Multi-channel radiographic inspection apparatus

Abstract

A kind of ray inspection equipment, comprising: fixed frame, multiple inspection channels, scanning device and controller.Fixed frame has the general circular ring shape.Multiple inspection channels are arranged in the circumferential direction in the inside of fixed frame, and each inspection channel is suitable for carrying the target to be inspected.Scanning device includes: radiation source 2, is installed in the center of fixed frame, the radiation beam generated by the radiation source can be radiated to each inspection channel;And receiving device, in the manner of extending in the circumferential direction, is installed on fixed frame, and is suitable for receiving the radiation beam passing through each described inspection channel.Controller is suitable for controlling the scanning device to sequentially scan the target in each inspection channel.The first sensor of each inspection channel is suitable for detecting whether the target exists in the inspection channel, and the controller controls the scanning device to only scan the target when the first sensor detects that the inspection channel has the target.

Description

[0001] This disclosure is a divisional application of the original application, number 202011306389.4, entitled "Multi-channel X-ray Inspection Equipment". Technical Field

[0002] Embodiments of this disclosure relate to a radiographic inspection apparatus, and more particularly to a multi-channel radiographic inspection apparatus that can place a target to be inspected at multiple locations. Background Technology

[0003] For public safety reasons, non-intrusive security screening systems are frequently used in large public places such as large exhibitions, temporary highway checkpoints, border crossings, and stadiums to inspect targets such as suitcases or packages. These systems utilize vehicle-mounted X-ray inspection equipment to check for contraband. X-ray inspection equipment mainly consists of an inspection channel and a scanning device. The target being inspected typically passes through the inspection channel of the X-ray inspection equipment via a conveyor structure. The scanning device mainly includes a radiation source mounted on one side of the inspection channel for emitting X-ray beams, and a detector array mounted on the other side of the inspection channel for receiving the radiation beams.

[0004] In existing X-ray inspection equipment, the target being inspected can only be scanned in a single inspection channel, and the scanning device can only scan the target within that single inspection channel, resulting in low inspection efficiency. Currently, X-ray inspection equipment with dual channels has been developed, allowing the target within each inspection channel to be scanned. However, each inspection channel requires an independent scanning device, thus increasing the cost of the X-ray inspection equipment. Summary of the Invention

[0005] The purpose of this disclosure is to address at least one aspect of the aforementioned problems and defects existing in the prior art.

[0006] According to one aspect of this disclosure, a radiographic inspection apparatus is provided, comprising: a fixed frame, a plurality of inspection channels, a scanning device, and a controller. The fixed frame is generally annular. The plurality of inspection channels are arranged circumferentially inside the fixed frame, each inspection channel being adapted to carry a target to be inspected. The scanning device includes: a radiation source 2, mounted at the center of the fixed frame, the radiation source generating a radiation beam capable of radiating to each inspection channel; and a receiving device mounted on the fixed frame in a manner extending in the circumferential direction, adapted to receive the radiation beam passing through each of the inspection channels. The controller is adapted to control the scanning device to sequentially scan and inspect targets within each inspection channel. Each inspection channel includes: a first sensor adapted to detect the presence of the target in the inspection channel, the controller controlling the scanning device to scan and inspect the target only when the first sensor detects the presence of a target in the inspection channel.

[0007] According to one embodiment of this disclosure, the radiation source is configured to rotate about a rotation axis.

[0008] According to one embodiment of this disclosure, the receiving device is configured to move circumferentially relative to the center of the fixed frame on the fixed frame.

[0009] According to one embodiment of this disclosure, the X-ray inspection device further includes a synchronization module adapted to control the angular velocity of the receiving device moving in the circumferential direction relative to the center of the fixed frame to be the same as the angular velocity of the radiation source rotating in a circle within the fixed frame, so that the scanning device can move sequentially to the vicinity of each of the inspection channels.

[0010] According to one embodiment of the present disclosure, the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, the plurality of sub-receiving devices being configured to receive radiation beams passing through a plurality of inspection channels respectively.

[0011] According to one embodiment of this disclosure, the radiation source is adapted to generate a radiation beam radiating in a 360-degree circumferential direction.

[0012] According to one embodiment of this disclosure, the receiving device is configured to move circumferentially relative to the center of the fixed frame on the fixed frame to sequentially receive radiation beams passing through a plurality of inspection channels.

[0013] According to one embodiment of the present disclosure, the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, the plurality of sub-receiving devices being configured to receive radiation beams passing through a plurality of inspection channels respectively.

[0014] According to one embodiment of the present disclosure, each of the inspection channels further includes: at least one gate disposed on at least one of the inlet and outlet of the inspection channel, and configured to close the inlet and outlet during scanning inspection after the target to be inspected is placed into the inspection channel and / or when the scanning device detects a suspicious item in the target.

[0015] According to one embodiment of the present disclosure, each of the inspection channels includes: a second sensor adapted to detect whether the gate is closed or open, and the controller controls the scanning device to scan and inspect the target in the inspection channel only when the second sensor detects that at least one gate is closed.

[0016] According to one embodiment of this disclosure, the scanning device further includes a shielding device adapted to prevent a radiation beam emitted from the radiation source from being emitted into the inspection channel when a first sensor in the inspection channel detects that there is no target in the inspection channel, or when a second sensor in the inspection channel detects that the gate is open.

[0017] According to one embodiment of this disclosure, when a first sensor in the inspection channel detects that there is no target in the inspection channel, or when a second sensor in the inspection channel detects that the gate is open, the controller shuts off the radiation source of the scanning device that has moved to the vicinity of the inspection channel.

[0018] According to one embodiment of this disclosure, when the first sensor in the inspection channel detects that there is no target in the inspection channel, or when the second sensor in the inspection channel detects that the gate is open, the controller controls the scanning device to pass through the inspection channel at a faster speed.

[0019] According to one embodiment of this disclosure, the radiation source is adapted to emit multiple angled radiation beams toward the same inspection channel; and the receiving device includes multiple detector arrays, the receiving surfaces of the multiple detector arrays being arranged at an angle to each other to receive the multiple angled radiation beams respectively.

[0020] According to one embodiment of this disclosure, each inspection channel further includes a conveying device disposed at the lower part of the inspection channel and adapted to convey the target in a horizontal direction perpendicular to the circumferential direction.

[0021] According to one embodiment of the present disclosure, the X-ray inspection device further includes an annular rotating frame (6), which is rotatably mounted on the fixed frame, and the receiving device is mounted on the rotating frame to rotate with the rotating frame.

[0022] According to one embodiment of this disclosure, the X-ray inspection equipment further includes a drive device comprising a motor and a conveyor belt, the motor driving the rotating frame to rotate relative to the fixed frame via the conveyor belt.

[0023] According to one embodiment of the present disclosure, a plurality of ball bearings are provided between the fixed frame and the rotating frame. Attached Figure Description

[0024] Figure 1 A simplified schematic diagram of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure is shown;

[0025] Figure 2 It shows Figure 1 A top view of the X-ray inspection equipment shown;

[0026] Figure 3 A simplified schematic diagram illustrating an exemplary embodiment of the present disclosure is shown, showing the scanning of an inspection item in an inspection channel;

[0027] Figure 4 A simplified schematic diagram of a radiographic inspection apparatus, illustrating another exemplary embodiment of the present disclosure, is shown; and

[0028] Figure 5 A flowchart illustrating the operation of a radiographic inspection apparatus according to an exemplary embodiment of this disclosure is shown. Detailed Implementation

[0029] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0030] In the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the drawings. Techniques, methods, and apparatuses known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatuses should be considered part of the specification.

[0031] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0032] In the description of this disclosure, it should be understood that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0033] According to a general inventive concept of this disclosure, a radiographic inspection apparatus is provided, comprising: a fixed frame, a plurality of inspection channels, a scanning device, and a controller. The fixed frame is generally annular. The plurality of inspection channels are arranged circumferentially inside the fixed frame, each inspection channel being adapted to carry a target to be inspected. The scanning device includes: a radiation source 2, mounted at the center of the fixed frame, the radiation source generating a radiation beam capable of radiating to each inspection channel; and a receiving device, mounted on the fixed frame extending in the circumferential direction, adapted to receive the radiation beam passing through each of the inspection channels. The controller is adapted to control the scanning device to sequentially scan and inspect targets within each inspection channel.

[0034] Figure 1 A simplified schematic diagram of a radiographic inspection apparatus according to an exemplary embodiment of the present disclosure is shown; Figure 2 It shows Figure 1 A top view of the X-ray inspection equipment shown; Figure 3 A simplified schematic diagram of an exemplary embodiment of the present disclosure is shown, illustrating scanning an inspection item in an inspection channel.

[0035] In one exemplary embodiment, see Figure 1-3The X-ray inspection device 100 is suitable for inspecting suitcases, packages, handbags, and other targets 200 for prohibited items in places with high personnel flow, such as train stations, airports, stadiums, and shopping malls. The X-ray inspection device 100 includes: a fixed frame 5, multiple (four shown) inspection channels 1, a scanning device, and a controller. The fixed frame 5 is generally annular and is mounted upright on a base 51. Multiple inspection channels 1 are arranged side-by-side circumferentially inside the fixed frame 5. Each inspection channel 1 is suitable for carrying the target 200 to be inspected, and each inspection channel 1 is located in a fan-shaped area between the center and the outer periphery of the fixed frame 5. The scanning device includes a radiation source 2 and a receiving device 3. The radiation source 2 is mounted at the center of the fixed frame 5, and the radiation beam 21 generated by the radiation source 2 can sequentially radiate to each inspection channel 1; the receiving device 3 is mounted on the fixed frame 5 extending in the circumferential direction and is suitable for receiving the radiation beam 21 passing through each of the inspection channels 1. The controller is suitable for controlling the scanning device to sequentially scan and inspect the target 200 within each inspection channel 1.

[0036] According to the X-ray inspection device 100 of this disclosure, each inspection channel 1 further includes a first sensor 17. The first sensor 17 is adapted to detect whether the target 200 to be inspected exists in the inspection channel 1. The controller controls the scanning device to scan the target only when the first sensor 17 detects that the target is present in the inspection channel. That is, if the first sensor 17 detects that the target 200 to be inspected does not exist in the inspection channel 1, the controller controls the scanning device to turn off when passing through the inspection channel where the target 200 is not present. In this way, the radiation beam 21 will not irradiate the inspection channel where the target is not present, and the passenger will not be exposed to radiation during the process of placing the target 200 to be inspected into the inspection channel 1. The first sensor 17 may include a weight sensor or an optical sensor disposed at the bottom of the inspection channel.

[0037] According to the X-ray inspection apparatus 100 of this disclosure, the scanning device sequentially scans and inspects the target 200 in each inspection channel 1. In this way, multiple inspection channels can share a single scanning device, and the target can be scanned and inspected independently in each inspection channel, thus improving inspection efficiency.

[0038] In one embodiment, the radiation source 2 is configured to rotate about a rotation axis and generate a radiation beam 21 with a fan-shaped cross-section. As the radiation source 2 rotates one revolution, it can sequentially emit the radiation beam 21 into each inspection channel. Further, the receiving device 3 is configured to move circumferentially relative to the center of the fixed frame 5. The receiving device 3 can receive the radiation beam 21 passing through each of the inspection channels 1. A controller controls a scanning device moved to the vicinity of one of the plurality of inspection channels 1 to scan and inspect the target 200 within that inspection channel 1.

[0039] In one exemplary embodiment, the X-ray inspection device 100 further includes a synchronization module 4, which is adapted to control the angular velocity of the receiving device 3 moving circumferentially relative to the center of the fixed frame 5 to be the same as the angular velocity of the radiation source 3 rotating around the center of the fixed frame 5. This allows the scanning device 2 to move sequentially to the vicinity of each inspection channel 1, and the radiation beam 21 emitted by the radiation source 2 to be accurately projected onto the receiving device 3 after passing through the inspection channel 1. Thus, the size of the receiving device 3 only needs to correspond to the projection range of the radiation beam 21 emitted by the radiation source 2; the receiving device 3 does not need to surround the entire fixed frame 5.

[0040] In an alternative embodiment, the receiving device 4 may be configured to be fixed relative to the fixed frame 5, and may include a plurality of sub-receiving devices arranged in the circumferential direction, the plurality of sub-receiving devices being configured to receive radiation beams passing through the plurality of inspection channels respectively. That is, the plurality of sub-receiving devices surround the fixed frame 5 in the circumferential direction. In this way, as the radiation source 2 rotates, the radiation beam 21 illuminating any inspection channel 1 can reach the corresponding sub-receiving device.

[0041] In an alternative embodiment, the radiation source is adapted to generate a radiation beam radiating in a 360-degree circumferential direction, meaning the radiation beam generated by the radiation source can simultaneously irradiate multiple inspection channels. Further, the receiving device is configured to move circumferentially relative to the center of the fixed frame 5 on the fixed frame 5 to sequentially receive radiation beams passing through multiple inspection channels, thereby sequentially scanning and inspecting targets in multiple inspection channels. In another embodiment, the receiving device includes multiple sub-receiving devices arranged in the circumferential direction, each configured to receive radiation beams passing through multiple inspection channels. That is, the multiple sub-receiving devices surround the fixed frame 5 in the circumferential direction. Thus, the radiation beam 21 irradiated by the radiation source onto any inspection channel 1 can reach the corresponding sub-receiving device.

[0042] See Figure 1-3In one exemplary embodiment, each of the inspection channels 1 includes an inspection space 16 enclosed by a housing 11, the housing 11 including a support frame and a shielding material covering the support frame to prevent radiation leakage.

[0043] In one exemplary embodiment, each of the inspection channels 1 further includes at least one gate 14 disposed on at least one of the entrance and exit of the inspection space 16, and configured to close the entrance and exit during scanning inspection after the target 200 to be inspected is placed in the inspection space 16 of the inspection channel 1 and / or when the scanning device detects that the target 200 has a suspicious item. Figure 1 The diagram shows four inspection channels 16, one of which is a gate 14 that is closed or open, one gate that is fully closed, and one gate that is fully open.

[0044] In one embodiment, gates 14 are provided at both the entrance and exit of the inspection space 16. After a target 200 is placed into the inspection space 16 at the entrance, the gates 14 at the entrance and exit are closed. During scanning and / or if the scanning device detects suspicious items in the target 200, the gates at the entrance and exit remain closed to prevent the passenger from removing the target 200. Simultaneously, the alarm of the X-ray inspection equipment 100 emits an audible and / or visual warning, prompting the inspector to open the gate at the entrance or exit and remove the target 200 with suspicious items for further processing. If the scanning device detects no suspicious items in the target 200, the gates at the entrance and exit are automatically opened to allow the passenger to remove the target 200 and to allow the next target to be placed into the inspection space 16. In this way, different passengers' inspected items, such as packages and suitcases, can be placed into the inspection space 16 sequentially and scanned independently without interference.

[0045] In an alternative embodiment, the inspection space 16 has only one opening, through which a target 200 is placed or removed. A gate 14 is provided at the opening to close after the target 200 is placed into the inspection space 16. If the scanning device detects a suspicious item in the target 200, the gate 14 remains closed to prevent the passenger from removing the target 200, while the alarm of the X-ray inspection equipment 100 sounds an audible and / or visual warning, prompting the inspector to open the gate 14 at the opening and remove the target 200 with the suspicious item for further processing. If the scanning device detects no suspicious item in the target 200, the gate automatically opens to allow the passenger to remove the target 200 and to allow the next target to be placed into the inspection space 16.

[0046] In one exemplary embodiment, each inspection channel 1 further includes a second sensor 15 adapted to detect whether the gate 14 is closed or open. The second sensor may include an electrical proximity switch, a magnetic proximity switch, or an optical sensor. The controller controls the scanning device to scan the target 200 in the inspection space 16 only when the second sensor 14 detects that at least one gate 14 is closed. That is, if the second sensor detects that a gate 14 is not closed, the scanning device will not scan the inspection channel where the gate is not closed, thus avoiding the insertion or removal of the target 200 during the scanning process.

[0047] In one exemplary embodiment, the scanning device further includes a shielding device 22, which is adapted to prevent the radiation beam 21 emitted from the radiation source 2 from being emitted into the inspection space 16 when the first sensor 17 of the inspection channel 1 detects that there is no target 200 in the inspection space 16, or when the second sensor 15 of the inspection channel 1 detects that the gate 14 is open. That is, when the inspection space does not contain a target, or when it is permissible to insert or remove a target, indicating that the inspection channel 1 is in an unprepared state, the shielding device 22 will block the radiation beam 21 emitted by the radiation source 2 during the scanning device's passage through the inspection channel 1, preventing the radiation beam 21 from illuminating the inspection space. This shielding device is particularly suitable for radiation sources that continuously emit radiation beams.

[0048] In an alternative exemplary embodiment, when the first sensor 17 of the inspection channel 1 detects that there is no target 200 in the inspection space 16, or when the second sensor 15 of the inspection channel 1 detects that the gate 14 is open, i.e., when the inspection channel is not ready, the controller shuts off the radiation source 2 of the scanning device that has moved near the inspection channel 1, so that the radiation source 2 does not generate a radiation beam 21. For example, if the radiation source is configured to generate a pulsed radiation beam, a shutter-type shielding device may not be required, and the radiation source 2 can be directly shut off by the controller when it passes through the unprepared inspection channel 1.

[0049] In one exemplary embodiment, when the first sensor 17 of the inspection channel 1 detects that there is no target 200 in the inspection space 16, or when the second sensor 15 of the inspection channel 1 detects that the gate 14 is open, i.e. when the inspection channel is not ready, the controller controls the drive device 4 to drive the scanning device through the inspection channel 1 at a faster speed so as to quickly reach the next inspection channel, thereby improving the scanning inspection efficiency.

[0050] In one exemplary embodiment, see Figure 1-4The radiation source 2 is adapted to emit multiple (two beams shown in the figure) angled radiation beams 21 into the same inspection channel. The receiving device 3 includes multiple detector arrays, the receiving surfaces of which are arranged at an angle to each other to receive the multiple angled radiation beams 21 respectively. The multiple detector arrays can receive radiation beams 21 radiating from different directions, thereby obtaining scanned images of the target 200 from different angles. This allows for the formation of dual-view or even multi-view images, improving detection accuracy.

[0051] See Figure 1-3 In one exemplary embodiment, each inspection channel 1 further includes a conveyor 12, such as a belt conveyor, disposed in the lower part of the inspection space 11, and adapted to convey the target 200 in a second direction F2 perpendicular to the first direction F1. The target 200 placed in the inspection channel 1 is moved into the interior of the inspection space 11 by the conveyor 12. If the inspection space 11 has an entrance and an exit, the conveyor 12 conveys the target 200 from the entrance to the exit and removes the target at the exit. In an alternative embodiment, if the inspection space 11 has only one opening, the conveyor 12 conveys the target 200 from the opening to approximately the middle of the inspection space 11, and after undergoing scanning inspection, conveys the target back to the opening and removes the target at the opening. Further, a shielding curtain 13 is provided at the entrance and / or exit of the inspection channel to shield the radiation beam 21 within the inspection channel 1, through which the target 200 enters or exits the inspection channel 1.

[0052] Those skilled in the art will understand that the conveying device 12 is not essential. In an alternative embodiment, the conveying device may be omitted, so that the target remains stationary once placed in the inspection channel 1. Since the scanning device can move horizontally, scanning inspection of the target placed in the inspection channel can be achieved. Furthermore, shielding curtains may not be provided at the entrance and exit of the inspection channel to further simplify the structure of the X-ray inspection equipment.

[0053] See Figure 1-3 In one exemplary embodiment, the X-ray inspection device 100 further includes an annular rotating frame 5, which is rotatably mounted on the fixed frame 4. The receiving device 3 is mounted on the rotating frame 5 to rotate with the rotating frame 5. It can be understood that the rotational angular velocity of the rotating frame 6 is the same as the rotational angular velocity of the radiation source 2, so that the receiving device 3 always remains opposite to the radiation source 2 to receive the radiation beam 21 emitted from the radiation source 2.

[0054] In one exemplary embodiment, the X-ray inspection device 100 further includes a drive device comprising a motor and a conveyor belt surrounding the motor and the rotating frame 6, the motor driving the rotating frame 6 to rotate relative to the fixed frame 5 via the conveyor belt.

[0055] In one exemplary embodiment, a plurality of ball bearings 61 are provided between the fixed frame 5 and the rotating frame 6 to reduce the friction between the fixed frame and the rotating frame and to maintain the stable rotation of the rotating frame.

[0056] Figure 5 A flowchart illustrating the operation of a radiographic inspection apparatus according to an exemplary embodiment of this disclosure is shown.

[0057] The following is based on Figure 1-3 Taking the X-ray inspection device 100 shown in Figure 5 as an example, the working process of the X-ray inspection device according to the present disclosure is described.

[0058] See Figure 1-3 In step 5, when scanning a target of passenger 1 using the inspection channel 1, firstly, passenger 1 approaches the X-ray inspection equipment 100, and the gate at the entrance of inspection channel 1 opens; passenger 1 places the target 100, such as a suitcase or package, into inspection channel 1, and the gates at the entrance and exit of inspection channel 1 close; the drive device drives the radiation source and receiving device of the scanning device to move to inspection channel 1, and the radiation source emits a radiation beam to scan the target within the inspection channel; if the scanning result indicates that there are suspicious items in the target, the gate will remain closed and an alarm will be triggered to alert the staff; the staff will then operate to open the gate and remove the target for further inspection; on the other hand, if the scanning result indicates that there are no suspicious items in the target and the target is safe, the gate will be opened to allow the passenger to take the target and then leave the inspection area.

[0059] Following the above operational sequence, check the targets of passenger two, passenger three, or passenger four in turn.

[0060] Figure 4 A simplified schematic diagram of a radiographic inspection apparatus according to another exemplary embodiment of this disclosure is shown. Figure 4 The X-ray inspection equipment shown has two inspection channels 1. Figure 4 The reference numerals shown are the same as those in the accompanying drawings. Figure 1 The reference numerals shown in the figures indicate the same parts and have the same function, and will not be repeated here.

[0061] In the above embodiment, an example of four independent inspection channels in one row is described. Those skilled in the art will understand that an appropriate number of inspection channels can be set according to user needs, such as three or five. Although the cross-section of the inspection channel is approximately rectangular in the illustrated embodiment, those skilled in the art will understand that the cross-section of the inspection channel can be fan-shaped, and the inspection channel is arranged on the circumference between the fixed frame and the radiation source.

[0062] According to the X-ray inspection equipment provided in the above embodiments of this disclosure, one or more rows of receiving devices (detector arrays) are mounted on a fixed frame extending in the circumferential direction. A radiation source for generating X-ray beams is rotatably mounted at the center of the fixed frame. The radiation beam generated by the radiation source can irradiate the receiving devices, thereby sequentially scanning and inspecting targets within each inspection channel. Multiple inspection channels of different sizes can be formed along the radiation direction of the radiation source as needed. The scanning and inspection of targets within the inspection channels is completed through the matching of the detector array and the radiation source, and intelligent image interpretation is performed. Each inspection channel can be imaged independently and the inspected target can be placed and retrieved independently, thereby achieving the purpose of simultaneous security inspection of multiple people and significantly improving security inspection efficiency.

[0063] The X-ray inspection equipment of this disclosure can be installed in places such as sports fields, cinemas, shopping malls, concerts and other large gatherings, enabling large crowds to pass through security quickly and at low cost.

[0064] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing any conflict in structure or principle.

[0065] Although this disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify preferred embodiments of this disclosure and should not be construed as limiting the disclosure. While some embodiments of the inventive concept of this disclosure have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the overall inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A radiographic inspection device (100), comprising: The fixed frame (5) has a roughly circular shape; Multiple inspection channels (1) are arranged circumferentially inside the fixed frame, each inspection channel being suitable for carrying the target (200) to be inspected. Scanning device, comprising: Radiation source (2) is installed at the center of the fixed frame and is adapted to generate a radiation beam capable of radiating to each inspection channel; A receiving device (3) is mounted on the fixed frame in a manner extending in the circumferential direction and is adapted to receive the radiation beam passing through each of the inspection channels; and The controller is adapted to control the scanning device to sequentially scan and inspect targets in each inspection channel. Each of the inspection channels includes a first sensor (17) adapted to detect whether the target exists in the inspection channel, and the controller controls the scanning device to scan and inspect the target only when the first sensor detects that the target exists in the inspection channel. The radiation source is configured to rotate about a rotation axis. The receiving device is configured to move circumferentially relative to the center of the fixed frame. The X-ray inspection equipment also includes a synchronization module (4), which is adapted to control the angular velocity of the receiving device moving in the circumferential direction relative to the center of the fixed frame to be the same as the angular velocity of the radiation source rotating in the circle of the fixed frame, so that the scanning device can move sequentially to the vicinity of each inspection channel.

2. The X-ray inspection equipment according to claim 1, wherein, The receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, the plurality of sub-receiving devices being configured to receive radiation beams passing through a plurality of inspection channels respectively.

3. The X-ray inspection equipment according to claim 1, wherein, The radiation source is suitable for generating a radiation beam that radiates in a 360-degree circumferential direction.

4. The X-ray inspection equipment according to claim 3, wherein, The receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, the plurality of sub-receiving devices being configured to receive radiation beams passing through a plurality of inspection channels respectively.

5. The radiographic inspection apparatus according to any one of claims 1-4, wherein, Each of the aforementioned inspection channels also includes: At least one gate (14) is provided on at least one of the entrance and exit of the inspection channel and is configured to close the entrance and exit during scanning inspection after the target to be inspected is placed in the inspection channel and / or when the scanning device detects that the target has a suspicious item.

6. The X-ray inspection equipment according to claim 5, wherein, Each of the inspection channels includes a second sensor (15) adapted to detect whether the gate is closed or open. The controller controls the scanning device to scan and inspect the target in the inspection channel only when the second sensor detects that at least one of the gates is closed.

7. The X-ray inspection equipment according to claim 6, wherein, The scanning device further includes a shielding device (22) adapted to prevent radiation beams emitted from the radiation source from being emitted into the inspection channel when the first sensor of the inspection channel detects that there is no target in the inspection channel, or when the second sensor of the inspection channel detects that the gate is open.

8. The X-ray inspection equipment according to claim 6, wherein, When the first sensor in the inspection channel detects that there is no target in the inspection channel, or when the second sensor in the inspection channel detects that the gate is open, the controller shuts off the radiation source of the scanning device that has moved to the vicinity of the inspection channel.

9. The radiographic inspection apparatus according to claim 7 or 8, wherein, When the first sensor in the inspection channel detects that there is no target in the inspection channel, or when the second sensor in the inspection channel detects that the gate is open, the controller controls the scanning device to pass through the inspection channel at a faster speed.

10. The X-ray inspection equipment according to claim 9, wherein, The radiation source is adapted to emit multiple angled radiation beams (21) into the same inspection channel; and The receiving device includes multiple detector arrays, the receiving surfaces of which are arranged at an angle to each other to receive multiple angled radiation beams respectively.

11. The X-ray inspection apparatus according to claim 10, wherein, Each of the inspection channels also includes a conveying device (12) disposed at the lower part of the inspection channel and adapted to convey the target in a horizontal direction perpendicular to the circumferential direction.

12. The X-ray inspection device according to claim 11 further includes an annular rotating frame (6), the rotating frame being rotatably mounted on the fixed frame, and the receiving device being mounted on the rotating frame to rotate with the rotating frame.

13. The X-ray inspection apparatus according to claim 12, further comprising a driving device, the driving device comprising: Electric motor, and A conveyor belt, through which the motor drives the rotating frame to rotate relative to the fixed frame.

14. The radiographic inspection apparatus according to claim 12 or 13, wherein, Multiple ball bearings (61) are provided between the fixed frame and the rotating frame.

Images