WO2022052891A1 - Backscatter inspection system and method - Google Patents

Backscatter inspection system and method Download PDF

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Publication number
WO2022052891A1
WO2022052891A1 PCT/CN2021/116725 CN2021116725W WO2022052891A1 WO 2022052891 A1 WO2022052891 A1 WO 2022052891A1 CN 2021116725 W CN2021116725 W CN 2021116725W WO 2022052891 A1 WO2022052891 A1 WO 2022052891A1
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WIPO (PCT)
Prior art keywords
module
housing
flying spot
inspection system
detection module
Prior art date
Application number
PCT/CN2021/116725
Other languages
French (fr)
Chinese (zh)
Inventor
陈志强
李元景
吴万龙
唐晓
唐乐
沈宗俊
孙秀平
Original Assignee
同方威视技术股份有限公司
清华大学
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Application filed by 同方威视技术股份有限公司, 清华大学 filed Critical 同方威视技术股份有限公司
Publication of WO2022052891A1 publication Critical patent/WO2022052891A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/203—Measuring back scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
    • G01N23/20008—Constructional details of analysers, e.g. characterised by X-ray source, detector or optical system; Accessories therefor; Preparing specimens therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
    • G01V5/222—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/05—Investigating materials by wave or particle radiation by diffraction, scatter or reflection
    • G01N2223/053—Investigating materials by wave or particle radiation by diffraction, scatter or reflection back scatter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/10—Different kinds of radiation or particles
    • G01N2223/101—Different kinds of radiation or particles electromagnetic radiation
    • G01N2223/1016—X-ray

Definitions

  • the present invention relates to the field of X-ray inspection, in particular to a backscatter inspection system and method.
  • X-ray backscatter imaging technology has been widely used in the field of safety inspection of human body, goods and vehicles due to its advantages of low radiation dose, good safety and sensitivity to lightweight materials.
  • X-ray backscatter imaging technology obtains material images within a certain depth on the surface of the object by detecting the intensity of X-ray scattering by different materials.
  • the backscatter inspection system includes an X-ray source and a detector, wherein the X-rays emitted by the X-ray source are formed by a pencil beam forming device to form a pencil beam, and the surface of the object to be inspected is scanned point by point; the detector receives the scattering signal of the object to form the surface of the object depth image.
  • Existing portable backscatter inspection systems usually have a fixed functional mode. However, for different objects to be inspected, the fixed functional mode is difficult to adapt to the needs of various occasions. In some cases, there are higher requirements for the portability of the inspection system, and in some cases, there are higher requirements for the performance of image penetration and resolution. For example, for the inside of the wall and the metal with a certain thickness, a high-power, high-penetration inspection system is required to achieve sufficient penetration performance, and the inspection system that can meet the requirements is often difficult to achieve portability. When scanning and inspecting some thinner boxes or smaller-sized items, the requirements for penetration performance are not high, but the requirements for image resolution may be higher. At the same time, this situation may require greater portability of the inspection system for more flexible operation.
  • One aspect of the present invention provides a backscatter inspection system, comprising: one or more flying spot exit modules for emitting X-ray pencil beams, the flying spot exit modules have an exit side and include a first housing and a first connection portion, The first connecting part is connected to the first casing, the first casing includes a first slit on the exit side, and the X-ray pencil beam emitted by the flying spot exit module is emitted from the first slit; and one or more detection modules are used for Receiving X-rays backscattered from the object to be inspected, the detection module has an incident side and a receiving side and includes a second housing, two detectors disposed in the second housing, and a second connecting portion, the two detectors being spaced apart to A second slit is formed, the second slit penetrates the incident side and the receiving side, and the second connection portion is connected to the second housing, wherein the flying point emission module and the detection module are configured to be connectable through the first connection portion and the second connection portion.
  • the flying-spot extraction module and the detection module are configured such that when the flying-spot extraction module and the detection module are connected to each other, a second slit between the first slit of the flying-spot extraction module and the two detectors of the detection module is formed.
  • the slits are aligned so that the X-ray pencil beam emitted from the flying spot exit module can continuously pass through the first slit and the second slit and exit from the receiving side of the detection module.
  • the first connection part and the second connection part adopt any one of the following connection modes: fastener connection; hinge connection; slide groove connection; snap connection; or magnetic connection.
  • the first housing of the flying spot exit module includes a front panel, wherein the first slit is provided on the front panel.
  • the flying spot extraction module further includes a filter installed at the first slit of the front panel for changing the X-ray energy spectrum before the X-ray pencil beam is emitted from the flying spot extraction module.
  • the flying spot emission module further includes a first electrical connection terminal disposed on the first casing
  • the detection module further includes a second electrical connection terminal disposed on the second casing, wherein the flying spot emission module and the The detection module is configured such that when the flying-spot extraction module and the detection module are connected to each other, the first electrical connection terminal and the second electrical connection terminal are engaged with each other to achieve electrical connection and/or communication connection between the flying-spot extraction module and the detection module; or The flying spot emission module and the detection module are configured to communicate with each other through wireless communication.
  • the backscatter inspection system further includes a handle so that the backscatter inspection system can be operated by hand, wherein the handle is provided on the first housing or the second housing, and the handle is on the first housing or the second housing The position is adjustable.
  • the flying spot emission module includes a controller configured to generate a backscattered X-ray image according to the backscattered X-ray received by the detector.
  • the backscatter inspection system further includes a display for displaying the backscatter X-ray image generated by the controller, wherein the display is connected to and/or provided separately from the first housing.
  • the flying spot extraction module further includes an X-ray source and a pencil beam forming device disposed in the first housing, wherein the X-ray source is used to generate X-rays, and the pencil beam forming device is used to generate the X-ray source.
  • the X-rays are modulated into a rotating X-ray pencil beam.
  • Another aspect of the present invention provides a backscatter inspection method, including: providing a backscatter inspection system according to an embodiment of the present invention, which includes a plurality of flying spot emission modules and a plurality of detection modules; One of the flying spot ejection modules; select one of the multiple detection modules according to the detection requirements and the selected flying spot ejection module; detachably connect the selected flying spot ejection module and the selected detection module; use the connection The flying spot emission module and detection module are scanned and inspected.
  • a backscatter inspection system may include a detachable flying spot exit module and a detection module.
  • Different flying point emission modules and detection modules can meet different needs and adapt to different usage scenarios.
  • the combination of the flying spot emission module and the detection module can be flexibly selected to achieve a more ideal use state. Flying point emission module and detection module can be easily connected and removed. Therefore, the portability and operational flexibility of the backscatter inspection system can be improved.
  • the applicable scenarios of the backscatter inspection system can also be expanded, and the imaging quality and inspection accuracy of the backscatter inspection system can be improved.
  • FIG. 1 is a schematic diagram of a backscatter inspection system according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a fastener connection according to an embodiment of the present invention.
  • FIG 3 is a schematic diagram of a hinged connection according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a locking structure of a hinged connection according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a locking structure of a hinged connection according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a chute connection according to an embodiment of the present invention.
  • FIG. 7 is a schematic cross-sectional view of a chute connection according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a snap-fit connection according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a magnetic connection according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a backscatter inspection system with electrical connection terminals in accordance with an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a backscatter inspection system with a handle according to an embodiment of the present invention.
  • a portable backscatter inspection system may include a housing, an X-ray source, a pencil beam forming device, two detectors, a controller and a display, among others.
  • the X-ray source, pencil beam forming device, detector and controller are arranged inside the housing.
  • the X-ray source is located at the rear of the backscatter inspection system, the detector is located at the front, and the pencil beam forming device is located between the X-ray source and the detector.
  • An X-ray source is used to generate X-rays.
  • the pencil beam forming device is used to modulate the X-rays generated by the X-ray source into a rotating X-ray pencil beam.
  • the detector is used for receiving X-rays backscattered from the object to be inspected after the X-ray pencil beam modulated by the pencil beam forming device irradiates the object to be inspected.
  • the controller is configured to generate a backscattered X-ray image based on the backscattered X-ray received by the detector.
  • the display is used to display the backscattered X-ray image generated by the controller.
  • the X-ray source emits X-rays (such as wide-angle X-rays); the pencil beam forming device modulates the X-rays emitted by the X-ray source into a high-speed rotating X-ray pencil beam ; The X-ray pencil beam passes through the gap between the two detectors and finally irradiates on the object to be inspected.
  • the pencil beam forming device modulates the pencil beam so that its projection moves at a high speed along a straight line, thereby performing one-dimensional scanning of the object to be inspected.
  • the operator moves the backscatter inspection system in a direction perpendicular to the one-dimensional scanning direction, so that the backscatter inspection system scans through a certain area, and performs two-dimensional scanning of the object to be inspected.
  • the detector may receive X-rays backscattered from the object to be inspected during the scanning process and generate backscatter signals
  • the controller may acquire the backscatter signals from the detector and generate X-ray backscatter images, such as two-dimensional images with a certain depth.
  • the display can display the resulting X-ray backscattered image.
  • the outer surface of the backscatter inspection system adheres to the surface of the object to be inspected.
  • this portable backscatter inspection system integrates the X-ray source, the pencil beam forming device and the detector in one housing, so it can only provide a fixed function mode.
  • the backscatter inspection system includes a detachable flying spot emission module and a detection module, whereby different working modes of the backscatter inspection system can be switched through free combinations of different flying spot emission modules and different detection modules .
  • the backscatter inspection system according to the embodiment of the present invention can perform scanning inspection on objects, such as vehicles, building walls, or other objects that need to be identified for the safety of internal structures and internal items.
  • Backscatter inspection systems according to embodiments of the present invention are particularly suitable as portable backscatter inspection systems.
  • the backscatter inspection system may include a flying spot emission module 1 , a detection module 2 and a display 3 .
  • the flying spot emission module 1 is used to emit X-ray pencil beams.
  • the detection module 2 is configured to receive X-rays backscattered from the object to be inspected after the X-ray pencil beam emitted from the flying-point emission module 1 is irradiated to the object to be inspected.
  • the display 3 is used for displaying the generated backscattered X-ray image according to the backscattered X-ray received by the detection module 2 .
  • the flying spot extraction module 1 may include a housing 11 , an X-ray source 12 , a pencil beam forming device 13 , a controller 14 and a connection part 15 .
  • the X-ray source 12 , the pencil beam forming device 13 and the controller 14 may be provided inside the housing 11 .
  • the connection portion 15 is connected to the housing 11 for connection with a connection portion (described below) of the detection module 2 . It should be noted that Figure 1 shows the housing 11 in partial cross-section for ease of showing the components within the housing 11 .
  • the X-ray source 12 is used to generate X-rays.
  • the pencil beam forming device 13 is used to modulate the X-rays generated by the X-ray source 12 into a rotating X-ray pencil beam.
  • the pencil beam forming device 13 may take various forms, such as a rotary modulation device such as a disc type, a wheel type, and a column type.
  • the side that emits the X-ray pencil beam of the flying spot exit module 1 is the exit side.
  • the housing 11 includes a slit 16 on the exit side. The modulated X-ray pencil beam exits the flying spot exit module 1 from the slit 16 .
  • the X-ray source 12 is located at the rear of the backscatter inspection system, the slit 16 is located at the front, and the pencil beam forming device 13 is located between the X-ray source 12 and the slit 16 .
  • front and “front” refer to the side of the backscatter inspection system facing the object to be inspected, and “rear” and “rear” refer to the side of the backscatter inspection system that is remote from the object to be inspected.
  • the controller 14 is configured to generate a backscattered X-ray image according to the backscattered X-ray received by the detection module 2 .
  • the controller 14 may be disposed inside the casing 11 as shown in FIG. 1 , eg, disposed on the side of the casing 11 away from the pencil bundle forming device 13 , or may be disposed outside the casing 11 .
  • the controller 14 is connected in communication with the X-ray source 12, the detection module 2, the pencil beam forming device 13, etc., for example, by wired communication or wireless communication.
  • the housing 11 of the flying spot exit module 1 may include a front panel 17 .
  • the slit 16 is located on the front panel 17 .
  • the front panel 17 may be made of a material with an X-ray shielding effect, so that the scattering caused inside the flying spot exit module 1 before the X-ray pencil beam exits the slit 16 may be reduced to the detection module 2 In particular, the scattering reaching the back of the detection module 2 is effectively reduced.
  • the connection portion 15 may be provided on the front panel 17 .
  • the flying spot emission module 1 may further include a filter.
  • the filter is mounted at the slot 16 , for example at the slot 16 on the front panel 17 .
  • the filter can change the X-ray energy spectrum before the X-ray pencil beam is emitted from the flying spot exit module 1 . Thereby, the effective energy of the X-ray energy spectrum can be increased, and the performance of the backscatter inspection system, such as penetration and resolution, can be improved.
  • the filters can be of different materials and/or different thicknesses.
  • the detection module 2 may include a housing 21 , two detectors 22 and a connection part 23 .
  • the detector 22 is provided in the housing 21 .
  • the two detectors 22 are spaced apart such that a slit 24 is formed between the two detectors 22 .
  • the slit 24 is used for the X-ray pencil beam emitted from the flying spot extraction module 1 to pass through and reach the surface of the object to be inspected.
  • the detection module 2 includes an incident side and a receiving side.
  • the incident side of the detection module 2 is the side where the X-ray pencil beam emitted by the flying point exit module 1 enters the detection module 2, and the receiving side of the detection module 2 is the side facing the object to be inspected to receive backscattered X-rays.
  • the slit 24 penetrates the incident side and the receiving side of the detection module 2 .
  • the connection part 23 is connected to the housing 21 for connection with the connection part 15 of the flying point ejection module 1 . In some embodiments, as shown in FIG. 1 , the connecting portion 23 is provided on the incident side of the detection module 2 .
  • the flying spot emission module 1 and the detection module 2 may be detachably connected to each other through the respective connection parts 15 and 23 .
  • the slit 16 of the flying spot extraction module 1 is aligned with the slit 24 between the two detectors 22 of the detection module 2, namely the two slits 16 and 24 Form interconnected X-ray paths.
  • the X-ray pencil beam emitted from the flying spot emission module 1 can continuously pass through the slit 16 and the slit 24 and be emitted from the receiving side of the detection module 2, and finally reach the surface of the object to be inspected.
  • connection parts 15 and 23 of the flying-spot extraction module 1 and the detection module 2 can be detachably connected to the flying-spot extraction module 1 and the detection module 2 in various ways.
  • the connection parts 15 and 23 may adopt any one of the following connection methods: fastener connection, hinge connection, sliding groove connection, snap connection or magnetic connection, and the like.
  • the display 3 is used to display the backscatter X-ray image generated by the controller 14 .
  • the display 3 is communicatively connected to the controller 14, for example by wired or wireless communication.
  • the display 3 may be disposed outside the housing 11 , eg, separate from the housing 11 as shown in FIG. 1 , or the display 3 may be attached to the housing 11 , eg detachably.
  • the flying spot emission module 1 and the detection module 2 can be connected by bolts 51 and threaded holes 52 and so on to achieve detachable fastener connection.
  • the flying spot emission module 1 and the detection module 2 can be completely connected and fixed by fasteners.
  • the flying point ejection module 1 and the detection module 2 can also be positioned first through a partial chute, a card slot, etc., and then connected and fixed through fasteners.
  • FIG. 3 is a schematic diagram of a hinged connection according to an embodiment of the present invention.
  • the flying spot emission module 1 and the detection module 2 can be detachably connected by a hinge through the hinge shaft 53 and the clamping portion 54 .
  • the hinge shaft 53 can be fixed on one of the flying spot emission module 1 and the detection module 2, and the clamping part 54 can be fixed on the other.
  • the flying-point shooting module 1 and the detection module 2 can be rotated relative to each other through the hinge shaft 53 to achieve alignment of the respective slits.
  • the backscatter inspection system can also realize the fixing between the flying spot emission module 1 and the detection module 2 through various locking structures 55 .
  • the locking structure 55 may be disposed on a side away from the hinge shaft 53 and the clamping portion 54 on the opposite surface between the flying-point emission module 1 and the detection module 2 .
  • 4 is a schematic diagram of a locking structure of a hinged connection according to an embodiment of the present invention. As shown in FIG. 4 , the locking structure can adopt a ball-type lock 55A.
  • 5 is a schematic diagram of a locking structure of a hinge connection according to another embodiment of the present invention. As shown in FIG. 4, the locking structure may employ a locking pin 55C with a spring ball 55B.
  • FIG. 6 is a schematic diagram of a chute connection according to an embodiment of the present invention.
  • the flying spot ejection module 1 and the detection module 2 can be detachably connected by the chute through the chute 56 and the protruding slider 57 .
  • One of the flying spot ejection module 1 and the detection module 2 may include a chute 56 , and the other may include a slider 57 .
  • the detachable connection between the flying spot emission module 1 and the detection module 2 can be achieved by inserting the slider 57 into the sliding slot 56 .
  • the chute 56 and the sliding block 57 can be straight chute and straight sliding block, or, as shown in FIG.
  • the flying spot ejection module 1 and the detection module 2 can be detachably connected by a snap head 58 and a snap slot 59 .
  • One of the flying spot ejection module 1 and the detection module 2 may include a snap head 58 , and the other may include a snap slot 59 .
  • the snap head 58 can be stuck in the snap slot 59 and released from the snap slot 59 through elastic deformation, so as to realize the detachable connection between the flying spot shooting module 1 and the detection module 2 .
  • FIG. 9 is a schematic diagram of a magnetic connection according to an embodiment of the present invention.
  • the flying spot emission module 1 and the detection module 2 can be detachably connected by a magnetic body 61 .
  • the magnetic bodies 61 may be correspondingly disposed on the flying spot emission module 1 and the detection module 2 respectively. Through the magnetic attraction between different magnetic bodies 61 on the flying spot emission module 1 and the detection module 2, the detachable connection between the flying spot emission module 1 and the detection module 2 can be realized.
  • corresponding positioning structures may also be provided on the flying spot extraction module 1 and the detection module 2 to improve the distance between the flying spot extraction module 1 and the detection module 2 Connectivity and accuracy.
  • the flying spot emission module 1 and the detection module 2 may also implement communication connection and/or electrical connection.
  • 10 is a schematic diagram of a backscatter inspection system with electrical connection terminals in accordance with an embodiment of the present invention.
  • the flying spot emission module 1 may include electrical connection terminals 18 provided on the housing 11
  • the detection module 2 may include electrical connection terminals 25 provided on the housing 21 .
  • the electrical connection terminals 18 and 25 may be provided on the flying spot emission module 1 and the detection module 2 corresponding to each other.
  • the electrical connection terminals 18 and 25 can be engaged with each other, thereby realizing the communication between the flying spot emission module 1 and the detection module 2 connection and/or electrical connection.
  • the flying spot emission module 1 and the detection module 2 may also be connected by wireless communication.
  • the flying spot emission module 1 and the detection module 2 can be connected by wireless communication through WIFI, NFC, Bluetooth, and the like.
  • the X-ray signals collected by the detection module 2 by receiving the backscattered X-rays can be transmitted to the controller 14 of the flying spot emission module 1 to generate a backscattered image .
  • the detection module 2 may further include a preamplifier 26 for shaping and amplifying the X-ray signal received by the detector 22 .
  • the backscatter inspection system may further comprise a handle 5 for hand-held operation.
  • the handle 5 can be disposed on the housing 11 of the flying spot emission module 1 or the housing 21 of the detection module 2 .
  • the position of the handle 5 on the backscatter inspection system is adjustable.
  • the center of gravity of the installed backscatter inspection system may be different.
  • the position of the handle 15 can be adjusted according to the center of gravity of the backscatter inspection system, so as to improve the comfort and stability of the operator in the process of holding the backscatter inspection system for scanning inspection.
  • the backscatter inspection system may include a plurality of flying spot emission modules 1 and/or a plurality of detection modules 2 .
  • Different flying spot ejection modules 1 can provide different functions. For different usage scenarios, different flying point ejection modules 1 can be selected.
  • Different flying-spot emission modules 1 may have different X-ray energy, current, flying-spot scanning opening angle, and the like.
  • the flying spot emission module 1 with a low-power X-ray source can provide better portability and facilitate single-person operation.
  • the flying spot emission module 1 with a high-power X-ray source can achieve better penetration, resolution and other performances, but has poor portability, and can be operated with assistance such as a robotic arm.
  • the detection modules 2 can also provide different functions.
  • the low-energy detection module 2 is more efficient for low-energy X-rays, while the high-energy detection module 2 is more efficient for high-energy X-rays.
  • the large-sized detection module 2 has better spatial coverage for scattered rays, while the small-sized detection module 2 can be used in a narrower space.
  • different flying spot emission modules 1 and different detection modules 2 may all use the same connection mode, which is convenient for mutual switching and matching.
  • the controller 14 can have several built-in typical functional modes, and can provide suitable functional modes according to the selected flying spot emission module 1 and detection module 2, the type of the object to be inspected, etc., for example, including X-ray energy, detector gain, etc.
  • Embodiments of the present invention also provide a backscatter inspection method using the above-mentioned backscatter inspection system, wherein the backscatter inspection system includes a plurality of flying spot emission modules 1 and a plurality of detection modules 2 .
  • the backscatter inspection method may include the following steps: selecting a flying spot emission module 1 according to the flying spot emission requirements (for example, required portability, penetration performance, resolution performance, the material of the object to be inspected, etc.); according to the detection requirements (for example, the required space coverage, the size of the object to be inspected, etc.) and the selected flying spot extraction module 1, and one detection module 2 is selected; the selected flying spot extraction module 1 and the detection module 2 are detachably connected to each other; and Use the connected flying spot emission module 1 and detection module 2 for scanning inspection.
  • the backscatter inspection method may further set a suitable functional mode according to scanning requirements (eg, the type of the object to be inspected, etc.).
  • a backscatter inspection system may include a detachable flying spot exit module and a detection module.
  • Different flying point emission modules and detection modules can meet different needs and adapt to different usage scenarios.
  • the combination of the flying spot emission module and the detection module can be flexibly selected to achieve a more ideal use state. Flying point emission module and detection module can be easily connected and removed. Therefore, the portability and operational flexibility of the backscatter inspection system can be improved.
  • the applicable scenarios of the backscatter inspection system can also be expanded, and the imaging quality and inspection accuracy of the backscatter inspection system can be improved.

Abstract

A backscatter inspection system, comprising: one or more flying point emission modules (1), the flying point emission module(s) (1) having an emission side and comprising a first housing (11) and a first connecting portion (15) connected to the first housing (11), and the first housing (11) comprising a first slit (16) located on the emission side; and one or more detection modules (2), the detection module(s) (2) having an incident side and a receiving side, and comprising a second housing (21) and two detectors (22) and second connecting portions (23) provided in the second housing (21), the two detectors (22) being arranged spaced apart so as to form a second slit ( 24), the second slit (24) penetrating the incident side and the receiving side, and the second connecting portions (23) being connected to the second housing (21). The flying point emission module (1) and the detection module (2) may be detachably connected to one another by means of the first connecting portion (15) and the second connecting portions (23). When the flying point emission module (1) and the detection module (2) are connected to one another, the first slit (16) is aligned with the second slit (24), so that an X-ray pencil beam sent from the flying point emission module (1) can continuously pass through the first slit (16) and the second slit (24) and be emitted from the receiving side of the detection module (2). The present invention further relates to a backscatter inspection method using a backscatter inspection system. The portability and operational flexibility of the backscatter inspection system can be improved, the applicable scenarios of the backscatter inspection system expanded, and the imaging quality and inspection accuracy of the backscatter inspection system improved.

Description

背散射检查系统和方法Backscatter inspection system and method 技术领域technical field
本发明涉及X射线检查领域，特别是涉及背散射检查系统和方法。The present invention relates to the field of X-ray inspection, in particular to a backscatter inspection system and method.
背景技术Background technique
X射线背散射成像技术因其辐射量剂量低、安全性好和对轻质材料敏感等优点，已被广泛应用于人体、货物和车辆的安全检查领域。X射线背散射成像技术通过探测不同物质对X射线散射的强弱，得到物体表面一定深度以内的物质图像。背散射检查系统包括X射线源和探测器，其中X射线源发出的X射线经过笔束形成装置形成笔束，在待检查物体表面进行逐点扫描；探测器接收物体的散射信号，形成物体表面深度图像。X-ray backscatter imaging technology has been widely used in the field of safety inspection of human body, goods and vehicles due to its advantages of low radiation dose, good safety and sensitivity to lightweight materials. X-ray backscatter imaging technology obtains material images within a certain depth on the surface of the object by detecting the intensity of X-ray scattering by different materials. The backscatter inspection system includes an X-ray source and a detector, wherein the X-rays emitted by the X-ray source are formed by a pencil beam forming device to form a pencil beam, and the surface of the object to be inspected is scanned point by point; the detector receives the scattering signal of the object to form the surface of the object depth image.
现有的背散射检查系统较多应用于集装箱、车辆、人员及包裹的固定式安检设备中。这种情况下，背散射检查系统的位置固定，待检查对象移动来进行通过式检查。这种检查方式要求待检查对象与背散射检查系统保持一定距离并且以固定角度成像，从而限制了背散射检查系统的应用范围。随着X射线源与探测器技术的进步，背散射检查系统得以实现小型化。便携式背散射检查系统可以贴近待检查对象，多角度全方位对待检查对象进行扫描成像。同时，便携式背散射检查系统轻巧便于携带，充分扩展了检查系统的可应用场合。Existing backscatter inspection systems are mostly used in fixed security inspection equipment for containers, vehicles, personnel and packages. In this case, the position of the backscatter inspection system is fixed, and the object to be inspected moves to perform a pass-through inspection. This inspection method requires the object to be inspected to maintain a certain distance from the backscatter inspection system and to image at a fixed angle, thus limiting the application range of the backscatter inspection system. Advances in X-ray source and detector technology have allowed backscatter inspection systems to be miniaturized. The portable backscatter inspection system can be close to the object to be inspected, and scan and image the object to be inspected from multiple angles and in all directions. At the same time, the portable backscatter inspection system is light and easy to carry, which fully expands the applicable occasions of the inspection system.
现有的便携式背散射检查系统通常具有固定的功能模式。但是对于不同的待检查对象，固定的功能模式难以适应各种场合下的需求。有的场合对检查系统的便携性有更高的要求，有的场合对图像的穿透、分辨等性能有更高的要求。例如，对墙体内部、有一定厚度的金属内部，需要大功率、高穿透的检查系统，才能达到足够的穿透性能，而能够实现需求的检查系统往往难以实现便携性。在对一些较薄的箱体或尺寸较小的物品进行扫描检查时，对穿透性能的要求不高，而可能对图像分辨的要求更高。同 时，这种情况可能对检查系统的便携性要求更高，以实现更为灵活的操作。Existing portable backscatter inspection systems usually have a fixed functional mode. However, for different objects to be inspected, the fixed functional mode is difficult to adapt to the needs of various occasions. In some cases, there are higher requirements for the portability of the inspection system, and in some cases, there are higher requirements for the performance of image penetration and resolution. For example, for the inside of the wall and the metal with a certain thickness, a high-power, high-penetration inspection system is required to achieve sufficient penetration performance, and the inspection system that can meet the requirements is often difficult to achieve portability. When scanning and inspecting some thinner boxes or smaller-sized items, the requirements for penetration performance are not high, but the requirements for image resolution may be higher. At the same time, this situation may require greater portability of the inspection system for more flexible operation.
为此，需要一种能够提供可切换功能模式的背散射检查系统和方法。To this end, there is a need for a backscatter inspection system and method that can provide switchable functional modes.
发明内容SUMMARY OF THE INVENTION
本发明的一个目的是提供一种能够提供可切换功能模式的背散射检查系统和方法。本发明的另一目的是提供一种能够可拆卸的背散射检查系统。It is an object of the present invention to provide a backscatter inspection system and method capable of providing switchable functional modes. Another object of the present invention is to provide a backscatter inspection system that can be detached.
本发明的一方面提供一种背散射检查系统，包括：一个或多个飞点出射模块，用于发出X射线笔束，飞点出射模块具有出射侧并且包括第一外壳和第一连接部，第一连接部连接到第一外壳，第一外壳包括位于出射侧的第一狭缝，飞点出射模块发出的X射线笔束从第一狭缝射出；和一个或多个探测模块，用于接收从待检查物体背散射的X射线，探测模块具有入射侧和接收侧并且包括第二外壳、设置在第二外壳中的两个探测器和第二连接部，两个探测器间隔开布置以形成第二狭缝，第二狭缝贯穿入射侧和接收侧，第二连接部连接到第二外壳，其中，飞点出射模块和探测模块构造成能够通过第一连接部和第二连接部可拆卸地彼此连接，其中，飞点出射模块和探测模块构造成当飞点出射模块和探测模块彼此连接时，飞点出射模块的第一狭缝与探测模块的两个探测器之间的第二狭缝对准，以使得从飞点出射模块发出的X射线笔束能够连续穿过第一狭缝和第二狭缝并且从探测模块的接收侧射出。One aspect of the present invention provides a backscatter inspection system, comprising: one or more flying spot exit modules for emitting X-ray pencil beams, the flying spot exit modules have an exit side and include a first housing and a first connection portion, The first connecting part is connected to the first casing, the first casing includes a first slit on the exit side, and the X-ray pencil beam emitted by the flying spot exit module is emitted from the first slit; and one or more detection modules are used for Receiving X-rays backscattered from the object to be inspected, the detection module has an incident side and a receiving side and includes a second housing, two detectors disposed in the second housing, and a second connecting portion, the two detectors being spaced apart to A second slit is formed, the second slit penetrates the incident side and the receiving side, and the second connection portion is connected to the second housing, wherein the flying point emission module and the detection module are configured to be connectable through the first connection portion and the second connection portion. Removably connected to each other, wherein the flying-spot extraction module and the detection module are configured such that when the flying-spot extraction module and the detection module are connected to each other, a second slit between the first slit of the flying-spot extraction module and the two detectors of the detection module is formed. The slits are aligned so that the X-ray pencil beam emitted from the flying spot exit module can continuously pass through the first slit and the second slit and exit from the receiving side of the detection module.
根据本发明的实施例，第一连接部和第二连接部采用下列连接方式中的任一项：紧固件连接；铰链连接；滑槽连接；卡扣连接；或磁性连接。According to an embodiment of the present invention, the first connection part and the second connection part adopt any one of the following connection modes: fastener connection; hinge connection; slide groove connection; snap connection; or magnetic connection.
根据本发明的实施例，飞点出射模块的第一外壳包括前面板，其中第一狭缝设置在前面板上。According to an embodiment of the present invention, the first housing of the flying spot exit module includes a front panel, wherein the first slit is provided on the front panel.
根据本发明的实施例，飞点出射模块还包括安装在前面板的第一狭缝处的滤片，用于在X射线笔束从飞点出射模块射出前改变X射线能谱。According to an embodiment of the present invention, the flying spot extraction module further includes a filter installed at the first slit of the front panel for changing the X-ray energy spectrum before the X-ray pencil beam is emitted from the flying spot extraction module.
根据本发明的实施例，飞点出射模块还包括设置在第一外壳上的第一电气连接端子，探测模块还包括设置在第二外壳上的第二电气连接端子， 其中，飞点出射模块和探测模块构造成当飞点出射模块和探测模块彼此连接时，第一电气连接端子和第二电气连接端子彼此接合以实现飞点出射模块和探测模块之间的电连接和/或通信连接；或者飞点出射模块和探测模块构造成通过无线通信彼此通信。According to an embodiment of the present invention, the flying spot emission module further includes a first electrical connection terminal disposed on the first casing, and the detection module further includes a second electrical connection terminal disposed on the second casing, wherein the flying spot emission module and the The detection module is configured such that when the flying-spot extraction module and the detection module are connected to each other, the first electrical connection terminal and the second electrical connection terminal are engaged with each other to achieve electrical connection and/or communication connection between the flying-spot extraction module and the detection module; or The flying spot emission module and the detection module are configured to communicate with each other through wireless communication.
根据本发明的实施例，背散射检查系统还包括手柄，以便于背散射检查系统被手持操作，其中，手柄设置在第一外壳或第二外壳上，并且手柄在第一外壳或第二外壳上的位置是可调节的。According to an embodiment of the present invention, the backscatter inspection system further includes a handle so that the backscatter inspection system can be operated by hand, wherein the handle is provided on the first housing or the second housing, and the handle is on the first housing or the second housing The position is adjustable.
根据本发明的实施例，飞点出射模块包括控制器，用于根据探测器接收的背散射X射线，生成背散射X射线图像。According to an embodiment of the present invention, the flying spot emission module includes a controller configured to generate a backscattered X-ray image according to the backscattered X-ray received by the detector.
根据本发明的实施例，背散射检查系统还包括显示器，用于显示控制器所生成的背散射X射线图像，其中显示器连接到第一外壳和/或与第一外壳分开设置。According to an embodiment of the present invention, the backscatter inspection system further includes a display for displaying the backscatter X-ray image generated by the controller, wherein the display is connected to and/or provided separately from the first housing.
根据本发明的实施例，飞点出射模块还包括设置在第一外壳中的X射线源和笔束形成装置，其中X射线源用于生成X射线，笔束形成装置用于将X射线源生成的X射线调制成旋转的X射线笔束。According to an embodiment of the present invention, the flying spot extraction module further includes an X-ray source and a pencil beam forming device disposed in the first housing, wherein the X-ray source is used to generate X-rays, and the pencil beam forming device is used to generate the X-ray source. The X-rays are modulated into a rotating X-ray pencil beam.
本发明的另一方面提供一种背散射检查方法，包括：提供根据本发明的实施例的背散射检查系统，其包括多个飞点出射模块和多个探测模块；根据飞点出射需求选择多个飞点出射模块中的一者；根据探测需求和选择的飞点出射模块，选择多个探测模块中的一者；将选择的飞点出射模块和选择的探测模块可拆卸地连接；使用连接的飞点出射模块和探测模块进行扫描检查。Another aspect of the present invention provides a backscatter inspection method, including: providing a backscatter inspection system according to an embodiment of the present invention, which includes a plurality of flying spot emission modules and a plurality of detection modules; One of the flying spot ejection modules; select one of the multiple detection modules according to the detection requirements and the selected flying spot ejection module; detachably connect the selected flying spot ejection module and the selected detection module; use the connection The flying spot emission module and detection module are scanned and inspected.
根据本发明的实施例，背散射检查系统可以包括可拆分的飞点出射模块和探测模块。不同的飞点出射模块和探测模块可以满足不同的需求，适应于不同的使用场景。根据不同的需求，可以灵活地选择飞点出射模块和探测模块的组合，以实现更理想的使用状态。飞点出射模块和探测模块可以方便地连接和拆卸。因此，可以提高背散射检查系统的便携性和操作灵活性。同时，还可以扩展背散射检查系统的可应用场景，提高背散射检查系统的成像质量和检查准确性。According to an embodiment of the present invention, a backscatter inspection system may include a detachable flying spot exit module and a detection module. Different flying point emission modules and detection modules can meet different needs and adapt to different usage scenarios. According to different needs, the combination of the flying spot emission module and the detection module can be flexibly selected to achieve a more ideal use state. Flying point emission module and detection module can be easily connected and removed. Therefore, the portability and operational flexibility of the backscatter inspection system can be improved. At the same time, the applicable scenarios of the backscatter inspection system can also be expanded, and the imaging quality and inspection accuracy of the backscatter inspection system can be improved.
附图说明Description of drawings
图1是根据本发明的实施例的背散射检查系统的示意图。1 is a schematic diagram of a backscatter inspection system according to an embodiment of the present invention.
图2是根据本发明的实施例的紧固件连接的示意图。2 is a schematic diagram of a fastener connection according to an embodiment of the present invention.
图3是根据本发明的实施例的铰链连接的示意图。3 is a schematic diagram of a hinged connection according to an embodiment of the present invention.
图4是根据本发明的实施例的铰链连接的锁定结构的示意图。4 is a schematic diagram of a locking structure of a hinged connection according to an embodiment of the present invention.
图5是根据本发明的实施例的铰链连接的锁定结构的示意图。5 is a schematic diagram of a locking structure of a hinged connection according to an embodiment of the present invention.
图6是根据本发明的实施例的滑槽连接的示意图。6 is a schematic diagram of a chute connection according to an embodiment of the present invention.
图7是根据本发明的实施例的滑槽连接的截面示意图。7 is a schematic cross-sectional view of a chute connection according to an embodiment of the present invention.
图8是根据本发明的实施例的卡扣连接的示意图。8 is a schematic diagram of a snap-fit connection according to an embodiment of the present invention.
图9是根据本发明的实施例的磁性连接的示意图。9 is a schematic diagram of a magnetic connection according to an embodiment of the present invention.
图10是根据本发明的实施例的具有电气连接端子的背散射检查系统的示意图。10 is a schematic diagram of a backscatter inspection system with electrical connection terminals in accordance with an embodiment of the present invention.
图11是根据本发明的实施例的具有手柄的背散射检查系统的示意图。11 is a schematic diagram of a backscatter inspection system with a handle according to an embodiment of the present invention.
具体实施方式detailed description
下文中，参照附图描述本发明的实施例。下面的详细描述和附图用于示例性地说明本发明的原理，本发明不限于所描述的优选实施例，本发明的范围由权利要求书限定。现参考示例性的实施方式详细描述本发明，一些实施例图示在附图中。以下描述参考附图进行，除非另有表示，否则在不同附图中的相同附图标记代表相同或类似的元件。以下示例性实施方式中描述的方案不代表本发明的所有方案。相反，这些方案仅是所附权利要求中涉及的本发明的各个方面的系统和方法的示例。Hereinafter, embodiments of the present invention are described with reference to the accompanying drawings. The following detailed description and drawings serve to illustrate by way of example the principles of the invention, the invention is not limited to the preferred embodiments described, but the scope of the invention is defined by the claims. The present invention will now be described in detail with reference to exemplary embodiments, some of which are illustrated in the accompanying drawings. The following description is made with reference to the drawings, in which the same reference numbers in different drawings represent the same or similar elements unless otherwise indicated. The aspects described in the following exemplary embodiments do not represent all aspects of the present invention. Rather, these aspects are merely exemplary of the systems and methods of the various aspects of the invention recited in the appended claims.
通常，便携式背散射检查系统可以包括外壳、X射线源、笔束形成装置、两个探测器、控制器和显示器等。X射线源、笔束形成装置、探测器和控制器设置在外壳的内部。X射线源位于背散射检查系统的后部，探测器位于前部，笔束形成装置位于X射线源和探测器之间。X射线源用于生成X射线。笔束形成装置用于将X射线源生成的X射线调制成旋转的X射线笔束。探测器用于接收在经笔束形成装置调制的X射线笔束照射到待检查物体后，从待检查物体背散射的X射线。控制器用于根据探测器接收的 背散射X射线，生成背散射X射线图像。显示器用于显示控制器所生成的背散射X射线图像。In general, a portable backscatter inspection system may include a housing, an X-ray source, a pencil beam forming device, two detectors, a controller and a display, among others. The X-ray source, pencil beam forming device, detector and controller are arranged inside the housing. The X-ray source is located at the rear of the backscatter inspection system, the detector is located at the front, and the pencil beam forming device is located between the X-ray source and the detector. An X-ray source is used to generate X-rays. The pencil beam forming device is used to modulate the X-rays generated by the X-ray source into a rotating X-ray pencil beam. The detector is used for receiving X-rays backscattered from the object to be inspected after the X-ray pencil beam modulated by the pencil beam forming device irradiates the object to be inspected. The controller is configured to generate a backscattered X-ray image based on the backscattered X-ray received by the detector. The display is used to display the backscattered X-ray image generated by the controller.
在便携式背散射检查系统对待检查物体进行扫描检查时，X射线源发出X射线(例如大张角X射线)；笔束形成装置将X射线源发出的X射线调制成高速旋转的X射线笔束；X射线笔束穿过两个探测器之间的缝隙并最终照射在待检查物体上。笔束形成装置将笔束调制成其投影沿直线高速运动，由此对待检查物体进行一维扫描。在对待检查物体进行一维扫描时，操作人员手持背散射检查系统沿与一维扫描方向垂直的方向移动，使背散射检查系统扫描经过一定面积的范围，对待检查物体进行二维扫描。探测器可以在扫描过程中接收从待检查物体背散射的X射线并且生成背散射信号，控制器可以从探测器获取背散射信号并且生成X射线背散射图像，例如具有一定深度的二维图像。之后，显示器可以显示生成的X射线背散射图像。在扫描过程中，背散射检查系统的外表面贴合待检查物体的表面。When the portable backscatter inspection system scans and inspects the object to be inspected, the X-ray source emits X-rays (such as wide-angle X-rays); the pencil beam forming device modulates the X-rays emitted by the X-ray source into a high-speed rotating X-ray pencil beam ; The X-ray pencil beam passes through the gap between the two detectors and finally irradiates on the object to be inspected. The pencil beam forming device modulates the pencil beam so that its projection moves at a high speed along a straight line, thereby performing one-dimensional scanning of the object to be inspected. When performing one-dimensional scanning of the object to be inspected, the operator moves the backscatter inspection system in a direction perpendicular to the one-dimensional scanning direction, so that the backscatter inspection system scans through a certain area, and performs two-dimensional scanning of the object to be inspected. The detector may receive X-rays backscattered from the object to be inspected during the scanning process and generate backscatter signals, and the controller may acquire the backscatter signals from the detector and generate X-ray backscatter images, such as two-dimensional images with a certain depth. Afterwards, the display can display the resulting X-ray backscattered image. During the scanning process, the outer surface of the backscatter inspection system adheres to the surface of the object to be inspected.
由此可见，这种便携式背散射检查系统将X射线源、笔束形成装置和探测器等都集成在一个外壳中，因此只能提供固定的功能模式。It can be seen that this portable backscatter inspection system integrates the X-ray source, the pencil beam forming device and the detector in one housing, so it can only provide a fixed function mode.
根据本发明的实施例的背散射检查系统包括可拆分的飞点出射模块和探测模块，由此可以通过不同飞点出射模块和不同探测模块的自由组合来切换背散射检查系统的不同工作模式。根据本发明的实施例的背散射检查系统可以对物体，例如车辆、建筑物墙面、或其他需要对内部结构和内部物品安全性进行鉴别的物体，进行扫描检查。根据本发明的实施例的背散射检查系统特别适合作为便携式背散射检查系统。The backscatter inspection system according to the embodiment of the present invention includes a detachable flying spot emission module and a detection module, whereby different working modes of the backscatter inspection system can be switched through free combinations of different flying spot emission modules and different detection modules . The backscatter inspection system according to the embodiment of the present invention can perform scanning inspection on objects, such as vehicles, building walls, or other objects that need to be identified for the safety of internal structures and internal items. Backscatter inspection systems according to embodiments of the present invention are particularly suitable as portable backscatter inspection systems.
下面结合附图描述根据本发明的实施例的背散射检查系统的结构。图1是根据本发明的实施例的背散射检查系统的示意图。在示例性实施例中，如图1所示，背散射检查系统可以包括飞点出射模块1、探测模块2和显示器3。飞点出射模块1用于发出X射线笔束。探测模块2用于接收在从飞点出射模块1发出的X射线笔束照射到待检查物体后，从待检查物体背散射的X射线。显示器3用于根据探测模块2接收的背散射X射线，显示生成的背散射X射线图像。The structure of the backscatter inspection system according to the embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a schematic diagram of a backscatter inspection system according to an embodiment of the present invention. In an exemplary embodiment, as shown in FIG. 1 , the backscatter inspection system may include a flying spot emission module 1 , a detection module 2 and a display 3 . The flying spot emission module 1 is used to emit X-ray pencil beams. The detection module 2 is configured to receive X-rays backscattered from the object to be inspected after the X-ray pencil beam emitted from the flying-point emission module 1 is irradiated to the object to be inspected. The display 3 is used for displaying the generated backscattered X-ray image according to the backscattered X-ray received by the detection module 2 .
在示例性实施例中，如图1所示，飞点出射模块1可以包括外壳11、X射线源12、笔束形成装置13、控制器14和连接部15。X射线源12、笔束形成装置13和控制器14可以设置在外壳11的内部。连接部15连接到外壳11，用于与探测模块2的连接部(下文描述)进行连接。应当注意，为便于显示外壳11内的部件，图1以局部剖视的方式示出外壳11。In an exemplary embodiment, as shown in FIG. 1 , the flying spot extraction module 1 may include a housing 11 , an X-ray source 12 , a pencil beam forming device 13 , a controller 14 and a connection part 15 . The X-ray source 12 , the pencil beam forming device 13 and the controller 14 may be provided inside the housing 11 . The connection portion 15 is connected to the housing 11 for connection with a connection portion (described below) of the detection module 2 . It should be noted that Figure 1 shows the housing 11 in partial cross-section for ease of showing the components within the housing 11 .
X射线源12用于生成X射线。笔束形成装置13用于将X射线源12生成的X射线调制成旋转的X射线笔束。笔束形成装置13可以采用各种形式，例如盘式、轮式、柱式等旋转调制装置。飞点出射模块1的发出X射线笔束的一侧为出射侧。外壳11包括位于出射侧的狭缝16。经调制的X射线笔束从狭缝16射出飞点出射模块1。在背散射检查系统中，X射线源12位于背散射检查系统的后部，狭缝16位于前部，笔束形成装置13位于X射线源12和狭缝16之间。在本文中，“前部”和“前”表示背散射检查系统的朝向待检查物体的一侧，“后部”和“后”表示背散射检查系统的远离待检查物体的一侧。The X-ray source 12 is used to generate X-rays. The pencil beam forming device 13 is used to modulate the X-rays generated by the X-ray source 12 into a rotating X-ray pencil beam. The pencil beam forming device 13 may take various forms, such as a rotary modulation device such as a disc type, a wheel type, and a column type. The side that emits the X-ray pencil beam of the flying spot exit module 1 is the exit side. The housing 11 includes a slit 16 on the exit side. The modulated X-ray pencil beam exits the flying spot exit module 1 from the slit 16 . In the backscatter inspection system, the X-ray source 12 is located at the rear of the backscatter inspection system, the slit 16 is located at the front, and the pencil beam forming device 13 is located between the X-ray source 12 and the slit 16 . Herein, "front" and "front" refer to the side of the backscatter inspection system facing the object to be inspected, and "rear" and "rear" refer to the side of the backscatter inspection system that is remote from the object to be inspected.
控制器14用于根据探测模块2接收的背散射X射线，生成背散射X射线图像。控制器14可以如图1所示设置在外壳11的内部，例如设置在外壳11内远离笔束形成装置13的一侧，或者可以设置在外壳11的外部。控制器14与X射线源12、探测模块2和笔束形成装置13等通信连接，例如通过有线通信或无线通信。The controller 14 is configured to generate a backscattered X-ray image according to the backscattered X-ray received by the detection module 2 . The controller 14 may be disposed inside the casing 11 as shown in FIG. 1 , eg, disposed on the side of the casing 11 away from the pencil bundle forming device 13 , or may be disposed outside the casing 11 . The controller 14 is connected in communication with the X-ray source 12, the detection module 2, the pencil beam forming device 13, etc., for example, by wired communication or wireless communication.
根据本发明的某些实施例，飞点出射模块1的外壳11可以包括前面板17。狭缝16位于前面板17上。在一些实施例中，前面板17可以由具有X射线屏蔽作用的材料制成，从而可以降低在X射线笔束从狭缝16射出前在飞点出射模块1内部引起的散射对探测模块2的影响，特别是有效降低到达探测模块2的背面的散射。在一些实施例中，连接部15可以设置在前面板17上。According to some embodiments of the present invention, the housing 11 of the flying spot exit module 1 may include a front panel 17 . The slit 16 is located on the front panel 17 . In some embodiments, the front panel 17 may be made of a material with an X-ray shielding effect, so that the scattering caused inside the flying spot exit module 1 before the X-ray pencil beam exits the slit 16 may be reduced to the detection module 2 In particular, the scattering reaching the back of the detection module 2 is effectively reduced. In some embodiments, the connection portion 15 may be provided on the front panel 17 .
在一些实施例中，飞点出射模块1还可以包括滤片。滤片安装在狭缝16处，例如安装在前面板17上的狭缝16处。滤片可以在X射线笔束从飞点出射模块1射出前改变X射线能谱。由此，可以提高X射线能谱的有效能量，提高背散射检查系统的性能，例如穿透、分辨等性能。滤片可以具 有不同的材料和/或不同的厚度。In some embodiments, the flying spot emission module 1 may further include a filter. The filter is mounted at the slot 16 , for example at the slot 16 on the front panel 17 . The filter can change the X-ray energy spectrum before the X-ray pencil beam is emitted from the flying spot exit module 1 . Thereby, the effective energy of the X-ray energy spectrum can be increased, and the performance of the backscatter inspection system, such as penetration and resolution, can be improved. The filters can be of different materials and/or different thicknesses.
在示例性实施例中，如图1所示，探测模块2可以包括外壳21、两个探测器22和连接部23。探测器22设置在外壳21中。两个探测器22间隔开布置，从而在两个探测器22之间形成狭缝24。缝隙24用于使从飞点出射模块1发出的X射线笔束穿过并且到达待检查物体的表面。探测模块2包括入射侧和接收侧。探测模块2的入射侧为飞点出射模块1发出的X射线笔束进入探测模块2的一侧，探测模块2的接收侧为用于朝向待检查物体以接收背散射X射线的一侧。狭缝24贯穿探测模块2的入射侧和接收侧。连接部23连接到外壳21，用于与飞点出射模块1的连接部15进行连接。在一些实施例中，如图1所示，连接部23设置在探测模块2的入射侧。In an exemplary embodiment, as shown in FIG. 1 , the detection module 2 may include a housing 21 , two detectors 22 and a connection part 23 . The detector 22 is provided in the housing 21 . The two detectors 22 are spaced apart such that a slit 24 is formed between the two detectors 22 . The slit 24 is used for the X-ray pencil beam emitted from the flying spot extraction module 1 to pass through and reach the surface of the object to be inspected. The detection module 2 includes an incident side and a receiving side. The incident side of the detection module 2 is the side where the X-ray pencil beam emitted by the flying point exit module 1 enters the detection module 2, and the receiving side of the detection module 2 is the side facing the object to be inspected to receive backscattered X-rays. The slit 24 penetrates the incident side and the receiving side of the detection module 2 . The connection part 23 is connected to the housing 21 for connection with the connection part 15 of the flying point ejection module 1 . In some embodiments, as shown in FIG. 1 , the connecting portion 23 is provided on the incident side of the detection module 2 .
根据本发明的实施例，飞点出射模块1和探测模块2可以通过各自的连接部15和23可拆卸地彼此连接。当飞点出射模块1和探测模块2彼此连接时，飞点出射模块1的狭缝16与探测模块2的两个探测器22之间的狭缝24对准，即两个狭缝16和24形成相互连通的X射线通路。由此，从飞点出射模块1发出的X射线笔束能够连续穿过狭缝16和狭缝24并且从探测模块2的接收侧射出，最终到达待检查物体的表面。According to the embodiment of the present invention, the flying spot emission module 1 and the detection module 2 may be detachably connected to each other through the respective connection parts 15 and 23 . When the flying spot extraction module 1 and the detection module 2 are connected to each other, the slit 16 of the flying spot extraction module 1 is aligned with the slit 24 between the two detectors 22 of the detection module 2, namely the two slits 16 and 24 Form interconnected X-ray paths. Thereby, the X-ray pencil beam emitted from the flying spot emission module 1 can continuously pass through the slit 16 and the slit 24 and be emitted from the receiving side of the detection module 2, and finally reach the surface of the object to be inspected.
飞点出射模块1和探测模块2的连接部15和23可以采用各种方式实现飞点出射模块1和探测模块2的可拆卸连接。根据本发明的某些实施例，连接部15和23可以采用下列连接方式中的任一项：紧固件连接、铰链连接、滑槽连接、卡扣连接或磁性连接等。The connecting parts 15 and 23 of the flying-spot extraction module 1 and the detection module 2 can be detachably connected to the flying-spot extraction module 1 and the detection module 2 in various ways. According to some embodiments of the present invention, the connection parts 15 and 23 may adopt any one of the following connection methods: fastener connection, hinge connection, sliding groove connection, snap connection or magnetic connection, and the like.
在根据本发明的实施例的背散射检查系统中，显示器3用于显示控制器14所生成的背散射X射线图像。显示器3与控制器14通信连接，例如通过有线通信或无线通信。在一些实施例中，显示器3可以设置在外壳11的外部，例如如图1所示与外壳11分开设置，或者显示器3可以连接到外壳11上，例如可拆卸地连接。In the backscatter inspection system according to the embodiment of the present invention, the display 3 is used to display the backscatter X-ray image generated by the controller 14 . The display 3 is communicatively connected to the controller 14, for example by wired or wireless communication. In some embodiments, the display 3 may be disposed outside the housing 11 , eg, separate from the housing 11 as shown in FIG. 1 , or the display 3 may be attached to the housing 11 , eg detachably.
下面参考附图描述飞点出射模块1和探测模块2之间的连接方式。The connection between the flying spot emission module 1 and the detection module 2 will be described below with reference to the accompanying drawings.
图2是根据本发明的实施例的紧固件连接的示意图。根据本发明的某些实施例，如图2所示，飞点出射模块1和探测模块2可以通过螺栓51和 螺纹孔52等实现可拆卸的紧固件连接。在一些实施例中，飞点出射模块1和探测模块2可以完全通过紧固件连接固定。在一些实施例中，飞点出射模块1和探测模块2还可以先通过局部滑槽、卡槽等进行定位，然后再通过紧固件连接固定。2 is a schematic diagram of a fastener connection according to an embodiment of the present invention. According to some embodiments of the present invention, as shown in FIG. 2 , the flying spot emission module 1 and the detection module 2 can be connected by bolts 51 and threaded holes 52 and so on to achieve detachable fastener connection. In some embodiments, the flying spot emission module 1 and the detection module 2 can be completely connected and fixed by fasteners. In some embodiments, the flying point ejection module 1 and the detection module 2 can also be positioned first through a partial chute, a card slot, etc., and then connected and fixed through fasteners.
图3是根据本发明的实施例的铰链连接的示意图。根据本发明的某些实施例，如图3所示，飞点出射模块1和探测模块2可以通过铰轴53和卡接部54实现可拆卸的铰链连接。铰轴53可以固定在飞点出射模块1和探测模块2中的一者上，卡接部54可以固定在另一者上。通过将卡接部54可拆卸地安装到铰轴53上，飞点出射模块1和探测模块2可以通过铰轴53相对转动以实现各自狭缝的对准。在采用铰链连接的情况下，背散射检查系统还可以通过各种锁定结构55实现飞点出射模块1和探测模块2之间的固定。锁定结构55可以设置在飞点出射模块1和探测模块2之间的相对表面上远离铰轴53和卡接部54的一侧。图4是根据本发明的一个实施例的铰链连接的锁定结构的示意图。如图4所示，锁定结构可以采用碰珠式锁扣55A。图5是根据本发明的另一实施例的铰链连接的锁定结构的示意图。如图4所示，锁定结构可以采用带弹簧弹珠55B的锁定销55C。3 is a schematic diagram of a hinged connection according to an embodiment of the present invention. According to some embodiments of the present invention, as shown in FIG. 3 , the flying spot emission module 1 and the detection module 2 can be detachably connected by a hinge through the hinge shaft 53 and the clamping portion 54 . The hinge shaft 53 can be fixed on one of the flying spot emission module 1 and the detection module 2, and the clamping part 54 can be fixed on the other. By detachably installing the snap portion 54 on the hinge shaft 53 , the flying-point shooting module 1 and the detection module 2 can be rotated relative to each other through the hinge shaft 53 to achieve alignment of the respective slits. In the case of adopting hinge connection, the backscatter inspection system can also realize the fixing between the flying spot emission module 1 and the detection module 2 through various locking structures 55 . The locking structure 55 may be disposed on a side away from the hinge shaft 53 and the clamping portion 54 on the opposite surface between the flying-point emission module 1 and the detection module 2 . 4 is a schematic diagram of a locking structure of a hinged connection according to an embodiment of the present invention. As shown in FIG. 4 , the locking structure can adopt a ball-type lock 55A. 5 is a schematic diagram of a locking structure of a hinge connection according to another embodiment of the present invention. As shown in FIG. 4, the locking structure may employ a locking pin 55C with a spring ball 55B.
图6是根据本发明的实施例的滑槽连接的示意图。根据本发明的某些实施例，如图6所示，飞点出射模块1和探测模块2可以通过滑槽56和凸出的滑块57实现可拆卸的滑槽连接。飞点出射模块1和探测模块2中的一者可以包括滑槽56，另一者可以包括滑块57。通过将滑块57插入到滑槽56中可以实现飞点出射模块1和探测模块2之间的可拆卸连接。滑槽56和滑块57可以采用直滑槽和直滑块，或者，如图7所示，滑槽56和滑块57可以采用斜楔滑槽和斜楔滑块。6 is a schematic diagram of a chute connection according to an embodiment of the present invention. According to some embodiments of the present invention, as shown in FIG. 6 , the flying spot ejection module 1 and the detection module 2 can be detachably connected by the chute through the chute 56 and the protruding slider 57 . One of the flying spot ejection module 1 and the detection module 2 may include a chute 56 , and the other may include a slider 57 . The detachable connection between the flying spot emission module 1 and the detection module 2 can be achieved by inserting the slider 57 into the sliding slot 56 . The chute 56 and the sliding block 57 can be straight chute and straight sliding block, or, as shown in FIG.
图8是根据本发明的实施例的卡扣连接的示意图。根据本发明的某些实施例，如图8所示，飞点出射模块1和探测模块2可以通过卡扣头58和卡扣槽59实现可拆卸的卡扣连接。飞点出射模块1和探测模块2中的一者可以包括卡扣头58，另一者可以包括卡扣槽59。卡扣头58可以通过弹性变形被卡在卡扣槽59中和从卡扣槽59中脱出，从而实现飞点出射模块1和探测模块2之间的可拆卸连接。8 is a schematic diagram of a snap-fit connection according to an embodiment of the present invention. According to some embodiments of the present invention, as shown in FIG. 8 , the flying spot ejection module 1 and the detection module 2 can be detachably connected by a snap head 58 and a snap slot 59 . One of the flying spot ejection module 1 and the detection module 2 may include a snap head 58 , and the other may include a snap slot 59 . The snap head 58 can be stuck in the snap slot 59 and released from the snap slot 59 through elastic deformation, so as to realize the detachable connection between the flying spot shooting module 1 and the detection module 2 .
图9是根据本发明的实施例的磁性连接的示意图。根据本发明的某些实施例，如图9所示，飞点出射模块1和探测模块2可以通过磁性体61实现可拆卸的磁性体连接。磁性体61可以相对应地分别设置在飞点出射模块1和探测模块2。通过飞点出射模块1和探测模块2上不同磁性体61之间的磁性吸引，可以实现飞点出射模块1和探测模块2之间的可拆卸连接。在一些实施例中，还可以在飞点出射模块1和探测模块2上设置相应的定位结构(例如凸台和凹槽、轴与孔等)，以提高飞点出射模块1和探测模块2之间的连接便利性和准确性。9 is a schematic diagram of a magnetic connection according to an embodiment of the present invention. According to some embodiments of the present invention, as shown in FIG. 9 , the flying spot emission module 1 and the detection module 2 can be detachably connected by a magnetic body 61 . The magnetic bodies 61 may be correspondingly disposed on the flying spot emission module 1 and the detection module 2 respectively. Through the magnetic attraction between different magnetic bodies 61 on the flying spot emission module 1 and the detection module 2, the detachable connection between the flying spot emission module 1 and the detection module 2 can be realized. In some embodiments, corresponding positioning structures (such as bosses and grooves, shafts and holes, etc.) may also be provided on the flying spot extraction module 1 and the detection module 2 to improve the distance between the flying spot extraction module 1 and the detection module 2 Connectivity and accuracy.
上文描述了飞点出射模块1和探测模块2的可拆卸连接的某些实施方式。但是，本发明不限于此。应当理解，根据本发明的教导，本领域技术人员还可以采用其他可拆卸的连接方式来实施飞点出射模块1和探测模块2的连接部。Some embodiments of the detachable connection of the flying spot emission module 1 and the detection module 2 are described above. However, the present invention is not limited to this. It should be understood that, according to the teachings of the present invention, those skilled in the art can also adopt other detachable connection manners to implement the connection portion between the flying spot emission module 1 and the detection module 2 .
根据本发明的某些实施例，飞点出射模块1和探测模块2还可以实现通信连接和/或电连接。图10是根据本发明的实施例的具有电气连接端子的背散射检查系统的示意图。在一些实施例中，如图10所示，飞点出射模块1可以包括设置在外壳11上的电气连接端子18，探测模块2可以包括设置在外壳21上的电气连接端子25。电气连接端子18和25可以彼此对应地设置在飞点出射模块1和探测模块2上。由此，在飞点出射模块1和探测模块2通过各自的连接部可拆卸地彼此连接时，电气连接端子18和25可以相互接合，从而实现飞点出射模块1和探测模块2之间的通信连接和/或电连接。在一些实施例中，飞点出射模块1和探测模块2还可以采用无线通信连接。例如，飞点出射模块1和探测模块2可以通过WIFI、NFC、蓝牙等进行无线通信连接。在飞点出射模块1和探测模块2之间建立通信连接时，探测模块2通过接收背散射X射线而采集的X射线信号，可以传输到飞点出射模块1的控制器14以生成背散射图像。According to some embodiments of the present invention, the flying spot emission module 1 and the detection module 2 may also implement communication connection and/or electrical connection. 10 is a schematic diagram of a backscatter inspection system with electrical connection terminals in accordance with an embodiment of the present invention. In some embodiments, as shown in FIG. 10 , the flying spot emission module 1 may include electrical connection terminals 18 provided on the housing 11 , and the detection module 2 may include electrical connection terminals 25 provided on the housing 21 . The electrical connection terminals 18 and 25 may be provided on the flying spot emission module 1 and the detection module 2 corresponding to each other. Thus, when the flying spot emission module 1 and the detection module 2 are detachably connected to each other through the respective connection parts, the electrical connection terminals 18 and 25 can be engaged with each other, thereby realizing the communication between the flying spot emission module 1 and the detection module 2 connection and/or electrical connection. In some embodiments, the flying spot emission module 1 and the detection module 2 may also be connected by wireless communication. For example, the flying spot emission module 1 and the detection module 2 can be connected by wireless communication through WIFI, NFC, Bluetooth, and the like. When a communication connection is established between the flying spot emission module 1 and the detection module 2, the X-ray signals collected by the detection module 2 by receiving the backscattered X-rays can be transmitted to the controller 14 of the flying spot emission module 1 to generate a backscattered image .
根据本发明的某些实施例，如图1所示，探测模块2还可以包括前置放大器26，用于对探测器22接收的X射线信号进行成形放大。According to some embodiments of the present invention, as shown in FIG. 1 , the detection module 2 may further include a preamplifier 26 for shaping and amplifying the X-ray signal received by the detector 22 .
图11是根据本发明的实施例的具有手柄的背散射检查系统的示意图。根据本发明的某些实施例，背散射检查系统还可以包括手柄5，用于手持 操作。手柄5可以设置在飞点出射模块1的外壳11或探测模块2的外壳21上。在一些实施例中，手柄5在背散射检查系统上的位置是可调节的。根据不同的飞点出射模块1和探测模块2的组合，安装好的背散射检查系统的重心可能会有不同。这种情况下，可以根据背散射检查系统的重心来调整手柄15的位置，以提高操作人员在手持背散射检查系统进行扫描检查的过程中的舒适感和稳定度。11 is a schematic diagram of a backscatter inspection system with a handle according to an embodiment of the present invention. According to some embodiments of the present invention, the backscatter inspection system may further comprise a handle 5 for hand-held operation. The handle 5 can be disposed on the housing 11 of the flying spot emission module 1 or the housing 21 of the detection module 2 . In some embodiments, the position of the handle 5 on the backscatter inspection system is adjustable. Depending on the combination of the flying spot emission module 1 and the detection module 2, the center of gravity of the installed backscatter inspection system may be different. In this case, the position of the handle 15 can be adjusted according to the center of gravity of the backscatter inspection system, so as to improve the comfort and stability of the operator in the process of holding the backscatter inspection system for scanning inspection.
根据本发明的某些实施例，背散射检查系统可以包括多个飞点出射模块1和/或多个探测模块2。不同的飞点出射模块1可以提供不同的功能。对于不同的使用场景，可以选择不同的飞点出射模块1。不同的飞点出射模块1可以具有不同的X射线能量、电流、飞点扫描张角等。具有低功率X射线源的飞点出射模块1可以提供更好的便携性，方便单人操作。具有高功率X射线源的飞点出射模块1可以达到更好的穿透、分辨等性能，但是便携性较差，可以使用机械臂等辅助操作。According to some embodiments of the present invention, the backscatter inspection system may include a plurality of flying spot emission modules 1 and/or a plurality of detection modules 2 . Different flying spot ejection modules 1 can provide different functions. For different usage scenarios, different flying point ejection modules 1 can be selected. Different flying-spot emission modules 1 may have different X-ray energy, current, flying-spot scanning opening angle, and the like. The flying spot emission module 1 with a low-power X-ray source can provide better portability and facilitate single-person operation. The flying spot emission module 1 with a high-power X-ray source can achieve better penetration, resolution and other performances, but has poor portability, and can be operated with assistance such as a robotic arm.
对应不同的飞点出射模块1，可以有多种不同的探测模块2。不同的探测模块2也可以提供不同的功能。低能探测模块2对低能X射线的效率更高，而高能探测模块2对高能X射线的效率更高。大尺寸的探测模块2对散射射线的空间覆盖性更好，而小尺寸的探测模块2可以在更狭小的空间使用。Corresponding to different flying spot emission modules 1 , there can be a variety of different detection modules 2 . Different detection modules 2 can also provide different functions. The low-energy detection module 2 is more efficient for low-energy X-rays, while the high-energy detection module 2 is more efficient for high-energy X-rays. The large-sized detection module 2 has better spatial coverage for scattered rays, while the small-sized detection module 2 can be used in a narrower space.
根据本发明的实施例，不同的飞点出射模块1和不同的探测模块2可以都使用相同连接方式，便于相互切换和匹配。控制器14可以内置若干典型功能模式，并且可以根据选择的飞点出射模块1和探测模块2、待检查物体的类型等，提供适合的功能模式，例如包括X射线能量、探测器增益等。According to the embodiment of the present invention, different flying spot emission modules 1 and different detection modules 2 may all use the same connection mode, which is convenient for mutual switching and matching. The controller 14 can have several built-in typical functional modes, and can provide suitable functional modes according to the selected flying spot emission module 1 and detection module 2, the type of the object to be inspected, etc., for example, including X-ray energy, detector gain, etc.
本发明的实施例还提供使用上述背散射检查系统的背散射检查方法，其中背散射检查系统包括多个飞点出射模块1和多个探测模块2。该背散射检查方法可以包括如下步骤：根据飞点出射需求(例如，所需的便携性、穿透性能、分辨性能、待检查物体的材质等)，选择一个飞点出射模块1；根据探测需求(例如，所需的空间覆盖、待检查物体的尺寸等)和选择的飞点出射模块1，选择一个探测模块2；将选择的飞点出射模块1和 探测模块2可拆卸地彼此连接；并且使用连接后的飞点出射模块1和探测模块2进行扫描检查。在一些实施例中，在进行扫描检查前，该背散射检查方法还可以根据扫描需求(例如，待检查物体的类型等)，设定适合的功能模式。Embodiments of the present invention also provide a backscatter inspection method using the above-mentioned backscatter inspection system, wherein the backscatter inspection system includes a plurality of flying spot emission modules 1 and a plurality of detection modules 2 . The backscatter inspection method may include the following steps: selecting a flying spot emission module 1 according to the flying spot emission requirements (for example, required portability, penetration performance, resolution performance, the material of the object to be inspected, etc.); according to the detection requirements (for example, the required space coverage, the size of the object to be inspected, etc.) and the selected flying spot extraction module 1, and one detection module 2 is selected; the selected flying spot extraction module 1 and the detection module 2 are detachably connected to each other; and Use the connected flying spot emission module 1 and detection module 2 for scanning inspection. In some embodiments, before performing the scanning inspection, the backscatter inspection method may further set a suitable functional mode according to scanning requirements (eg, the type of the object to be inspected, etc.).
根据本发明的实施例，背散射检查系统可以包括可拆分的飞点出射模块和探测模块。不同的飞点出射模块和探测模块可以满足不同的需求，适应于不同的使用场景。根据不同的需求，可以灵活地选择飞点出射模块和探测模块的组合，以实现更理想的使用状态。飞点出射模块和探测模块可以方便地连接和拆卸。因此，可以提高背散射检查系统的便携性和操作灵活性。同时，还可以扩展背散射检查系统的可应用场景，提高背散射检查系统的成像质量和检查准确性。According to an embodiment of the present invention, a backscatter inspection system may include a detachable flying spot exit module and a detection module. Different flying point emission modules and detection modules can meet different needs and adapt to different usage scenarios. According to different needs, the combination of the flying spot emission module and the detection module can be flexibly selected to achieve a more ideal use state. Flying point emission module and detection module can be easily connected and removed. Therefore, the portability and operational flexibility of the backscatter inspection system can be improved. At the same time, the applicable scenarios of the backscatter inspection system can also be expanded, and the imaging quality and inspection accuracy of the backscatter inspection system can be improved.
尽管已经参考示例性实施例描述了本发明，但是应理解，本发明并不限于上述实施例的构造和方法。相反，本发明意在覆盖各种修改例和等同配置。另外，尽管在各种示例性结合体和构造中示出了所公开发明的各种元件和方法步骤，但是包括更多、更少的元件或方法的其它组合也落在本发明的范围之内。While the present invention has been described with reference to exemplary embodiments, it is to be understood that the present invention is not limited to the construction and method of the above-described embodiments. To the contrary, the invention is intended to cover various modifications and equivalent arrangements. In addition, while the various elements and method steps of the disclosed invention are shown in various exemplary combinations and configurations, other combinations, including more or less elements or methods, are also within the scope of the invention .

Claims (10)

  1. 一种背散射检查系统，包括：A backscatter inspection system comprising:
    一个或多个飞点出射模块，用于发出X射线笔束，所述飞点出射模块具有出射侧并且包括第一外壳和第一连接部，所述第一连接部连接到所述第一外壳，所述第一外壳包括位于所述出射侧的第一狭缝，所述飞点出射模块发出的X射线笔束从所述第一狭缝射出；和One or more flying-spot extraction modules for emitting X-ray pencil beams, the flying-spot extraction modules have an exit side and include a first housing and a first connecting portion connected to the first housing , the first housing includes a first slit on the exit side, and the X-ray pencil beam emitted by the flying spot exit module exits from the first slit; and
    一个或多个探测模块，用于接收从待检查物体背散射的X射线，所述探测模块具有入射侧和接收侧并且包括第二外壳、设置在所述第二外壳中的两个探测器和第二连接部，所述两个探测器间隔开布置以形成第二狭缝，所述第二狭缝贯穿所述入射侧和所述接收侧，所述第二连接部连接到所述第二外壳，One or more detection modules for receiving X-rays backscattered from the object to be inspected, the detection modules having an incident side and a receiving side and comprising a second housing, two detectors disposed in the second housing and A second connecting portion, the two detectors are spaced apart to form a second slit, the second slit penetrating the incident side and the receiving side, the second connecting portion is connected to the second shell,
    其中，所述飞点出射模块和所述探测模块构造成能够通过所述第一连接部和所述第二连接部可拆卸地彼此连接，Wherein, the flying spot emission module and the detection module are configured to be detachably connected to each other through the first connection portion and the second connection portion,
    其中，所述飞点出射模块和所述探测模块构造成当所述飞点出射模块和所述探测模块彼此连接时，所述飞点出射模块的所述第一狭缝与所述探测模块的所述两个探测器之间的所述第二狭缝对准，以使得从所述飞点出射模块发出的X射线笔束能够连续穿过所述第一狭缝和所述第二狭缝并且从所述探测模块的所述接收侧射出。Wherein, the flying spot emission module and the detection module are configured such that when the flying spot emission module and the detection module are connected to each other, the first slit of the flying spot emission module and the detection module are connected to each other. The second slit between the two detectors is aligned so that the X-ray pencil beam emitted from the flying spot exit module can continuously pass through the first slit and the second slit and emitted from the receiving side of the detection module.
  2. 根据权利要求1所述的背散射检查系统，其中，所述第一连接部和所述第二连接部采用下列连接方式中的任一项：The backscatter inspection system according to claim 1, wherein the first connection part and the second connection part adopt any one of the following connection methods:
    紧固件连接；Fastener connection;
    铰链连接；hinged connection;
    滑槽连接；Chute connection;
    卡扣连接；或snap connection; or
    磁性连接。Magnetic connection.
  3. 根据权利要求2所述的背散射检查系统，其中，所述飞点出射模块的所述第一外壳包括前面板，其中所述第一狭缝设置在所述前面板上。The backscatter inspection system of claim 2, wherein the first housing of the flying spot exit module includes a front panel, wherein the first slit is disposed on the front panel.
  4. 根据权利要求3所述的背散射检查系统，其中，所述飞点出射模块 还包括安装在所述前面板的所述第一狭缝处的滤片，用于在X射线笔束从所述飞点出射模块射出前改变X射线能谱。4. The backscatter inspection system of claim 3, wherein the flying spot exit module further comprises a filter installed at the first slit of the front panel for use in an X-ray pencil beam from the Change the X-ray energy spectrum before ejecting from the flying spot extraction module.
  5. 根据权利要求1至4中任一项所述的背散射检查系统，其中，所述飞点出射模块还包括设置在所述第一外壳上的第一电气连接端子，所述探测模块还包括设置在所述第二外壳上的第二电气连接端子，其中，所述飞点出射模块和所述探测模块构造成当所述飞点出射模块和所述探测模块彼此连接时，所述第一电气连接端子和所述第二电气连接端子彼此接合以实现所述飞点出射模块和所述探测模块之间的电连接和/或通信连接；或者The backscatter inspection system according to any one of claims 1 to 4, wherein the flying spot emission module further comprises a first electrical connection terminal provided on the first housing, and the detection module further comprises a a second electrical connection terminal on the second housing, wherein the flying spot exit module and the detection module are configured such that when the flying spot exit module and the detection module are connected to each other, the first electrical The connection terminal and the second electrical connection terminal are engaged with each other to realize the electrical connection and/or communication connection between the flying spot emission module and the detection module; or
    所述飞点出射模块和所述探测模块构造成通过无线通信彼此通信。The flying spot emission module and the detection module are configured to communicate with each other through wireless communication.
  6. 根据权利要求5所述的背散射检查系统，还包括手柄，以便于所述背散射检查系统被手持操作，其中，所述手柄设置在所述第一外壳或所述第二外壳上，并且所述手柄在所述第一外壳或所述第二外壳上的位置是可调节的。The backscatter inspection system of claim 5, further comprising a handle so that the backscatter inspection system can be handled by hand, wherein the handle is provided on the first housing or the second housing, and the handle is The position of the handle on the first housing or the second housing is adjustable.
  7. 根据权利要求6所述的背散射检查系统，其中，所述飞点出射模块包括控制器，用于根据所述探测器接收的背散射X射线，生成背散射X射线图像。The backscatter inspection system according to claim 6, wherein the flying spot exit module includes a controller for generating a backscattered X-ray image according to the backscattered X-ray received by the detector.
  8. 根据权利要求7所述的背散射检查系统，还包括显示器，用于显示所述控制器所生成的背散射X射线图像，其中所述显示器连接到所述第一外壳和/或与所述第一外壳分开设置。The backscatter inspection system of claim 7, further comprising a display for displaying the backscatter X-ray image generated by the controller, wherein the display is connected to the first housing and/or to the first housing A housing is provided separately.
  9. 根据权利要求6至8中任一项所述的背散射检查系统，其中，所述飞点出射模块还包括设置在所述第一外壳中的X射线源和笔束形成装置，其中所述X射线源用于生成X射线，所述笔束形成装置用于将所述X射线源生成的X射线调制成旋转的X射线笔束。The backscatter inspection system according to any one of claims 6 to 8, wherein the flying spot exit module further comprises an X-ray source and a pencil beam forming device disposed in the first housing, wherein the X-ray source The ray source is used for generating X-rays, and the pencil beam forming device is used for modulating the X-rays generated by the X-ray source into a rotating X-ray pencil beam.
  10. 一种背散射检查方法，包括：A backscatter inspection method comprising:
    提供根据权利要求1至9中任一项所述的背散射检查系统，所述背散射检查系统包括多个飞点出射模块和多个探测模块；providing the backscatter inspection system according to any one of claims 1 to 9, the backscatter inspection system comprising a plurality of flying spot emission modules and a plurality of detection modules;
    根据飞点出射需求选择所述多个飞点出射模块中的一者；Selecting one of the multiple flying spot ejection modules according to the flying spot ejection requirement;
    根据探测需求和选择的飞点出射模块，选择所述多个探测模块中的一者；Selecting one of the multiple detection modules according to detection requirements and the selected flying point exit module;
    将选择的飞点出射模块和选择的探测模块可拆卸地连接；Removably connect the selected flying spot emission module and the selected detection module;
    使用连接的飞点出射模块和探测模块进行扫描检查。Scanning checks are performed using the attached flying spot ejection module and detection module.
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