WO2019214324A1 - Système d'inspection de sécurité - Google Patents

Système d'inspection de sécurité Download PDF

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Publication number
WO2019214324A1
WO2019214324A1 PCT/CN2019/076609 CN2019076609W WO2019214324A1 WO 2019214324 A1 WO2019214324 A1 WO 2019214324A1 CN 2019076609 W CN2019076609 W CN 2019076609W WO 2019214324 A1 WO2019214324 A1 WO 2019214324A1
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WO
WIPO (PCT)
Prior art keywords
backscatter
inspection system
support
height
disposed
Prior art date
Application number
PCT/CN2019/076609
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English (en)
Chinese (zh)
Inventor
于昊
李营
王伟珍
宋全伟
王东宇
迟豪杰
李荐民
李玉兰
宗春光
陈志强
李元景
张丽
Original Assignee
清华大学
同方威视技术股份有限公司
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Publication date
Application filed by 清华大学, 同方威视技术股份有限公司 filed Critical 清华大学
Publication of WO2019214324A1 publication Critical patent/WO2019214324A1/fr
Priority to PL435899A priority Critical patent/PL435899A1/pl

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    • G01V5/222—
    • 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
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • 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
    • G01N23/20025—Sample holders or supports therefor
    • 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
    • G01N23/20066—Measuring inelastic scatter of gamma rays, e.g. Compton effect
    • 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
    • G01N23/20083—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 by using a combination of at least two measurements at least one being a transmission measurement and one a scatter measurement

Definitions

  • the present disclosure relates to the field of security inspection technology, and in particular to a security inspection system.
  • the safety inspection system is a device that scans and inspects objects such as vehicles, containers, and airplanes at customs and airports to obtain images.
  • security inspection systems can be divided into two categories: transmission imaging and backscatter imaging.
  • backscatter imaging technology uses the Compton scattering effect to image photons reflected by the scanned object.
  • the scatter image is formed by a ray signal scattered by an object of a certain depth in the direction of the detector. Since the Compton scattering of rays in low atomic number substances such as explosives and drugs is stronger, backscatter imaging technology can distinguish materials and highlight organic substances, which have low radiation dose, sensitivity to light materials, and images. Intuitive and other advantages.
  • one technical problem to be solved by the present disclosure is to improve the imaging quality of the backscattered image.
  • the present disclosure provides a security inspection system including a backscatter scanning device and a support device that form an inspection channel that allows a test object to pass through, the backscatter scanning device being disposed at an upper portion of the support device and including The backscattered ray source device and the backscatter detecting device, and the supporting device adjusts the height of the backscatter scanning device.
  • the support device includes two support arms on opposite sides of the inspection channel, the backscatter scanning device is coupled between the two support arms and located at an upper portion of the two support arms, both of which are height-adjustable Ground to adjust the height of the backscatter scanning device.
  • the support arm includes at least two arm sections arranged in a vertical direction, at least two of which are relatively telescopically sleeved, and the backscatter scanning device is coupled to the upper one of the at least two arm sections .
  • the backscatter scanning device further includes a backscattering capsule, the backscattered ray source device and the backscatter detecting device are both disposed inside the backscattering capsule, and the backscattering capsule is coupled between the two support arms and located in two The upper support arm of the support arm.
  • the security inspection system further includes a height detecting device for measuring the height of the object before the object passes through the bottom of the backscatter scanning device, and the supporting device adjusts the back according to the detection result of the height detecting device.
  • the height of the scattering scanning device is not limited to the above range.
  • the security inspection system further includes a transmissive scanning device having a transmissive ray source device and a transmissive ray source device disposed at a side of the support device.
  • the transmissive ray source device is disposed on one side of the support device
  • the transmissive detection device includes a first transmissive detecting device and a second transmissive detecting device, wherein: the first transmissive detecting device is disposed at the supporting device and the transmissive ray source The opposite side of the device; the second transmission detecting means is disposed at an upper portion of the supporting device and is arranged offset from the backscatter scanning device in the extending direction of the inspection passage.
  • the second transmission detecting device changes height with the backscatter scanning device under the adjustment of the supporting device.
  • the support device further includes a transmissive chamber disposed at a side of one of the two support arms on opposite sides of the inspection channel, the transmissive source device disposed in the transmissive chamber, and the support device further Included in the vertical mounting bracket, the vertical mounting bracket and the other of the two supporting arms on opposite sides of the inspection passage are staggered along the extending direction of the inspection passage, and the first transmission detecting device is disposed on the vertical mounting bracket; And, the supporting device further comprises a lateral mounting bracket disposed between the two supporting arms on opposite sides of the inspection passage and located at an upper portion of the two supporting arms, and the second transmission detecting device is disposed between the lateral mounting brackets.
  • the support device includes a vertical mount and a lateral mount, the lateral mount and the vertical mount being coplanar.
  • the security inspection system further includes a walking wheel disposed at the bottom of the support device.
  • the support device of the security inspection system can adjust the height of the backscatter scanning device mounted on the support device, because it is convenient to adjust the backscattered spot spot projection size and sheet according to the height of the object during scanning.
  • the angular size therefore, can effectively improve the imaging quality of the backscattered image.
  • Fig. 1 is a schematic perspective view showing a three-dimensional structure of a security inspection system of a first embodiment of the present disclosure.
  • FIG. 2 is a block diagram showing the structure of the backscatter scanning device of FIG. 1.
  • Fig. 3 is a schematic view showing the structure of the backscattering device of Fig. 1 when it is adjusted to a lower height by the supporting means.
  • Figure 4 is a schematic diagram showing the principle of the support device adjusting the backscatter scanning device height to affect the imaging quality of the backscatter device.
  • Fig. 5 is a schematic perspective view showing a three-dimensional structure of a security inspection system of a second embodiment of the present disclosure.
  • Fig. 6 is a schematic view showing the structure of the backscattering device of Fig. 5 when it is adjusted to a lower height by the supporting device.
  • orientation words such as “front, back, up, down, left, right", “horizontal, vertical, vertical, horizontal” and “top, bottom”, etc. indicate the orientation.
  • positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the disclosure and the simplification of the description, which does not indicate or imply the indicated device or component. It must be constructed and operated in a specific orientation or in a specific orientation, and thus is not to be construed as limiting the scope of the disclosure; the orientations “inside and outside” refer to the inside and outside of the contour of the components themselves.
  • Figures 1-6 illustrate two embodiments of the security inspection system of the present disclosure.
  • the security inspection system provided by the present disclosure includes a backscatter scanning device 1 and a support device 2, the support device 2 forming an inspection channel that allows the object a to pass, and the backscatter scanning device 1 is disposed on the support device 2
  • the upper portion includes the backscattered ray source device 11 and the backscatter detecting device 12, and the supporting device 2 adjusts the height of the backscatter scanning device 1.
  • the height of the backscatter scanning device 1 mounted on the support device 2 can be adjusted by arranging the security inspection system as its supporting device 2, so that the backscattered flying spot can be adjusted according to the height of the object a during scanning.
  • the projection size and the opening angle can effectively improve the quality of the image generated by the security inspection system based on the backscatter scanning device 2.
  • the supporting device 2 may adopt a ring structure, and the height of the backscattering scanning device 1 may be realized by changing the ring diameter of the supporting device 2; or the supporting device 2 may also adopt a gantry frame structure by changing the supporting device
  • the height of the two support arms 21 on both sides of the inspection channel is 2 to achieve the height of the backscatter scanning device 1.
  • the support arm 21 when the support device 2 adopts the gantry frame structure, in order to adjust the heights of the two support arms 21 of the support device 2 on both sides of the inspection channel, the support arm 21 may be disposed to include at least two arranged in the vertical direction. An arm section, and the at least two arm sections are sleeved relative to each other such that the support arm 21 changes its height by relative expansion and contraction of the arm sections; or the support arm 21 may be arranged to include at least the upper and lower arrangements Two arm sections, and the at least two arm sections are rotatably coupled such that the support arm 21 changes its height by relative rotation of the arm sections.
  • the security inspection system includes a backscatter scanning device 1 and a support device 2, wherein the backscatter scanning device 1 is used to scan the object a based on the Compton scattering effect.
  • the support device 2 is used to support the backscatter scanning device 1 and to adjust the height of the backscatter scanning device 1.
  • the backscatter scanning device 1 of this embodiment includes a backscattered ray source device 11, a backscatter detecting device 12, and a backscattering capsule 13, and the backscattered ray source device 11 and the backscatter detecting device 12 are both disposed at In the backscattering chamber 13, wherein the backscattered ray source device 11 is configured to emit X-rays; the backscatter detecting device 12 is configured to receive the backscattered rays after the radiation emitted from the backscattered ray source device 11 is irradiated to the object a and The received backscattered rays are converted into electrical signals for recording for use in generating backscattered images, which may employ a detector array structure.
  • the ray By arranging the backscattering ray source device 11 and the backscattering detecting device 12, the ray can be shielded, the damage caused by the radiant radiation to the human body and the like can be reduced, and the backscattering scanning device 1 is also more convenient in the supporting device. 2 on the installation.
  • the support device 2 of this embodiment includes two bases 25 and two support arms 21, wherein the two support arms 21 are spaced apart from each other such that there is a hollow space between them to form a supply.
  • the inspection passage through which the specimen a passes that is, enables the specimen a to pass between the two;
  • the two bases 25 are respectively disposed at the bottom ends of the two support arms 21, and the bottom surface of the base 25 is larger than the bottom of the support arm 21.
  • the area therefore, is advantageous for increasing the support stability of the support device 2.
  • the supporting device 2 of the embodiment adopts a gantry frame structure, has a simple structure, is convenient to use, and has low cost.
  • the support arm 21 includes two arm sections arranged in the vertical direction, which are a first arm section 211 and a second arm section 212, respectively, wherein the first arm The bottom end of the joint 211 is connected to the base 25, and the second arm joint 212 is disposed above the first arm joint 211 and sleeved with the first arm joint 211.
  • the support arm 21 is telescopic and adjustable in height.
  • the backscattering capsule 13 is connected between the two support arms 21 and is located above the upper second arm section 212 of the two arm sections.
  • the backscattering cabin 13 can be directly connected to the two supporting arms 21, or a cross arm connected to the two supporting arms 21 can be additionally added between the two supporting arms 21, and the backscattering cabin 13 can be disposed on the cross arm. In this way, the backscattering capsule 13 is indirectly connected to the two support arms 21 via the cross arm.
  • the height of the support arm 21 is changed, which can drive the backscatter scanning device 1 to move up and down, changing the height of the backscatter scanning device 1, so that during the inspection process
  • the height of the backscatter scanning device 1 can be adjusted by the supporting device 2 according to the difference of the object a, and the relative height between the backscatter scanning device 1 and the object a can be changed to bring the backscatter scanning device 1 closer to or Keeping away from the object a, this not only helps to expand the scope of the safety inspection system, meets the inspection requirements of more different types of objects, and also improves the quality of backscattered images.
  • the second arm section 212 can be extended relative to the first arm section 211 to increase the support arm.
  • the height of 21 causes the backscatter scanning device 1 to rise to a higher position to prevent the backscatter scanning device 1 from colliding with the container truck due to the height being too low, thereby ensuring that the container truck can smoothly pass through the inspection channel;
  • the object a is a passenger car with a lower height
  • the height of the backscatter scanning device 1 is not adjustable, that is, if the backscatter scanning device 1 is still at a higher height position as shown in FIG.
  • the backscatter scanning device 1 The distance from the top of the passenger car is large. In this case, although the passenger car can pass through the inspection channel smoothly, the backscatter scanning device 1 can also scan the passenger car to generate a backscatter image, but it is found during use. The backscattered image generated at this time is of poor quality, and the principle thereof is explained in conjunction with FIG.
  • the upper and lower planes at the heights h1 and h2, respectively, can be regarded as the tops of different objects a, for example, the plane at the higher position h1 (referred to as the h1 plane) can be regarded as a container truck. At the top, the plane at the lower position h2 (the h2 plane for short) is regarded as the top of the passenger car. If the height of the backscatter scanning device 1 is not adjustable, the h2 plane is more in the height direction than the h1 plane during the inspection. Far from the backscatter scanning device 1, that is, the height of the backscatter scanning device 1 from the h2 plane is greater than the height of the plane h1.
  • the projection of the spot of the ray emitted by the backscattered ray source device 11 on the h2 plane is greater than The projection on the h1 plane results in a lower image resolution.
  • the opening angle ⁇ 2 formed between the backscatter detecting device 12 and the h2 plane is smaller than the opening angle formed between the backscatter detecting device 12 and the h1 plane. ⁇ 1 , resulting in low detection efficiency, which causes the backscatter scanning device 1 to scan the h2 plane with a large difference in height to produce an image with poor quality.
  • the difference in the relative distance between the backscatter scanning device 1 and the sample a affects the projection size and the opening angle of the backscattered spot spot, and the image resolution is affected by the projection size and the opening angle of the flying spot. And the detection efficiency, therefore, the difference in the relative distance between the backscatter scanning device 1 and the object a has a large influence on the quality of the backscattered image.
  • this embodiment can adjust the height of the backscatter scanning device 1 by setting the supporting device 2 so that when the object a is changed from a higher object such as a container truck to a lower object such as a passenger car, the supporting device 2 can be utilized.
  • the backscatter scanning device 1 is lowered to a lower height, for example, from the height shown in FIG. 1 to the height shown in FIG. 3, the projection size of the flying spot is reduced, and the opening angle is increased to improve the security inspection system.
  • the image quality of an inspection image of a lower object such as a passenger car.
  • the security inspection system can more easily and quickly adjust the backscatter scanning device 1 to a more appropriate height, so that the object a can pass smoothly, and a higher quality backscatter image can be obtained.
  • the locking device can lock the backscatter scanning device 1 in various manners such as a screw connection manner, a hooking manner or a snapping manner.
  • the locking device can include a threaded connection member and is disposed correspondingly in the height direction on the first arm joint 211. And a plurality of threaded connecting holes on the second arm joint 212 are engaged with the threaded connecting holes of different height positions by the threaded connecting members to maintain the backscatter scanning device 1 at different height positions.
  • the present disclosure can effectively adjust the height of the backscatter scanning device 1 mounted on the supporting device 2 by setting the security inspection system as its supporting device 2, and can effectively improve the image generated by the security inspection system based on the backscatter scanning device 2. the quality of.
  • a transmission scanning device 4 may be added to the foregoing security inspection system, so that the security inspection system of the present disclosure can integrate the backscatter scanning device 1 And the transmission scanning device 4, in addition to being able to perform inspection based on backscatter scanning technology, can also perform inspection based on the transmission scanning technology, so that the security inspection system can not only utilize the advantages of backscatter scanning technology, but also achieve lower radiation dose and lighter materials.
  • the sensitive and intuitive inspection process can also take advantage of the advantages of transmission scanning technology to achieve a better penetration and better image quality inspection process.
  • the transmissive source device 41 of the transmissive scanning device 4 may be disposed at a side of the support device 2.
  • the transmissive ray source device 41 and the backscatter ray source device 11 are disposed at different portions of the support device 2, the arrangement of the transmissive scanning device 4 and the backscatter scanning device 1 on the support device 2 is more facilitated, while It is also advantageous to reduce the risk of interference between the two; on the other hand, since the backscatter scanning device 1 is disposed at the upper portion of the supporting device 2, a top viewing angle detection is formed, and the transmissive scanning device 4 is disposed at the side of the supporting device 2 to form a side viewing angle. The detection, therefore, can also obtain inspection images of different viewing angles, thereby achieving more accurate and reliable inspection of the object a.
  • the transmissive ray source device 41 When the transmissive ray source device 41 is disposed at the side of the support device 2, it may be disposed only on one side of the support device 2, in which case the transmission detecting device for receiving the transmitted ray may simultaneously include the first transmission detecting device And a second transmission detecting device, the first transmission detecting device is disposed on the other side of the supporting device 2 opposite to the transmitted ray source device 41, and the second transmitting detecting device is disposed at the upper portion of the supporting device 2 and with the backscattering scanning device 1 is staggered along the extending direction of the inspection passage so that the transmitted rays can be simultaneously received in two different viewing angle directions, and the overall scanning inspection of the object a is performed more efficiently.
  • the security inspection system includes both the backscatter scanning device 1 and the transmission scanning device 4
  • the security inspection system includes both the backscatter scanning device 1 and the transmission scanning device 4
  • the second embodiment is identical to the first embodiment shown in Figures 1-4 above in that the backscatter scanning device 1 is still disposed on the upper portion of the support device 2, and the support device 2 is also Still adopting a gantry frame structure comprising two support arms 21 on opposite sides of the inspection channel, and the support arm 21 still regulates the backscatter scanning device 1 by the relative expansion and contraction of its first arm segment 211 and second arm segment 212 Height to improve backscattered image quality, but the main difference is that the second embodiment includes a backscattering scanning device 1 and a transmissive scanning device 4, and the transmissive scanning device 4 includes a transmissive ray source device 41, a transmission detecting device and a second transmission detecting device, wherein the transmissive ray source device 41 is disposed in a transmissive chamber 24 mounted on a side (particularly outside) of a support arm 21 for emitting transmitted radiation, which may adopt an electronic straight line a plurality of structural forms such as an accelerator, an inductive accelerator, or
  • the security inspection system of the second embodiment includes not only the top view backscatter scanning device 1 but also the side view transmission scanning device 4, so that the security inspection system can provide both backscattering and transmissive scanning modes, and They are distributed in vertical and horizontal views, that is, side view transmission and top view backscatter, which are more abundant in function and more accurate in detection results.
  • the backscatter scanning device 1 and the transmission scanning device 4 When the safety inspection system is working, according to actual needs, it is possible to select only one of the backscatter scanning device 1 and the transmission scanning device 4 to work, obtain only the top view backscatter image or only obtain the side view transmission image, or select to be scattered. Both the scanning device 1 and the transmissive scanning device 4 operate, and both the top view backscattered image and the side view transmitted image are obtained at the end of the scan. Wherein, when both the scatter scanning device 1 and the transmission scanning device 4 are selected to operate, the backscatter scanning device 1 and the transmission scanning device 4 can be simultaneously unwound to more easily prevent the transmission imaging and the backscatter imaging from interfering with each other.
  • the transmission scanning device 4 of this embodiment may be configured to have three working modes of a high dose mode, a low dose mode, and a high and low metering switching mode.
  • the transmission scanning device 4 When the transmission scanning device 4 is operated in the high-dose mode, the radiation dose is large, the transmission effect is better, but the damage to the human body and the like is large, and in this mode, it is preferable to avoid the portion of the test object a such as the cab of the vehicle.
  • the transmissive scanning device 4 is activated to perform transmissive scanning on the container truck, and after the scanning is completed, a portion other than the cab is obtained.
  • the side view transmission image when the transmission scanning device 4 operates in the low dose mode, the radiation dose is small, the transmission effect is relatively poor, but the human body is safe, and the mode can be used for the object a (such as a container truck or a small Each part of the passenger car, etc. is scanned, and a side view transmission image of the entire object a (such as a whole car) is obtained after the scanning is completed; and when the transmission scanning device 4 operates in the high and low metering switching mode, the inspection can be flexibly and conveniently satisfied. Different requirements for transmission and human safety in different parts of a, for example, when scanning a container truck, you can use low dose first.
  • the cab is scanned, and after the cab passes through the transmitted ray source 41, the transmissive scanning device 4 is switched to the high dose mode, and the remaining parts such as the container other than the cab are scanned, and the scanning ends to obtain the side view of the whole vehicle. Transmission image.
  • the vertical mount 22 and the lateral mount 23 are disposed in a coplanar manner such that the first transmission detecting means and the second transmission detecting means can be identical to the object a to be inspected Plane imaging.
  • the vertical mounting frame 22 and the lateral mounting frame 23 are respectively arranged offset from the support arm 21 and the backscatter scanning device 1 in the extending direction of the inspection channel, so that the transmission detecting device does not affect the expansion and contraction of the support arm 21, nor does it
  • the backscatter scanning device 1 undergoes physical interference and is advantageous in reducing mutual interference between transmitted rays and backscattered rays.
  • the lateral mounting bracket 23 is coupled to the backscattering capsule 13, which enables the lateral mounting bracket 23 to carry the second transmission detecting device located thereon along with the backscatter scanning.
  • the device 1 moves up and down together, that is, enables the second transmission detecting device to change the height together with the backscatter scanning device 1 under the adjustment of the supporting device 2, which facilitates adjusting the second transmission detecting device according to the height of the object a to be detected.
  • the relative height between the objects a is obtained as a transmission image of good quality.
  • the bottom surface of the lateral mounting frame 23 may be disposed flush with the bottom surface of the backscattering cabin 13 in order to more accurately adjust the heights of the two, and more reasonably meet the different requirements of the different inspection objects a for the height of the safety inspection system .
  • the supporting device 2 is set to be height-adjustable, and the advantages thereof are that it is advantageous for improving image quality, improving the accuracy and reliability of the inspection result, and also facilitating the transition, because after the inspection is finished, It is possible to easily complete the transition without lowering the safety inspection system, and simply lowering the support device 2, for example, lowering the support device 2 to such an extent that the overall height of the safety inspection system is less than the height of the container, ie
  • the three-dimensional size of the safety inspection system can be made smaller than the three-dimensional size of the container for accommodating the safety inspection system, so that the safety inspection system can be transferred into the container through the container truck after the use, or it can be directly lowered.
  • the safety inspection system is placed in the open frame of the chassis or placed directly on the container truck chassis for transfer, so that the overall height of the vehicle after placement does not exceed the vehicle height required by road regulations.
  • the safety inspection system further includes a walking wheel 3 disposed at the bottom of the supporting device 2.
  • a walking wheel 3 disposed at the bottom of the supporting device 2.
  • two walking wheels 3 are provided at the bottom of each base 25; and as shown in FIG. 5 and FIG. 6, in the foregoing second embodiment, the right side
  • the bottom of the base 25 and the bottom of the transmissive compartment 24 on the left side are respectively provided with two walking wheels 3 and four traveling wheels 3.
  • the safety inspection system can move by itself, which is not only convenient for the transition, but also because it does not need to be restricted to the chassis exhaust, left rudder, right rudder and other related road regulations as the vehicle-mounted mobile safety inspection system. Therefore, it is more flexible and has a wider range of applications.
  • the security inspection system can realize both the fast inspection scanning mode and the active scanning mode, and the usage mode is more flexible, and can conveniently meet more security inspection requirements.
  • the fast inspection scan mode is implemented, the walking wheel 3 is made stationary, the safety inspection system is kept stationary, and the object to be inspected is moved, and the scanning inspection process is completed through the inspection channel, thereby realizing a high throughput scanning process;
  • the active scanning mode the object a is stationary, and the security inspection system actively moves under the action of the walking wheel 3 to complete the scanning inspection process and obtain a high quality scanned image.
  • the transmission scanning device 4 may first adopt a low dose.
  • the mode scans the cab with the driver, and when the cab passes the transmitted ray source 41, the transmissive scanning device 4 can switch to the high dose mode to scan the rest of the container other than the cab, or The transmissive scanning device 4 can also start scanning the remaining parts of the container outside the cab with the high dose mode after the cab is not activated and after the cab passes; for the passenger car, the transmissive scanning device 4 can The low dose mode is used throughout the fast inspection process.
  • the walking wheel 3 can be either a track wheel or a universal wheel.
  • the security inspection system can move on the track.
  • the safety inspection system can not only flexibly move, but also can flexibly turn, and does not require civil construction, and is convenient for transition and relocation.
  • an optical or magnetic mark can be set on the ground to further facilitate the walking of the walking wheel 3, so that the movement path of the safety inspection system is more in line with the actual needs of the scanning, thereby obtaining more accurate and reliable inspection. result.
  • the safety inspection system can flexibly adjust the moving direction during the scanning process, which is also advantageous for more reliably preventing the safety inspection system from colliding with the object a during the movement. Improve usage security.
  • an anti-collision detecting device can also be provided in the security inspection system.
  • the collision avoidance detecting device may include an anti-collision sensor disposed at the front end, the rear end, the left and right sides, and/or the inside of the support arm 21 of the security inspection system, such that, during the movement of the security inspection system, if the front end, the rear end, and/or When the anti-collision sensor on the left and right sides and/or the inside of the support arm 21 detects the obstacle, or the object a in the inspection channel collides with the inner wall of the support arm 21, the anti-collision sensor can send a signal to notify the alarm device to issue The alarm is notified and the control device is controlled to control the safety inspection system to automatically stop the movement to prevent the collision from occurring.
  • the object information identifying means such as a license plate identifying means or a box number identifying means, in the security check system, and to check the identified vehicle information or container information.
  • the object information is bound to the scanned image, so that the object a is matched with the scanned image, which facilitates subsequent processing of the record.
  • the security inspection system of the present disclosure can obtain a higher quality scanned image, which includes not only a higher quality backscattered image that can highlight organic matter and is easy to find contraband, but also a higher quality. It has a high penetration and high resolution transmission image, and it can also have an active scan mode and a fast scan mode. It can be seen that the security inspection system of the present disclosure integrates the advantages of various inspection systems into one body, and is convenient to use flexibly according to the difference of the inspection object a and the scanning requirements.

Abstract

Un système d'inspection de sécurité, qui se rapporte au domaine technique de l'inspection de sécurité ; le système d'inspection de sécurité comprend un dispositif de balayage de rétrodiffusion (1) et un dispositif de support (2) ; le dispositif de support (2) forme un canal d'inspection qui permet à un objet inspecté (a) de passer à travers celui-ci, et le dispositif de balayage de rétrodiffusion (1) est disposé au niveau d'une partie supérieure du dispositif de support (2) et comprend un dispositif de source de rayons de rétrodiffusion (11) et un dispositif de détection de rétrodiffusion (12), le dispositif de support (2) réglant la hauteur du dispositif de balayage de rétrodiffusion (1). Le dispositif de support (2) du système d'inspection de sécurité peut ajuster la hauteur du dispositif de balayage de rétrodiffusion (1) monté sur le dispositif de support (2) de façon à faciliter l'ajustement de la taille de projection et de la taille d'angle d'ouverture d'un point de vol rétrodiffusé en fonction de la hauteur de l'objet inspecté (a) pendant le balayage, et ainsi la qualité d'imagerie d'une image rétrodiffusée peut être efficacement améliorée.
PCT/CN2019/076609 2018-05-09 2019-03-01 Système d'inspection de sécurité WO2019214324A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115789410A (zh) * 2021-09-09 2023-03-14 同方威视技术股份有限公司 支撑平台和辐射检查设备

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN109490977A (zh) * 2019-01-04 2019-03-19 清华大学 检查设备
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CN115931937A (zh) * 2021-08-17 2023-04-07 同方威视技术股份有限公司 背散射检查设备
CN115508392A (zh) * 2022-10-28 2022-12-23 同方威视技术股份有限公司 扫描成像设备和扫描成像方法
WO2024088018A1 (fr) * 2022-10-28 2024-05-02 同方威视技术股份有限公司 Système d'inspection autonome comportant une région d'inspection

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692028A (en) * 1995-09-07 1997-11-25 Heimann Systems Gmbh X-ray examining apparatus for large-volume goods
US20120257717A1 (en) * 2011-04-05 2012-10-11 Satpal Singh Small mobile x-ray scanning system
CN106371146A (zh) * 2016-11-25 2017-02-01 同方威视技术股份有限公司 检查系统
CN205982133U (zh) * 2016-08-23 2017-02-22 中国电建集团核电工程公司 旋转调节式射线机支架
CN206399865U (zh) * 2016-12-29 2017-08-11 同方威视技术股份有限公司 可移动物品检查系统
CN107300721A (zh) * 2017-08-10 2017-10-27 苏州曼德克光电有限公司 一种基于射线的载货车辆三维成像检测系统
CN108732192A (zh) * 2018-05-09 2018-11-02 清华大学 安全检查系统
CN208283316U (zh) * 2018-05-09 2018-12-25 清华大学 安全检查系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201225921A (en) * 2010-12-22 2012-07-01 Ind Tech Res Inst Dynamometer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5692028A (en) * 1995-09-07 1997-11-25 Heimann Systems Gmbh X-ray examining apparatus for large-volume goods
US20120257717A1 (en) * 2011-04-05 2012-10-11 Satpal Singh Small mobile x-ray scanning system
CN205982133U (zh) * 2016-08-23 2017-02-22 中国电建集团核电工程公司 旋转调节式射线机支架
CN106371146A (zh) * 2016-11-25 2017-02-01 同方威视技术股份有限公司 检查系统
CN206399865U (zh) * 2016-12-29 2017-08-11 同方威视技术股份有限公司 可移动物品检查系统
CN107300721A (zh) * 2017-08-10 2017-10-27 苏州曼德克光电有限公司 一种基于射线的载货车辆三维成像检测系统
CN108732192A (zh) * 2018-05-09 2018-11-02 清华大学 安全检查系统
CN208283316U (zh) * 2018-05-09 2018-12-25 清华大学 安全检查系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115789410A (zh) * 2021-09-09 2023-03-14 同方威视技术股份有限公司 支撑平台和辐射检查设备
CN115789410B (zh) * 2021-09-09 2024-03-12 同方威视技术股份有限公司 支撑平台和辐射检查设备

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