CN117192630A - Multi-channel radiographic inspection apparatus - Google Patents

Abstract

A radiographic inspection equipment includes: a fixed frame, multiple inspection channels, a scanning device and a controller. The fixed frame has a roughly circular ring shape. A plurality of inspection channels are arranged in a circumferential direction inside the fixed frame, and each inspection channel is adapted to carry an inspected target. The scanning device includes: a radiation source 2 installed in the center of the fixed frame, the radiation beam generated by the radiation source can radiate to each inspection channel; and a receiving device installed on the fixed frame in a manner extending in the circumferential direction. on, and adapted to receive said radiation beam passing through each of said inspection channels. The controller is adapted to control the scanning device to scan and inspect the targets in each inspection channel in sequence. Each inspection channel includes: a first sensor, 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 there is a target in the inspection channel.

Description

Multi-channel radiographic inspection equipment

This disclosure is a divisional application of the original application number 202011306389.4, titled Multi-channel Radiographic Inspection Equipment.

Technical field

Embodiments of the present disclosure relate to a radiographic inspection device, and in particular to a multi-channel radiographic inspection device that can place objects to be detected at multiple locations.

Background technique

Based on the needs of public safety, load-bearing security inspection systems are often used in large public places such as large exhibitions, temporary highway checkpoints, border inspection ports, and stadiums to conduct non-intrusive inspections of targets such as suitcases or packages. For example, radiographic inspection equipment on the vehicle checks the target for the presence of prohibited items. Radiographic inspection equipment mainly includes inspection channels and scanning devices. The object to be inspected usually passes through the inspection channel of the radiographic inspection equipment with the help of a transport structure. The scanning device mainly includes a radiation source installed on one side of the inspection channel and suitable for emitting X-radiation beams, and a radiation source installed on the other side of the inspection channel and A detector array adapted to receive said radiation beam.

In existing radiographic inspection equipment, the inspected target can only be scanned and inspected in a single inspection channel, and the scanning device can only scan and inspect the inspected target in a single inspection channel, so the inspection efficiency is low. Currently, radiographic inspection equipment with dual channels has been developed. The inspected targets in each inspection channel can be scanned and inspected. However, each inspection channel requires an independent scanning device, which increases the cost of the radiographic inspection equipment.

Contents of the invention

The present disclosure aims to solve at least one aspect of the above-mentioned problems and deficiencies existing in the prior art.

According to an embodiment of an aspect of the present disclosure, a radiographic inspection device is provided, including: a fixed frame, a plurality of inspection channels, a scanning device and a controller. The fixed frame has a roughly circular ring shape. A plurality of inspection channels are arranged in a circumferential direction inside the fixed frame, and each inspection channel is adapted to carry an object to be inspected. The scanning device includes: a radiation source 2 installed in the center of the fixed frame, the radiation beam generated by the radiation source can radiate to each inspection channel; and a receiving device installed in a manner extending in the circumferential direction. on the fixed frame and adapted to receive the radiation beam passing through each of the inspection channels. The controller is adapted to control the scanning device to scan and inspect the targets in each inspection channel in sequence. Each of the inspection channels includes: a first sensor, adapted to detect whether the target is present in the inspection channel, and the controller controls the scanning device only when the first sensor detects that there is a target in the inspection channel. The target is scanned and checked only when the target is detected.

According to an embodiment of the present disclosure, the radiation source is configured to be rotatable about a rotation axis.

According to an embodiment of the present disclosure, the receiving device is configured to move on the fixed frame in a circumferential direction relative to a center of a circle of the fixed frame.

According to an embodiment of the present disclosure, the radiographic inspection equipment further includes a synchronization module adapted to control the angular velocity of the receiving device moving in the circumferential direction on the fixed frame relative to the center of the fixed frame. The angular velocity of the radiation source in the circular rotation of the fixed frame is the same, so that the scanning device can move to the vicinity of each inspection channel in sequence.

According to an embodiment of the present disclosure, the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, and the plurality of sub-receiving devices are configured to respectively receive radiation beams passing through a plurality of inspection channels.

According to an embodiment of the present disclosure, the radiation source is adapted to generate a radiation beam radiating in a circumferential direction of 360 degrees.

According to an embodiment of the present disclosure, the receiving device is configured to move on the fixed frame in a circumferential direction relative to a center of a circle of the fixed frame to sequentially receive radiation beams passing through a plurality of inspection channels.

According to an embodiment of the present disclosure, the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, and the plurality of sub-receiving devices are configured to respectively receive radiation beams passing through a plurality of inspection channels.

According to an embodiment of the present disclosure, each of the inspection channels further includes: at least one gate, which is disposed on at least one of the entrance and the exit of the inspection channel, and is configured to put the inspected target into the The entrance and exit are closed during the scanning inspection after the inspection channel and/or when the scanning device detects suspicious items in the target.

According to an embodiment of the present disclosure, each inspection channel includes: a second sensor, adapted to detect that the gate is closed or opened, and the controller controls the scanning device only when the second sensor detects that the gate is closed or opened. The target in the inspection channel is scanned and inspected only when at least one gate is closed.

According to an embodiment of the present disclosure, the scanning device further includes a shielding device, adapted to be used 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 there is no target in the inspection channel. When the sensor detects that the gate is open, the radiation beam emitted from the radiation source is prevented from being emitted into the inspection channel.

According to an embodiment of the present disclosure, 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, the The controller turns off the radiation source of the scanning device moved near the inspection channel.

According to an embodiment of the present disclosure, 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, the The controller controls the scanning device to pass through the inspection channel at a faster speed.

According to an embodiment of the present disclosure, the radiation source is adapted to emit multiple angled radiation beams to the same inspection channel; and the receiving device includes multiple sets of detector arrays, and the receiving devices of the multiple sets of detector arrays The surfaces are arranged at an angle to each other to respectively receive a plurality of angled beams of said radiation.

According to an embodiment of the present disclosure, each of the inspection channels further includes a conveying device disposed at a lower part of the inspection channel and adapted to convey the target in a horizontal direction perpendicular to the circumferential direction.

According to an embodiment of the present disclosure, the radiographic inspection equipment further includes an annular rotating frame (6), the rotating frame is rotatably installed on the fixed frame, and the receiving device is installed on the rotating frame to Rotates with the rotating frame.

According to an embodiment of the present disclosure, the radiographic inspection equipment further includes a driving device, the driving device includes: a motor, and a conveyor belt, the motor drives the rotating frame to rotate relative to the fixed frame through the conveyor belt.

According to an embodiment of the present disclosure, a plurality of balls are provided between the fixed frame and the rotating frame.

Description of the drawings

FIG. 1 shows a simplified schematic diagram of a radiographic inspection device according to an exemplary embodiment of the present disclosure;

Figure 2 shows a top view of the radiographic inspection equipment shown in Figure 1;

Figure 3 shows a simple schematic diagram of scanning inspection items in an inspection channel according to an exemplary embodiment of the present disclosure;

Figure 4 shows a simplified schematic diagram of a radiographic inspection device according to another exemplary embodiment of the present disclosure; and

FIG. 5 shows a workflow diagram of a radiographic inspection device according to an exemplary embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without performing creative work fall within the scope of protection of this disclosure.

In the following detailed description, for convenience of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are illustrated in order to simplify the drawings. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification.

In the description of the present disclosure, it should be understood that the orientation indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom", etc. Or positional relationships are generally based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present disclosure and simplifying the description. Without explanation to the contrary, these directional words do not indicate and imply the referred devices or elements. Must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the scope of the present disclosure; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to define components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning. meaning and therefore cannot be construed as limiting the scope of the present disclosure.

According to a general inventive concept of the present disclosure, a radiographic inspection device is provided, including: a fixed frame, a plurality of inspection channels, a scanning device and a controller. The fixed frame has a roughly circular ring shape. A plurality of inspection channels are arranged in a circumferential direction inside the fixed frame, and each inspection channel is adapted to carry an object to be inspected. The scanning device includes: a radiation source 2 installed in the center of the fixed frame, the radiation beam generated by the radiation source can radiate to each inspection channel; and a receiving device installed in a manner extending in the circumferential direction. on the fixed frame and adapted to receive the radiation beam passing through each of the inspection channels. The controller is adapted to control the scanning device to scan and inspect the targets in each inspection channel in sequence.

FIG. 1 shows a simple schematic diagram of a radiographic inspection device according to an exemplary embodiment of the present disclosure; FIG. 2 shows a top view of the radiographic inspection device shown in FIG. 1 ; FIG. 3 shows an exemplary embodiment of the present disclosure. Embodiment A simple schematic diagram of scanning inspection items in an inspection channel.

In an exemplary embodiment, referring to FIGS. 1-3 , the radiographic inspection device 100 is suitable for inspecting objects 200 such as suitcases, packages, and handbags in places with high mobility of people, such as stations, airports, stadiums, shopping malls, etc. Whether there are prohibited items. The radiographic inspection equipment 100 includes: a fixed frame 5, a plurality (as shown in 4) inspection channels 1, a scanning device and a controller. The fixed frame 5 has a generally circular ring shape and is installed on the base 51 in an upright manner. A plurality of inspection channels 1 are arranged side by side in the circumferential direction inside the fixed frame 5 . Each inspection channel 1 is suitable for carrying the inspected target 200 . Each inspection channel 1 is arranged between the center and the outer periphery of the fixed frame 5 . in the fan-shaped area between. The scanning device includes a radiation source 2 and a receiving device 3. The radiation source 2 is installed in the center of the fixed frame 5. The radiation beam 21 generated by the radiation source 2, such as an X-ray beam, can be radiated to each inspection channel 1 in turn; It is installed on the fixed frame 5 in an upward extending manner and is adapted to receive the radiation beam 21 passing through each of the inspection channels 1 . The controller is adapted to control the scanning device to scan and inspect the target 200 in each inspection channel 1 in sequence.

According to the radiographic inspection device 100 according to the embodiment of the present disclosure, each inspection channel 1 further includes a first sensor 17 , the first sensor 17 is adapted to detect whether the inspected target 200 exists in the inspection channel 1 , and the controller The scanning device is controlled to scan and inspect the target only when the first sensor 17 detects that there is a target in the inspection channel. That is, if the first sensor 17 detects that the inspected target 200 does not exist in the inspection channel 1, the controller controls the scanning device to turn off the scanning device when passing through the inspection channel in which the target 200 does not exist. In this way, the radiation beam 21 will not be irradiated into the inspection channel where there is no target, and passengers will not be radiated by the radiation beam when 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.

According to the radiographic inspection apparatus 100 of the embodiment of the present disclosure, the scanning device sequentially scans and inspects the target 200 in each inspection channel 1 . In this way, multiple inspection channels can share one scanning device, and the inspected target can be independently scanned and inspected in each inspection channel, thereby improving inspection efficiency.

In one embodiment, the radiation source 2 is configured to be rotatable around a rotation axis and generates a radiation beam 21 with a fan-shaped cross section. The radiation source 2 rotates once to emit the radiation beam 21 into each inspection channel in sequence. Further, the receiving device 3 is arranged to move on the fixed frame 5 in the circumferential direction relative to the center of the circle of the fixed frame. The receiving device 3 can receive the radiation beam 21 passing through each of the inspection channels 1 . The controller controls the scanning device that moves near one of the plurality of inspection channels 1 to scan and inspect the target 200 in the one inspection channel 1 .

In an exemplary embodiment, the radiographic inspection equipment 100 further includes a synchronization module 4, which is adapted to control the receiving device 3 on the fixed frame 5 in the circumferential direction relative to the center of the fixed frame. The angular speed of movement in the direction is the same as the angular speed of rotation of the radiation source 3 at the center of the fixed frame 5, so that the scanning device 2 can move to the vicinity of each inspection channel 1 in turn, and the radiation source 2 emits The radiation beam 21 can be accurately projected onto the receiving device 3 after passing through the examination channel 1 . In this way, 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 , and the receiving device 3 does not need to surround the entire fixed frame 5 .

In an alternative embodiment, the receiving device 4 may be configured to be fixed corresponding to the fixed frame 5 and include a plurality of sub-receiving devices arranged in the circumferential direction, and the plurality of sub-receiving devices are configured to receive respectively. A radiation beam that passes through multiple inspection channels. That is to say, the plurality of sub-receiving devices surround the fixed frame 5 once in the circumferential direction of the fixed frame 5 . In this way, during the rotation of the radiation source 2, the radiation beam 21 irradiating any inspection channel 1 can reach the corresponding sub-receiving device.

In an alternative embodiment, the radiation source is adapted to generate a radiation beam that radiates in a 360-degree circumferential direction, that is, the radiation beam generated by the radiation source can irradiate multiple inspection channels simultaneously. Further, the receiving device is arranged to move in the circumferential direction on the fixed frame 5 relative to the center of the circle of the fixed frame 5 to sequentially receive radiation beams passing through multiple inspection channels, thereby sequentially detecting multiple Check the target in the channel for scan inspection. In another embodiment, the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, and the plurality of sub-receiving devices are configured to respectively receive radiation beams passing through a plurality of inspection channels. That is to say, the plurality of sub-receiving devices surround the fixed frame 5 once in the circumferential direction of the fixed frame 5 . In this way, the radiation beam 21 irradiated by the radiation source into any inspection channel 1 can reach the corresponding sub-receiving device.

Referring to Figures 1-3, in an exemplary embodiment, each inspection channel 1 includes: an inspection space 16 surrounded by a housing 11. The housing 11 includes a support frame and a shield covering the support frame. materials to prevent radiation leakage.

In an exemplary embodiment, each inspection channel 1 further includes: at least one gate 14, which is disposed on at least one of the entrance and exit of the inspection space 16 and is disposed to open the door 14 to be inspected. The entrance and exit are closed during the scanning inspection after the target 200 is placed in the inspection space 16 of the inspection channel 1 and/or when the scanning device detects suspicious items in the target 200 . Figure 1 shows four inspection channels 16, of which one gate 14 is in a closed or disconnected state, one gate is in a fully closed state, and one gate is in a fully open state.

In one embodiment, gates 14 are provided at both the entrance and exit of the inspection space 16 to close the gates 14 at the entrance and exit after placing the target 200 into the inspection space 16 at the entrance. During the scanning inspection and/or when the scanning device scans and detects suspicious items in the target 200, continue to close the gates at the entrance and exit to prevent passengers from taking out the target 200, and at the same time, the alarm of the radiographic inspection equipment 100 is sounded. Sound and/or light warnings prompt the inspector to open the gate at the entrance or exit and take out the target 200 with suspicious items for further processing. When the scanning device detects that there are no suspicious items in the target 200 , the gates at the entrance and exit are automatically opened to allow passengers to take out the target 200 and allow the next target to be placed into the inspection space 16 . In this way, the inspection objects of different passengers, such as packages, suitcases, etc., can be placed in the inspection space 16 in sequence and independently scanned and inspected without interference from each other.

In an alternative embodiment, the inspection space 16 is provided with only one opening, and the target 200 is placed into or removed from the inspection space 16 at this opening. The gate 14 is provided at the opening to close the gate 14 after placing the target 200 into the inspection space 16 at the opening. When the scanning device detects suspicious items in the target 200, the gate 14 is kept closed to prevent passengers from taking out the target 200. At the same time, the alarm of the radiographic inspection equipment 100 emits an audible and/or optical warning to prompt the inspector to open the At the opening of the gate 14, objects 200 with suspicious items are taken out for further processing. When the scanning device detects that there are no suspicious items in the target 200 , the gate is automatically opened to allow the passenger to take out the target 200 and to allow the next target to be placed into the inspection space 16 .

In an exemplary embodiment, each inspection channel 1 further includes: a second sensor 15 adapted to detect the closing or opening of the gate 14 . 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 and inspect the target 200 in the inspection space 16 only when the second sensor 14 detects that the at least one gate 14 is closed. That is to say, if the second sensor detects that the gate 14 is not closed, the scanning device will not scan and inspect the inspection channel whose gate is not closed. In this way, the target 200 can be avoided from being put in or taken out during the scanning inspection process.

In an exemplary embodiment, the scanning device further includes a shielding device 22, which is adapted to be used 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 opened, the radiation beam 21 emitted from the radiation source 2 is prevented from being emitted to the inspection space 16 . That is to say, when the inspection space does not have a target, or allows objects to be put in or taken out, it means that the inspection channel 1 is not ready. Then when the scanning device passes through the inspection channel 1, the shielding device 22 will The radiation beam 21 emitted by the radiation source 2 is blocked so that the radiation beam 21 does not radiate into the examination space. This type of shielding device is particularly suitable for radiation sources that emit a continuous radiation beam.

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 When the gate 14 is opened, that is, when the inspection channel is not ready, the controller turns off the radiation source 2 of the scanning device that moves near the inspection channel 1 so that the radiation source 2 does not generate the radiation beam 21 . For example, when the radiation source is set to generate a pulsed radiation beam, there is no need to install a shutter-type shielding device. When the radiation source 2 passes through the unready inspection channel 1, the radiation source 2 is directly controlled to be closed by the controller.

In an 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 target 200 is not present in the inspection space 16, When the gate 14 is opened, that is, when the inspection channel is not ready, the controller controls the driving device 4 to drive the scanning device through the inspection channel 1 at a faster speed to quickly reach the next inspection channel, thereby Improved scanning inspection efficiency.

In an exemplary embodiment, referring to Figures 1-4, the radiation source 2 is adapted to emit multiple (two beams are shown) angled radiation beams 21 towards the same examination channel. The receiving device 3 includes multiple sets of detector arrays, the receiving surfaces of the multiple sets of detector arrays being arranged at angles to each other to respectively receive multiple angled beams of the radiation beams 21 . Multiple sets of detector arrays can receive radiation beams 21 radiated from different radiation directions, so that scanning images of the target 200 at different angles can be obtained. In this way, dual-view images or even multi-view images can be formed, improving detection accuracy.

Referring to Figures 1-3, in an exemplary embodiment, each inspection channel 1 also includes a conveyor device 12 such as a belt conveyor, which is disposed at the lower part of the inspection space 11 and is suitable for moving vertically to The target 200 is transported in the second direction F2 of the first direction F1. The target 200 placed in the inspection channel 1 is conveyed by the conveying device 12 and moved into the inspection space 11 . When the inspection space 11 is provided with an entrance and an exit, the transport device 12 transports the target 200 from the entrance to the exit, and takes out the target at the exit. In an alternative embodiment, when the inspection space 11 is provided with only one opening, the conveying device 12 conveys the target 200 from the opening to approximately the middle part of the inspection space 11 , and after receiving the scanning inspection, moves the target to the Return to the opening and take out 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 in the inspection channel 1 , and the target 200 enters or moves out of the inspection channel 1 through the shielding curtain.

Those skilled in the art will appreciate that the delivery device 12 is not necessary. In an alternative embodiment, no transport device can be provided, so that the target does not move when placed in the inspection channel 1 . Since the scanning device can move horizontally, the target placed in the inspection channel can be scanned and inspected. Furthermore, shielding curtains may not be provided at the entrance and exit of the inspection channel to further simplify the structure of the radiographic inspection equipment.

Referring to Figures 1-3, in an exemplary embodiment, the radiographic inspection equipment 100 further includes an annular rotating frame 5. The rotating frame 5 is rotatably installed on the fixed frame 4. The receiving device 3 is installed on the rotating frame 5 to rotate with the rotating frame 5 . It can be understood that the rotation angular speed of the rotating frame 6 is the same as the rotation angular speed 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 .

In an exemplary embodiment, the radiographic inspection equipment 100 further includes a driving device, the driving device includes: a motor, and a conveyor belt surrounding the motor and the rotating frame 6. The motor drives the rotating frame 6 relative to each other through the conveyor belt. Rotate on the fixed frame 5.

In an exemplary embodiment, a plurality of balls 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 maintain stable rotation of the rotating frame.

FIG. 5 shows a workflow diagram of a radiographic inspection device according to an exemplary embodiment of the present disclosure.

The following takes the radiographic inspection equipment 100 shown in FIGS. 1-3 and 5 as an example to describe the working process of the radiographic inspection equipment according to the embodiment of the present disclosure.

Referring to Figures 1-3 and 5, when using the inspection channel to scan and inspect a passenger's target, first, the passenger approaches the radiographic inspection equipment 100, and the gate at the entrance of the inspection channel 1 is opened; the passenger puts the suitcase or Targets 100 such as packages are put into inspection channel one, and the gates at the entrance and exit of inspection channel 1 are closed; the driving device drives the radiation source and receiving device of the scanning device to move to inspection channel one, and the radiation source emits a radiation beam, which is directed inside the inspection channel. Scan and inspect the target; if the results of the scan and inspection indicate that there are suspicious items in the target, the gate will be kept closed and an alarm will alert the staff; the staff will operate to open the gate and take out the target for further inspection and processing; on the other hand, if the scan The result of the inspection shows that there are no suspicious items in the target and the target is safe. The control gate will be opened to allow passengers to take away their targets and then leave the inspection area.

According to the above operation sequence, check the targets of Passenger 2, Passenger 3 or Passenger 4 in turn.

FIG. 4 shows a simplified schematic diagram of a radiographic inspection device according to another exemplary embodiment of the present disclosure. The radiographic inspection equipment shown in Figure 4 is provided with two inspection channels 1. The reference numerals shown in FIG. 4 and the reference numerals shown in FIG. 1 represent the same components and have the same functions, and will not be described again.

In the above embodiment, description is made by taking an example in which one row of inspection channels includes four independent inspection channels. Those skilled in the art can understand that an appropriate number of inspection channels can be set according to user needs, for example, 3 or 5. Although in the illustrated embodiment, the cross-section of the inspection channel is roughly rectangular, those skilled in the art will understand that the cross-section of the inspection channel may be fan-shaped, and the inspection channel is disposed on the circumference between the fixed frame and the radiation source. superior.

According to the radiographic inspection equipment provided by the above embodiments of the present disclosure, one or more columns of receiving devices (detector arrays) are installed on the fixed frame in a manner extending in the circumferential direction, and the radiation source used to generate the X-ray beam is rotatable. Ground is installed in the center of the fixed frame, and the radiation beam generated by the radiation source can be irradiated to the receiving device, thereby scanning and inspecting the targets in each inspection channel in turn. In the radiation direction of the radiation source, it can be divided into multiple inspection channels of different sizes according to needs. Through the matching of the detector array and the radiation source, the scanning and inspection of the targets in the inspection channel can be completed, and intelligent image identification can be performed. Each inspection channel can be independently imaged and the inspected target can be independently placed, thereby achieving the purpose of multiple people performing security inspections at the same time and greatly improving security inspection efficiency.

The radiographic inspection equipment of the disclosed embodiments can be installed in places such as sports venues, cinemas, shopping malls, concerts and other large gatherings, allowing a large number of concentrated people to pass through security inspections quickly, with low security inspection costs.

Those skilled in the art can understand that the above-described embodiments are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments do not conflict in structure or principle. can be freely combined.

Although the present disclosure has been described in conjunction with the accompanying drawings, the embodiments disclosed in the accompanying drawings are intended to illustrate preferred embodiments of the present disclosure and should not be construed as a limitation of the present disclosure. While some embodiments of the presently disclosed inventive concept have been shown and described, those of ordinary skill in the art will understand that changes may be made in these embodiments without departing from the principles and spirit of the present general inventive concept. The scope is defined by the claims and their equivalents.

Claims (18)

1. A radiographic inspection device (100), including: The fixed frame (5) has a rough annular shape; A plurality of inspection channels (1), arranged in the circumferential direction inside the fixed frame, each inspection channel is suitable for carrying the object to be inspected (200); Scanning devices, including: A radiation source (2) installed in the center of the fixed frame and adapted to generate a radiation beam capable of radiating to each inspection channel; a receiving device (3) mounted on the fixed frame in a manner extending in the circumferential direction and adapted to receive the radiation beam passing through each of the inspection channels; and A controller adapted to control the scanning device to scan and inspect targets in each inspection channel in sequence, Wherein, each inspection channel includes: a first sensor (17), adapted to detect whether the target exists in the inspection channel, and the controller controls the scanning device only when the first sensor detects the presence of the target. The target is scanned and inspected only when there is a target in the inspection channel. 2. The radiographic inspection apparatus according to claim 1, wherein the radiation source is provided rotatably about a rotation axis. 3. The radiographic inspection apparatus according to claim 2, wherein the receiving device is arranged to move on the fixed frame in a circumferential direction relative to a center of a circle of the fixed frame. 4. The radiographic inspection equipment according to claim 3, further comprising a synchronization module (4) adapted to control the receiving device on the fixed frame in the circumferential direction relative to the center of the fixed frame. The angular speed of the upward movement is the same as the angular speed of the circular rotation of the radiation source in the fixed frame, so that the scanning device can move to the vicinity of each inspection channel in sequence. 5. The radiographic inspection apparatus according to claim 2, wherein the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, and the plurality of sub-receiving devices are configured to respectively receive radiation passing through a plurality of inspection channels. radiation beam. 6. The radiographic inspection apparatus of claim 1, wherein the radiation source is adapted to generate a radiation beam radiating in a circumferential direction of 360 degrees. 7. The radiographic inspection apparatus according to claim 6, wherein the receiving device is configured to move in a circumferential direction on the fixed frame relative to a center of a circle of the fixed frame to sequentially receive passages through a plurality of inspections. Channel radiation beam. 8. The radiographic inspection apparatus according to claim 6, wherein the receiving device includes a plurality of sub-receiving devices arranged in the circumferential direction, and the plurality of sub-receiving devices are configured to respectively receive radiation passing through a plurality of inspection channels. radiation beam. 9. The radiographic inspection equipment according to any one of claims 1-8, wherein each inspection channel further includes: At least one gate (14) is provided on at least one of the entrance and exit of the inspection channel, and is provided during the scanning inspection after placing the inspected target into the inspection channel and/or during the inspection. The scanning device closes the entrance and exit when detecting suspicious items in the target. 10. The radiographic inspection device according to claim 9, wherein each of the inspection channels includes: a second sensor (15) adapted to detect that the gate is closed or opened, The controller controls the scanning device to scan and inspect the target in the inspection channel only when the second sensor detects that the at least one gate is closed. 11. The radiographic inspection equipment according to claim 10, wherein the scanning device further comprises a shielding device (22), adapted to detect 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, the radiation beam emitted from the radiation source is prevented from being emitted to the inspection channel. 12. The radiographic inspection apparatus according to claim 10, wherein 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 When the gate is opened, the controller turns off the radiation source of the scanning device moved near the inspection channel. 13. The radiographic inspection apparatus according to claim 11 or 12, wherein 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 When the gate is opened, the controller controls the scanning device to pass through the inspection channel at a faster speed. 14. Radiographic inspection apparatus according to any one of claims 1-13, wherein the radiation source is adapted to emit multiple angled radiation beams (21) to the same inspection channel; and The receiving device includes a plurality of sets of detector arrays, the receiving surfaces of the plurality of sets of detector arrays being arranged at an angle to each other to respectively receive a plurality of angled radiation beams. 15. The radiographic inspection equipment according to any one of claims 1 to 14, wherein each of the inspection channels further includes a conveying device (12), which is arranged at the lower part of the inspection channel and is suitable for vertical The target is transported in a horizontal direction of the circumferential direction. 16. The radiographic inspection equipment according to any one of claims 1 to 15, further comprising an annular rotating frame (6), the rotating frame is rotatably installed on the fixed frame, and the receiving device is installed on on the rotating frame to rotate with the rotating frame. 17. The radiographic inspection equipment according to claim 16, further comprising a driving device, the driving device comprising: motor, and Conveyor belt, the motor drives the rotating frame to rotate relative to the fixed frame through the conveyor belt. 18. The radiographic inspection apparatus according to claim 16 or 17, wherein a plurality of balls (61) are provided between the fixed frame and the rotating frame.