame by a mounting fixing structure or is detached from the support frame, and the mounting fixing structure comprises: a first mounting part fixedly positioned on the detector set; a second mounting part fixedly positioned on the support frame and linearly movable and coupled with the first mounting part, wherein the detector set is movable along the second mounting part to a predetermined mounting position while the first mounting part and the second mounting part are coupled together; and a fixing device disposed on one side along the width direction of the detector set and for fixing the detector set with respect to a mounting reference plane of the support frame.

[0010] By using the mounting fixing structure according to the above-described embodiment, each detector set of the detector can be separately disassembled and mounted, and can be positioned to allow for detachment and maintenance in the direction of transport of the object to be inspected or in a direction perpendicular to the direction of transport as needed, thereby improving the convenience of detachment and maintenance of the detector set.

[0011] Other configurations and technical advantages of the present application will be described in more detail below with reference to the accompanying drawings and other embodiments. Brief explanation of the drawing

[0012] FIG. 1a shows a schematic diagram of the overall structure of a radiation injection device according to an embodiment of the present application. FIGS. 1b and 1c show schematic diagrams of the structure of the radiation source module and detector of the second and third scanning stages of the radiation scanning equipment according to an 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. FIGS. 3a and 3b show a schematic diagram of the target distribution of a radiation source module observed in the transport direction of an object to be inspected according to an embodiment of the present application. FIG. 4 shows a schematic diagram of the structure of a detector set according to an embodiment of the present application. FIG. 5 shows a schematic diagram of the structure of a detector unit according to an embodiment of the present application. FIGS. 6a-6c shows a schematic diagram of a mounting position determination structure of a radiation source module according to an embodiment of the present application. FIGS. 7a-7d shows a schematic diagram of a mounting fixing structure of a detector set according to some embodiments of the present application. FIGS. 8a-8d shows schematic diagrams of mounting fixing structures of a detector set according to other embodiments of the present application. FIGS. 9a-9b shows a schematic diagram of a mounting fixing structure of a detector set according to another embodiment of the present application. Specific details for implementing the invention

[0013] To clearly explain the technical problem to be solved by this application, the technical solution, and the beneficial effects, this application is described in more detail below together with the attached drawings and examples. It should be understood that the specific examples described herein are used only to explain this application and are not intended to limit the scope of this application.

[0014] Regarding the technical problems of the prior art, embodiments of the present application provide a radiation scanning device used in a baggage transport system. The radiation scanning device comprises a transport device that transports an object to be inspected and passes through a scanning area of ​​the radiation scanning device, and a plurality of scanning stages arranged on a plurality of scanning planes along the transport direction of the object to be inspected, wherein each scanning stage includes a corresponding radiation source module and a detector. While the object to be inspected is transported by the transport device and passes through the scanning area, the plurality of scanning stages scan the object to be inspected and generate a corresponding digital signal. The radiation scanning device may further include a control device capable of obtaining internal information of the object to be inspected by reconstructing an image based on the digital signal generated at each scanning stage. In this specification, the object to be inspected is an item requiring safety inspection, such as baggage or a package, and the scanning area is limited by the radiation source module and the detector of each scanning stage.

[0015] Specifically, each scanning stage includes a radiation source module and a detector positioned oppositely, wherein each radiation source module of each scanning stage includes a plurality of source points that emit a radiation beam, and among them, the plurality of radiation source modules of the plurality of scanning stages are positioned below, to the left, and to the right of the scanning area, respectively, and optionally, when observed along the transport direction of the object to be inspected, the plurality of radiation source modules of the plurality of scanning stages form a semi-closed structure having an opening above that surrounds the scanning area. Since there is at least one scanning stage and the radiation source module is positioned below the scanning area, the transmission device of the radiation scanning equipment of the present application can be positioned to have a relatively high height from the surface on which the radiation scanning equipment is placed (e.g., the ground, etc.), and thus can match the height of a conveyor line of a relatively high object to be inspected (e.g., a baggage conveyor system, etc.) located upstream or downstream of the radiation scanning equipment (e.g., the same as the height of the conveyor belt of the baggage conveyor system). Additionally, in this specification, 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 observed along the transport direction of the object to be inspected.

[0016] In addition, the detector of each scanning stage is positioned opposite the radiation source module to receive almost all radiation passing through the object to be inspected. Therefore, the radiation scanning equipment according to the present application can obtain very comprehensive scanning data, thereby ensuring image quality. As such, although the present application places radiation sources only on three sides of the scanning area, it can still ensure image quality and reduce the cost of radiation sources compared to the case where radiation sources are placed on four sides of the scanning area. Furthermore, since the radiation source module is not placed above the scanning area, maintenance of the radiation source module can be facilitated.

[0017] In addition, the control device is connected to each scanning stage to control the beam emission sequence of the source points of the radiation source modules of each scanning stage, specifically ensuring that each radiation source module of each scanning stage emits a beam from a single source point simultaneously. Through this, the scanning speed of the radiation scanning equipment can be improved, and consequently, the detection speed can be increased. Furthermore, the radiation scanning equipment can be aligned with a conveyor line of an object to be inspected (e.g., a baggage conveyor system, etc.) having a relatively high transport speed located upstream or downstream of the radiation scanning equipment (e.g., the speed of the transmission device is the same as the speed of the conveyor belt of the baggage conveyor system).

[0018] In addition, the radiation source module of each scanning stage can be configured to emit radiation beams of different energies, and optionally, a radiation source module located to the left or right of the scanning area can emit a radiation beam of higher energy than a radiation source module located below the scanning area. In this way, when inspecting luggage that is thin and wide, the radiation transmittance in the width direction of the luggage is ensured, thereby increasing the number of radiations that the detector can detect and improving image quality.

[0019] The embodiments of the present application will be described in detail with reference to the attached drawings below.

[0020] FIGS. 1a-1c schematically illustrate structural schematic diagrams of a radiation injection device according to some embodiments of the present application. FIG. 1a illustrates a schematic diagram of the overall structure of the radiation injection device, and FIGS. 1b and FIGS. 1c illustrate structural schematic diagrams of the second injection stage and the third injection stage of the radiation injection device of FIG. 1a, respectively. As illustrated in the drawings, the radiation injection device comprises a plurality of injection stages (e.g., a first injection stage (A), a second injection stage (B), and a third injection stage (C)), a channel (110), and a transmission device. Although the first injection stage (A) is not separately illustrated, the first injection stage (A) is symmetrically positioned with respect to the third injection stage (C), and although the transmission device is not illustrated, the transmission device is positioned near the lower surface of the channel (110) in the channel (110) and extends across the channel (110). Each injection stage includes a radiation source module and a detector. The transmission device transports an object to be inspected through the injection area of ​​each injection stage so that the object to be inspected is injected. FIG. 1a illustrates the direction of travel (Z) of an object to be inspected, and the direction of transport of the object to be inspected (hereinafter also abbreviated as transport direction or Z direction) is defined as a direction parallel to the direction of travel of the object to be inspected, and includes the direction of travel and the reverse direction. FIG. 1a also illustrates an XYZ coordinate system, which can be used as a reference coordinate system to describe the positions of components of a radiation scanning device; such position description is intended to clearly explain the principles of the present application and has no limiting effect. The direction of travel (Z) of the object to be inspected is identical to the Z direction of the corresponding XYZ coordinate system.

[0021] The radiation scanning equipment illustrated in FIG. 1a may further include a control device (not shown in the drawing) capable of controlling the operation of each component of the radiation scanning equipment, such as radiation emission from each scanning stage and data output from a detector. The control device may further include an image processing module capable of reconstructing an image based on the output information of the detector of each scanning stage to acquire a scanned image of an object to be inspected and to determine internal information of the object to be inspected.

[0022] According to a specific embodiment, each scanning stage of the radiation scanning equipment is arranged on a plurality of scanning planes along the transport direction of the object to be inspected. Each scanning plane is arranged at predetermined distance intervals along the transport direction of the object to be inspected. Here, if the optical paths and / or components of each scanning stage do not interfere with each other, the optical path distribution length of the radiation scanning equipment can be reduced by setting this distance to be smaller.

[0023] Each scanning stage includes a set of radiation source modules and detectors positioned opposite each other. In each scanning stage, the radiation source module and the detector can be positioned in the same plane perpendicular to the Z direction, so that the radiation exit of the radiation source module is directed directly toward the crystal of the detector, thereby avoiding the effect on the reconstructed image caused by radiation being incident obliquely on the crystal surface of the detector. Of course, according to other embodiments, the radiation source module and the detector can be positioned in different planes perpendicular to the Z direction, that is, the radiation source module and the detector can be offset from each other by a certain distance along the Z direction.

[0024] A radiation source module includes a plurality of source points that emit a radiation beam. Specifically, the radiation source module may be a distributed radiation source, and each radiation source module may have a plurality of targets, each target may individually generate a radiation beam, and the plurality of targets may generate a radiation beam at a predetermined timing under the control of a control device. The radiation beam may be a fan-shaped beam having an aperture angle (A) as shown in FIG. 2. Of course, the shape of the radiation beam is not limited to a fan-shaped beam; it may be a radiation beam of other shapes, such as a tapered beam or a parallel beam, and can be specifically set according to demand. Optionally, the radiation source module is a linear distributed radiation source, that is, multiple targets are arranged in a straight line. According to another embodiment, the radiation source module may be a broken linear or arc-shaped distributed radiation source. Alternatively, each radiation source module may be a radiation source group comprising multiple single-point sources.

[0025] Additionally, at each scanning stage, the radiation source modules are uniformly arranged in one direction of the scanning area, and the radiation source modules at each scanning stage are arranged in different directions of the scanning area, for example, to the left (first scanning stage (A)), downward (second scanning stage (B)), and right (third scanning stage (C)) of the scanning area, respectively. Optionally, when observed along the transport direction of the object to be inspected, the radiation source modules of these scanning stages are arranged in a semi-closed structure having an opening on the upper side surrounding the scanning area. Depending on the shape of the radiation source module (straight, broken linear, or arc shape, etc.), the semi-closed structure may be a U-shaped structure, a semi-circular structure, a semi-elliptical structure, etc. For example, as shown in FIGS. 3a and 3b, when the radiation source module is straight or broken linear, the radiation source modules of the plurality of scanning stages may be arranged in a U-shaped structure when observed along the transport direction of the object to be inspected. Additionally, optionally, when observed along the transport direction of the object to be inspected, the multiple radiation source modules of the multiple scanning stages partially overlap targets at adjacent ends. Specifically, taking the arrangement of radiation source modules shown in FIG. 3a as an example, when observed along the transport direction of the object to be inspected, the radiation source module on the left side of the scanning area and the radiation source module below the scanning area may partially overlap targets at adjacent ends (i.e., the lower left corner of the U-shaped structure in the drawing), and the radiation source module on the right side of the scanning area and the radiation source module below the scanning area may partially overlap targets at adjacent ends (i.e., the lower right corner of the U-shaped structure in the drawing). In this way, it is possible to ensure that the entire object to be inspected is covered by radiation, thereby avoiding the loss of projection data at positions corresponding to the ends of the radiation sources, which helps to improve image quality.

[0026] In addition, at each scanning stage, detectors are uniformly arranged to surround the scanning area from at least two directions. For example, in the first scanning stage (A), the detectors have an L-shaped structure that surrounds the upper and right sides of the scanning area. In the second scanning stage (B), the detectors have a U-shaped structure that is open downwards and surrounds the upper, left, and right sides of the scanning area, and in the third scanning stage (C), the detectors have an L-shaped structure that surrounds the upper and left sides of the scanning area. By arranging the detectors to surround the scanning area from at least two directions, the detectors can detect almost all radiation passing through the object to be inspected, thereby obtaining very comprehensive scanning data and ensuring image quality. Additionally, although the detectors in the first scanning stage (A) and the third scanning stage (C) in FIG. 1a are arranged in an L-shaped structure, they may also be U-shaped structures that are open toward the radiation source module; in this case, the comprehensiveness of the scanning data can be further ensured, which further contributes to improving image quality.

[0027] The detector may include a plurality of detector sets, each detector set being a detector array comprising a plurality of detector units. The detector array may be a straight, arc-shaped, or angled linear detector array. In the embodiment illustrated in FIGS. 1a-1c, the detector of each scanning stage is composed of a plurality of linear detector arrays. For example, in the first scanning stage (A) and the third scanning stage (C), the detector includes two detector sets, and each detector set is a linear detector array. In the second scanning stage (B), the detector includes three detector sets, and each detector set is a linear detector array. Here, any suitable structure may be used for the detector sets in the shape of a linear detector array, and according to some embodiments, the specific structure is as illustrated in FIG. 4. As illustrated in FIG. 4, the detector set (30) includes a plurality of detector units (31) and a detector arm (32), and the plurality of detector units (31) are arranged in a straight line on the detector arm (32). The specific structure of the detector unit (31) may be as shown in FIG. 5, and of course, other suitable structures may be used. As shown in FIG. 5, the detector unit (31) includes a detector crystal (311) that receives radiation. A plurality of detector units (31) are arranged side by side on a detector arm (32) such that the detector crystals (311) face the same direction. The structure of the detector arm (32) is not limited to the embodiment shown in FIG. 5, and other suitable structures (detector arm structures shown in FIG. 7a-9b) may also be used. The detector set of the radiation scanning equipment of the present application is not limited to the form of a linear detector array and may be in the form of an arc detector array. An arc detector array may include a plurality of arc detector units and an arc detector arm, and the plurality of arc detector units are arranged side by side on an arc detector arm, wherein the detector crystals of the detector units face the same direction.

[0028] In the radiation injection equipment of the above embodiment, since the radiation source module of the second injection stage (B) is positioned below the injection area, the height of the transmission device can be increased compared to a device in which the radiation source is not positioned below the injection area, thereby facilitating the movement of luggage between the transmission system and the radiation injection equipment when the radiation injection equipment is applied to a luggage transport system with a high conveyor belt height. Here, optionally, the transmission device may be configured to have the same height as the conveyor belt of the luggage transport system to further facilitate the movement of luggage.

[0029] In the above embodiment, the radiation source modules of each scanning stage are disassembled and mounted independently of each other; that is, each radiation source module has a separate chamber to accommodate its own radiation generating device. Having a separate chamber for each radiation source module means that multiple targets of each radiation source module share a single separate vacuum chamber. This reduces the case size and internal vacuum chamber volume of a single radiation source module compared to a radiation source with an integrated annular chamber (i.e., all targets of the radiation source are located within the same annular vacuum chamber), thereby reducing the volume and weight of the single radiation source module, making disassembly and mounting of the radiation source easier. Additionally, since each radiation source module uses a separate vacuum chamber, there is an advantage of reducing the risk of ignition within the chamber during maintenance of the radiation source module.

[0030] According to some embodiments, the radiation source module of each scanning stage is provided with a mounting position determining structure to facilitate mounting and adjustment of the radiation source module. By using the mounting position determining structure, each radiation source module can be mounted and fixed at a predetermined position of the radiation scanning equipment (e.g., a specific position according to the XYZ reference coordinate system in the radiation scanning equipment), thereby ensuring the relative position of the radiation source module and the detector. Additionally, by using the mounting position determining structure, the radiation source module can rotate to adjust the beam emission angle of the radiation beam. Therefore, when the radiation source module and the detector are located within different planes perpendicular to the Z direction, the beam emission angle of the radiation beam can be adjusted using the mounting position determining structure, so that the center of the radiation beam can irradiate the determination plane of the detector set.

[0031] Since the radiation source modules of each scanning stage are located at different positions within the radiation scanning equipment, different mounting methods may be adopted, and they possess different mounting position determination structures. For example, radiation source modules located to the left and right of the scanning area can be mounted by suspending them using equipment such as a crane. However, radiation source modules located below the scanning area are not suitable for the suspending method and must be mounted by a different method. To facilitate the mounting of such radiation source modules, an embodiment of the present application provides a mounting position determination structure that allows radiation source modules unsuitable for suspending to be easily mounted and fixed at a predetermined position within the radiation scanning equipment, and also allows the beam emission angle of the radiation beam to be adjusted by rotating the radiation source module. According to some embodiments, the mounting position determining structure comprises a main body, and the main body is fixedly connected to a support frame of a radiation source module and a radiation injection device (a support frame is a fixedly positioned support device for mounting and fixing components such as a radiation source and a detector of the radiation injection device) so that the radiation source module can be fixedly mounted on the support frame. The mounting position determining structure comprises: a moving device that allows the radiation source module to move to a predetermined mounting position in a first plane (e.g., the XZ plane of FIG. 1a); a first position determining device that positions the radiation source module on the first plane; a lifting device that adjusts the position of the radiation source module along a first direction perpendicular to the first plane (e.g., the Y direction perpendicular to the XZ plane of FIG. 1a); and a second position determining device that fixes the position of the radiation source module in the first direction.

[0032] FIGS. 6a-6c illustrates a specific embodiment of a mounting position determination structure for a radiation source module (10). As shown in FIGS. 6a-6c, the mounting position determination structure includes a main body (11, 12), the main body (11, 12) is located at each end along the longitudinal direction of the radiation source module (10), is fixedly connected to the radiation source module (10), and the radiation source module (10) is fixedly mounted to a support frame of a radiation injection device through the main body (11, 12). The moving device of the mounting position determination structure is specifically composed of rollers (13, 14) which are respectively placed on the main body (11, 12), and the radiation source module (10) can be moved to a predetermined mounting position in the XZ plane by being pushed by the rollers (13, 14). Of course, the moving device of the mounting position determining structure is not limited to rollers, and according to other embodiments, the radiation source module (10) can be moved in a sliding manner, for example, by placing a straight slide coupling between the mounting position determining structure and the support frame to move the radiation source module (10) to a predetermined mounting position.

[0033] The first positioning device includes a first positioning pin (15, 16) and a corresponding first pinhole (not shown) respectively disposed in the main body (11, 12) and the support frame of the radiation injection equipment, and after the radiation source module (10) is moved to a predetermined mounting position by the roller (13, 14), the first positioning pin (15, 16) is inserted into the corresponding first pinhole, thereby positioning the radiation source module (10) in the XZ plane.

[0034] The lifting device includes a roller (13) disposed on the main body (11), the roller (13) specifically disposed as a roller capable of lifting and lowering, and further comprises a lifting jack screw (17) disposed on the main body (12), one end of the lifting jack screw (17) in contact with a support frame, and by twisting the lifting jack screw (17), the main body (12) and the radiation source module (10) can be raised or lowered relative to the support frame. By adjusting the lifting roller (13) and the lifting jack screw (17), the position of the radiation source module (10) relative to the support frame can be adjusted along the Y direction. The second positioning device is composed of positioning pad blocks (19, 20), and after adjusting the radiation source module (10) to a predetermined position along the Y direction by adjusting the lifting roller (13) and the lifting jack screw (17), the positioning pad blocks (19, 20) are each placed below the main body (11, 12) to fix the height of the radiation source module (10) relative to the support frame, thereby positioning the radiation source module (10) along the first direction (Y). Here, optionally, the positioning pad block (20) below the main body (12) may be arranged in a U-shape, and the lower part of the lifting jack screw (17) may be located in the opening of the U-shaped positioning pad block (20) to prevent mutual interference. Additionally, the mounting positioning structure includes a first fixing bolt (21, 22), a main body (11, 12), a positioning pad block (19, 20), and a first screw hole arranged to correspond to the support frame. When the first fixing bolt (21, 22) is inserted into the corresponding first screw hole and fastened, the positioning pad block (19, 20) can be fixed to the main body (11, 12) and the support frame, and the radiation source module (10) can be fixedly connected to the support frame.

[0035] Additionally, according to some embodiments, the mounting position determining structure further includes an adjustment device that rotates the radiation source module along a predetermined axis to adjust the radiation beam emission angle. According to specific embodiments of FIGS. 6a-6c, the radiation source module (10) is provided with a mounting shaft (27), and a shaft hole is installed in each of the main body (11, 12), and the main body (11, 12) is mounted on the mounting shaft (27) through the shaft hole. Additionally, the mounting position determining structure is provided with a second position determining pin (23, 24), and a second pin hole corresponding to the second position determining pin (23, 24) is disposed in each of the main body (11, 12) and the radiation source module (10), and the main body (11, 12) can be fixed to the radiation source module (10) by connecting the shaft hole of the main body (11, 12) to the mounting shaft (27) and inserting the second position determining pin (23, 24) into the second pin hole. Additionally, the mounting position determining structure includes a second fixing bolt (25, 26) for fixing the main body (11, 12) to the radiation source module (10) and a corresponding second screw hole disposed in the main body (11, 12) and the radiation source module (10), and by inserting the second fixing bolt (25, 26) into the corresponding second screw hole, the main body (11, 12) can be fixedly connected to the radiation source module (10). When the second position determining pin (23, 24) is removed and the second fixing bolt (25, 26) is loosened, the main body (11, 12) can be loosened to the radiation source module (10), and in this state, the adjusting device can drive the radiation source module (10) to cause the main body (11, 12) to rotate around the mounting axis (27).

[0036] In a specific embodiment, the adjustment device includes a rotary drive mechanism, and the rotary drive mechanism includes an adjustment block (28) fixed to the radiation source module (10) and a jack screw (29) disposed on the main body (11) and in contact with the adjustment block (28), wherein the jack screw (29) can be twisted to move the adjustment block (28) and rotate the radiation source module (10). Here, the rotary drive mechanism is disposed only on one main body of the mounting position determination structure, that is, disposed only on one end along the longitudinal direction of the radiation source module (10). Since both ends of the radiation source module (10) are supported by the mounting shaft (27), if the radiation source module (10) is pushed to rotate at one end of the radiation source module (10), the entire radiation source module (10) can rotate accordingly. After rotating the radiation source module (10) to a predetermined angle, insert the second positioning pin (23, 24) back into the corresponding second pin hole, and then insert the second fixing bolt (25, 26) back into the corresponding second screw hole, the main body (11, 12) can be fixedly connected to the radiation source module (10).

[0037] In the above embodiment, since the mounting axis (27) of the radiation source module (10) can overlap with the virtual connection line of a plurality of targets in the radiation source module (10), when the radiation source module (10) is rotated around the mounting axis (27), the radiation source module (10) can rotate around the target axis.

[0038] Additionally, although the mounting position determination structure according to the above embodiment has been described using a radiation source module (10) as an example, the mounting position determination structure can be applied to the mounting, positioning, and adjustment of a radiation source of any suitable radiation injection equipment. Of course, the mounting, positioning, and adjustment of the radiation source module (10) are not limited to the mounting position determination structure of the embodiment described above, and other suitable structures may also be used. For example, in the embodiment illustrated in FIGS. 6a-6c, the lifting device is implemented by a lifting roller (13) and a lifting jack screw (17), but the lifting device is not limited to the specific structure of this embodiment and may be implemented with other suitable structures, for example, the lifting device may be lifted using a lifting jack screw on both bodies. Likewise, the specific implementation of the moving device, the first positioning device, the second positioning device, and the adjustment device is not limited to the specific structure of the embodiment described above, and other suitable structures may be adopted as long as they can implement the function.

[0039] According to some embodiments, each detector set of each scanning stage can be independently disassembled and mounted, thereby improving the maintainability of the detectors. Additionally, the radiation scanning equipment of the present application includes a mounting fixing structure used for a single detector set, wherein the detector set can be moved relative to a mounting position in the radiation scanning equipment (e.g., a support frame of the radiation scanning equipment) by means of said mounting fixing structure, so that it can be disassembled from said mounting position or mounted at said mounting position.

[0040] Hereinafter, a mounting fixing structure for a detector set according to some embodiments of the present application will be described in detail. Specifically, the mounting fixing structure for a detector set according to some embodiments of the present application includes: a first mounting part fixedly disposed on the detector set; a second mounting part fixedly disposed on the support frame of a radiation scanning equipment and linearly coupled to the first mounting part, such that the detector set can move along the second mounting part to a predetermined mounting position while the first mounting part and the second mounting part are mutually coupled; and a fixing device disposed on one side in the width direction of the detector set and used to fix the detector set with respect to a mounting reference plane on the support frame. In some specific embodiments, the detector set is mounted and fixed to the support frame of the radiation scanning equipment via a detector arm, wherein the first mounting part is fixedly disposed on the detector arm of the detector set, the fixing device is disposed on one side along the width direction of the detector arm, and the detector arm is fixed to the support frame to fix the detector set.

[0041] FIGS. 7a-7d illustrate a mounting fixing structure for a detector set (40) according to some specific embodiments, wherein FIG. 7a is a perspective view of the detector set in a mounted state, FIG. 7b is a side view of the detector set in a mounted state, FIG. 7c is a perspective view of the detector set in a disassembled state, and FIG. 7d is a cross-sectional view of the detector set in a mounted state with a fixing device. The mounting fixing structure illustrated in FIGS. 7a-7d is applied, for example, to a detector set located above the scanning area in a scanning stage (A, B, C). By the mounting fixing structure of the present embodiment, the detector set located above the scanning area can be disassembled or mounted by moving perpendicularly to the transport direction of the object to be inspected, and can be fixed or adjusted from the side along the transport direction of the object to be inspected.

[0042] As illustrated in FIG. 7a, the first mounting portion of the mounting fixing structure of the detector set (40) includes a slider (42) disposed on the detector arm (41), and the slider (42) extends in the longitudinal direction of the detector arm (41), wherein, when the detector set (40) is mounted on the radiation scanning equipment, the longitudinal direction of the detector arm (41) is perpendicular to the transport direction of the object to be inspected, and the width direction coincides with the transport direction of the object to be inspected. In FIG. 7a, the slider (42) extends over a portion of the length of the detector arm (41), and in other embodiments, the slider (42) may be disposed to extend over the entire length or another length of the detector arm (41). Additionally, the slider (42) may be fixed to the detector arm (41) through bolt fastening, etc. According to another embodiment, the slider (42) may be molded integrally with the detector arm (41).

[0043] The second mounting portion is formed by a fixed guide rail (43) that is coupled with a slider (42). The fixed guide rail (43) is fixed to a support frame (not shown in FIG. 7a) of the radiation scanning equipment and may be formed integrally with the support frame. The longitudinal direction of the fixed guide rail (43) is perpendicular to the transport direction of the object to be inspected of the radiation scanning equipment. A limiting portion (not shown in the drawing) is disposed at one end of the longitudinal direction of the fixed guide rail (43), and when mounting the detector set (40), the slider (42) is aligned with the fixed guide rail (43), and the detector set (40) is pushed along the fixed guide rail (43) until the detector arm (41) touches the limiting portion, thereby moving the detector set (40) to a predetermined mounting position.

[0044] The fixing device is positioned on one side in the width direction of the detector set (40) and comes into contact with the surface (44) on one side in the width direction of the detector arm (41). Specifically, the fixing device includes a positioning member (45) and a fastening member (46), wherein the positioning member (45) is fixedly connected to a support frame and forms a mounting reference surface (47) on which a cross section separated from the support frame comes into contact with the surface (44) on one side in the width direction of the detector arm (41). The surface (44) is the mounting surface of the detector arm (41), and is processed to have good flatness together with the mounting reference surface (47), so that when the mounting surface (44) of the detector arm (41) comes into contact with the mounting reference surface (47) and is fixed, the detector set (40) can be accurately positioned in the width direction, that is, in the direction of transport of the object to be inspected. The fastening member (46) can pass through the positioning member (45) and fasten the detector set (40) to the cross section of the positioning member (45) (i.e., the mounting reference surface (47)). Specifically, the fastening member (46) may be, for example, a fastening bolt, and a corresponding screw hole is provided on the side of the positioning member (45) and the detector arm (41) facing the positioning member (45), and the detector set (40) can be fastened to the cross section of the positioning member (45) (i.e., the mounting reference surface (47)) by passing the fastening bolt (46) through the corresponding screw hole and tightening it. A plurality of fixing devices may be arranged along the longitudinal direction of the detector set (40) to firmly fix the detector set (40) to the support frame, for example, at least two or more may be arranged.

[0045] When mounting the detector set (40) using the above-described mounting fixing structure, with the detector unit of the detector set (40) facing downward, first align the slider (42) on the detector set (40) with the fixed guide rail (43) so that the detector set (40) moves along the fixed guide rail (43) until it comes into contact with the limiting part of the fixed guide rail (43), and then the fastening bolt (46) is passed through the corresponding screw hole of the positioning member (45) and the detector arm (41) and tightened to position the detector set (40) relative to the cross-section of the positioning member (45), i.e., the mounting reference surface (47). When disassembling the detector set (40), the operation should be reversed.

[0046] The longitudinal direction of the fixed guide rail is perpendicular to the transport direction of the object to be inspected by the radiation scanning equipment, and since there is no obstruction of the radiation source on one side of the X direction of the detector set (40), the detector set (40) can be disassembled or mounted on the support frame in a direction perpendicular to the transport direction of the object to be inspected by the above-mentioned mounting fixing structure, and the fixing device is positioned on one side of the width direction of the detector set, that is, on one side of the Z direction of the detector, so that the fixing or adjustment of the detector set is easy, and thus, the detachment and maintenance of the detector set can be made easy by the mounting fixing structure according to the above-mentioned embodiment.

[0047] Additionally, optionally, in the above-described mounting fixing structure, the second mounting portion is configured to support the detector set (40) at a predetermined mounting position while coupled with the first mounting portion. Specifically, the slider (42) is positioned on opposite sides along the width direction of the detector arm (41) and has an inner edge (421, 422) (see FIG. 7(b)) extending inward from the opposite edges along the width direction of the detector arm (41), and the fixed guide rail (43) has an outer edge (431, 432) (see FIG. 7(b)) extending outward from opposite sides along the width direction. Additionally, while the slider (42) is coupled to the fixed guide rail (43), the inner edge (421, 422) of the slider (42) is positioned above the outer edge (431, 432) of the fixed guide rail (43), so that the two are in contact and overlapped. Accordingly, after the detector set (40) moves along the fixed guide rail (43) to a predetermined mounting position, the detector set (40) can be caught on the outer edge (431, 432) of the fixed guide rail (43) through the inner edge (421, 422) of the slider (42). In this way, the fixed guide rail (43) can support the detector set (40) to a predetermined mounting position without additional auxiliary structures or tools, and when attaching the detector set (40), the operator can operate it without supporting the detector set (40), thereby improving ease of operation.

[0048] In addition, in the above-described mounting fixed structure, the linear movement coupling between the first mounting part and the second mounting part is formed by the coupling of a slider and a guide rail, but according to another embodiment, the linear movement coupling may employ, for example, a linear slide or a linear rotation coupling, and may be formed by, for example, the coupling of a linear ball bearing and a cylindrical shaft.

[0049] The mounting fixing structure of the above embodiment is applied to a detector set located above the scanning area. FIGS. 8a-8d show a fixed mounting structure of a detector set according to some other embodiments, FIG. 8a is a perspective view of the detector set in a mounted state, FIG. 8b is a schematic view of the first mounting part and the second mounting part of the mounting fixing structure in a separated state, and FIGS. 8c and FIGS. 8d are perspective views at different views of the first mounting part and the second mounting part of the mounting fixing structure in a combined state.

[0050] The mounting fixing structure illustrated in FIGS. 8a-8d is applied to a detector set located on the left or right side of the scanning area, for example, in a scanning stage (A, B, C). By the mounting fixing structure of the present embodiment, the detector set located on the left or right side of the scanning area can be moved in a direction perpendicular to the transport direction of the object to be inspected and disassembled or mounted, and can be fixed or adjusted from the side along the Z direction of the detector.

[0051] The first mounting portion of the mounting fixing structure of the detector set (50) is specifically formed by a fixing block (52) positioned on one side in the width direction of the detector arm (51), and the fixing block (52) has an opening (53) facing one side in the thickness direction of the detector arm (51). In the mounted state of the detector set (50), the width direction of the detector arm (51) coincides with the transport direction of the object to be inspected by the radiation scanning equipment, and the length direction and thickness direction are perpendicular to the transport direction of the object to be inspected. The opening (53) of the fixing block (52) may be U-shaped or have other suitable shapes. The fixing block (52) may be fixedly connected to the detector arm (51) by means such as bolt fixing, or may be formed integrally with the detector arm (51).

[0052] The second mounting portion is formed as a cantilever portion (54) fixed to the support frame of the radiation injection equipment, and an extension portion (55) is disposed at the end of the cantilever portion (54) spaced apart from the support frame, which is linearly coupled to the opening (53) of the fixed block (52), that is, the extension portion (55) can move along a straight line from the edge of the opening (53) into the interior of the opening (53). The longitudinal direction of the cantilever portion (54) coincides with the transport direction of the object to be inspected by the radiation injection equipment. The bottom portion of the opening (53) can be used as a limiting portion, and when mounting the detector set (50), the opening (53) of the fixed block (52) of the detector arm (51) is aligned with the extension portion (55), and the detector arm (51) is moved in a straight line relative to the extension portion (55) until the bottom portion of the opening (53) comes into contact with the extension portion (55), thereby limiting the detector set (50) to a predetermined mounting position.

[0053] A fixing device is positioned on one side in the width direction of the detector arm (51) (positioned on the same side as the fixing block (52)), and the cross-section of the fixing device is formed as a mounting reference surface, and the fixing device fastens the detector arm (51) to the mounting reference surface. Specifically, the fixing device includes a fixing member (56) and a fastening member (57), and the cross-section of the fixing member (56) far from the support frame forms a mounting reference surface (58) that contacts the surface (59) on one side in the width direction of the detector arm (41). The surface (59) is the mounting surface of the detector arm (51), and is processed to have good flatness together with the mounting reference surface (58), so that when the mounting surface (59) of the detector arm (51) contacts the mounting reference surface (58) and is fixed, the detector set (50) can be accurately positioned in the transport direction of the object to be inspected. The fastening member (57) is used to fasten the detector arm (51) to the cross section (58) of the fixing member (56). The fastening member (57) may be a fastening bolt, and a corresponding screw hole is formed on one side facing the fixing member (56) in the width direction of the detector arm (51) and on the fixing member (56), and the fixing bolt can be fastened to the mounting reference surface (58) by passing through the corresponding screw hole of the fixing member (56) and the detector arm (51) and tightening it. Additionally, the fixing device may include a plurality of fixing devices, for example, at least two, and the plurality of fixing devices may be spaced apart along the length direction of the detector set (50) to firmly fix and position the detector set (50).

[0054] By means of the above-described mounting fixing structure, when mounting the detector set (50), the detector unit faces the scanning area and the width direction aligns with the transport direction of the object to be inspected. First, the opening (53) of the fixing block (52) of the detector set (50) is aligned with the extension (55) of the cantilever part (54), causing the detector set (50) to move along the extension (55) until the bottom of the opening (53) comes into contact with the extension (55). Then, the detector set (50) is positioned relative to the mounting reference surface (58) of the fixing member (56) by passing the fastening member (57) through the corresponding screw hole of the fixing member (56) and the detector arm (51) and tightening it. When disassembling the detector set (50), the operation is performed in the reverse direction.

[0055] Accordingly, according to the mounting fixing structure described above, since the cantilever portion (54) extends along the transport direction of the object to be inspected in the radiation scanning equipment, the width direction of the detector set (50) is parallel to the transport direction of the object to be inspected, and the opening (53) of the fixing block (52) is oriented toward one side of the thickness direction of the detector set (50), and by orienting the detector crystal toward the scanning area and making the length direction of the detector arm the Y direction, the detector set (50) can be mounted or dismounted in a direction perpendicular to the transport direction of the object to be inspected. In addition, the fixing device is positioned on one side along the width direction of the detector set (50), that is, on one side along the Z direction of the detector, thereby facilitating the fixing or adjustment of the detector set. Accordingly, according to the mounting fixing structure according to the above embodiment, the detachment and maintenance of the detector set can be facilitated.

[0056] Additionally, optionally, in the mounting fixing structure, the second mounting portion is configured to support the detector set (50) at a predetermined mounting position while combined with the first mounting portion. That is, the cantilever portion (54) can support the entire detector set (50) by the fixing block (52) without any other auxiliary structure or tool after the detector set (50) moves to a predetermined mounting position relative to the extension portion (55) of the cantilever portion (54). In this way, when the detector set (50) is fastened, it can be operated without additional tools or without the operator supporting the detector set (50), thereby improving ease of operation.

[0057] Accordingly, by means of the mounting fixing structure of each of the above embodiments, the detector set in the radiation scanning device of the present application can be disassembled or mounted in a direction perpendicular to the transport direction of the object to be inspected with respect to the support frame, and can be fixed or adjusted on one side of the transport direction of the object to be inspected, thereby facilitating easy attachment, detachment, and maintenance.

[0058] As described above, in the mounting fixing structure of the above embodiment, the detector set is mounted or unmounted perpendicular to the transport direction of the object to be inspected. However, in some cases, this operation is not convenient. As mentioned above, in order to reduce the optical path distribution length of the radiation scanning equipment, it is desirable to set the distance between scanning stages as small as possible in a situation where the optical paths and / or components do not interfere with each other. Under this premise, since the size of the radiation source module is larger than that of the detector (especially in the Z direction) and the radiation source module is located outward in a direction perpendicular to the transport direction of the object to be inspected compared to the detector on the same side of another scanning stage, mounting or unmounting the detector set in a vertical direction perpendicular to the object to be inspected may result in interference with the radiation source module of an adjacent scanning stage (as shown in FIG. 1a, the radiation source module of the first scanning stage (A) may interfere with the unmounting and mounting of the detector set of the second scanning stage (B). In this case, the detector set of the second scanning stage (B), for example, located to the left of the scanning area of ​​the radiation source module near the first scanning stage (A), can be mounted or unmounted along the transport direction of the object to be inspected, for example, with respect to a mounting position, for example, a support frame. Accordingly, the detector set can be unmounted, fixed, or adjusted without the need to dismantle the radiation source module, thereby improving the convenience of operation. Correspondingly, a different mounting fixing structure is required for this detachable method. A specific embodiment of such a mounting fixing structure is described in detail below.

[0059] Similar to the mounting fixing structure of the above embodiment, the mounting fixing structure applied to disassemble and mount a detector set along the transport direction of an object to be inspected specifically comprises: a first mounting part fixedly disposed on the detector set; a second mounting part fixedly disposed on the support frame of the radiation scanning equipment and linearly coupled to the first mounting part, such that the detector set can move along the second mounting part to a predetermined mounting position while the first mounting part and the second mounting part are mutually coupled; and a fixing device disposed on one side in the width direction of the detector set and used to fix the detector set with respect to the mounting reference plane of the support frame. In some specific embodiments, the detector set is mounted and fixed to the support frame of the radiation scanning equipment via a detector arm, wherein the first mounting part is fixedly disposed on the detector arm, and the fixing device is disposed on one side along the width direction of the detector arm to fix the detector arm to the support frame and thereby fix the detector set.

[0060] FIGS. 9a and 9b show a mounting fixing structure of a detector set according to some specific embodiments, FIG. 9a shows an exploded perspective view of the detector arm and the mounting fixing structure, and FIG. 9b is a partial cross-sectional view of the detector arm in the mounted and fixed state of the detector set. FIGS. 9a and 9b do not show a complete detector set but only the detector arm, and a plurality of detector units can be arranged side by side along the longitudinal direction of the illustrated detector arm to form a complete detector set.

[0061] As illustrated in FIGS. 9a and 9b, the first mounting portion of the mounting fixing structure of the detector set (60) is specifically formed as a slide groove (62) extending in the width direction of the detector arm (61), wherein, when mounted on the support frame of the radiation scanning equipment, the width direction of the detector arm (61) coincides with the transport direction of the object to be inspected, and the length direction is perpendicular to the transport direction of the object to be inspected. The second mounting portion is formed as a slide bar (63) coupled to the slide groove (62). The slide groove (62) is formed as a slide groove having a semicircular opening, and the slide bar (63) is formed as a cylindrical slide bar corresponding to it. The slide bar (63) is fixedly positioned on the support frame or formed integrally with the support frame, and its length direction coincides with the transport direction of the object to be inspected. One end of the slide bar (63) near the support frame is set to be larger in size than the rest of the slide bar (63) to form a convex portion (64). The cross-section of the convex portion (64) facing the detector arm (61) forms a mounting reference surface (65), and the mounting reference surface (65) contacts a surface (66) on one side along the width direction of the detector arm (61). The surface (66) is a mounting surface of the detector arm (61) and is processed to have a good flatness together with the mounting reference surface (65). When the mounting surface (66) of the detector set contacts the mounting reference surface (65) and is positioned, the detector set (60) can be accurately positioned in the width direction, that is, in the direction of transport of the object to be inspected. The convex portion (64) may also be used as a limiting portion, and when mounting the detector set (60), the slide groove (62) is aligned with the slide bar (63), and the detector arm (61) is pushed along the slide bar (63) toward the support frame until the detector arm (61) comes into contact with the convex portion (64), thereby moving the detector arm (61) to a predetermined mounting position.

[0062] The fixing device is positioned on the opposite end of the convex portion (64) of the slide bar (63) and is positioned to be in contact with both sides of the detector arm (61) in the width direction, respectively, thereby limiting the position of the detector arm (61) in the width direction. Specifically, the fixing device includes a positioning sleeve (67) and a fastening member (68), the positioning sleeve (67) is placed on the opposite end of the convex portion (64) of the slide bar (63) and is in contact with the surface (69) of the opposite end of the detector arm (61) in the width direction, and the fastening member (68) fixes the positioning sleeve (67) to the opposite end of the convex portion (64) of the slide bar (63). Specifically, the fastening member (68) may be a fastening screw, and screw holes are provided at both ends of the positioning sleeve (67) and the slide bar (63). By inserting the fastening screw into the screw hole and tightening it, the positioning sleeve (67) is fastened to the slide bar (63), thereby fixing the detector arm (61) to the slide bar (63) (i.e., the support frame) in the width direction. At the same time, since the shape combination of the slide bar (63) and the slide groove (62) limits the degrees of freedom of the detector arm (61), the detector arm (61) can be completely positioned and fixed.

[0063] When mounting the detector set (60) using the above-described mounting fixing structure, the detector unit faces the scanning area and the width direction aligns with the transport direction of the object to be inspected. First, the slide groove (62) of the detector arm (61) is aligned with the slide bar (63), and the detector arm (61) is moved along the slide bar (63) until it comes into contact with the convex portion (64). Then, the positioning sleeve (67) is placed over the end opposite the convex portion (64) of the slide bar (63), and the detector arm (61) is fixed by screwing it onto the slide bar (63). When disassembling the detector set (60), the operation is performed in the reverse direction.

[0064] With the above-described mounting fixing structure, the slide bar (63) extends along the transport direction of the object to be inspected, that is, the linear movement coupling between the detector set and the support frame is formed along the transport direction of the object to be inspected, and the fixing device is positioned on one side in the width direction of the detector set, and the width direction of the detector set coincides with the transport direction of the object to be inspected. Accordingly, with the above-described mounting fixing structure, the detector set can be moved in the transport direction of the object to be inspected and mounted or dismounted, and can be fixed or adjusted on one side along the transport direction of the object to be inspected. Therefore, the detector set can be detached or maintained from the side in the transport direction of the object to be inspected. Even if the detector is obstructed by a radiation source of another scanning stage on the outer side perpendicular to the transport direction, the detachment or maintenance can be performed without obstruction by the radiation source, so there is no need to dismantle the radiation source, thereby improving the convenience of detachment and maintenance of the detector.

[0065] Additionally, optionally, the second mounting portion of the mounting fixing structure is configured to support the detector set (60) at a predetermined mounting position while combined with the first mounting portion. Specifically, the second mounting portion includes two slide bars (63), and accordingly, two slide grooves (62) are formed in the detector arm (61), and the two slide grooves (62) are arranged at both ends in the longitudinal direction of the detector arm (61), so that after the detector arm (61) moves to a predetermined mounting position on the two slide bars (63), the two slide bars (63) can support the detector set at a predetermined mounting position without requiring other auxiliary structures and / or tools. When the detector set is fastened in this way, it can be operated without additional tools or without the operator supporting the detector set, thereby improving ease of operation.

[0066] Although the detector arm is shown in a vertical direction in FIGS. 9a and 9b, the mounting fixing structure is not limited to use for mounting and unmounting a detector set positioned vertically in a radiation scanning device, and a detector set positioned in other directions may also use the mounting fixing structure.

[0067] Of course, the mounting fixing structure between the detector set (60) and the support frame is not limited to the embodiment shown in FIG. 9a-9b and other suitable mounting fixing structures may be adopted, for example, according to some embodiments, the linear movement coupling of the mounting fixing structure may be other suitable couplings, for example, a linear rotation coupling such as the coupling of a linear ball bearing and a cylindrical shaft, and according to other embodiments, the cross-section of the slide groove (62) may not be limited to a semicircle but may be a semi-rectangular shape, and accordingly, the slide bar (63) may not be limited to a cylindrical body but may have a shape such as a prism that is coupled with the slide groove (62).

[0068] Accordingly, the detector set of the radiation scanning equipment according to the present application can be configured to be easily detachable or maintained along the transport direction of the object to be inspected.

[0069] However, the embodiments of the present application are not limited to disassembling or mounting only along the transport direction of the object to be inspected or along a direction perpendicular to the transport direction of the object to be inspected; a part of the detector set may be disassembled or mounted along the transport direction of the object to be inspected, and another part of the detector set may be disassembled or mounted along a direction perpendicular to the transport direction of the object to be inspected. Specifically, which method to adopt can be determined according to the specific layout of the radiation scanning equipment, provided that disassembly and maintenance are easy.

[0070] Additionally, detector sets of each scanning stage located in different directions of the scanning area may be disassembled or mounted on a support frame by adopting different mounting fixing structures, but by utilizing the mounting reference planes of different detector sets, each detector set of the same scanning stage is positioned at a predetermined location along the transport direction of the object to be inspected after mounting, such that it is located within the same plane perpendicular to the Z direction or within a different plane perpendicular to the Z direction offset by a predetermined distance. Thus, it is sufficient to simply position the mounting reference planes of each detector set of the same scanning stage within the same plane perpendicular to the Z direction or within a different plane perpendicular to the Z direction offset by a predetermined distance.

[0071] In addition, the mounting fixing structure of each of the above embodiments is not limited to the detector set used in the radiation injection equipment of the present application, and may also be used in the detector set of other suitable radiation injection equipment.

[0072] As described above, the radiation scanning equipment according to an embodiment of the present application further includes a control device configured to control the radiation beam emission sequence of the radiation source module at each scanning stage. Optionally, the control device may be configured so that one radiation source point simultaneously emits a radiation beam to each radiation source module of each scanning stage. For example, the radiation source module of the first scanning stage (A) includes targets A1, A2, A3, … … An, the radiation source module of the second scanning stage (B) includes targets B1, B2, B3, … … Bn, and the radiation source module of the third scanning stage (C) includes targets C1, C2, C3, … … Cn. The control device may control the targets of the radiation source modules of the scanning stages (A, B, C) to simultaneously emit radiation beams in the order A1B1C1→A2B2C2→A3B3C3→ … … AnBnCn. The control device is not limited to controlling the targets of multiple radiation source modules to emit radiation beams simultaneously in the order above; that is, the order of targets in each radiation source module is not limited to the order from target 1 to target n, and may be spaced, reverse order, or random, and it is sufficient as long as it can pass through all targets in the radiation source module.

[0073] According to the above embodiment, since the radiation source module at each scanning stage emits a radiation beam simultaneously, the scanning speed of the radiation scanning equipment can be accelerated. Therefore, when the radiation scanning equipment is applied to a baggage transport system, the scanning speed can match the high-speed baggage transport speed of the baggage transport system, which helps to improve the baggage transport speed by preventing baggage jamming caused by safety inspections. Optionally, the transmission device of the radiation scanning equipment can be set to the same speed as the conveyor belt of the baggage transport system.

[0074] In addition, compared to the case where the radiation source module in each scanning stage emits a beam cyclically, by having the radiation source module in each scanning stage emit a beam simultaneously, the radiation dose can be reduced in addition to increasing the scanning speed (for example, the current can be 1 / 3 the size of the case where the beam is emitted cyclically while the voltage remains unchanged), which can reduce the requirements for radiation shielding of the radiation scanning equipment and help reduce the cost of the equipment.

[0075] According to some embodiments, the radiation beams of the radiation source modules of each scanning stage have different energies. The radiation source modules are optionally configured to emit radiation beams having different energies for different sizes in each direction of the object to be inspected. For example, when the object to be inspected is airport baggage, the size is generally small in the thickness direction (i.e., the vertical direction of the radiation scanning equipment, the Y direction in FIG. 1a) and the size is large in the width direction (i.e., the horizontal direction of the radiation scanning equipment, the X direction in FIG. 1a). Therefore, to obtain high transmittance in the width direction, a radiation source module placed on the left or right side of the scanning area (e.g., the radiation source module of the first scanning stage (A) and the radiation source module of the third scanning stage (C)) emits a radiation beam having high energy to ensure radiation transmittance in the width direction and increase the valid data detected by the detector, which is advantageous for improving image quality. Accordingly, a radiation source module positioned below the scanning area (e.g., a radiation source module of the second scanning stage (B)) emits a radiation beam of lower energy compared to a radiation source module positioned to the left or right of the scanning area, thereby ensuring radiation transmittance while reducing the radiation dose.

[0076] The specific embodiments of each radiation injection device according to the present application have been described above.

[0077] Embodiments of the present application also provide a baggage inspection radiation scanning system comprising a radiation scanning device and a baggage transport system as described in any of the above embodiments. The baggage transport system is used to transport multiple bags at a location such as an airport and includes a conveyor belt for placing and moving the bags. The radiation scanning device is used to scan multiple bags in the baggage transport system to inspect for prohibited items, etc., among the bags. The radiation scanning device may be positioned at the beginning, middle, or end of the baggage transport system, and the transmission device of the radiation scanning device is positioned adjacent to the conveyor belt of the baggage transport system so that the bags can move between the two. The radiation scanning device has a radiation source module positioned below the transmission device so that the transmission device is positioned at a height high from the ground to match the height of the conveyor belt of the baggage transport system, and optionally is equal to the height of the conveyor belt of the baggage transport system. In addition, the radiation scanning equipment includes a control device, wherein the control device causes one target of each radiation source module of each scanning stage to simultaneously emit a beam to scan the luggage, thereby configuring the radiation scanning equipment to inspect objects such as luggage at a detection speed that matches the transport speed of the luggage transport system, and optionally, the speed of the transmission device of the radiation scanning equipment is equal to the speed of the conveyor belt of the luggage transport speed. Accordingly, the radiation scanning system according to the present application can facilitate luggage transport between the luggage transport system and the radiation scanning equipment, and can perform safety inspections of luggage at a high speed.

[0078] The embodiments of the present application also provide a mounting positioning structure for a radiation source and a radiation injection device defined as each of the following items.

[0079] 1. As a mounting positioning structure for a radiation source of a radiation injection device,

[0080] The above radiation injection equipment includes a radiation source and a fixedly positioned support frame, and the mounting position determining structure includes a main body, and the main body can be fixedly connected to the radiation source and the support frame so that the radiation source can be fixedly mounted to the support frame through the main body.

[0081] The above mounting position determination structure is,

[0082] A moving device that moves the radiation source to a predetermined mounting position on the first plane;

[0083] A first positioning device for positioning the radiation source on the first plane;

[0084] A lifting device for adjusting the position of the radiation source along a first direction perpendicular to the first plane; and

[0085] A second positioning device for fixing the position of the radiation source in the first direction,

[0086] Mounting position determination structure.

[0087] 2. In the mounting position determination structure described in Item 1,

[0088] The above moving device includes rollers disposed at both ends along the longitudinal direction of the radiation source.

[0089] Mounting position determination structure.

[0090] 3. In the mounting position determination structure described in Item 1,

[0091] The first positioning device comprises a first positioning pin; and a first pinhole corresponding to the first positioning pin on the main body and the support frame.

[0092] Mounting position determination structure.

[0093] 4. In the mounting position determination structure described in Item 1,

[0094] The lifting device is positioned at both ends along the longitudinal direction of the radiation source, wherein one end of the lifting device is formed as a lifting roller and the other end is formed as a lifting jack screw.

[0095] Mounting position determination structure.

[0096] 5. In the mounting position determination structure described in Item 4,

[0097] The second positioning device is formed as a positioning pad block, and the positioning pad block is positioned below the main body after the radiation source is adjusted to a predetermined position along the first direction by the lifting device.

[0098] Mounting position determination structure.

[0099] 6. In a mounting position determining structure described in any one of items 1 to 5,

[0100] A method further comprising an adjustment means for adjusting the beam emission angle of the radiation source by rotating the radiation source along a predetermined axis.

[0101] Mounting position determination structure.

[0102] 7. In the mounting position determination structure described in Item 6,

[0103] A mounting shaft is disposed on the radiation source, and a corresponding shaft hole is disposed on the main body, and the main body is mounted on the mounting shaft of the radiation source through the shaft hole;

[0104] The above positioning mounting structure includes a positioning member and a fastening member, and the main body is positioned relative to the radiation source by the combination of the positioning member, the shaft hole, and the mounting shaft, and is fixedly connected to the radiation source by the fastening member;

[0105] The above adjustment device includes a rotary drive device, and the rotary drive device is capable of driving the radiation source to rotate around the mounting axis when the positioning member and the fastening member are released.

[0106] Mounting position determination structure.

[0107] 8. In the mounting position determination structure described in Item 7,

[0108] The rotary drive device comprises an adjustment block fixed to the radiation source and a jack screw disposed on the main body and in contact with the adjustment block, wherein the jack screw can be rotated to push the adjustment block and rotate the radiation source.

[0109] Mounting position determination structure.

[0110] 9. In the mounting position determination structure described in Item 7,

[0111] The above positioning member includes a second positioning pin and a corresponding second pinhole formed in the main body and the radiation source, and the fastening member includes a fixing bolt and a corresponding screw hole formed in the main body and the radiation source.

[0112] Mounting position determination structure.

[0113] 10. As a radiation injection device,

[0114] A radiation source and a fixedly positioned support frame, wherein the radiation source is fixedly positioned on the support frame through a mounting positioning structure described in any one of items 1 to 9,

[0115] Radiation injection equipment.

[0116] 11. In the radiation injection equipment described in Item 10,

[0117] The above radiation injection equipment adjusts the beam emission angle of the radiation source by rotating the radiation source through the above mounting position determination structure.

[0118] Radiation injection equipment.

[0119] The embodiments of the present application also provide a mounting structure for a detector and a radiation scanning device as defined in each of the following paragraphs.

[0120] 1. As a mounting fixed structure for a detector of a radiation scanning device,

[0121] The radiation scanning equipment comprises the detector and a fixedly positioned support frame, wherein the detector comprises at least two sets of detectors, and the sets of detectors are fixedly positioned on the support frame through the mounting fixing structure or detached from the support frame.

[0122] The above-mentioned mounting fixing structure is,

[0123] A first mounting part fixedly positioned on the above detector set;

[0124] A second mounting part fixedly disposed on the support frame and capable of linear movement coupling with the first mounting part, wherein the detector set is capable of moving along the second mounting part to a predetermined mounting position while the first mounting part and the second mounting part are coupled to each other; and

[0125] A fixing device disposed on one side along the width direction of the detector set and for fixing the detector set with respect to the mounting reference plane of the support frame,

[0126] Mounting fixed structure.

[0127] 2. In the mounting fixing structure described in Item 1,

[0128] The second mounting portion is also configured to support the detector set at the predetermined mounting position while combined with the first mounting portion.

[0129] Mounting fixed structure.

[0130] 3. In the mounting fixing structure described in Item 1 or 2,

[0131] The first mounting portion includes a slider extending along the longitudinal direction of the detector set, and the second mounting portion includes a fixed guide rail coupled to the slider.

[0132] Mounting fixed structure.

[0133] 4. In the mounting fixing structure described in Item 3,

[0134] The fixing device includes a fastening member and a positioning member disposed on the support frame, wherein the cross-section of the positioning member extending away from the support frame is formed as the mounting reference plane and abuts the surface of the one side in the width direction of the detector set, and the fastening member penetrates the positioning member and fastens the detector set with respect to the cross-section of the positioning member.

[0135] Mounting fixed structure.

[0136] 5. In the mounting fixing structure described in Item 3,

[0137] The slider is positioned on opposite sides in the width direction of the detector set and has an inner edge extending inward from the opposite edges in the width direction of the detector set.

[0138] The above fixed guide rail has an outer edge that extends outwardly from both opposing sides in the width direction, and

[0139] With the first mounting part combined with the second mounting part, the inner edge of the slider is located above the outer edge of the fixed guide rail, and the two are arranged in contact and overlapped to suspend the detector set from the fixed guide rail.

[0140] Mounting fixed structure.

[0141] 6. In the mounting fixing structure described in Item 1 or 2,

[0142] The first mounting portion is formed as a slide groove extending in the width direction of the detector set, and the second mounting portion is formed as a slide bar coupled to the slide groove.

[0143] Mounting fixed structure.

[0144] 7. In the mounting fixing structure described in Item 6,

[0145] A convex portion is formed at one end of the slider loader near the support frame, and the surface of the convex portion facing the detector set is formed as a mounting reference surface, and the mounting reference surface abuts the surface on the other side in the width direction of the detector set.

[0146] Mounting fixed structure.

[0147] 8. In the mounting fixing structure described in Item 7,

[0148] The above fixing device is positioned at the other end facing the convex portion of the slide rod, and is positioned to abut the convex portion on each side in the width direction of the detector set.

[0149] Mounting fixed structure.

[0150] 9. In the mounting fixing structure described in Item 8,

[0151] The above fixing device includes a positioning sleeve and a fastening member, wherein the positioning sleeve is fitted onto the other end of the slide rod and abuts against the one side in the width direction of the detector, and the fastening member fixes the positioning sleeve to the other end of the slide rod.

[0152] Mounting fixed structure.

[0153] 10. In the mounting fixing structure described in Item 6,

[0154] The second mounting portion includes two slide rods, and the first mounting portion includes two slide grooves formed at both ends along the longitudinal direction of the detector set, wherein the two slide rods and the two slide grooves are each coupled to mount the detector set at the predetermined mounting position.

[0155] Mounting fixed structure.

[0156] 11. In the mounting fixing structure described in Item 1 or 2,

[0157] The first mounting portion is formed as a fixing block that is fixed to one side in the width direction of the detector set, and the fixing block has an opening facing one side in the thickness direction of the detector set.

[0158] The second mounting portion is formed as a cantilever portion fixed to the support frame, and an extension portion is disposed at the end of the cantilever portion far from the support frame to be linearly coupled with the opening of the fixed block.

[0159] Mounting fixed structure.

[0160] 12. In the mounting fixing structure described in Item 11,

[0161] The above fixing device includes a fixing member and a fastening member disposed on the support frame, wherein a cross-section of the fixing member located away from the support frame is formed as a mounting reference surface, and the mounting reference surface abuts the surface of the one side in the width direction of the detector set, and the fastening member fastens the detector set to the cross-section of the fixing member.

[0162] Mounting fixed structure.

[0163] 13. In the mounting fixing structure described in Item 11,

[0164] In a state where the first mounting part and the second mounting part are combined, the cantilever part supports the detector set at the predetermined mounting position by the fixed block.

[0165] Mounting fixed structure.

[0166] 14. As a radiation injection device,

[0167] It comprises a detector and a fixedly positioned support frame, wherein the detector comprises at least two detector sets, and the detector sets are mounted and fixed to the support frame by a mounting and fixing structure described in any one of items 1 to 13, or are detached from the support frame.

[0168] Radiation injection equipment.

[0169] 15. In the radiation injection equipment described in Item 14,

[0170] The width direction of the detector set is parallel to the transport direction of the object to be inspected, and the length and thickness directions of the detector set are perpendicular to the transport direction of the object to be inspected, and the transport direction of the object to be inspected is the direction in which the object to be inspected is transported to pass through the injection area of ​​the radiation injection equipment,

[0171] Radiation injection equipment.

[0172] 16. In the radiation injection equipment described in Item 15,

[0173] The mounting reference plane used for each detector set is located within a plane perpendicular to the transport direction of the object to be inspected.

[0174] Radiation injection equipment.

[0175] 17. In the radiation injection equipment described in Item 14 or 15,

[0176] The direction in which the first mounting part moves in a straight line relative to the second mounting part is parallel or perpendicular to the transport direction of the object to be inspected.

[0177] Radiation injection equipment.

[0178] The foregoing description of this application is intended for the purpose of interpretation and explanation, not to make this application complete or to limit it to the specific forms described. Many modifications or changes are possible as long as they do not depart from the principles of the invention of this application. The described embodiments are intended to best illustrate the principles and practical applications of this application. The foregoing description enables those skilled in the art to better utilize and implement various embodiments and various modifications of this application. The scope of this application is defined by the appended claims.

Claims

Claim 1 A radiation scanning device for a baggage transport system, comprising: a transmission device for transporting an object to be inspected to pass through a scanning area of ​​the radiation scanning device; a plurality of scanning stages each disposed in a plurality of scanning planes in the transport direction of the object to be inspected, wherein each scanning stage includes a radiation source module and a detector set disposed opposite each other, and the radiation source module includes a plurality of source points for emitting a radiation beam; and a control device configured to control the beam emission sequence of the radiation source module in each scanning stage so that the radiation source module in each scanning stage emits a beam simultaneously from a single source point, wherein the radiation source modules of the plurality of scanning stages are each disposed below, to the left, and to the right of the scanning area. Claim 2 In claim 1, the radiation injection equipment is such that, when observed along the transport direction of the object to be inspected, the radiation source modules of the plurality of injection stages are arranged in a semi-closed structure that is open upward from the center of the injection area. Claim 3 In paragraph 2, the radiation source module is a distributed radiation source, and the radiation source is formed in a straight line, a broken linear or arc shape, a radiation injection device. Claim 4 In claim 1, a radiation scanning device wherein, in each scanning stage, the detector is positioned to surround the scanning area in at least two directions. Claim 5 In paragraph 4, the radiation source module is positioned below the scanning area in a scanning stage, and the detector has a U-shaped structure that is open below the scanning area. Claim 6 In paragraph 4, a radiation scanning device wherein the radiation source module is positioned to the left or right of the scanning area in a scanning stage, and the detector has an L-shaped structure or a U-shaped structure centered on the scanning area. Claim 7 A radiation scanning device according to claim 1, wherein the baggage transport system includes a conveyor belt, the transmission device is positioned adjacent to the conveyor belt of the baggage transport system, and the speed and height of the transmission device are set to match the speed and height of the conveyor belt of the baggage transport system. Claim 8 In paragraph 7, the radiation injection equipment, wherein the speed and height of the transmission device are set to be the same as the speed and height of the conveyor belt of the baggage transport system. Claim 9 In paragraph 1, a radiation injection device in which the radiation beam energy of each radiation source module of each injection stage is the same. Claim 10 A radiation injection device according to claim 1, wherein the radiation beam energy of the radiation source module positioned to the left or right of the injection area is higher than the radiation beam energy of the radiation source module positioned below the injection area. Claim 11 A baggage inspection radiation scanning system comprising a radiation scanning device and a baggage transport system as described in any one of claims 1 to 10, wherein the baggage transport system comprises a conveyor belt for transporting baggage, and the height and speed of the transmission device of the radiation scanning device and the conveyor belt are matched. Claim 12 A baggage inspection radiation scanning system according to claim 11, wherein the height and speed of the transmission device of the radiation scanning equipment and the conveyor belt of the baggage transport system are the same. Claim 13 A mounting position determining structure, wherein the mounting position determining structure for a radiation source of a radiation injection device described in any one of claims 1 to 10 comprises, wherein the radiation injection device comprises a radiation source and a fixedly positioned support frame, and the mounting position determining structure comprises a main body, wherein the main body is fixedly connected to the radiation source and the support frame so as to allow the radiation source to be fixedly mounted to the support frame through the main body, and wherein the mounting position determining structure comprises: a moving device for moving the radiation source to a predetermined mounting position on a first plane; a first position determining device for positioning the radiation source on the first plane; a lifting device for adjusting the position of the radiation source along a first direction perpendicular to the first plane; and a second position determining device for fixing the position of the radiation source in the first direction. Claim 14 A mounting fixing structure for a detector of a radiation scanning device described in any one of claims 1 to 10, wherein the radiation scanning device comprises the detector and a fixedly positioned support frame, and the detector comprises at least two sets of detectors, wherein the sets of detectors are fixedly positioned on the support frame by the mounting fixing structure or are detached from the support frame, and the mounting fixing structure comprises: a first mounting part fixedly positioned on the sets of detectors; a second mounting part fixedly positioned on the support frame and capable of linear movement and coupling with the first mounting part, wherein the sets of detectors are capable of moving along the second mounting part to a predetermined mounting position while the first mounting part and the second mounting part are coupled together; and a fixing device disposed on one side along the width direction of the sets of detectors and for fixing the sets of detectors with respect to the mounting reference plane of the support frame. Claim 15 delete

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